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ID Dateup Author Type Category Subject
  152   Sat Oct 29 10:18:41 2016 GabrieleGeneralMeasurementsS1600447 before and after annealing

The plot above compares the measured Q for #447 (second batch, flat machined during production), before and after annealing. The annealing improves significantly all Q's.

 

  153   Sun Oct 30 17:05:47 2016 GabrieleGeneralMeasurementsS1600448 before and after annealing

The plot above compares the measured Q for #448 (second batch, flat machined during production), before and after annealing. The annealing improves significantly all Q's.

  154   Mon Oct 31 12:51:13 2016 GabrieleGeneralMeasurementsSimulation of dilution factor and measured loss angles

I made a COMSOL simulation of our wafer (75 mm with flats, 1 mm thick) with a 1 micron thick coating (Tantala), and computed the dilution factor (E_coating / E_total). The result is shown in the plot below:

The dilution factor is slighly mode dependent, around a value of 5.7e-3.

The Q we measured on the latest two annealed wafers are in the range of 5e6 - 10e6 for the good modes, meaning that the total loss angle (subtrate, surface and edge combined) is 1e-7 - 2e-7.

Assuming an undoped tantala coating with loss angle of 4e-4 (http://authors.library.caltech.edu/55765/2/1501.06371.pdf), the disk loss angle after coating will be 2.2e-6, a factor 5 to 10 higher than our uncoated and annealed wafers.

So we can use the wafers as they are for our measurements.

 

  155   Tue Nov 1 15:34:49 2016 Alena, CalumGeneral Annealing run

Annealing run (449-453) on 3" wafers - Crime 11/01/2016 https://dcc.ligo.org/T1600507

  156   Fri Nov 4 08:11:57 2016 GabrieleGeneralMeasurementsS1600450

2016-11-04

  • 8:08am in chamber
  • 8:38am pumping down
  • 11:50am QUIET 1162320651 (11:50:34) + 30s, EXCITATION at 1162320710 this excitation didn't wotk very well
  • 12:40pm EXCITATION at 1162323596, again it doesn't look good
  • 2:00pm: measured Q are very low, it's very hard to excite the first mode. Stopping pumps
  • 2:41pm, venting
  • 2:45pm, removing sample

Results

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
2527.2        2.4665e+06        2.4648e+06        2.4683e+06
4401.5        1.6292e+06        1.6026e+06        1.6567e+06
4467.5        2.0848e+05        2.0822e+05        2.0874e+05
6713.6        4.6050e+05        4.6008e+05        4.6092e+05
6724.0        2.0244e+06        2.0163e+06        2.0326e+06
14079.4       3.7887e+06        3.7784e+06        3.7992e+06
15977.6       2.5322e+06        2.5321e+06        2.5322e+06
16204.9       7.6919e+05        7.6917e+05        7.6922e+05
24542.5       6.0480e+05        6.0479e+05        6.0482e+05
26955.4       1.7958e+06        1.7958e+06        1.7958e+06
28775.0       9.3100e+05        9.3098e+05        9.3102e+05

 

 

 

Attachment 3: ringdowns.png
ringdowns.png
  157   Fri Nov 4 08:13:25 2016 GabrieleElectronicsGeneralPower outage?

This morning I found the cymac and the workstation rebooted, so I suspected a power cut in the last days. However, the function generator and the power supply for the QPD were off. So somebody must have turned them off.

Please write those actions in the elog!

  158   Fri Nov 4 11:31:11 2016 GabrieleElectronicsConfigurationAutocenter control and model modifications

Removed the peak meter lock from the model, since it's not used

Added and EPICS binary bit to control the autocenter, added corresponding buttons to the MEDM screen.

Now the GUI stops the autocentering when acquiring the reference spectrum.

The auto_excite.py also stops the autocentering 35 seconds before the excitation and until 35 second after the excitation, to provide for two reference quiet periods.

  159   Fri Nov 4 14:56:35 2016 GabrieleGeneralMeasurementsS1600451

2016-11-04

  • 2:45pm: re-aligned optical setup to horizontal reference
  • 2:55pm: installed in chamber, balanced
  • 2:56pm, starting roughing pump
  • 3:06pm, starting turbo pump
  • 4:37pm, excitation at GPS 1162337817: apparently I excited too much and the QPD signals are saturating!

  • 7:58pm: new excitation, amplitude 1kV, duration ~20s. Stopped at ~1162349974. This excitation looks good
  • 9:07pm:Started auto_excite.py script. It will wait 5 hours, then perfom two excitation with above parameters, separated by 3 hours
    • excitations at 1162372099 and 1162382978

2016-11-05

  • pumps stopped at 10:00am

Results

2016-11-04

 

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1097.0        1.1219e+07        1.1201e+07        1.1236e+07
2515.7        6.3988e+06        6.2433e+06        6.5622e+06
4379.6        9.6150e+06        9.6117e+06        9.6182e+06
4440.9        3.8684e+06        3.8668e+06        3.8701e+06
6678.8        2.7195e+05        2.7170e+05        2.7220e+05
6696.5        2.9698e+06        2.9684e+06        2.9712e+06
6750.6        1.3442e+07        1.3387e+07        1.3497e+07
6811.9        1.9344e+06        1.9288e+06        1.9402e+06
9403.6        1.4946e+05        1.4945e+05        1.4946e+05
10095.6        2.4035e+06        2.4001e+06        2.4069e+06
10237.1        6.5129e+05        6.4697e+05        6.5567e+05
12545.2        1.1434e+06        1.1392e+06        1.1476e+06
12662.5        1.7179e+06        1.7114e+06        1.7245e+06
15901.4        1.5770e+05        1.5769e+05        1.5770e+05
15914.3        2.6775e+06        2.6703e+06        2.6846e+06
16104.5        1.1722e+07        1.1685e+07        1.1760e+07
18110.0        2.1021e+06        2.0988e+06        2.1054e+06
18430.2        9.4278e+05        9.4276e+05        9.4281e+05
18594.0        4.3087e+06        4.3033e+06        4.3142e+06
21119.0        2.6590e+05        2.6589e+05        2.6590e+05
23305.8        2.9146e+06        2.9069e+06        2.9224e+06
24386.0        5.3982e+06        5.3779e+06        5.4187e+06
24654.5        1.2901e+06        1.2900e+06        1.2901e+06
24705.0        1.0320e+06        1.0319e+06        1.0320e+06
25798.0        2.0084e+06        2.0083e+06        2.0084e+06
26123.0        4.1997e+06        4.1996e+06        4.1998e+06
26831.0        5.9972e+05        5.9971e+05        5.9973e+05
28145.0        6.7827e+06        6.7546e+06        6.8110e+06
28555.7        3.7397e+06        3.7397e+06        3.7398e+06
28642.1        3.2190e+06        3.2189e+06        3.2190e+06
29175.0        2.3940e+06        2.3939e+06        2.3940e+06
29190.7        9.6877e+05        9.6876e+05        9.6879e+05
29885.0        1.1788e+06        1.1788e+06        1.1788e+06
30847.0        9.0157e+06        9.0155e+06        9.0158e+06
32238.4        2.3676e+06        2.3676e+06        2.3677e+06
32489.6        1.8718e+06        1.8718e+06        1.8719e+06

2016-11-05 A

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1097.5        1.0150e+07        1.0127e+07        1.0174e+07
2515.7        5.5427e+06        5.5405e+06        5.5448e+06
4341.0        3.9407e+06        3.9204e+06        3.9613e+06
4379.5        3.7580e+06        3.7570e+06        3.7589e+06
4418.3        4.0055e+06        3.9839e+06        4.0272e+06
4479.5        1.8248e+05        1.8246e+05        1.8250e+05
6640.4        3.1482e+06        3.1137e+06        3.1834e+06
6678.8        2.9326e+06        2.9319e+06        2.9334e+06
6696.5        1.2999e+07        1.2995e+07        1.3004e+07
6712.1        1.8502e+06        1.8416e+06        1.8589e+06
6750.6        1.8423e+06        1.8418e+06        1.8428e+06
6789.1        1.8641e+06        1.8557e+06        1.8726e+06
6812.0        1.2882e+05        1.2875e+05        1.2888e+05
9403.7        2.2149e+06        2.2119e+06        2.2178e+06
10095.7        6.7624e+05        6.7532e+05        6.7716e+05
10237.1        8.8267e+05        8.8113e+05        8.8423e+05
12545.3        1.7193e+06        1.7154e+06        1.7231e+06
12662.9        1.3162e+05        1.3162e+05        1.3163e+05
14015.5        7.8470e+06        7.6850e+06        8.0159e+06
14749.0        8.7237e+05        8.7234e+05        8.7240e+05
15901.5        2.6799e+06        2.6757e+06        2.6840e+06
16104.6        1.8324e+06        1.8309e+06        1.8340e+06
18109.3        9.6584e+05        9.6582e+05        9.6587e+05
18430.3        4.5212e+06        4.5195e+06        4.5229e+06
18659.2        2.5315e+06        2.5315e+06        2.5316e+06
19997.4        6.2817e+05        6.2816e+05        6.2819e+05
20036.5        1.3129e+06        1.3129e+06        1.3130e+06
20278.0        6.2428e+05        6.2426e+05        6.2429e+05
21119.1        3.4785e+06        3.4784e+06        3.4786e+06
22490.4        4.4881e+06        4.4880e+06        4.4882e+06
23305.9        5.3494e+06        5.3429e+06        5.3559e+06
24386.2        1.3629e+06        1.3628e+06        1.3629e+06
24654.4        9.2395e+05        9.2393e+05        9.2397e+05
24704.5        1.9166e+06        1.9132e+06        1.9201e+06
26123.2        6.4702e+05        6.4700e+05        6.4703e+05
26831.0        5.9846e+06        5.9684e+06        6.0009e+06
28555.8        2.9833e+06        2.9832e+06        2.9833e+06
28642.1        2.1156e+06        2.1156e+06        2.1157e+06
28742.9        1.0233e+07        1.0233e+07        1.0233e+07
29175.0        9.1788e+05        9.1786e+05        9.1789e+05
29191.0        1.1637e+06        1.1637e+06        1.1637e+06
29885.1        8.3480e+06        8.3478e+06        8.3481e+06
30846.5        2.2345e+06        2.2345e+06        2.2345e+06
31607.5        3.6183e+05        3.6183e+05        3.6184e+05
32489.4        5.7409e+06        5.7408e+06        5.7410e+06

2016-11-05 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1098.0        8.1698e+06        8.1032e+06        8.2374e+06
2477.0        5.0803e+06        4.9987e+06        5.1646e+06
2515.6        5.5435e+06        5.5413e+06        5.5458e+06
4341.1        3.6399e+06        3.6069e+06        3.6736e+06
4379.6        3.7430e+06        3.7422e+06        3.7439e+06
4418.0        3.6883e+06        3.6647e+06        3.7122e+06
4440.9        1.8011e+05        1.8009e+05        1.8013e+05
6678.7        2.9283e+06        2.9246e+06        2.9320e+06
6696.5        1.2927e+07        1.2908e+07        1.2946e+07
6750.6        1.8937e+06        1.8911e+06        1.8963e+06
6812.1        1.3790e+05        1.3789e+05        1.3791e+05
9365.0        2.2626e+06        2.2625e+06        2.2627e+06
9403.7        2.2105e+06        2.2094e+06        2.2117e+06
10095.5        6.4293e+05        6.4290e+05        6.4296e+05
10237.2        9.2890e+05        9.2885e+05        9.2894e+05
12545.3        1.7237e+06        1.7080e+06        1.7398e+06
15901.4        2.6697e+06        2.6697e+06        2.6698e+06
15914.5        1.1338e+07        1.1245e+07        1.1432e+07
16104.5        1.7841e+06        1.7840e+06        1.7841e+06
18109.5        9.4816e+05        9.4814e+05        9.4819e+05
18430.3        4.6575e+06        4.6555e+06        4.6594e+06
21119.1        3.7468e+06        3.7338e+06        3.7599e+06
23305.9        5.3687e+06        5.3582e+06        5.3792e+06
24386.1        1.3616e+06        1.3616e+06        1.3616e+06
24654.5        9.7495e+05        9.7493e+05        9.7497e+05
24704.4        1.9229e+06        1.9229e+06        1.9230e+06
26831.1        5.8344e+06        5.8342e+06        5.8345e+06
28556.0        3.0677e+06        3.0676e+06        3.0677e+06
29175.2        8.7856e+05        8.7855e+05        8.7858e+05
29190.8        1.1455e+06        1.1454e+06        1.1455e+06
29885.1        8.9158e+06        8.9157e+06        8.9160e+06
30846.6        2.1943e+06        2.1943e+06        2.1944e+06
32489.5        5.2642e+06        5.2641e+06        5.2642e+06

 

  160   Fri Nov 4 16:16:23 2016 AlenaGeneralGeneralAnnealing run

Annealing run (454-459) on 3" wafers - Crime 11/02/2016 https://dcc.ligo.org/LIGO-T1600510

Annealing run (460-465) on 3" wafers - Crime 11/04/2016 https://dcc.ligo.org/T1600513-x0

  161   Sat Nov 5 10:49:17 2016 GabrieleGeneralMeasurementsS1600452

2015-11-05

  • 10:45am in chamber and balanced
  • 10:48am roughing pump on
  • 10:56am turbo pump on
  • 1:00pm: excitation. Quiet before 1162411289, excite (2 kV, 10s), quiet after 1162411438
  • 4:07pm: excitation. Quiet before 1162422382, excite (2kV, 20s), quiet after 1162422445
  • 5:08pm: pumps off

Results

The first mode at 1 kHz couldn't be measured. Not clear why.

2016-11-05 A
 

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
2488.7        6.2525e+06        6.2046e+06        6.3012e+06
2527.3        7.2443e+06        7.2391e+06        7.2496e+06
2567.0        9.8492e+04        9.8472e+04        9.8511e+04
4363.0        3.4808e+06        3.4060e+06        3.5590e+06
4401.4        5.8009e+06        5.7966e+06        5.8052e+06
4427.7        1.6106e+05        1.6104e+05        1.6108e+05
4466.5        1.7637e+05        1.7623e+05        1.7651e+05
4505.0        1.6860e+05        1.6858e+05        1.6862e+05
6713.4        4.4123e+06        4.4106e+06        4.4139e+06
6725.3        1.7867e+07        1.7854e+07        1.7880e+07
6750.5        1.9213e+06        1.9079e+06        1.9348e+06
6789.1        2.3629e+06        2.3617e+06        2.3642e+06
6827.7        1.9619e+06        1.9487e+06        1.9754e+06
9454.4        3.0169e+06        3.0136e+06        3.0203e+06
10138.7        8.3140e+06        8.3026e+06        8.3255e+06
10290.4        8.9211e+05        8.9206e+05        8.9215e+05
12615.5        6.3311e+05        6.3308e+05        6.3313e+05
12738.9        2.4194e+05        2.4193e+05        2.4195e+05
14078.0        8.8470e+06        8.8231e+06        8.8710e+06
15974.6        1.5678e+06        1.5649e+06        1.5707e+06
16198.2        6.8727e+05        6.8725e+05        6.8729e+05
18512.9        4.6128e+06        4.5972e+06        4.6286e+06
20103.2        5.6830e+05        5.6829e+05        5.6831e+05
20153.5        1.0308e+06        1.0308e+06        1.0309e+06
21211.0        2.7134e+06        2.7133e+06        2.7135e+06
23409.3        7.0470e+06        7.0469e+06        7.0472e+06
24533.4        1.5102e+06        1.5101e+06        1.5102e+06
25926.0        9.7012e+05        9.7010e+05        9.7014e+05
26951.6        9.2671e+06        9.2669e+06        9.2673e+06
28680.1        5.3425e+06        5.3424e+06        5.3426e+06
28777.7        3.7576e+06        3.7575e+06        3.7576e+06
29370.5        6.4020e+05        6.4019e+05        6.4021e+05
31459.5        1.3127e+06        1.3127e+06        1.3128e+06

2016-11-05 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
2525.0        7.0757e+06        7.0674e+06        7.0841e+06
2526.3        7.0794e+06        7.0710e+06        7.0879e+06
4401.5        5.5472e+06        5.4910e+06        5.6046e+06
4465.8        1.9017e+05        1.9015e+05        1.9019e+05
6713.5        4.1401e+06        4.1258e+06        4.1545e+06
6789.1        2.3060e+06        2.3003e+06        2.3117e+06
9454.4        3.1170e+06        3.0629e+06        3.1730e+06
10290.5        9.9500e+05        9.9495e+05        9.9505e+05
14077.6        8.3035e+06        8.2846e+06        8.3225e+06
15975.0        1.7004e+06        1.7004e+06        1.7005e+06
16198.4        9.3526e+05        9.3523e+05        9.3529e+05
23409.0        6.9232e+06        6.8897e+06        6.9570e+06
26951.5        8.9906e+06        8.9904e+06        8.9907e+06
28680.0        5.1012e+06        5.1011e+06        5.1012e+06
Attachment 3: ringdowns.png
ringdowns.png
Attachment 4: Qs_errorbars.png
Qs_errorbars.png
  162   Sat Nov 5 17:40:35 2016 GabrieleGeneralMeasurementsS1600453

2015-11-05

  • 5:39pm in chamber, balanced
  • 5:40pm roughing pump on
  • 5:50pm turbo on
  • 7:55pm: excitation. Quiet before 1162436202, excitation ampl. 2kV, quiet after 1162436358
  • Three more excitation set up (2kV, 20s) at 11pm, 2am and 6am
    • Quiet time before excitation: 1162447332
      Excitation at 1162447375 (20 s)
      Excitation finished
      Quiet time after excitation: 1162447395

    • Quiet time before excitation: 1162461825
      Excitation at 1162461868 (20 s)
      Excitation finished
      Quiet time after excitation: 1162461888

    • Quiet time before excitation: 1162476319
      Excitation at 1162476362 (20 s)
      Excitation finished
      Quiet time after excitation: 1162476382

  • Those didn't work because I forgot to set the ESD gain to 1!!!!

2015-11-06

  • 9:34am: pumps off
  • 10:08 removed from chamber

Results

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1098.1        1.5137e+07        1.5118e+07        1.5156e+07
2481.0        8.4768e+06        8.3498e+06        8.6077e+06
2519.4        7.9043e+06        7.9003e+06        7.9082e+06
2559.9        1.8115e+06        1.8024e+06        1.8206e+06
4388.9        4.7996e+06        4.7985e+06        4.8006e+06
4455.9        2.1908e+05        2.1905e+05        2.1910e+05
6696.4        4.0144e+06        4.0126e+06        4.0163e+06
6710.7        1.5767e+07        1.5747e+07        1.5787e+07
6772.8        2.6200e+06        2.6164e+06        2.6237e+06
9432.4        3.1762e+06        3.1742e+06        3.1782e+06
10116.4        4.2917e+06        4.2915e+06        4.2920e+06
10271.0        2.6169e+05        2.6168e+05        2.6170e+05
12587.8        2.4988e+06        2.4972e+06        2.5005e+06
14047.1        3.0949e+06        3.0846e+06        3.1052e+06
15936.5        3.3676e+06        3.3470e+06        3.3884e+06
15946.1        1.0214e+07        1.0164e+07        1.0264e+07
16166.6        2.3195e+06        2.3112e+06        2.3279e+06
18475.0        3.6992e+06        3.6991e+06        3.6993e+06
18525.5        2.4106e+06        2.4106e+06        2.4107e+06
20112.0        1.0591e+06        1.0591e+06        1.0591e+06
23361.8        6.6258e+06        6.6139e+06        6.6378e+06
24486.5        1.9252e+06        1.9252e+06        1.9253e+06
26010.0        1.0992e+06        1.0991e+06        1.0992e+06
26897.0        9.2142e+06        9.1310e+06        9.2990e+06
28618.0        3.6201e+06        3.6200e+06        3.6201e+06
28714.7        3.0597e+06        3.0597e+06        3.0598e+06
28804.0        1.2547e+07        1.2485e+07        1.2610e+07
29322.4        1.7786e+06        1.7786e+06        1.7786e+06
31536.4        1.9114e+06        1.9113e+06        1.9114e+06
  163   Sun Nov 6 10:14:51 2016 GabrieleGeneralMeasurementsS1600456

2016-11-06

  • 10:12am: installed in chamber, balanced
  • 10:14am: roughing pump on
  • 10:22am: turbo pump on
  • 12:40pm: excitation:
    • quiet before excitation 1162501864+30
    • quiet after excitation 1162501946+30
  • 4pm excitation
    • Quiet time before excitation: 1162512830
      Excitation at 1162512873 (20 s)
      Excitation finished
      Quiet time after excitation: 1162512893

  • 6:05pm: In both ringdowns the first mode at 1 kHz wasn't properly excited. I moved the laser beam on a different spot. Using brodband noise I still couldn't get it to ring up. So I injected bandlimited noise 1000-1200 Hz with amplitude of 10000. Mode are up.
    Quiet time after injection from 1162519598

  • 8:07pm, again band-limited excitation, quiet time after 1162526818

2016-11-07

  • 8:39am: pumps off

Results

2016-11-05 A

 

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
2509.1        4.0579e+06        4.0553e+06        4.0606e+06
2549.8        8.5490e+05        8.4709e+05        8.6286e+05
4370.0        1.6497e+06        1.6492e+06        1.6501e+06
4437.0        2.2329e+05        2.2310e+05        2.2347e+05
6666.4        2.6788e+06        2.6756e+06        2.6819e+06
6680.0        7.6174e+06        7.6026e+06        7.6322e+06
6743.0        1.8669e+06        1.8664e+06        1.8673e+06
6807.3        2.9358e+05        2.9335e+05        2.9382e+05
9389.2        2.3737e+06        2.3726e+06        2.3748e+06
10070.3        8.5206e+05        8.5202e+05        8.5211e+05
10225.0        6.2779e+05        6.2776e+05        6.2782e+05
12529.9        1.3218e+06        1.3217e+06        1.3218e+06
13983.0        1.5269e+06        1.5269e+06        1.5270e+06
15863.5        1.8321e+06        1.8320e+06        1.8321e+06
15875.4        5.0350e+06        5.0348e+06        5.0351e+06
16091.5        1.0913e+06        1.0912e+06        1.0913e+06
18389.0        5.3468e+06        5.3357e+06        5.3580e+06
21074.0        3.7649e+06        3.7648e+06        3.7650e+06
23252.3        3.0067e+06        2.9999e+06        3.0135e+06
24371.4        1.2491e+06        1.2490e+06        1.2491e+06
26778.6        2.5593e+06        2.5592e+06        2.5593e+06
28482.4        2.6427e+06        2.6426e+06        2.6427e+06
28579.0        1.8244e+06        1.8244e+06        1.8245e+06
28678.4        6.4318e+06        6.4317e+06        6.4319e+06
31701.4        1.3385e+06        1.3384e+06        1.3385e+06

2019-11-06 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
2509.0        4.3643e+06        4.3445e+06        4.3843e+06
4370.1        2.0745e+06        2.0560e+06        2.0935e+06
4437.0        3.5763e+05        3.4927e+05        3.6641e+05
6666.5        2.8583e+06        2.8327e+06        2.8845e+06
6680.0        9.7911e+06        9.7594e+06        9.8230e+06
6743.0        1.9479e+06        1.9265e+06        1.9698e+06
6807.3        5.0716e+05        4.9331e+05        5.2179e+05
9389.2        2.6386e+06        2.6104e+06        2.6675e+06
10070.3        1.0634e+06        1.0633e+06        1.0634e+06
10225.1        1.0434e+06        1.0433e+06        1.0434e+06
12529.9        1.6029e+06        1.5749e+06        1.6318e+06
13983.3        2.7379e+06        2.7016e+06        2.7751e+06
15863.7        2.2082e+06        2.2082e+06        2.2083e+06
15875.4        3.2435e+06        3.2434e+06        3.2436e+06
23252.2        3.6506e+06        3.6505e+06        3.6507e+06
24371.5        2.0111e+06        2.0110e+06        2.0111e+06
26779.0        2.1974e+05        2.1973e+05        2.1974e+05
28579.1        2.7341e+06        2.7341e+06        2.7342e+06
28679.0        6.2394e+06        6.2393e+06        6.2395e+06
31701.0        2.2893e+06        2.2893e+06        2.2893e+06

2016-11-06 First mode

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1094.0        1.0221e+07        1.0194e+07        1.0249e+07
1115.0        1.5958e+06        1.5885e+06        1.6031e+06

 

Attachment 9: ringdowns_1st.png
ringdowns_1st.png
Attachment 10: Qs_errorbars_1st.png
Qs_errorbars_1st.png
  164   Mon Nov 7 10:39:08 2016 GabrieleGeneralMeasurementsS1600457

2016-11-07

  • 10:30am, re-aligned optical system to horizontal reference
  • 10:37am, in chamber balanced
  • 10:38am, started roughing pump
  • 10:52am, started turbo pump, pressure was <2 Torr
    • disk got briefly excited when the pump was at ~60 Hz, and again at ~200 Hz,
    • centered QPD with picomotors at 10:54am,49
    • pump at 500 Hz at 10:55am, no more disk excitations.
    • IGM on at 10:55am, disk moved briefly afterwards, not sure if correlated since the IGM controlled is still showing "STARTING".
    • Disk definitely moved at 10:57:40, when the IGM controller started showing pressure.
      IGM switched off at 10:58:45am, disk is not going back!
    • QPD recentered using picomotors.
    • IGM on again at 11:00am, no disk displacement this time.
  • 12:20pm:
    • quiet time before excitation 1162585209
    • excitation
    • quiet time after excitation 1162585348
  • 1:49pm: excitation again, 2kV, quiet time after 1162585348
  • In both the previous excitations the QPD got misaligned at the beginning, resulting in not very good ring-downs
  • Another trial at 1162597014, amplitud 1.5kV. Somebody switched on the light in the lab...
  • pumps stopped at 4:09pm

Results

2016-11-07 A

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1109.0        6.0358e+06        6.0221e+06        6.0496e+06
2543.3        2.8271e+06        2.8234e+06        2.8309e+06
2581.0        9.1904e+05        9.1711e+05        9.2097e+05
2619.5        7.6167e+05        7.4294e+05        7.8136e+05
3413.6        1.1513e+06        1.1511e+06        1.1514e+06
4390.0        2.5891e+06        2.5308e+06        2.6501e+06
4428.7        2.4948e+06        2.4938e+06        2.4958e+06
4467.4        2.6014e+06        2.5551e+06        2.6494e+06
6754.1        1.9049e+06        1.8972e+06        1.9126e+06
6770.9        6.5053e+06        6.4828e+06        6.5279e+06
6825.1        9.5015e+05        9.4829e+05        9.5201e+05
10206.7        7.1637e+06        7.1482e+06        7.1792e+06
12689.2        1.3788e+06        1.3788e+06        1.3789e+06
14169.7        5.2321e+06        5.1965e+06        5.2682e+06
16078.8        1.3844e+06        1.3844e+06        1.3844e+06
16089.5        7.6177e+06        7.5997e+06        7.6358e+06
16289.4        1.1658e+06        1.1658e+06        1.1658e+06
18631.4        2.4582e+06        2.4581e+06        2.4582e+06
20268.5        9.5666e+05        9.5663e+05        9.5668e+05
21348.3        1.2590e+07        1.2590e+07        1.2590e+07
23561.2        2.9089e+06        2.9088e+06        2.9090e+06
27121.0        5.1018e+06        5.1017e+06        5.1019e+06

2016-11-07 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1109.0        6.0358e+06        6.0221e+06        6.0496e+06
2543.3        2.8271e+06        2.8234e+06        2.8309e+06
2581.0        9.1904e+05        9.1711e+05        9.2097e+05
2619.5        7.6167e+05        7.4294e+05        7.8136e+05
3413.6        1.1513e+06        1.1511e+06        1.1514e+06
4390.0        2.5891e+06        2.5308e+06        2.6501e+06
4428.7        2.4948e+06        2.4938e+06        2.4958e+06
4467.4        2.6014e+06        2.5551e+06        2.6494e+06
6754.1        1.9049e+06        1.8972e+06        1.9126e+06
6770.9        6.5053e+06        6.4828e+06        6.5279e+06
6825.1        9.5015e+05        9.4829e+05        9.5201e+05
10206.7        7.1637e+06        7.1482e+06        7.1792e+06
12689.2        1.3788e+06        1.3788e+06        1.3789e+06
14169.7        5.2321e+06        5.1965e+06        5.2682e+06
16078.8        1.3844e+06        1.3844e+06        1.3844e+06
16089.5        7.6177e+06        7.5997e+06        7.6358e+06
16289.4        1.1658e+06        1.1658e+06        1.1658e+06
18631.4        2.4582e+06        2.4581e+06        2.4582e+06
20268.5        9.5666e+05        9.5663e+05        9.5668e+05
21348.3        1.2590e+07        1.2590e+07        1.2590e+07
23561.2        2.9089e+06        2.9088e+06        2.9090e+06
27121.0        5.1018e+06        5.1017e+06        5.1019e+06
  165   Mon Nov 7 11:27:16 2016 GabrieleGeneralVacuumTurbo pump excites some resonance at 58 Hz

I looked into a couple of turbo pump switch on periods, and in both cases when the pump speed hits 58 Hz, a resonance is excited. I'm not sure what's resonating.

Today I let the roughing pump reduce the pressure to a level lower than usual, and this seems to mitigate the effect. The disk wasn't shaking as much as it did in previous pump-downs.

  166   Mon Nov 7 16:59:10 2016 GabrieleGeneralMeasurementsS1600458

2016-11-07

  • 4:46pm installed and balanced
  • 4:47pm, roughing pump started
  • 4:59pm turbo pump started
  • 8:23pm: excitation, quiet time before 1162613072, excitation 1 kV, quiet time after 1162614126
  • Three more excitations (1.5 kV, 20 seconds) planned for the night
    • Quiet time before excitation: 1162624994
      Excitation at 1162625037 (20 s)
      Quiet time after excitation: 1162625057

    • Quiet time before excitation: 1162635887
      Excitation at 1162635930 (20 s)
      Quiet time after excitation: 1162635950

    • Quiet time before excitation: 1162646780
      Excitation at 1162646823 (20 s)
      Quiet time after excitation: 1162646843

  • Not clear why, but the overnight excitation didn't go through.
    Trying again amplitude 3kV, quiet time before 1162657046, quiet time after 1162657246

2016-11-08

  • pumps stopped at 10:15am

Results

2016-11-07

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
2551.8        3.7876e+06        3.7330e+06        3.8438e+06
4443.7        3.5381e+06        3.5361e+06        3.5400e+06
4511.3        2.3349e+05        2.3326e+05        2.3373e+05
6778.3        2.7169e+06        2.7161e+06        2.7178e+06
6790.6        8.5771e+06        8.4590e+06        8.6985e+06
6856.4        1.5505e+06        1.5497e+06        1.5513e+06
6918.0        5.2488e+04        5.2484e+04        5.2492e+04
9546.1        2.5680e+06        2.5632e+06        2.5729e+06
10236.2        1.5916e+06        1.5915e+06        1.5917e+06
10392.6        1.9989e+06        1.9988e+06        1.9990e+06
11331.0        1.2034e+06        1.2033e+06        1.2035e+06
12738.7        1.3389e+06        1.3365e+06        1.3414e+06
12865.9        5.5771e+05        5.5768e+05        5.5773e+05
14212.1        4.5965e+06        4.5963e+06        4.5966e+06
16123.7        2.8340e+06        2.8253e+06        2.8427e+06
16136.4        8.1131e+06        8.0328e+06        8.1950e+06
16357.3        2.3864e+06        2.3820e+06        2.3908e+06
18688.6        3.6459e+06        3.6459e+06        3.6460e+06
18865.2        2.2149e+06        2.2149e+06        2.2150e+06
20348.7        1.5629e+06        1.5628e+06        1.5629e+06
21415.2        1.7095e+06        1.7095e+06        1.7095e+06
21904.5        3.6954e+06        3.6953e+06        3.6955e+06
23630.5        1.3725e+06        1.3724e+06        1.3725e+06
23787.0        3.3216e+05        3.3215e+05        3.3216e+05
24771.6        1.1522e+06        1.1522e+06        1.1523e+06
25236.5        1.9997e+06        1.9996e+06        1.9997e+06
25543.0        5.9194e+05        5.9193e+05        5.9195e+05
25562.4        8.3780e+05        8.3778e+05        8.3782e+05
27208.6        2.2973e+06        2.2972e+06        2.2973e+06
28226.8        6.0508e+06        6.0507e+06        6.0509e+06
28228.5        5.1058e+06        5.1057e+06        5.1058e+06
28233.5        2.8462e+06        2.8461e+06        2.8462e+06
28946.1        3.0162e+06        3.0161e+06        3.0162e+06
29045.1        1.5018e+06        1.5018e+06        1.5018e+06
29139.3        4.5280e+06        4.5280e+06        4.5281e+06
29398.6        6.9469e+06        6.9468e+06        6.9470e+06
29622.5        1.2690e+06        1.2690e+06        1.2690e+06
30303.0        1.8432e+06        1.8431e+06        1.8432e+06
31149.4        1.0890e+06        1.0890e+06        1.0891e+06
32024.0        2.0661e+06        2.0660e+06        2.0661e+06

2016-11-08

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1112.6        6.0778e+06        6.0522e+06        6.1037e+06
2551.8        4.2832e+06        4.2750e+06        4.2915e+06
4405.0        3.7124e+06        3.6470e+06        3.7801e+06
4443.7        3.4543e+06        3.4532e+06        3.4554e+06
4511.3        2.3471e+05        2.3442e+05        2.3500e+05
6778.3        2.7676e+06        2.7667e+06        2.7685e+06
6790.5        9.3077e+06        9.2532e+06        9.3628e+06
6818.0        1.5965e+06        1.5964e+06        1.5966e+06
6856.4        1.5612e+06        1.5607e+06        1.5617e+06
6895.0        1.5618e+06        1.5617e+06        1.5619e+06
6918.3        5.5271e+04        5.5267e+04        5.5275e+04
9546.1        2.4813e+06        2.4792e+06        2.4834e+06
10236.1        1.4156e+06        1.4156e+06        1.4157e+06
10392.6        1.9300e+06        1.9232e+06        1.9369e+06
11331.6        1.4138e+06        1.4137e+06        1.4138e+06
12738.7        1.5267e+06        1.5254e+06        1.5281e+06
12865.8        6.3722e+05        6.3719e+05        6.3724e+05
14211.9        4.4968e+06        4.4967e+06        4.4970e+06
16123.6        2.6170e+06        2.6169e+06        2.6171e+06
16136.4        7.7399e+06        7.6976e+06        7.7827e+06
16357.2        1.9119e+06        1.9077e+06        1.9161e+06
18688.5        3.1745e+06        3.1745e+06        3.1746e+06
18865.0        2.0300e+06        2.0299e+06        2.0300e+06
20348.7        1.4390e+06        1.4390e+06        1.4391e+06
21415.1        1.6406e+06        1.6405e+06        1.6406e+06
23630.5        1.5226e+06        1.5225e+06        1.5226e+06
25237.0        2.5215e+06        2.5214e+06        2.5215e+06
25543.0        8.4456e+05        8.4455e+05        8.4458e+05
27208.5        2.8485e+06        2.8484e+06        2.8485e+06
28946.0        2.7426e+06        2.7426e+06        2.7427e+06
29622.3        1.2209e+06        1.2209e+06        1.2209e+06

 

 

  167   Tue Nov 8 11:39:20 2016 GabrieleGeneralMeasurementsS1600459

2016-11-08

  • 11:23, in chamber, balanced
  • 11:25 roughing pump on
  • 11:38 turbo pump on
  • 1:38pm excitation (3kV, ~20s). Quiet time before: 1162677138, quiet time after 1162677462
  • 3:27pm excitation. (3kV, 30s). Quiet time after 1162682879
  • 4:37pm, pumps stopped

Results

2016-11-08 A

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1108.3        1.5638e+07        1.5570e+07        1.5708e+07
2503.6        7.2192e+06        6.8796e+06        7.5940e+06
2542.2        7.3800e+06        7.3760e+06        7.3839e+06
4389.0        5.3514e+06        5.3121e+06        5.3913e+06
4427.6        5.3885e+06        5.3869e+06        5.3901e+06
4466.2        5.4399e+06        5.4000e+06        5.4803e+06
4495.0        2.1932e+05        2.1899e+05        2.1966e+05
6754.2        3.8355e+06        3.8326e+06        3.8383e+06
6767.2        1.3227e+07        1.3213e+07        1.3240e+07
6793.5        2.1749e+06        2.1747e+06        2.1751e+06
6832.1        2.1373e+06        2.1366e+06        2.1380e+06
6870.6        2.2276e+06        2.2274e+06        2.2278e+06
9512.8        2.9775e+06        2.9723e+06        2.9828e+06
10200.3        2.5862e+06        2.5812e+06        2.5913e+06
10357.0        1.7162e+06        1.7161e+06        1.7163e+06
12694.6        5.9843e+05        5.9841e+05        5.9845e+05
14162.4        4.9621e+06        4.9386e+06        4.9860e+06
16069.7        1.1980e+06        1.1979e+06        1.1980e+06
16080.1        2.6316e+06        2.6237e+06        2.6395e+06
16301.9        1.4163e+06        1.4162e+06        1.4163e+06
18623.9        3.6294e+06        3.6258e+06        3.6330e+06
20280.4        8.2385e+05        8.2383e+05        8.2387e+05
23548.3        4.6763e+06        4.6762e+06        4.6764e+06
24690.0        1.1723e+06        1.1723e+06        1.1724e+06
25694.0        5.4900e+05        5.4899e+05        5.4901e+05
27116.0        2.5536e+06        2.5536e+06        2.5537e+06
28845.1        1.6430e+06        1.6430e+06        1.6430e+06
29041.5        2.5349e+06        2.5348e+06        2.5349e+06
29519.0        2.5811e+06        2.5811e+06        2.5812e+06
30419.5        1.8440e+06        1.8439e+06        1.8440e+06
31263.4        1.5940e+06        1.5940e+06        1.5941e+06
32136.9        4.5330e+06        4.5330e+06        4.5331e+06

2016-11-08 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1108.4        1.3404e+07        1.3360e+07        1.3447e+07
2542.2        6.9483e+06        6.9392e+06        6.9574e+06
4389.0        4.5933e+06        4.5528e+06        4.6345e+06
4427.6        5.0578e+06        5.0565e+06        5.0591e+06
4466.1        4.7063e+06        4.6660e+06        4.7473e+06
4495.1        2.2376e+05        2.2324e+05        2.2427e+05
6754.3        3.5768e+06        3.5759e+06        3.5777e+06
6767.1        1.2441e+07        1.2411e+07        1.2470e+07
6793.7        1.9583e+06        1.9581e+06        1.9584e+06
6832.2        2.0323e+06        2.0318e+06        2.0329e+06
6870.7        2.0027e+06        2.0026e+06        2.0029e+06
9512.8        2.7522e+06        2.7497e+06        2.7546e+06
10200.4        2.4866e+06        2.4793e+06        2.4938e+06
10357.0        1.6884e+06        1.6837e+06        1.6931e+06
12694.7        6.2234e+05        6.2231e+05        6.2236e+05
14162.3        5.4381e+06        5.4299e+06        5.4463e+06
16069.8        1.1596e+06        1.1595e+06        1.1596e+06
16080.2        2.5075e+06        2.5002e+06        2.5148e+06
16302.0        1.3303e+06        1.3302e+06        1.3303e+06
18624.0        3.6265e+06        3.6207e+06        3.6322e+06
20280.6        7.8640e+05        7.8638e+05        7.8642e+05
21342.5        6.1946e+06        6.1945e+06        6.1948e+06
23548.5        3.9191e+06        3.9190e+06        3.9191e+06
24690.1        1.0713e+06        1.0713e+06        1.0713e+06
28845.3        1.6909e+06        1.6909e+06        1.6910e+06
29041.7        2.6668e+06        2.6668e+06        2.6669e+06
29518.6        2.4022e+06        2.4022e+06        2.4022e+06
30419.3        1.5929e+06        1.5929e+06        1.5930e+06
31263.0        1.4750e+06        1.4750e+06        1.4751e+06
32136.8        4.1712e+06        4.1711e+06        4.1713e+06

 

  168   Tue Nov 8 17:09:20 2016 GabrieleGeneralMeasurementsS1600460

2016-11-08

  • 5:08pm, in chamber, balanced
  • 5:09pm, roughing pump on
  • 5:18pm, turbo pump on
  • 7:56: excitation. Quiet time before excitation 1162698977, excitation ampl. 3kV duration ~30s, quiet time after 1162700079
  • Three more excitation planned for the night
    • Quiet time before excitation: 1162710917
      Excitation at 1162710961 (30 s)
      Quiet time after excitation: 1162710991

    • Quiet time before excitation: 1162721821
      Excitation at 1162721865 (30 s)
      Quiet time after excitation: 1162721895

    • Quiet time before excitation: 1162732725
      Excitation at 1162732769 (30 s)
      Quiet time after excitation: 1162732799

  • The last two automatic excitation didn't go through. It seems to be the same problem as yesterday (which I "solved" by restarting the models)

2016-11-09

  • 8:37am, pumps off

Results

2016-11-08 A

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1119.5        6.6404e+05        6.4444e+05        6.8484e+05
2504.0        5.3952e+06        5.3663e+06        5.4245e+06
2505.5        5.4008e+06        5.3791e+06        5.4226e+06
2510.6        1.0237e+06        9.9922e+05        1.0495e+06
2537.5        5.5690e+05        5.5679e+05        5.5701e+05
2545.0        9.5810e+05        9.5676e+05        9.5944e+05
2552.0        7.5631e+05        7.5616e+05        7.5646e+05
2582.3        1.0468e+06        1.0373e+06        1.0565e+06
3377.5        1.2974e+06        1.2972e+06        1.2975e+06
4361.5        2.9905e+06        2.9870e+06        2.9940e+06
4390.0        1.5871e+05        1.5869e+05        1.5873e+05
4428.9        1.6234e+05        1.6226e+05        1.6242e+05
4467.5        1.6373e+05        1.6371e+05        1.6375e+05
6653.7        3.0794e+06        3.0779e+06        3.0809e+06
6670.1        1.0338e+07        1.0326e+07        1.0350e+07
6730.4        1.4921e+06        1.4893e+06        1.4949e+06
6798.0        3.5459e+05        3.5456e+05        3.5461e+05
9372.3        2.1885e+06        2.1875e+06        2.1895e+06
10055.0        1.6518e+06        1.6517e+06        1.6519e+06
10210.3        2.7007e+05        2.7005e+05        2.7008e+05
12507.3        1.6391e+06        1.6391e+06        1.6392e+06
13961.7        7.0939e+06        7.0387e+06        7.1500e+06
15837.2        2.0382e+06        2.0365e+06        2.0399e+06
15850.6        5.9047e+06        5.8559e+06        5.9543e+06
16064.1        1.8247e+06        1.8246e+06        1.8247e+06
18532.6        3.1042e+05        3.1041e+05        3.1043e+05
18797.0        1.8528e+06        1.8527e+06        1.8528e+06
19983.2        1.3315e+06        1.3196e+06        1.3436e+06
21043.9        6.7756e+06        6.3946e+06        7.2047e+06
22640.6        2.6064e+06        2.6063e+06        2.6064e+06
23218.7        4.4360e+06        4.4359e+06        4.4361e+06
24331.4        1.2956e+06        1.2955e+06        1.2956e+06
26268.9        5.9110e+05        5.9109e+05        5.9111e+05
26740.4        3.9234e+06        3.9234e+06        3.9235e+06
28436.5        2.8936e+06        2.8858e+06        2.9014e+06
28636.0        2.4942e+06        2.4941e+06        2.4942e+06
29140.0        5.9494e+05        5.9493e+05        5.9495e+05
30906.6        2.0991e+06        2.0991e+06        2.0991e+06
32340.0        1.9250e+06        1.9250e+06        1.9250e+06

2016-11-08 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1112.1        1.0416e+06        1.0354e+06        1.0479e+06
2224.6        1.0526e+06        1.0498e+06        1.0555e+06
2506.2        6.2467e+06        6.2222e+06        6.2715e+06
2511.0        9.1074e+05        8.9608e+05        9.2589e+05
2544.9        9.2936e+05        9.2745e+05        9.3127e+05
2579.0        9.3199e+05        9.2088e+05        9.4336e+05
2583.3        9.1765e+05        9.1228e+05        9.2308e+05
2778.1        2.6436e+06        2.6213e+06        2.6664e+06
3657.0        9.4905e+05        9.4892e+05        9.4918e+05
4323.0        2.7441e+06        2.6975e+06        2.7924e+06
4361.4        2.9870e+06        2.9852e+06        2.9887e+06
5618.3        9.7528e+05        9.7519e+05        9.7536e+05
6653.7        2.9851e+06        2.9799e+06        2.9903e+06
6670.0        1.0065e+07        1.0049e+07        1.0081e+07
6691.7        1.4940e+06        1.4774e+06        1.5110e+06
6723.0        9.4356e+04        9.4349e+04        9.4363e+04
6730.5        1.5010e+06        1.5000e+06        1.5021e+06
6737.7        9.3824e+04        9.3817e+04        9.3831e+04
6769.0        1.4817e+06        1.4683e+06        1.4954e+06
6797.8        3.4621e+05        3.4618e+05        3.4623e+05
7842.6        1.3638e+06        1.3637e+06        1.3639e+06
9372.2        2.1002e+06        2.0979e+06        2.1025e+06
10055.0        1.6575e+06        1.6417e+06        1.6735e+06
10210.0        2.7696e+05        2.7694e+05        2.7697e+05
12507.3        1.5841e+06        1.5824e+06        1.5858e+06
13961.5        6.9382e+06        6.8656e+06        7.0122e+06
15837.2        1.9985e+06        1.9964e+06        2.0006e+06
15850.6        5.9234e+06        5.9232e+06        5.9236e+06
16064.0        1.7705e+06        1.7704e+06        1.7705e+06
18361.4        2.5816e+06        2.5815e+06        2.5817e+06
19983.2        1.3972e+06        1.3907e+06        1.4038e+06
21043.9        9.7066e+06        8.8724e+06        1.0714e+07
22640.9        2.8173e+06        2.8173e+06        2.8174e+06
23218.7        4.2100e+06        4.2099e+06        4.2101e+06
24331.1        1.2336e+06        1.2336e+06        1.2336e+06
28436.4        2.7860e+06        2.7860e+06        2.7861e+06
28635.6        2.7569e+06        2.7568e+06        2.7569e+06

 

  169   Wed Nov 9 09:56:50 2016 GabrieleGeneralMeasurementsS1600461

2016-11-09

  • 9:45am in chamber, balanced
  • 9:46am roughing pump on
  • 9:57am turbo pump on
  • 1:02pm: quiet time before excitation 1162760526, excitation ampl. 3kV, duration ~20s, quiet time after 1162760661
  • 2:25pm, another excitation, quiet time after 1162765583
  • 3:30pm, pumps off

Results

2016-11-08 A

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1112.3        1.5917e+07        1.5885e+07        1.5948e+07
1944.9        2.7053e+07        2.6225e+07        2.7935e+07
2512.9        5.8309e+05        5.8297e+05        5.8321e+05
2551.4        6.1779e+05        6.1606e+05        6.1953e+05
4444.4        6.9722e+05        6.9646e+05        6.9798e+05
4471.6        1.6717e+05        1.6715e+05        1.6719e+05
4502.5        5.2860e+04        5.2854e+04        5.2866e+04
4510.2        1.7001e+05        1.6995e+05        1.7008e+05
4518.0        5.2761e+04        5.2755e+04        5.2767e+04
4548.8        1.6907e+05        1.6906e+05        1.6909e+05
6741.5        1.6607e+06        1.6606e+06        1.6608e+06
6780.0        1.6527e+06        1.6523e+06        1.6531e+06
6803.6        9.9399e+06        9.9362e+06        9.9437e+06
6818.5        1.6635e+06        1.6633e+06        1.6636e+06
6856.0        1.2917e+06        1.2866e+06        1.2968e+06
9548.9        6.6037e+05        6.5927e+05        6.6147e+05
10252.2        1.1877e+07        1.1873e+07        1.1881e+07
10406.4        9.5454e+05        9.5449e+05        9.5458e+05
12742.3        2.5129e+05        2.5128e+05        2.5130e+05
14231.9        5.2480e+05        5.2478e+05        5.2482e+05
16143.0        2.1547e+06        2.1546e+06        2.1547e+06
16165.5        9.9736e+06        9.9305e+06        1.0017e+07
16324.1        2.0684e+06        2.0684e+06        2.0685e+06
16362.7        2.0847e+06        2.0838e+06        2.0857e+06
16401.2        2.0931e+06        2.0931e+06        2.0932e+06
18713.5        3.0002e+06        3.0001e+06        3.0002e+06
20305.5        3.7687e+05        3.7686e+05        3.7688e+05
20356.6        5.7487e+05        5.7486e+05        5.7488e+05
21448.8        5.5873e+06        5.5759e+06        5.5988e+06
23660.7        3.4572e+06        3.4454e+06        3.4690e+06
24779.6        6.1454e+05        6.1453e+05        6.1455e+05
27248.5        4.3485e+06        4.3485e+06        4.3486e+06
29080.9        3.2828e+06        3.2828e+06        3.2829e+06
29192.0        1.1073e+07        1.0994e+07        1.1153e+07
29668.3        1.1949e+06        1.1949e+06        1.1949e+06
31978.4        3.9904e+06        3.9904e+06        3.9905e+06

2016-11-09 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1112.3        1.5872e+07        1.5840e+07        1.5903e+07
1945.0        2.9329e+07        2.8527e+07        3.0177e+07
2224.4        1.6491e+07        1.6262e+07        1.6727e+07
2512.9        7.2946e+05        7.2513e+05        7.3384e+05
2551.5        7.7884e+05        7.7715e+05        7.8054e+05
4444.4        6.8441e+05        6.8422e+05        6.8459e+05
4471.6        1.7717e+05        1.7715e+05        1.7719e+05
4502.5        6.9790e+04        6.9783e+04        6.9798e+04
4510.3        1.7365e+05        1.7357e+05        1.7373e+05
4517.7        6.9972e+04        6.9964e+04        6.9980e+04
4548.8        1.7984e+05        1.7982e+05        1.7986e+05
6741.5        1.7916e+06        1.7915e+06        1.7917e+06
6780.0        1.8821e+06        1.8817e+06        1.8825e+06
6803.6        1.1061e+07        1.1050e+07        1.1071e+07
6818.5        1.8161e+06        1.8160e+06        1.8163e+06
6855.9        1.3496e+06        1.3472e+06        1.3521e+06
9549.0        6.6677e+05        6.6557e+05        6.6798e+05
10252.1        1.1961e+07        1.1945e+07        1.1977e+07
10406.4        9.8990e+05        9.8647e+05        9.9336e+05
12742.4        2.3726e+05        2.3725e+05        2.3727e+05
12829.0        3.7039e+05        3.7038e+05        3.7041e+05
12860.0        1.6576e+05        1.6576e+05        1.6577e+05
12867.9        3.7196e+05        3.6849e+05        3.7549e+05
12875.0        1.6658e+05        1.6657e+05        1.6658e+05
14231.9        5.1978e+05        5.1976e+05        5.1980e+05
16143.0        2.2069e+06        2.2068e+06        2.2069e+06
16165.5        1.0126e+07        1.0110e+07        1.0143e+07
16324.3        2.0036e+06        2.0035e+06        2.0036e+06
16362.7        2.0305e+06        2.0295e+06        2.0316e+06
16401.4        2.0320e+06        2.0319e+06        2.0320e+06
20356.7        5.8725e+05        5.8724e+05        5.8727e+05
21449.0        7.7227e+06        7.6377e+06        7.8096e+06
23660.8        3.2698e+06        3.2604e+06        3.2792e+06
24779.8        6.2124e+05        6.2123e+05        6.2125e+05
27248.5        4.2218e+06        4.2217e+06        4.2219e+06
29081.0        3.3153e+06        3.3152e+06        3.3153e+06
29192.1        1.0923e+07        1.0847e+07        1.1000e+07
29668.0        1.2406e+06        1.2406e+06        1.2407e+06
31978.4        3.5580e+06        3.5580e+06        3.5581e+06

 

Attachment 3: ringdowns.png
ringdowns.png
  170   Wed Nov 9 15:32:11 2016 GabrieleGeneralNoise huntingNoise below 2 kHz is not due to the roughing pump, but to the clean air filters

The two spectra below show basically no difference (blue roughing pump on, red, roughing pump off)

Instead, below is another comparison: blue same as before, standard condition, red with one of the two clean air filters momentarily off. There is some clear improvement. The second filter is too hard to switch off!

  171   Wed Nov 9 16:25:21 2016 GabrieleGeneralMeasurementsS1600463

2016-11-09

  • 4:24pm, in chamber, balanced
  • 4:25pm, roughing pump on
  • 4:37, turbo pump on
  • 6:44pm: excitation 3kV, ~30s. Quiet time before 1162781217, quiet time after 1162781428
  • 9:12pm; excitation 3kV, ~30s, Quiet time before 1162789967, quiet time after 1162790079
  • two more excitations planned for the night

2016-11-10

  • 8:46am, pumps off

Results

2016-11-09 A

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1099.5        1.0066e+07        1.0046e+07        1.0086e+07
2521.9        5.7421e+06        5.7384e+06        5.7458e+06
4392.7        3.5549e+06        3.5484e+06        3.5613e+06
4458.8        1.1698e+05        1.1608e+05        1.1790e+05
6701.0        3.0215e+06        3.0192e+06        3.0239e+06
6719.8        1.1624e+07        1.1611e+07        1.1637e+07
6777.1        1.8900e+06        1.8890e+06        1.8910e+06
9438.3        2.4180e+06        2.4002e+06        2.4362e+06
10129.8        1.2106e+06        1.2093e+06        1.2120e+06
10284.4        1.3457e+06        1.3388e+06        1.3527e+06
12595.2        1.6405e+06        1.6305e+06        1.6507e+06
14065.3        8.5283e+06        8.5246e+06        8.5320e+06
15952.1        1.8901e+06        1.8839e+06        1.8964e+06
15966.8        7.1163e+06        7.1087e+06        7.1239e+06
16177.1        1.5698e+06        1.5615e+06        1.5782e+06
21197.9        6.1736e+06        6.1661e+06        6.1812e+06
23390.2        3.3534e+06        3.3460e+06        3.3608e+06
24497.3        1.4166e+06        1.4166e+06        1.4166e+06
25987.4        6.7031e+05        6.7029e+05        6.7032e+05
26935.8        3.9783e+06        3.9417e+06        4.0156e+06
28641.0        2.5059e+06        2.4891e+06        2.5229e+06
28845.9        4.8941e+06        4.8735e+06        4.9149e+06
29758.0        6.6465e+06        6.6350e+06        6.6580e+06

2016-11-09 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1099.5        9.7632e+06        9.7168e+06        9.8100e+06
2521.9        5.2682e+06        5.2631e+06        5.2733e+06
4392.7        3.3298e+06        3.3290e+06        3.3307e+06
4458.8        1.1263e+05        1.1219e+05        1.1307e+05
6700.9        2.8184e+06        2.8131e+06        2.8237e+06
6719.7        1.1530e+07        1.1520e+07        1.1540e+07
6777.1        1.8290e+06        1.8255e+06        1.8325e+06
9438.4        2.2950e+06        2.2714e+06        2.3191e+06
10129.8        1.1372e+06        1.1363e+06        1.1381e+06
10284.4        1.3204e+06        1.3176e+06        1.3231e+06
12595.2        1.5333e+06        1.5294e+06        1.5373e+06
14065.3        7.9394e+06        7.9358e+06        7.9431e+06
15952.1        9.8727e+05        9.8514e+05        9.8941e+05
15966.8        5.4806e+06        5.4721e+06        5.4892e+06
16177.1        1.5194e+06        1.5113e+06        1.5275e+06
23390.1        3.1415e+06        3.1342e+06        3.1489e+06
24497.0        1.3865e+06        1.3865e+06        1.3865e+06
26935.7        4.8356e+06        4.8222e+06        4.8491e+06
28641.0        2.3571e+06        2.3347e+06        2.3799e+06
28845.9        4.6321e+06        4.6008e+06        4.6638e+06
29757.9        4.3171e+06        4.2818e+06        4.3530e+06

 

  172   Thu Nov 10 10:03:17 2016 GabrieleGeneralMeasurementsS1600465

2016-11-10

  • 10:01am, in chamber, balanced
  • 10:03am, roughing pump on
  • 10:23am, turbo pump on
  • 12:16pm excitation (3kV, ~20s), quiet time before 1162844853, quiet time after 1162844912.
    • This was lost because the frame disk was full and the wiper.pl script was not running!!! The crontab was pointing to x1 instead of x3
    • I deleted some old frame files and updated the crontab. The problem should be fixed now
  • 1:50pm, excitation (3kV, ~30s), quiet time before 1162850776, quiet time after 1162850868
  • 2:50pm, excitation (1.9kV, ~30s), quiet time before 1162853341, quiet time after 1162853481
  • 3:40pm, pumps off

Results

Q's are low!

2016-11-10 A



% Freq        Q                Q (C.I. 95%)       Q (C.I. 95%)
1095.0        1.2015e+06        1.1994e+06        1.2036e+06
2472.1        1.2645e+06        1.2565e+06        1.2726e+06
2510.4        1.2525e+06        1.2519e+06        1.2531e+06
2548.4        7.3296e+05        7.3138e+05        7.3454e+05
2587.0        7.5560e+05        7.4510e+05        7.6639e+05
4371.3        1.0427e+06        1.0421e+06        1.0432e+06
4433.9        1.8185e+05        1.8162e+05        1.8209e+05
6667.0        8.1669e+05        8.1586e+05        8.1753e+05
6680.7        3.9680e+06        3.9658e+06        3.9703e+06
6739.0        1.0240e+06        1.0235e+06        1.0244e+06
6799.2        4.1092e+05        4.1047e+05        4.1137e+05
9388.7        7.9932e+05        7.9878e+05        7.9987e+05
10217.9        1.7660e+05        1.7609e+05        1.7713e+05
11445.0        5.8959e+04        5.8957e+04        5.8962e+04
12527.0        4.6659e+05        4.6255e+05        4.7070e+05
13982.6        1.1515e+06        1.1474e+06        1.1556e+06
15869.2        3.1943e+05        3.1778e+05        3.2111e+05
15877.7        3.0831e+05        3.0830e+05        3.0832e+05
16084.0        1.8992e+05        1.8991e+05        1.8992e+05
23254.4        1.8849e+05        1.8848e+05        1.8849e+05
26771.4        1.1868e+06        1.1776e+06        1.1960e+06
28495.1        3.9945e+05        3.9944e+05        3.9945e+05
28679.0        6.9279e+05        6.9278e+05        6.9280e+05

2016-11-10 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1095.0        1.1892e+06        1.1858e+06        1.1927e+06
2472.0        1.2834e+06        1.2655e+06        1.3017e+06
2510.4        1.2882e+06        1.2870e+06        1.2894e+06
2548.4        7.5857e+05        7.5706e+05        7.6009e+05
2558.0        5.0671e+05        4.6908e+05        5.5088e+05
2586.7        7.6939e+05        7.5984e+05        7.7918e+05
4371.3        1.0269e+06        1.0262e+06        1.0276e+06
4433.9        1.8067e+05        1.8050e+05        1.8085e+05
6667.0        8.1092e+05        8.0996e+05        8.1188e+05
6680.7        3.9209e+06        3.9199e+06        3.9219e+06
6739.1        1.0166e+06        1.0162e+06        1.0169e+06
6777.0        9.9454e+05        9.7718e+05        1.0125e+06
6799.4        4.1306e+05        4.1258e+05        4.1354e+05
9388.7        7.9169e+05        7.9094e+05        7.9243e+05
10218.0        1.7477e+05        1.7442e+05        1.7512e+05
11445.0        6.0272e+04        6.0269e+04        6.0274e+04
12526.8        4.6954e+05        4.6279e+05        4.7648e+05
13982.6        1.1871e+06        1.1852e+06        1.1889e+06
15869.4        3.5465e+05        3.5146e+05        3.5791e+05
15877.6        3.4842e+05        3.4841e+05        3.4843e+05
26771.5        1.7623e+06        1.7588e+06        1.7659e+06
28495.2        1.0461e+06        1.0343e+06        1.0582e+06
28679.3        2.5088e+06        2.5088e+06        2.5089e+06
Attachment 1: spectra.png
spectra.png
Attachment 2: peaks.png
peaks.png
  173   Thu Nov 10 14:13:34 2016 gabrieleElectronicsConfigurationMATLAB code to control Thorlabs stages

To be used to automate the laser polishing.

Attachment 1: move_complete.m
function move_complete(varargin)
    global moving;
    moving = false;
end
Attachment 2: throlabs_activex.m
%% init the controllers
f1 = figure();
f2 = figure();
tstage = actxcontrol('MGMOTOR.MGMotorCtrl.1', [20 20 600 400], f1);
rstage = actxcontrol('MGMOTOR.MGMotorCtrl.1', [20 20 600 400], f2);
set(tstage, 'HWSerialNum', 27001029);
set(rstage, 'HWSerialNum', 27501183);
tstage.StartCtrl();
rstage.StartCtrl();

... 119 more lines ...
Attachment 3: animation.m
% try a sequence of movements

figure()

% laser position
a0 = acos(36/(75/2));  
laser = [-75/2*sin(a0), 75/2*cos(a0)];

% initial position
t = 0;
... 59 more lines ...
Attachment 4: draw_wafer.m
function draw_wafer(translation, angle, laser)
    d = 75; % diameter
    f = 36; % distance of flat from center
    
    a = acos(f/(d/2));  % half angle opening of the flat
    
    % build wafer in reference position and orientation
    phi = [linspace(a, pi-a, 100), linspace(pi+a, 2*pi-a, 100)];
    coordinates = [-d/2*cos(phi); d/2*sin(phi)]';
    coordinates(end+1,:) = coordinates(1,:);
... 25 more lines ...
  174   Thu Nov 10 16:07:13 2016 Alena, CalumGeneralGeneralAnnealing run

Annealing run (466-471) on 3" wafers - Crime 11/10/2016

https://dcc.ligo.org/LIGO-T1600524

  175   Thu Nov 10 16:13:46 2016 GabrieleGeneralMeasurementsS1600450 again

Noticed a small chip on the side, marked as damaged

2016-11-10

  • 4:00pm, optical setup realigned to horizontal reference
  • 4:12pm, sample in chamber, balanced
  • 4:13pm, roughing pump on
  • 4:24pm, turbo pump on
  • 7:40pm excitation (2kV, 30 s), quiet time before 1162870778, quiet time after 1162870905
  • Three more excitations planned for the night
    • Quiet time before excitation: 1162886983
      Excitation at 1162887027 (30 s)
      Quiet time after excitation: 1162887057

    • Quiet time before excitation: 1162897887
      Excitation at 1162897931 (30 s)
      Quiet time after excitation: 1162897961

    • Quiet time before excitation: 1162908791
      Excitation at 1162908835 (30 s)
      Quiet time after excitation: 1162908865

 

2016-11-11

  • 7:50am pumps off

Results

2016-11-10 A

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1102.0        5.3024e+06        5.2839e+06        5.3211e+06
2527.2        2.9856e+06        2.9823e+06        2.9889e+06
2567.4        8.6286e+05        8.5588e+05        8.6995e+05
2788.4        4.6339e+06        4.5542e+06        4.7165e+06
4401.7        1.8540e+06        1.8535e+06        1.8545e+06
4467.4        2.2187e+05        2.2126e+05        2.2248e+05
6713.8        1.4683e+06        1.4679e+06        1.4688e+06
6724.1        6.5991e+06        6.5929e+06        6.6053e+06
6787.9        1.1469e+06        1.1464e+06        1.1474e+06
6853.4        1.1702e+05        1.1657e+05        1.1748e+05
9456.6        1.1755e+06        1.1751e+06        1.1759e+06
10293.0        1.7976e+05        1.7975e+05        1.7977e+05
12619.6        5.9997e+05        5.9686e+05        6.0312e+05
12741.1        2.0405e+05        2.0224e+05        2.0589e+05
14079.9        3.5517e+06        3.5500e+06        3.5535e+06
15976.5        8.4967e+05        8.4690e+05        8.5246e+05
16205.5        9.4038e+05        9.3824e+05        9.4252e+05
18518.2        4.1016e+05        4.0891e+05        4.1141e+05
20106.4        3.0991e+05        3.0990e+05        3.0991e+05
23418.5        1.6833e+06        1.6780e+06        1.6886e+06
25592.6        1.3253e+06        1.3253e+06        1.3254e+06
26956.2        1.3545e+06        1.3545e+06        1.3545e+06
28687.0        9.9537e+05        9.8974e+05        1.0011e+06
28776.0        1.0314e+06        1.0254e+06        1.0374e+06
28861.5        4.1845e+06        4.1844e+06        4.1846e+06
29732.6        1.0816e+06        1.0815e+06        1.0816e+06

2016-11-10 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1101.7        5.2606e+06        5.2430e+06        5.2782e+06
2527.4        2.9196e+06        2.9186e+06        2.9206e+06
2567.3        8.0586e+05        8.0324e+05        8.0850e+05
4401.8        1.8612e+06        1.8609e+06        1.8616e+06
4467.4        2.1847e+05        2.1824e+05        2.1869e+05
6713.8        1.4727e+06        1.4724e+06        1.4730e+06
6724.0        6.6231e+06        6.6191e+06        6.6271e+06
6787.9        1.1299e+06        1.1296e+06        1.1302e+06
6853.2        1.2340e+05        1.2273e+05        1.2408e+05
9456.6        1.1774e+06        1.1772e+06        1.1777e+06
14079.8        3.7293e+06        3.7020e+06        3.7570e+06
15976.3        9.2595e+05        9.2298e+05        9.2894e+05
16205.5        9.2283e+05        9.1471e+05        9.3111e+05
18518.1        3.9478e+05        3.9477e+05        3.9479e+05
23418.5        1.4435e+06        1.4305e+06        1.4567e+06
26956.3        4.3919e+06        4.3824e+06        4.4015e+06
28686.9        8.1295e+05        8.0911e+05        8.1682e+05
28776.0        9.3826e+05        9.3824e+05        9.3827e+05
28861.5        3.1460e+06        3.1028e+06        3.1903e+06

 

  176   Thu Nov 10 17:04:05 2016 GabrieleGeneralNoise huntingTemporary second QPD

This morning I installed temporarily a second QPD to monitor the input beam. The goal was to understand where the vibrations at frequencies below 2kHz couple from. As shown in the photo, the second QPD was close to the first one.

The signals in the two QPDs were quite different, and the coherence between them wasn't great. So I concluded that the main coupling path is not through input beam of QPD vibration, but more likely real motion of the disk.

I removed the additional QPD and restored the setup to its nominal configuration. The readout infrastructure is still in the model.

  177   Fri Nov 11 10:29:57 2016 GabrieleGeneralMeasurementsS1600454

Note: Marked at "damaged?" by Alena

2016-11-11

  • 10:28am, in chamber, balanced
  • 10:29am, roughing pump started
  • 10:42am, turbo pump started
  • 12:50am, excitation 2kV, 30s , quiet time before 1162929094+30s, quiet time after 1162929206+30s
    • something happened after ~850 seconds...
  • 1:42pm, excitation 2kV, 30s, quiet time before 1162935703+30s, quiet time after 1162935801+30s
  • 3:07pm, pumps stopped

Results

2016-11-11 A

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1113.5        1.1749e+07        1.1593e+07        1.1908e+07
2553.4        4.0388e+06        4.0359e+06        4.0417e+06
4446.6        4.6170e+06        4.6141e+06        4.6199e+06
4514.3        2.9059e+05        2.9012e+05        2.9107e+05
6782.6        1.0254e+06        1.0241e+06        1.0266e+06
6801.5        1.9269e+06        1.9255e+06        1.9282e+06
6860.7        1.3774e+06        1.3769e+06        1.3779e+06
9552.2        1.9909e+06        1.9848e+06        1.9971e+06
10407.0        2.5039e+06        2.5001e+06        2.5078e+06
12746.0        1.1864e+06        1.1843e+06        1.1885e+06
14230.5        8.0322e+05        8.0158e+05        8.0486e+05
16141.9        6.6250e+05        6.5746e+05        6.6761e+05
16160.8        3.9976e+06        3.9902e+06        4.0050e+06
16367.6        1.4247e+06        1.4121e+06        1.4376e+06
18888.5        1.1559e+05        1.1559e+05        1.1560e+05
21839.5        1.0733e+06        1.0733e+06        1.0734e+06
23660.1        5.7483e+05        5.7481e+05        5.7484e+05
24786.0        8.8886e+05        8.8884e+05        8.8887e+05
25534.0        6.0001e+05        6.0000e+05        6.0002e+05
27247.3        1.2955e+06        1.2955e+06        1.2956e+06
28977.5        1.2581e+06        1.2581e+06        1.2581e+06
29076.5        1.2993e+06        1.2934e+06        1.3052e+06
29342.0        1.2664e+06        1.2664e+06        1.2665e+06
31088.0        4.7656e+05        4.7655e+05        4.7657e+05
31713.0        1.6862e+06        1.6862e+06        1.6862e+06

2016-11-11 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1113.5        4.6063e+06        4.5931e+06        4.6196e+06
2553.5        4.8384e+05        4.7913e+05        4.8864e+05
2594.3        6.9375e+05        6.9006e+05        6.9748e+05
4446.5        3.6254e+06        3.6244e+06        3.6265e+06
4514.3        2.8637e+05        2.8360e+05        2.8918e+05
6782.7        1.6890e+06        1.6826e+06        1.6954e+06
6801.5        3.6093e+06        3.5426e+06        3.6786e+06
6860.7        1.3362e+06        1.3356e+06        1.3368e+06
9552.2        1.6879e+06        1.6392e+06        1.7395e+06
10407.1        2.6518e+06        2.6339e+06        2.6699e+06
12746.1        1.1566e+06        1.1388e+06        1.1750e+06
14230.6        8.4460e+05        8.3550e+05        8.5390e+05
16142.0        6.0038e+05        6.0036e+05        6.0039e+05
16160.9        3.5967e+06        3.5844e+06        3.6090e+06
16367.8        1.0885e+06        1.0782e+06        1.0991e+06
27247.6        1.1635e+06        1.1039e+06        1.2299e+06
28977.8        1.2100e+06        1.2100e+06        1.2100e+06
29076.9        1.7618e+06        1.7392e+06        1.7851e+06
29186.8        3.2163e+06        3.2162e+06        3.2164e+06
29341.5        1.0715e+06        1.0714e+06        1.0715e+06
29680.0        1.1609e+06        1.1608e+06        1.1609e+06
31976.4        1.0149e+06        1.0149e+06        1.0149e+06

 

Attachment 5: spectra.png
spectra.png
  178   Fri Nov 11 16:38:23 2016 GabrieleGeneralMeasurementsS1600466

2016-11-11

  • 4:36pm, in chamber, balanced
  • 4:38pm roughing pump on
  • 4:48pm turbo pump on
  • 7:30pm excitation (2kV, 30s), quiet time before 1162956576+30s, quiet time after 1162956694+30s
  • three more excitation planned during the night`
    • Quiet time before excitation: 1162968737
      Excitation at 1162968781 (30 s)
      Excitation finished
      Quiet time after excitation: 1162968811

    • Quiet time before excitation: 1162979641
      Excitation at 1162979685 (30 s)
      Excitation finished
      Quiet time after excitation: 1162979715

    • Quiet time before excitation: 1162990545
      Excitation at 1162990589 (30 s)
      Excitation finished
      Quiet time after excitation: 1162990619

  • Those excitation didn't go through (I'll have to figure out what the problem wth the real time model is...)

2016-11-12

  • 7:15am, another excitation (2-3 kV, 30s). Quiet time before 1162998878, quiet time after 1162999026

  • 9:04am, pumps stopped

Results

2016-11-11

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1090.5        1.6675e+07        1.6206e+07        1.7172e+07
2501.2        1.1191e+07        1.1163e+07        1.1220e+07
2542.4        4.0691e+05        4.0503e+05        4.0880e+05
4355.2        7.2116e+06        7.2078e+06        7.2154e+06
4423.9        1.5223e+05        1.5221e+05        1.5225e+05
6644.0        4.3292e+06        4.3171e+06        4.3413e+06
6653.5        2.0495e+07        2.0453e+07        2.0537e+07
6722.2        1.6917e+06        1.6891e+06        1.6944e+06
9359.2        3.9201e+06        3.9166e+06        3.9236e+06
10191.7        2.0209e+06        1.9986e+06        2.0438e+06
12490.8        2.5034e+06        2.4804e+06        2.5268e+06
13931.5        1.1993e+07        1.1964e+07        1.2022e+07
15805.0        1.8647e+06        1.8485e+06        1.8812e+06
15811.9        1.1364e+07        1.1336e+07        1.1393e+07
16043.3        1.7186e+06        1.7092e+06        1.7280e+06
18284.5        8.9726e+05        8.9723e+05        8.9728e+05
18497.9        1.0294e+06        1.0208e+06        1.0381e+06
23172.4        4.9055e+06        4.8967e+06        4.9144e+06
24848.5        1.8458e+06        1.8458e+06        1.8458e+06
25987.0        7.9809e+06        7.7772e+06        8.1957e+06
26683.2        1.1400e+07        1.1386e+07        1.1415e+07
28376.3        6.5734e+06        6.5135e+06        6.6345e+06
28473.4        3.8361e+06        3.7811e+06        3.8928e+06
28568.4        1.3993e+07        1.3893e+07        1.4094e+07
30095.6        1.3830e+07        1.3633e+07        1.4032e+07
30952.0        3.3822e+06        3.3822e+06        3.3823e+06
31828.1        2.6835e+06        2.6834e+06        2.6835e+06
32406.5        2.0068e+06        2.0067e+06        2.0068e+06

2016-11-12

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1090.5        1.8006e+07        1.5301e+07        2.1867e+07
2501.0        1.0560e+07        1.0530e+07        1.0590e+07
2542.5        4.4638e+05        4.4567e+05        4.4710e+05
4355.2        7.1326e+06        7.1296e+06        7.1356e+06
4424.1        1.6117e+05        1.5314e+05        1.7008e+05
6644.0        4.5510e+06        4.5445e+06        4.5576e+06
6653.5        2.1827e+07        2.1806e+07        2.1848e+07
6722.2        2.1486e+06        2.1473e+06        2.1500e+06
9359.2        2.2299e+06        2.2212e+06        2.2388e+06
10191.7        2.1281e+06        2.0397e+06        2.2245e+06
12362.5        3.7022e+06        3.7021e+06        3.7024e+06
12490.9        2.7104e+06        2.6974e+06        2.7236e+06
13931.6        1.2366e+07        1.2325e+07        1.2408e+07
15805.1        1.8549e+06        1.8481e+06        1.8617e+06
15811.9        1.1797e+07        1.1776e+07        1.1819e+07
16043.4        2.5330e+06        2.5192e+06        2.5469e+06
18498.0        8.0772e+05        8.0770e+05        8.0774e+05
22735.0        8.2479e+06        8.2477e+06        8.2481e+06
23172.5        5.0380e+06        5.0154e+06        5.0608e+06
24301.0        1.8758e+06        1.8758e+06        1.8759e+06
24848.3        2.3044e+06        2.3043e+06        2.3044e+06
25987.0        7.6224e+06        7.6223e+06        7.6226e+06
26322.0        1.0341e+06        1.0341e+06        1.0341e+06
26683.4        1.1224e+07        1.1194e+07        1.1254e+07
28473.5        3.8882e+06        3.8157e+06        3.9636e+06
28568.5        1.4189e+07        1.4141e+07        1.4237e+07
29067.6        4.7110e+05        4.7110e+05        4.7111e+05
30095.4        1.3861e+07        1.3739e+07        1.3986e+07
30951.9        3.4868e+06        3.4626e+06        3.5112e+06
31828.0        2.9665e+06        2.9352e+06        2.9985e+06
32406.0        2.2123e+06        2.2123e+06        2.2124e+06

 

  179   Sat Nov 12 09:39:46 2016 GabrieleGeneralMeasurementsS1600468

2016-11-12

  • 9:39am, in chamber, balanced
  • 9:39am, roughing pump on
  • 9:52, turbo pump on
  • 12:14pm, excitation: first band passed around 1100 Hz (using filter bank FM5) with amplitude 3kV, then usual broadband with amplitude 3 kV
    • quiet time after 1163016908
  • 2:50pm, excitation as above, quiet time before  1163026243, quiet time after 1163026429
  • 3:28pm, the previous excitations didn't work very well, done anothe one. Quiet time after 1163028556
  • 7:09pm, another excitation (3kV, 30s). Quiet time before 1163041791, quiet time after 1163041952. This is good
  • 9:04pm, another excitation (3kV, 60s). Quiet time before 1163048623, quiet time after 1163048849

2016-11-13

  • 10:00am pumps off

Results

2016-11-12 A

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1107.0        1.2271e+07        1.2230e+07        1.2313e+07
2538.2        6.7299e+06        6.7276e+06        6.7322e+06
2580.0        1.0201e+06        1.0045e+06        1.0363e+06
4420.2        3.3946e+06        3.3932e+06        3.3961e+06
4488.3        3.4539e+05        3.4499e+05        3.4579e+05
6742.6        3.4664e+06        3.4654e+06        3.4674e+06
6756.0        1.2338e+07        1.2297e+07        1.2379e+07
6820.8        2.7783e+06        2.7774e+06        2.7792e+06
9496.3        8.6303e+05        8.6269e+05        8.6338e+05
10183.4        1.0287e+06        1.0276e+06        1.0299e+06
12672.0        6.7333e+05        6.7053e+05        6.7615e+05
14139.4        4.5748e+06        4.5636e+06        4.5860e+06
16039.5        1.6091e+06        1.6057e+06        1.6126e+06
16053.5        8.2144e+06        8.2061e+06        8.2228e+06
16273.4        1.4619e+06        1.4573e+06        1.4666e+06
18594.2        5.2728e+05        5.2726e+05        5.2729e+05
20185.4        6.2639e+05        6.2637e+05        6.2641e+05
20243.0        4.9019e+05        4.9017e+05        4.9020e+05
23511.8        5.6831e+05        5.6830e+05        5.6832e+05
24645.2        5.2455e+05        5.2454e+05        5.2456e+05
25430.0        9.6495e+05        9.6493e+05        9.6497e+05
28797.5        1.8557e+06        1.8557e+06        1.8558e+06
28898.6        2.0557e+06        2.0417e+06        2.0699e+06
28996.1        3.8089e+06        3.7871e+06        3.8310e+06
29501.6        4.9763e+05        4.9762e+05        4.9764e+05
29575.6        2.9382e+06        2.9381e+06        2.9382e+06
31293.5        7.5105e+05        7.5104e+05        7.5106e+05

2016-11-12 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
2538.3        6.6590e+06        6.6535e+06        6.6646e+06
4420.1        3.3867e+06        3.3854e+06        3.3880e+06
4488.3        3.5406e+05        3.5393e+05        3.5419e+05
6742.6        3.4635e+06        3.4583e+06        3.4687e+06
6756.0        1.4419e+07        1.4103e+07        1.4750e+07
6820.9        2.7751e+06        2.7729e+06        2.7773e+06
9496.3        8.1276e+05        8.1239e+05        8.1313e+05
10183.4        1.0124e+06        1.0091e+06        1.0157e+06
11422.5        7.7922e+04        7.7919e+04        7.7926e+04
12672.0        6.6570e+05        6.6414e+05        6.6727e+05
14139.4        5.3701e+06        5.3570e+06        5.3832e+06
16039.5        1.7203e+06        1.7179e+06        1.7227e+06
16053.5        8.2568e+06        8.2438e+06        8.2699e+06
16273.4        1.4714e+06        1.4656e+06        1.4773e+06
18225.0        7.3060e+05        7.3058e+05        7.3062e+05
18594.2        5.3148e+05        5.3147e+05        5.3150e+05
20185.1        6.3606e+05        6.3604e+05        6.3607e+05
20243.1        4.9319e+05        4.9317e+05        4.9320e+05
23511.7        5.9188e+05        5.9187e+05        5.9189e+05
24251.5        5.1792e+05        5.1791e+05        5.1793e+05
24645.2        5.1672e+05        5.1671e+05        5.1674e+05
27387.0        2.8928e+05        2.8927e+05        2.8929e+05
28797.6        2.0240e+06        2.0239e+06        2.0240e+06
28898.6        2.0321e+06        2.0198e+06        2.0446e+06
28996.1        3.7763e+06        3.7127e+06        3.8421e+06
29473.0        2.5233e+05        2.5233e+05        2.5233e+05
29575.6        2.8365e+06        2.8364e+06        2.8365e+06
31293.4        7.5482e+05        7.5481e+05        7.5483e+05
31924.4        2.0841e+06        2.0840e+06        2.0841e+06
32187.5        1.0967e+06        1.0967e+06        1.0967e+06
  180   Sat Nov 12 09:49:07 2016 GabrieleGeneralMeasurements12 substrates ready for Montreal

The 12 following substrates have been measured and are ready for the first coating experiment in Montreal:

  181   Sun Nov 13 10:11:19 2016 GabrieleGeneralNoise huntingNoise due to air

The plot below compares the QPD signal spectra in different configurations (roughing pump on/off, air on/off).

The noise below ~<2kHz is making very hard to measure the Q of the first mode at 1100 Hz

The main source of noise are the clean air filters. I switched them to minimum for the moment being.

  182   Sun Nov 13 10:40:16 2016 GabrieleGeneralMeasurementsS1600469

2016-11-13

  • 10:39am in chamber, balanced
  • 10:40am, roughing pump on
  • 10:49am, turbo pump on
  • 1:21pm, excitation (3 kV, 30s), quiet time before 1163107279, quiet time after 1163107415
  • 4:20pm, excitation (3kV, 30s) quiet time before 1163118070, quiet time after 1163118145
  • 6:34pm, pumps off

Results

2016-11-13 A

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1109.1        1.2009e+07        1.1962e+07        1.2057e+07
2543.6        5.5300e+06        5.5229e+06        5.5371e+06
4429.4        3.5636e+06        3.5626e+06        3.5646e+06
4495.8        1.9892e+05        1.9849e+05        1.9934e+05
6755.9        2.7949e+06        2.7935e+06        2.7963e+06
6769.6        8.0386e+06        8.0366e+06        8.0406e+06
6833.0        2.0677e+06        2.0671e+06        2.0684e+06
9514.3        2.1571e+06        2.1525e+06        2.1617e+06
10205.2        2.2730e+06        2.2706e+06        2.2755e+06
10360.6        2.0024e+06        2.0012e+06        2.0036e+06
12695.7        1.2769e+06        1.2595e+06        1.2947e+06
14168.6        3.4389e+06        3.4347e+06        3.4430e+06
16085.8        7.6129e+06        7.5677e+06        7.6586e+06
16302.1        1.1512e+06        1.1403e+06        1.1623e+06
18632.1        3.4509e+05        3.4508e+05        3.4510e+05
18806.5        8.7268e+05        8.6962e+05        8.7575e+05
20223.4        6.1496e+05        6.1494e+05        6.1498e+05
21351.3        2.9288e+06        2.9173e+06        2.9403e+06
23559.0        3.1627e+06        3.1237e+06        3.2027e+06
23712.0        4.2045e+05        4.2045e+05        4.2046e+05
24212.1        1.2451e+06        1.2451e+06        1.2451e+06
24687.7        1.1293e+06        1.1293e+06        1.1293e+06
25352.0        3.2923e+06        3.2922e+06        3.2923e+06
27127.4        9.1114e+06        8.9219e+06        9.3091e+06
28854.0        3.0897e+06        3.0269e+06        3.1552e+06
28952.0        2.6625e+06        2.6624e+06        2.6625e+06
29052.0        7.2887e+06        7.0946e+06        7.4937e+06
29523.0        5.4690e+05        5.4689e+05        5.4691e+05
32122.0        1.8145e+06        1.8145e+06        1.8146e+06

2016-11-13 B

% Freq        Q                 Q (C.I. 95%)      Q (C.I. 95%)
1130.0        1.7017e+06        1.6756e+06        1.7287e+06
2543.6        5.1969e+06        5.1941e+06        5.1998e+06
4429.4        3.7969e+06        3.7957e+06        3.7980e+06
4495.8        2.0313e+05        2.0241e+05        2.0386e+05
6755.9        2.8919e+06        2.8893e+06        2.8945e+06
6769.6        8.0715e+06        8.0699e+06        8.0730e+06
6833.0        2.1233e+06        2.1227e+06        2.1239e+06
9514.4        2.2500e+06        2.2489e+06        2.2512e+06
10205.3        2.4315e+06        2.4298e+06        2.4332e+06
10360.6        2.2703e+06        2.2641e+06        2.2766e+06
12695.8        1.3177e+06        1.3105e+06        1.3250e+06
14168.6        1.5517e+06        1.5485e+06        1.5549e+06
16074.0        1.1441e+06        1.1441e+06        1.1442e+06
16085.8        7.5344e+06        7.5003e+06        7.5688e+06
16302.1        1.1328e+06        1.1262e+06        1.1394e+06
17549.4        7.2792e+05        7.2790e+05        7.2794e+05
18632.4        4.3522e+05        4.3520e+05        4.3523e+05
18806.6        9.4602e+05        9.4289e+05        9.4916e+05
20144.0        1.3355e+06        1.3355e+06        1.3356e+06
20280.5        2.6059e+05        2.6058e+05        2.6060e+05
21351.0        2.7260e+06        2.7259e+06        2.7261e+06
23559.0        4.1056e+06        3.9740e+06        4.2461e+06
23711.6        4.0080e+05        4.0079e+05        4.0081e+05
24212.0        1.1849e+06        1.1849e+06        1.1849e+06
24687.7        9.9194e+05        9.9192e+05        9.9196e+05
28854.3        3.1246e+06        3.1246e+06        3.1247e+06
28952.0        2.4117e+06        2.4116e+06        2.4117e+06
29052.3        6.6583e+06        6.6582e+06        6.6585e+06

 

  183   Sun Nov 13 19:12:56 2016 GabrieleGeneralMeasurementsS1600471

2016-11-13

Note: some scratches or contamination visible on the surface near the egde

  • 7:03pm, in chamber, balanced
  • 7:04pm, roughing pump on
  • 7:12pm turbo pump on
  • Excitations:
    • Quiet time before excitation: 1163133663
      Excitation (1100 Hz) at 1163133695 (60 s)
      Excitation (broad band) at 1163133757 (60 s)
      Quiet time after excitation: 1163133819
    • Quiet time before excitation: 1163144649
      Excitation (1100 Hz) at 1163144682 (60 s)
      Excitation (broad band) at 1163144744 (60 s)
      Quiet time after excitation: 1163144806
    • Quiet time before excitation: 1163155636
      Excitation (1100 Hz) at 1163155669 (60 s)
      Excitation (broad band) at 1163155731 (60 s)
      X3:CR1-ESD_GAIN => 0
      Quiet time after excitation: 1163155793

2016-11-14

  • 8:50am pumps off

Results

2016-11-13 A

% Freq        Q               Q (C.I. 95%)        Q (C.I. 95%)
1098.2        7.4598e+06        7.4472e+06        7.4724e+06
2196.1        8.9864e+06        8.5757e+06        9.4383e+06
2520.2        4.3443e+06        4.3400e+06        4.3486e+06
2558.1        6.0816e+05        6.0143e+05        6.1503e+05
4390.6        2.7832e+06        2.7819e+06        2.7844e+06
6698.1        2.4391e+06        2.4377e+06        2.4404e+06
6720.1        1.2186e+07        1.2174e+07        1.2198e+07
6771.3        1.2193e+06        1.2187e+06        1.2199e+06
6838.3        3.8835e+05        3.8533e+05        3.9143e+05
9434.8        2.0534e+06        2.0501e+06        2.0568e+06
10129.0        1.1046e+05        1.1046e+05        1.1047e+05
10275.4        7.3179e+05        7.2786e+05        7.3576e+05
12589.7        9.8392e+05        9.6718e+05        1.0012e+06
12709.8        3.4484e+05        3.4164e+05        3.4809e+05
14061.9        6.0359e+06        6.0310e+06        6.0408e+06
15955.7        1.8406e+06        1.8350e+06        1.8462e+06
15969.9        7.9895e+06        7.9796e+06        7.9995e+06
16167.0        1.1887e+06        1.1858e+06        1.1916e+06
17933.7        6.7847e+05        6.7845e+05        6.7849e+05
18348.0        1.1646e+06        1.1645e+06        1.1646e+06
18491.0        7.9603e+05        7.9601e+05        7.9605e+05
18658.5        9.0778e+04        9.0775e+04        9.0780e+04
20459.0        1.9219e+06        1.9218e+06        1.9219e+06
21191.2        3.1915e+06        3.1677e+06        3.2157e+06
23383.6        3.5399e+06        3.5198e+06        3.5602e+06
24489.7        9.6402e+05        9.5706e+05        9.7108e+05
24509.4        1.0474e+06        1.0474e+06        1.0474e+06
24553.5        1.4376e+06        1.4375e+06        1.4376e+06
26923.0        7.2079e+06        7.1783e+06        7.2378e+06
28653.0        2.5777e+06        2.5717e+06        2.5838e+06
28747.7        2.2403e+06        2.1968e+06        2.2855e+06
28842.1        1.1938e+07        1.1927e+07        1.1948e+07
29765.5        8.8519e+06        8.7781e+06        8.9269e+06
30712.0        1.6995e+06        1.6848e+06        1.7145e+06
31467.0        4.8235e+05        4.8235e+05        4.8236e+05
31489.0        1.1729e+06        1.1649e+06        1.1809e+06
32120.5        9.6230e+05        9.6229e+05        9.6232e+05

2016-11-13 B

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1098.1        5.4817e+06        5.4778e+06        5.4856e+06
2520.1        2.7906e+06        2.7896e+06        2.7916e+06
2558.1        6.0809e+05        6.0570e+05        6.1050e+05
4390.6        1.7952e+06        1.7949e+06        1.7955e+06
6698.1        1.4580e+06        1.4576e+06        1.4584e+06
6720.0        8.2579e+06        8.2563e+06        8.2595e+06
6771.4        9.1260e+05        9.1091e+05        9.1429e+05
6838.4        3.8042e+05        3.7936e+05        3.8148e+05
9434.7        1.2099e+06        1.2081e+06        1.2116e+06
10275.5        6.7566e+05        6.7360e+05        6.7773e+05
12589.7        6.8681e+05        6.8318e+05        6.9047e+05
12709.8        2.8213e+05        2.7783e+05        2.8657e+05
14061.9        3.7724e+06        3.7706e+06        3.7741e+06
15955.8        1.2708e+06        1.2636e+06        1.2780e+06
15969.9        5.9870e+06        5.9818e+06        5.9922e+06
16167.0        8.0447e+05        7.9517e+05        8.1399e+05
21191.3        2.7333e+06        2.7051e+06        2.7620e+06
22345.0        2.3568e+06        2.3567e+06        2.3568e+06
23383.5        2.1083e+06        2.1082e+06        2.1083e+06
24489.5        6.6570e+05        6.6569e+05        6.6571e+05
24509.5        7.9636e+05        7.9634e+05        7.9638e+05
24553.5        8.3880e+05        8.3878e+05        8.3881e+05
26922.9        4.6187e+06        4.6004e+06        4.6372e+06
28652.9        1.4483e+06        1.4347e+06        1.4622e+06
28747.6        1.2629e+06        1.2629e+06        1.2629e+06
28842.1        9.5317e+06        9.5238e+06        9.5396e+06
29766.0        6.6922e+06        6.5397e+06        6.8520e+06
30712.1        1.0888e+06        1.0888e+06        1.0888e+06
31489.0        6.8125e+05        6.8124e+05        6.8126e+05
32120.5        7.8667e+05        7.8666e+05        7.8668e+05

2016-11-13 C

% Freq        Q        Q (C.I. 95%)        Q (C.I. 95%)
1098.1        5.4335e+06        5.4304e+06        5.4365e+06
2196.2        6.0782e+06        5.6658e+06        6.5552e+06
2486.0        3.0319e+06        2.6660e+06        3.5141e+06
2515.7        2.7819e+06        2.7810e+06        2.7828e+06
2520.2        2.7871e+06        2.7863e+06        2.7879e+06
2558.0        5.8364e+05        5.7358e+05        5.9405e+05
2578.0        2.7145e+06        2.4935e+06        2.9785e+06
3584.0        2.9087e+06        2.6452e+06        3.2303e+06
4390.5        1.7822e+06        1.7818e+06        1.7825e+06
6698.1        1.4479e+06        1.4472e+06        1.4487e+06
6720.1        8.2604e+06        8.2559e+06        8.2648e+06
6771.3        9.1201e+05        9.1142e+05        9.1260e+05
6838.4        3.8280e+05        3.8172e+05        3.8389e+05
9434.8        1.1975e+06        1.1957e+06        1.1994e+06
10275.4        6.7234e+05        6.7108e+05        6.7360e+05
11358.4        5.5649e+04        5.5646e+04        5.5651e+04
12589.7        6.7443e+05        6.7079e+05        6.7812e+05
12710.0        2.9710e+05        2.8917e+05        3.0549e+05
14061.8        3.7379e+06        3.7343e+06        3.7415e+06
15955.7        1.2690e+06        1.2679e+06        1.2700e+06
15969.9        5.9884e+06        5.9823e+06        5.9945e+06
16167.1        7.7811e+05        7.7118e+05        7.8516e+05
17934.1        4.9574e+05        4.9572e+05        4.9575e+05
18348.0        9.0824e+05        9.0822e+05        9.0827e+05
18491.0        7.8942e+05        7.8940e+05        7.8944e+05
18658.1        8.8711e+04        8.8709e+04        8.8714e+04
21191.1        2.3393e+06        2.3179e+06        2.3612e+06
22345.0        2.2103e+06        2.2103e+06        2.2104e+06
23383.5        2.1953e+06        2.1740e+06        2.2171e+06
24489.6        6.4955e+05        6.4954e+05        6.4956e+05
24553.5        8.6897e+05        8.6896e+05        8.6899e+05
26922.9        4.7003e+06        4.6832e+06        4.7176e+06
28652.9        1.4372e+06        1.4312e+06        1.4433e+06
28747.6        1.2544e+06        1.2440e+06        1.2650e+06
28842.0        9.5549e+06        9.5483e+06        9.5616e+06
29766.0        6.9324e+06        6.7433e+06        7.1325e+06
30712.1        1.1017e+06        1.0911e+06        1.1126e+06
32121.0        8.1697e+05        8.1696e+05        8.1698e+05

 

 

 

Attachment 3: ringdowns.png
ringdowns.png
  184   Mon Nov 14 08:54:49 2016 Alena, CalumGeneralGeneralAnnealing run

Annealing run (472-477) on 3" wafers - Crime 11/11/2016 https://dcc.ligo.org/T1600527

  185   Mon Nov 14 11:13:33 2016 GabrieleGeneralMeasurementsS1600467

2016-11-14

Note: marked as "bad edge" by Alena

  • 11:00 in chamber, balanced
  • 11:01 roughing pump on
  • 11:13 turbo pump on
  • 12:28 excitation (2kV, 60s), quiet time before 1163190441, quiet time after 1163190685
  • 1:54pm, pumps off

Results

2016-11-14

% Freq        Q               Q (C.I. 95%)        Q (C.I. 95%)
1102.7        6.3619e+06        6.3431e+06        6.3807e+06
1122.2        1.8673e+06        1.8623e+06        1.8722e+06
2530.3        3.7678e+06        3.7639e+06        3.7717e+06
2569.2        1.4261e+06        1.4195e+06        1.4327e+06
4407.7        2.7665e+06        2.7429e+06        2.7904e+06
4470.7        2.6197e+05        2.6166e+05        2.6228e+05
6723.0        1.7620e+06        1.7567e+06        1.7674e+06
6734.0        6.9851e+06        6.9809e+06        6.9893e+06
6794.4        1.8494e+06        1.8476e+06        1.8513e+06
9470.5        6.0578e+04        6.0574e+04        6.0581e+04
10152.1        3.8492e+06        3.8370e+06        3.8615e+06
10301.4        4.0275e+05        4.0075e+05        4.0478e+05
12638.1        7.3205e+05        7.2391e+05        7.4036e+05
12756.2        7.5936e+05        7.5933e+05        7.5939e+05
14096.2        5.9662e+06        5.9355e+06        5.9971e+06
16001.5        1.7340e+06        1.7104e+06        1.7582e+06
16227.1        1.2612e+06        1.2585e+06        1.2639e+06
20142.2        5.4880e+05        5.4878e+05        5.4881e+05
20191.9        5.5732e+05        5.5731e+05        5.5734e+05
21236.3        2.6162e+06        2.6086e+06        2.6238e+06
22255.0        1.5152e+06        1.5152e+06        1.5152e+06
23445.0        1.0949e+06        1.0824e+06        1.1077e+06
24391.4        7.4968e+05        7.4967e+05        7.4970e+05
24545.8        1.8061e+05        1.8060e+05        1.8061e+05
24580.0        7.5466e+05        7.5465e+05        7.5468e+05
25561.4        1.2230e+06        1.2230e+06        1.2230e+06
26982.5        3.8512e+06        3.8511e+06        3.8512e+06
28730.1        1.6735e+06        1.6617e+06        1.6855e+06
28824.0        9.7775e+05        9.7774e+05        9.7777e+05
28896.2        4.3667e+06        4.3190e+06        4.4154e+06
31387.2        5.9592e+05        5.9592e+05        5.9593e+05
32301.5        6.3985e+05        6.3984e+05        6.3986e+05

 

  186   Mon Nov 14 11:28:33 2016 GabrieleGeneralVacuumViton pads

I added three 1"x1" viton pads below the base plate, and realigned the entire optical system to the horizontal reference

The pads seem to reduce a bit the vibrations in the QPD_X direction, but significantly improve the situation in the QPD_Y direction, see below:

 

  187   Mon Nov 14 14:41:08 2016 GabrieleGeneralMeasurementsS1600474

2016-11-14

  • 2:40pm, in chamber, balanced
  • 2:41pm, roughing pump on
  • 2:50pm, turbo pump on
  • 4:12pm, excitation (2kV, 60s), quiet time before 1163203908, quiet time after 1163204078
  • More excitations:

    • Quiet time before excitation: 1163213574
      Excitation (1100 Hz) at 1163213607 (60 s)
      Excitation (broad band) at 1163213668 (60 s)
      Quiet time after excitation: 1163213730

    • Quiet time before excitation: 1163224560
      Excitation (1100 Hz) at 1163224592 (60 s)
      Excitation (broad band) at 1163224654 (60 s)
      Quiet time after excitation: 1163224716

    • Quiet time before excitation: 1163235546
      Excitation (1100 Hz) at 1163235578 (60 s)
      Excitation (broad band) at 1163235640 (60 s)
      Quiet time after excitation: 1163235702

2016-11-15

  • 8:49am pumps off

Results

2016-11-14 A

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1107.7        4.6075e+06        4.6037e+06        4.6113e+06
2540.0        5.4810e+06        5.4785e+06        5.4836e+06
4490.2        2.5331e+05        2.5304e+05        2.5359e+05
6743.0        3.3684e+06        3.3662e+06        3.3707e+06
6746.9        3.3685e+06        3.3665e+06        3.3706e+06
6757.6        7.1350e+06        7.1255e+06        7.1445e+06
6772.0        5.8021e+06        5.4002e+06        6.2684e+06
6824.1        2.4899e+06        2.4871e+06        2.4928e+06
9501.9        5.4497e+06        5.4322e+06        5.4674e+06
10187.8        6.4223e+06        6.4184e+06        6.4262e+06
10343.0        2.3547e+06        2.3256e+06        2.3845e+06
12679.1        3.9818e+06        3.9685e+06        3.9952e+06
12806.0        3.2209e+05        3.1252e+05        3.3227e+05
14145.0        4.1585e+06        4.1033e+06        4.2152e+06
16050.7        2.2872e+06        2.2699e+06        2.3047e+06
16058.8        6.6646e+06        6.6544e+06        6.6748e+06
16281.1        2.3068e+06        2.2741e+06        2.3405e+06
18601.1        5.3760e+06        5.3475e+06        5.4049e+06
18776.0        5.7876e+05        5.7874e+05        5.7877e+05
21315.5        8.6998e+06        8.5404e+06        8.8652e+06
23520.3        3.4527e+06        3.4258e+06        3.4799e+06
24658.2        1.3013e+06        1.3012e+06        1.3013e+06
28810.3        6.4869e+06        6.4174e+06        6.5579e+06
28909.1        4.2011e+06        4.1313e+06        4.2734e+06
29001.9        8.7561e+06        8.7012e+06        8.8118e+06
29526.3        2.1542e+06        2.1311e+06        2.1777e+06
29563.5        5.9460e+06        5.8940e+06        5.9989e+06
30463.0        2.0306e+06        2.0306e+06        2.0307e+06
31307.8        2.0177e+06        2.0176e+06        2.0177e+06
31915.5        2.4119e+06        2.4118e+06        2.4119e+06
32178.4        6.3761e+06        6.2763e+06        6.4791e+06

 

2015-11-14 B

% Freq        Q                 Q (C.I. 95%)        Q (C.I. 95%)
1107.5        3.2516e+06        3.2494e+06        3.2538e+06
2539.9        4.5383e+06        4.5368e+06        4.5397e+06
4423.0        2.2248e+06        2.2238e+06        2.2257e+06
4490.2        2.6724e+05        2.6695e+05        2.6754e+05
6688.5        3.5492e+06        3.4597e+06        3.6434e+06
6746.8        3.5335e+06        3.5324e+06        3.5345e+06
6757.6        7.5849e+06        7.5835e+06        7.5864e+06
6824.1        2.4839e+06        2.4824e+06        2.4853e+06
9501.8        4.6405e+06        4.6330e+06        4.6480e+06
10187.7        6.1494e+06        6.1467e+06        6.1520e+06
10342.9        2.5426e+06        2.5181e+06        2.5676e+06
12679.0        3.3433e+06        3.3374e+06        3.3492e+06
14144.6        3.9980e+06        3.8729e+06        4.1316e+06
16050.5        1.9010e+06        1.8941e+06        1.9081e+06
16058.6        6.4936e+06        6.4881e+06        6.4991e+06
16281.1        2.7856e+06        2.7785e+06        2.7928e+06
18215.4        2.2829e+06        2.2828e+06        2.2829e+06
18600.9        7.3657e+06        7.3568e+06        7.3746e+06
18775.6        5.8072e+05        5.8070e+05        5.8073e+05
23520.1        1.7679e+06        1.7538e+06        1.7822e+06
24658.4        8.3031e+05        8.3030e+05        8.3033e+05
27082.0        6.7421e+06        6.5672e+06        6.9266e+06
28810.1        6.1339e+06        6.1000e+06        6.1682e+06
28909.0        4.3651e+06        4.3651e+06        4.3652e+06
29001.7        9.2108e+06        9.1518e+06        9.2705e+06
29526.1        2.0948e+06        2.0765e+06        2.1133e+06
30463.0        1.5875e+06        1.5875e+06        1.5876e+06
31308.0        1.9777e+06        1.9777e+06        1.9778e+06
31915.8        2.5156e+06        2.5156e+06        2.5157e+06

2015-11-14 C

% Freq        Q               Q (C.I. 95%)        Q (C.I. 95%)
1107.9        2.6382e+06        2.6360e+06        2.6404e+06
2539.9        4.3446e+06        4.3432e+06        4.3461e+06
4423.0        2.1544e+06        2.1534e+06        2.1553e+06
4490.2        2.7485e+05        2.7471e+05        2.7499e+05
6746.8        3.2717e+06        3.2705e+06        3.2728e+06
6757.6        6.3809e+06        6.3797e+06        6.3821e+06
6824.1        2.3227e+06        2.3215e+06        2.3238e+06
9501.8        4.6211e+06        4.6073e+06        4.6351e+06
10187.7        6.5099e+06        6.5090e+06        6.5109e+06
10342.9        2.6098e+06        2.5853e+06        2.6347e+06
12679.1        3.2362e+06        3.2276e+06        3.2449e+06
14144.6        4.1799e+06        4.1049e+06        4.2577e+06
16050.5        2.8054e+06        2.8002e+06        2.8106e+06
16058.6        8.1729e+06        8.1564e+06        8.1895e+06
16281.0        3.2400e+06        3.2399e+06        3.2401e+06
18600.9        7.8239e+06        7.7914e+06        7.8565e+06
18775.7        5.9520e+05        5.9518e+05        5.9522e+05
20255.0        1.0929e+06        1.0929e+06        1.0929e+06
21315.4        8.0568e+06        7.9081e+06        8.2112e+06
23520.0        7.7176e+05        7.7174e+05        7.7178e+05
24658.0        6.0199e+05        6.0197e+05        6.0200e+05
28810.0        6.1531e+06        6.0894e+06        6.2180e+06
29001.6        9.2904e+06        9.2285e+06        9.3531e+06
29526.1        2.0902e+06        2.0700e+06        2.1108e+06
31308.0        1.8177e+06        1.8177e+06        1.8177e+06
31916.0        2.4457e+06        2.4457e+06        2.4458e+06
32179.0        6.2208e+06        6.2207e+06        6.2209e+06

2016-11-14 D

% Freq        Q               Q (C.I. 95%)        Q (C.I. 95%)
1107.8        2.5483e+06        2.5470e+06        2.5497e+06
2539.9        4.1479e+06        4.1464e+06        4.1493e+06
4423.0        2.1043e+06        2.1036e+06        2.1050e+06
4490.2        2.8179e+05        2.8161e+05        2.8196e+05
6746.7        3.1144e+06        3.1133e+06        3.1155e+06
6757.5        5.8249e+06        5.8241e+06        5.8257e+06
6761.4        5.8283e+06        5.8275e+06        5.8292e+06
6824.0        2.2641e+06        2.2633e+06        2.2649e+06
9501.8        4.6535e+06        4.6342e+06        4.6730e+06
10187.7        7.0149e+06        7.0125e+06        7.0173e+06
10342.8        2.6508e+06        2.6469e+06        2.6548e+06
12679.0        3.2619e+06        3.2587e+06        3.2650e+06
14144.6        3.7736e+06        3.7205e+06        3.8281e+06
16050.4        2.7995e+06        2.7862e+06        2.8129e+06
16058.5        8.0705e+06        8.0662e+06        8.0747e+06
16280.9        3.3065e+06        3.3007e+06        3.3123e+06
18600.8        7.9582e+06        7.9432e+06        7.9733e+06
18775.6        5.8072e+05        5.7705e+05        5.8443e+05
20254.7        1.2456e+06        1.2295e+06        1.2622e+06
21315.0        8.2763e+06        8.0802e+06        8.4823e+06
23519.9        1.4508e+06        1.4356e+06        1.4663e+06
28810.0        6.1795e+06        6.0919e+06        6.2696e+06
29001.4        9.6787e+06        9.6439e+06        9.7138e+06
29525.7        2.0513e+06        2.0512e+06        2.0513e+06
29564.2        4.8725e+06        4.8325e+06        4.9133e+06
31308.0        1.8091e+06        1.8090e+06        1.8091e+06

 

 

 

Attachment 3: ringdowns.png
ringdowns.png
  188   Tue Nov 15 10:08:28 2016 GabrieleGeneralMeasurementsS1600475

2016-11-15

  • 10:01am in chamber, balanced
  • 10:03am, roughing pump on
  • 10:21am turbo pump on
  • 11:57am, excitation (3kV, 60s), quiet time before 1163275060, quiet time after 1163275168
  • 2:21pm, excitation (3kV, 60s), quiet time before 1163283684, quiet time after 1163283793
  • 3:27pm, pumps off

Results

2016-11-15 A

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1111.4        7.0708e+06        7.0599e+06        7.0816e+06
2548.7        1.5867e+06        1.5859e+06        1.5876e+06
4438.1        2.7798e+06        2.7786e+06        2.7810e+06
4502.1        3.2580e+05        3.2004e+05        3.3178e+05
6768.6        2.4624e+06        2.4597e+06        2.4652e+06
6780.9        7.9199e+06        7.9148e+06        7.9250e+06
6841.2        1.7197e+06        1.7187e+06        1.7206e+06
9532.6        2.0042e+06        2.0003e+06        2.0082e+06
10221.8        8.7455e+06        8.7384e+06        8.7526e+06
10370.9        4.7482e+05        4.7142e+05        4.7827e+05
12719.2        1.6940e+06        1.6924e+06        1.6956e+06
12840.1        5.4075e+05        5.3459e+05        5.4704e+05
14190.7        6.7551e+06        6.7451e+06        6.7651e+06
16112.3        7.9161e+06        7.8847e+06        7.9478e+06
18660.2        4.6512e+06        4.6392e+06        4.6633e+06
20318.5        1.2487e+06        1.2411e+06        1.2563e+06
21381.3        8.8036e+06        8.7663e+06        8.8412e+06
23749.2        4.6262e+05        4.6261e+05        4.6263e+05
24133.5        1.1367e+06        1.1367e+06        1.1367e+06
24174.5        1.1856e+06        1.1856e+06        1.1857e+06
24732.5        1.0615e+06        1.0615e+06        1.0615e+06
25308.0        2.8236e+06        2.8235e+06        2.8237e+06
27162.8        4.9157e+06        4.9061e+06        4.9254e+06
29011.1        1.7786e+06        1.7786e+06        1.7787e+06
29094.1        1.0590e+07        1.0533e+07        1.0647e+07
31820.6        1.1840e+06        1.1840e+06        1.1840e+06
32083.0        2.9047e+06        2.9047e+06        2.9048e+06

 

2016-11-15 B

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1111.4        5.3019e+06        5.2950e+06        5.3088e+06
2548.7        1.5590e+06        1.5539e+06        1.5642e+06
4438.1        1.8590e+06        1.8580e+06        1.8601e+06
4502.1        2.9799e+05        2.9699e+05        2.9901e+05
6768.6        1.5724e+06        1.5702e+06        1.5747e+06
6781.1        5.7773e+06        5.7746e+06        5.7800e+06
6841.3        1.2422e+06        1.2411e+06        1.2432e+06
9532.6        1.2514e+06        1.2433e+06        1.2597e+06
10221.8        5.6805e+06        5.6618e+06        5.6993e+06
10371.1        4.5285e+05        4.4967e+05        4.5607e+05
12719.3        1.0666e+06        1.0651e+06        1.0682e+06
12840.0        5.0460e+05        4.9209e+05        5.1776e+05
14190.7        4.2119e+06        4.1999e+06        4.2240e+06
16111.0        5.1330e+06        5.0960e+06        5.1705e+06
18089.0        9.7188e+05        9.7185e+05        9.7190e+05
18660.4        2.9670e+06        2.9374e+06        2.9973e+06
20318.7        8.0187e+05        7.9553e+05        8.0832e+05
21381.4        6.4885e+06        6.4474e+06        6.5302e+06
24133.0        8.2483e+05        8.2481e+05        8.2485e+05
24174.4        8.3029e+05        8.3027e+05        8.3030e+05
27163.0        3.6182e+06        3.6009e+06        3.6356e+06
28916.0        1.3350e+06        1.3349e+06        1.3350e+06
29094.3        8.9762e+06        8.9139e+06        9.0394e+06
29562.6        3.7546e+05        3.7545e+05        3.7547e+05
31820.5        1.0901e+06        1.0901e+06        1.0901e+06

 

 

  189   Tue Nov 15 10:35:11 2016 GabrieleMechanicsDaily ProgressParts for laser polishing setup are here

The parts all fit as expected. They're mounted on the stages.

  190   Tue Nov 15 16:46:48 2016 GabrieleGeneralMeasurementsS1600476

2016-11-15

  • 4:45pm in chamber, balanced
  • 4:46pm, roughing pump on
  • 4:56pm, turbo pump on
  • Excitations:

    • Quiet time before excitation: 1163303050
      Excitation (1100 Hz) at 1163303082 (60 s)
      1kHz excitation finished
      Excitation (broad band) at 1163303144 (60 s)
      Quiet time after excitation: 1163303206

    • Quiet time before excitation: 1163314036
      Excitation (1100 Hz) at 1163314068 (60 s)
      Excitation (broad band) at 1163314130 (60 s)
      Quiet time after excitation: 1163314192

    • Quiet time before excitation: 1163325022
      Excitation (1100 Hz) at 1163325054 (60 s)
      1kHz excitation finished
      Excitation (broad band) at 1163325116 (60 s)
      Quiet time after excitation: 1163325178

2016-11-16

  • 8:25am pumps off

Results

2016-11-15 A

% Freq        Q               Q (C.I. 95%)        Q (C.I. 95%)
1121.1        5.0944e+06        5.0905e+06        5.0982e+06
1140.0        1.1654e+06        1.1635e+06        1.1673e+06
2570.2        2.6712e+06        2.6699e+06        2.6724e+06
2608.7        9.7800e+05        9.7302e+05        9.8303e+05
4474.9        1.8629e+06        1.8624e+06        1.8634e+06
4538.1        3.2875e+05        3.2846e+05        3.2905e+05
6824.1        1.4823e+06        1.4812e+06        1.4834e+06
6840.2        7.3018e+06        7.2982e+06        7.3055e+06
6893.2        9.2821e+05        9.2713e+05        9.2929e+05
6962.9        4.9646e+04        4.9643e+04        4.9650e+04
9608.9        9.1232e+05        9.1133e+05        9.1332e+05
10308.9        5.1598e+06        5.0344e+06        5.2915e+06
10457.7        4.6941e+05        4.6647e+05        4.7239e+05
12819.2        1.0332e+06        1.0323e+06        1.0342e+06
12939.5        4.1373e+05        4.0825e+05        4.1935e+05
14310.4        3.0088e+06        3.0015e+06        3.0161e+06
16241.1        1.4065e+06        1.3908e+06        1.4227e+06
16251.8        5.8974e+06        5.8741e+06        5.9209e+06
16456.0        5.1136e+05        5.0798e+05        5.1478e+05
18816.0        2.8314e+06        2.7798e+06        2.8850e+06
18986.6        6.7793e+05        6.7791e+05        6.7795e+05
20432.7        1.5260e+05        1.5259e+05        1.5260e+05
20473.7        4.7475e+05        4.7474e+05        4.7476e+05
21560.7        5.5350e+06        5.4921e+06        5.5786e+06
24918.6        7.4993e+05        7.4992e+05        7.4995e+05
29247.5        9.5138e+05        9.5137e+05        9.5140e+05
29340.0        1.1583e+07        1.1439e+07        1.1730e+07
29822.7        8.1204e+05        8.1202e+05        8.1205e+05

2016-11-15 B

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1121.1        4.6065e+06        4.6038e+06        4.6091e+06
1140.0        8.0197e+05        8.0001e+05        8.0393e+05
2570.2        2.3051e+06        2.3035e+06        2.3067e+06
2608.7        9.1341e+05        9.1205e+05        9.1477e+05
4017.5        2.8194e+04        2.8190e+04        2.8197e+04
4475.0        1.6430e+06        1.6421e+06        1.6440e+06
4538.1        3.2912e+05        3.2849e+05        3.2976e+05
6824.1        1.2995e+06        1.2986e+06        1.3005e+06
6840.2        6.5726e+06        6.5697e+06        6.5756e+06
6893.2        8.6042e+05        8.5868e+05        8.6217e+05
6963.0        5.0409e+04        5.0405e+04        5.0412e+04
9609.0        1.0692e+06        1.0604e+06        1.0782e+06
10309.0        5.1393e+06        4.9409e+06        5.3542e+06
10457.7        4.6470e+05        4.4160e+05        4.9034e+05
12819.3        9.0580e+05        9.0410e+05        9.0750e+05
12939.6        4.0804e+05        3.9544e+05        4.2148e+05
14310.5        2.6132e+06        2.6107e+06        2.6158e+06
16241.2        1.2941e+06        1.2868e+06        1.3015e+06
16251.9        5.9674e+06        5.9536e+06        5.9812e+06
16456.2        7.3080e+05        7.2814e+05        7.3347e+05
18816.1        2.5342e+06        2.5282e+06        2.5402e+06
18987.0        6.3654e+05        6.3652e+05        6.3656e+05
21560.9        5.2433e+06        5.1712e+06        5.3174e+06
21610.4        2.3102e+06        2.3102e+06        2.3103e+06
24918.9        6.6504e+05        6.5864e+05        6.7156e+05
27388.0        4.7256e+06        4.6897e+06        4.7619e+06
29153.6        1.2791e+06        1.2790e+06        1.2791e+06
29248.0        8.4919e+05        8.4918e+05        8.4921e+05
29340.0        1.0910e+07        1.0363e+07        1.1519e+07
31810.6        3.0968e+06        3.0967e+06        3.0968e+06

2016-11-15 C

% Freq        Q               Q (C.I. 95%)        Q (C.I. 95%)
1121.0        4.5968e+06        4.5942e+06        4.5994e+06
1140.0        8.9250e+05        8.9149e+05        8.9352e+05
2570.2        2.2831e+06        2.2817e+06        2.2845e+06
2608.7        8.9996e+05        8.9803e+05        9.0190e+05
4474.9        1.5002e+06        1.4983e+06        1.5021e+06
4538.1        3.2279e+05        3.2220e+05        3.2338e+05
6824.2        1.2882e+06        1.2858e+06        1.2906e+06
6840.3        6.5213e+06        6.5146e+06        6.5281e+06
6893.2        8.6464e+05        8.6311e+05        8.6617e+05
9608.9        1.0570e+06        1.0416e+06        1.0728e+06
10309.0        5.0851e+06        4.9675e+06        5.2084e+06
10457.8        4.5509e+05        4.4305e+05        4.6780e+05
12819.4        9.0619e+05        9.0128e+05        9.1116e+05
12940.0        4.2538e+05        4.2537e+05        4.2540e+05
14310.5        2.5765e+06        2.5717e+06        2.5814e+06
16241.2        1.2956e+06        1.2883e+06        1.3030e+06
16251.8        6.0038e+06        5.9865e+06        6.0211e+06
16456.3        7.4603e+05        7.4232e+05        7.4978e+05
18816.0        2.4942e+06        2.4808e+06        2.5077e+06
18987.0        6.4961e+05        6.4960e+05        6.4963e+05
20432.7        1.4994e+05        1.4993e+05        1.4994e+05
20474.1        4.3164e+05        4.3163e+05        4.3165e+05
21560.8        5.2562e+06        5.1891e+06        5.3251e+06
23792.3        1.9386e+06        1.9386e+06        1.9386e+06
24918.9        6.6629e+05        6.6628e+05        6.6631e+05
27387.9        4.7143e+06        4.6193e+06        4.8134e+06
29149.0        5.6268e+06        5.6267e+06        5.6269e+06
29248.0        8.5279e+05        8.5277e+05        8.5280e+05
29340.2        1.0748e+07        1.0565e+07        1.0937e+07
31811.0        3.0852e+06        3.0852e+06        3.0853e+06

 

 

 

 

Attachment 3: ringdowns.png
ringdowns.png
Attachment 8: ringdowns.png
ringdowns.png
  191   Wed Nov 16 09:35:59 2016 GabrieleGeneralMeasurementsS1600477

2016-11-16

  • 9:34am in chamber, balanced
  • 9:35am, roughing pump on
  • 9:46am, turbo pump on
  • Excitations:
    • Quiet time before excitation: 1163360707
      Excitation (1100 Hz) at 1163360739 (60 s)
      Excitation (broad band) at 1163360801 (60 s)
      Quiet time after excitation: 1163360863

    • Quiet time before excitation: 1163368093
      Excitation (1100 Hz) at 1163368125 (60 s)
      Excitation (broad band) at 1163368187 (60 s)
      Quiet time after excitation: 1163368249

  • 3:31pm, pumps off

 

​​Results

2016-11-16 A

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1114.2        2.3007e+07        2.2987e+07        2.3027e+07
1133.4        2.2807e+06        2.2763e+06        2.2851e+06
2556.5        8.4325e+06        8.2252e+06        8.6504e+06
4452.8        8.8612e+06        8.8539e+06        8.8684e+06
4516.8        2.6142e+05        2.6001e+05        2.6284e+05
6792.4        6.6102e+06        6.6082e+06        6.6123e+06
6819.1        1.1027e+07        1.1024e+07        1.1031e+07
6864.1        1.9002e+06        1.8925e+06        1.9080e+06
9565.8        4.6820e+06        4.6648e+06        4.6993e+06
10275.1        1.5716e+07        1.5709e+07        1.5723e+07
12763.8        4.3417e+06        4.3388e+06        4.3447e+06
12886.1        6.6216e+05        6.5444e+05        6.7006e+05
14262.2        1.2383e+07        1.2361e+07        1.2405e+07
16179.4        5.6376e+06        5.6260e+06        5.6492e+06
16200.8        1.4003e+07        1.3963e+07        1.4043e+07
16388.5        4.0876e+06        4.0841e+06        4.0911e+06
17292.4        2.4283e+06        2.3986e+06        2.4587e+06
18752.8        1.3368e+07        1.3331e+07        1.3405e+07
18921.3        1.1843e+06        1.1815e+06        1.1871e+06
23710.2        1.1569e+07        1.1554e+07        1.1584e+07
23997.7        1.1157e+06        1.1157e+06        1.1158e+06
24816.8        2.5474e+06        2.5335e+06        2.5615e+06
25111.0        7.5175e+06        7.2921e+06        7.7572e+06
27302.7        1.4825e+07        1.4792e+07        1.4858e+07
29047.5        7.2879e+06        7.2272e+06        7.3495e+06
29140.0        4.9904e+06        4.9903e+06        4.9904e+06
29261.0        5.6779e+06        5.6778e+06        5.6779e+06
29673.0        4.5825e+05        4.5824e+05        4.5825e+05
29707.5        3.0382e+06        3.0381e+06        3.0382e+06
31013.6        8.4799e+05        8.4798e+05        8.4800e+05
31038.5        2.4742e+06        2.4742e+06        2.4742e+06
31914.0        6.6181e+06        6.4402e+06        6.8060e+06

 

2016-11-16 B

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1114.0        2.2032e+07        2.2016e+07        2.2049e+07
1133.4        1.9600e+06        1.9526e+06        1.9676e+06
2556.4        8.2944e+06        8.2588e+06        8.3304e+06
4452.9        8.1942e+06        8.1921e+06        8.1962e+06
4516.9        2.7235e+05        2.6914e+05        2.7564e+05
6792.4        6.0530e+06        6.0514e+06        6.0545e+06
6819.2        1.0600e+07        1.0597e+07        1.0602e+07
6864.1        1.8208e+06        1.8175e+06        1.8241e+06
9565.9        4.2971e+06        4.2755e+06        4.3189e+06
10275.1        1.4597e+07        1.4574e+07        1.4621e+07
12763.8        3.9316e+06        3.9287e+06        3.9344e+06
12886.2        6.4555e+05        6.3907e+05        6.5217e+05
14262.3        1.1328e+07        1.1324e+07        1.1331e+07
16179.5        5.2117e+06        5.1197e+06        5.3072e+06
16201.0        1.3620e+07        1.3572e+07        1.3668e+07
16388.6        3.7046e+06        3.6996e+06        3.7097e+06
17292.3        2.2071e+06        2.2070e+06        2.2072e+06
18921.6        1.2022e+06        1.1964e+06        1.2080e+06
21494.3        8.4330e+06        8.4082e+06        8.4580e+06
23710.4        1.0625e+07        1.0605e+07        1.0645e+07
23997.5        1.0698e+06        1.0697e+06        1.0698e+06
24817.0        2.3920e+06        2.3880e+06        2.3961e+06
25111.0        7.3811e+06        7.1248e+06        7.6564e+06
27302.9        1.3847e+07        1.3819e+07        1.3874e+07
29047.9        6.7327e+06        6.6911e+06        6.7749e+06
29673.0        4.4653e+05        4.4652e+05        4.4654e+05
29707.5        2.7395e+06        2.7224e+06        2.7569e+06

 

 

 

 

 

  192   Wed Nov 16 09:43:25 2016 Gabriele, AlastairGeneralDaily ProgressCO2 laser polishing setup

Yesterday we assembled the lase polishing system. The Co2 laser power can be controlled using a waveplate, so we can turn on the laser at maximum power and let it stabilize, before actually turning up the power sent to the disk.

The beam is focused with a 10" focal length lens, and sent to the disk edge, poiting slightly upward to avoid hitting any other part of the disk.

The disk is moved with a combination of a linear and rotation stage, controlled with a MATLAB script. We tuned the translation and rotation speed so that the edge always moves at about 0.5 mm/s. Some refinement of the movimentation procedure will follow.

We tried the setup with one of the damaged samples, and the results are quite good.

More work this afternoon

Attachment 2: 2016-11-15_16.35.14.jpg
2016-11-15_16.35.14.jpg
  193   Wed Nov 16 15:57:21 2016 GabrieleGeneralMeasurementsS1600481

2016-11-16

  • 3:56pm, in chamber, balanced
  • 3:57pm, roughing pump on
  • 4:07pm, turbo pump on
  • Excitations:
    • Quiet time before excitation: 1163383462
      Excitation (1100 Hz) at 1163383494 (60 s)
      Excitation (broad band) at 1163383556 (60 s)
      Quiet time after excitation: 1163383618

    • Quiet time before excitation: 1163394448
      Excitation (1100 Hz) at 1163394480 (60 s)
      Excitation (broad band) at 1163394542 (60 s)
      Quiet time after excitation: 1163394604

    • Quiet time before excitation: 1163405434
      xcitation (1100 Hz) at 1163405466 (60 s)
      Excitation (broad band) at 1163405528 (60 s)
      Quiet time after excitation: 1163405590

2016-11-17

  • 8:46am, pumps off

Results

2016-11-16 A

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1094.3        1.2707e+07        1.2695e+07        1.2720e+07
2510.4        6.6163e+06        6.5897e+06        6.6431e+06
2548.6        1.1938e+05        1.1913e+05        1.1964e+05
4373.1        4.5232e+06        4.5188e+06        4.5275e+06
4435.8        2.3382e+05        2.3366e+05        2.3398e+05
6671.1        3.5757e+06        3.5748e+06        3.5767e+06
6697.5        1.8817e+07        1.8807e+07        1.8827e+07
6744.3        2.8118e+06        2.7759e+06        2.8485e+06
9395.6        2.2865e+06        2.2775e+06        2.2955e+06
10093.3        1.1448e+06        1.1445e+06        1.1452e+06
10240.0        2.0555e+06        2.0452e+06        2.0660e+06
11475.6        8.4917e+04        8.4913e+04        8.4921e+04
12537.1        2.2927e+06        2.2865e+06        2.2989e+06
15891.2        2.2520e+06        2.2469e+06        2.2572e+06
15914.6        7.8120e+06        7.8077e+06        7.8163e+06
16099.4        1.7394e+06        1.7372e+06        1.7415e+06
18426.5        8.3448e+05        8.2560e+05        8.4355e+05
21118.1        7.2440e+06        7.2347e+06        7.2532e+06
24381.7        1.0371e+06        1.0342e+06        1.0400e+06
24699.4        2.2364e+06        2.2168e+06        2.2563e+06
25794.0        5.1477e+06        5.0369e+06        5.2635e+06
26149.5        1.0102e+06        1.0102e+06        1.0102e+06
26830.0        1.0373e+07        1.0152e+07        1.0604e+07
28636.6        3.6000e+06        3.5828e+06        3.6174e+06
28745.9        1.7322e+07        1.7311e+07        1.7334e+07
29887.3        1.1030e+07        1.0956e+07        1.1105e+07
30842.6        2.4718e+06        2.4380e+06        2.5066e+06
31616.4        7.0754e+05        7.0753e+05        7.0755e+05
31640.4        1.9543e+06        1.9543e+06        1.9544e+06
32236.4        2.9076e+06        2.8843e+06        2.9313e+06

2016-11-16 B

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1094.0        1.1214e+07        1.1205e+07        1.1222e+07
2510.4        5.5745e+06        5.5710e+06        5.5780e+06
2548.5        1.3663e+05        1.3573e+05        1.3755e+05
4373.0        3.7426e+06        3.7368e+06        3.7484e+06
4435.8        2.3376e+05        2.3329e+05        2.3423e+05
6671.1        2.9264e+06        2.9246e+06        2.9282e+06
6697.5        1.6992e+07        1.6933e+07        1.7052e+07
6744.2        2.3626e+06        2.3012e+06        2.4273e+06
9395.5        2.0654e+06        2.0480e+06        2.0831e+06
10093.2        1.0860e+06        1.0850e+06        1.0870e+06
10239.9        2.0757e+06        2.0666e+06        2.0849e+06
11475.6        8.7886e+04        8.7883e+04        8.7890e+04
12537.0        1.8327e+06        1.8228e+06        1.8426e+06
14012.0        5.2022e+06        5.1550e+06        5.2502e+06
15891.1        2.1796e+06        2.1738e+06        2.1855e+06
15914.4        9.3495e+06        9.3457e+06        9.3534e+06
16099.4        1.6351e+06        1.6122e+06        1.6588e+06
21118.0        7.0081e+06        6.9894e+06        7.0268e+06
24381.5        9.2600e+05        9.1906e+05        9.3305e+05
24700.0        2.0943e+06        2.0943e+06        2.0943e+06
26830.0        9.4362e+06        9.3340e+06        9.5407e+06
28544.3        3.8658e+06        3.8010e+06        3.9328e+06
28636.3        3.0021e+06        2.9410e+06        3.0657e+06
28745.5        1.6500e+07        1.6430e+07        1.6571e+07
29887.7        1.0548e+07        1.0517e+07        1.0579e+07
30843.0        2.1072e+06        2.0887e+06        2.1260e+06
31616.6        6.3649e+05        6.3647e+05        6.3650e+05
31640.6        1.5725e+06        1.5725e+06        1.5726e+06
32236.5        2.8396e+06        2.8396e+06        2.8397e+06

2016-11-16 C

% Freq        Q                 Q (C.I. 95%)        Q (C.I. 95%)
1094.0        1.0880e+07        1.0873e+07        1.0886e+07
2188.0        1.0548e+07        1.0120e+07        1.1012e+07
2510.3        5.5686e+06        5.5662e+06        5.5709e+06
2548.5        1.4731e+05        1.4406e+05        1.5070e+05
3949.0        1.7959e+04        1.7957e+04        1.7961e+04
4373.0        3.7404e+06        3.7350e+06        3.7459e+06
4435.7        2.3448e+05        2.3401e+05        2.3495e+05
6671.0        2.9331e+06        2.9319e+06        2.9343e+06
6697.5        1.6931e+07        1.6927e+07        1.6936e+07
6744.3        2.3960e+06        2.3820e+06        2.4101e+06
9395.5        2.1238e+06        2.1073e+06        2.1405e+06
10093.2        1.0588e+06        1.0583e+06        1.0592e+06
10239.8        2.2057e+06        2.1138e+06        2.3059e+06
11310.5        8.0028e+04        8.0025e+04        8.0032e+04
12537.0        1.9366e+06        1.8964e+06        1.9785e+06
14012.0        4.0122e+06        3.9559e+06        4.0700e+06
15891.3        2.2887e+06        2.2460e+06        2.3331e+06
15914.3        1.1138e+07        1.1136e+07        1.1140e+07
16099.3        1.7494e+06        1.7465e+06        1.7523e+06
21117.9        7.0869e+06        7.0802e+06        7.0935e+06
24381.4        9.2827e+05        9.2825e+05        9.2828e+05
24700.0        1.9847e+06        1.9846e+06        1.9847e+06
26829.7        9.1098e+06        8.9846e+06        9.2385e+06
28544.0        3.9652e+06        3.9652e+06        3.9653e+06
28746.0        1.5590e+07        1.5326e+07        1.5863e+07
29887.6        1.0657e+07        1.0505e+07        1.0813e+07
30843.4        2.0614e+06        2.0613e+06        2.0614e+06
32236.6        2.9582e+06        2.9062e+06        3.0122e+06

 

 

 

  194   Thu Nov 17 09:35:51 2016 GabrieleGeneralMeasurementsS1600483

2016-11-17

  • 9:24am in chamber, balanced
  • 9:35am roughing pump on
  • 9:46am, turbo pump on
  • Excitations
    • Quiet time before excitation: 1163451715
      Excitation (1100 Hz) at 1163451747 (60 s)
      Excitation (broad band) at 1163451809 (60 s)
      Quiet time after excitation: 1163451871

    • Quiet time before excitation: 1163459101
      Excitation (1100 Hz) at 1163459133 (60 s)
      Excitation (broad band) at 1163459195 (60 s)
      Quiet time after excitation: 1163459257

  • 5:12pm, pumps off

Results

2016-11-17 A

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1110.6        5.2498e+06        5.2441e+06        5.2555e+06
1129.0        1.9008e+06        1.8988e+06        1.9028e+06
2546.3        2.5599e+06        2.5581e+06        2.5616e+06
2583.7        6.4098e+05        6.4022e+05        6.4174e+05
3600.5        1.4764e+06        1.4762e+06        1.4766e+06
4375.0        1.7752e+06        1.7646e+06        1.7859e+06
4433.3        1.7154e+06        1.7143e+06        1.7164e+06
4494.9        2.5500e+05        2.5476e+05        2.5523e+05
5266.0        2.1175e+06        2.1173e+06        2.1177e+06
6760.5        1.4261e+06        1.4249e+06        1.4273e+06
6778.3        7.4161e+06        7.3905e+06        7.4418e+06
6833.2        1.0592e+06        1.0586e+06        1.0597e+06
6893.1        5.8100e+04        5.8096e+04        5.8104e+04
9460.5        1.3366e+06        1.3366e+06        1.3367e+06
9518.8        1.2075e+06        1.2066e+06        1.2084e+06
9577.0        1.4045e+06        1.4044e+06        1.4046e+06
10361.5        9.2547e+05        9.1119e+05        9.4021e+05
12698.7        9.8384e+05        9.8240e+05        9.8528e+05
14185.0        3.7722e+06        3.6989e+06        3.8485e+06
16093.2        1.3155e+06        1.3120e+06        1.3190e+06
16105.8        4.9502e+06        4.8453e+06        5.0597e+06
16300.5        8.9537e+05        8.9535e+05        8.9540e+05
20280.0        4.6430e+05        4.6429e+05        4.6431e+05
21990.6        2.5384e+06        2.5383e+06        2.5384e+06
23585.0        2.3607e+06        2.3607e+06        2.3608e+06
24661.0        1.9657e+05        1.9657e+05        1.9658e+05
25335.0        2.1695e+06        2.1694e+06        2.1695e+06
25641.0        3.7421e+05        3.7420e+05        3.7422e+05
27148.6        5.0750e+06        5.0749e+06        5.0751e+06
28901.1        1.5001e+06        1.5001e+06        1.5002e+06
29471.0        6.6842e+06        6.6841e+06        6.6843e+06
29536.0        5.1655e+05        5.1655e+05        5.1656e+05
31209.5        6.6357e+05        6.6356e+05        6.6358e+05
31845.0        1.1993e+06        1.1992e+06        1.1993e+06

2016-11-17 B

% Freq        Q                 Q (C.I. 95%)        Q (C.I. 95%)
1110.5        5.1474e+06        5.1428e+06        5.1520e+06
1129.0        1.7959e+06        1.7941e+06        1.7977e+06
2487.7        2.2593e+06        2.2231e+06        2.2966e+06
2546.1        2.4932e+06        2.4917e+06        2.4948e+06
2583.6        6.7688e+05        6.7638e+05        6.7738e+05
2604.4        2.3700e+06        2.3388e+06        2.4020e+06
4374.7        1.4494e+06        1.4112e+06        1.4898e+06
4433.2        1.6734e+06        1.6723e+06        1.6745e+06
4494.8        2.5845e+05        2.5822e+05        2.5869e+05
6760.3        1.3915e+06        1.3904e+06        1.3925e+06
6778.0        7.2310e+06        7.2210e+06        7.2410e+06
6833.0        1.0473e+06        1.0469e+06        1.0478e+06
6893.0        5.8318e+04        5.8314e+04        5.8322e+04
9460.3        1.0963e+06        1.0962e+06        1.0963e+06
9518.4        1.1841e+06        1.1833e+06        1.1849e+06
9576.6        1.1146e+06        1.1145e+06        1.1146e+06
10217.0        8.1285e+05        8.1281e+05        8.1289e+05
10361.1        9.0908e+05        8.9989e+05        9.1846e+05
12698.2        9.8778e+05        9.7292e+05        1.0031e+06
14184.5        3.8766e+06        3.8765e+06        3.8767e+06
16092.6        1.2675e+06        1.2645e+06        1.2704e+06
16105.1        4.7982e+06        4.6884e+06        4.9132e+06
16299.9        8.4326e+05        8.4043e+05        8.4612e+05
20241.0        4.9087e+05        4.9086e+05        4.9088e+05
20279.4        4.9025e+05        4.9023e+05        4.9026e+05
21368.0        2.6590e+06        2.6589e+06        2.6591e+06
21643.5        3.3917e+05        3.3916e+05        3.3918e+05
23584.4        2.1538e+06        2.1538e+06        2.1539e+06
23734.6        3.5223e+05        3.5223e+05        3.5224e+05
27147.4        4.9544e+06        4.8874e+06        5.0233e+06
28899.9        1.4530e+06        1.4374e+06        1.4690e+06
29080.0        8.8363e+06        8.8362e+06        8.8365e+06
29522.4        4.6567e+05        4.6567e+05        4.6568e+05
30440.3        1.2458e+06        1.2457e+06        1.2458e+06
31211.0        6.6406e+05        6.6405e+05        6.6407e+05

 

  195   Thu Nov 17 12:06:39 2016 GabrieleGeneralVacuumSwitching on the IGM moves the disk

Here's a trend of the QPD signals when the IGM was turned on:

Turning it off does not bring the disk back.

  196   Thu Nov 17 12:08:28 2016 GabrieleGeneralGeneralRemote control of air filters and roughing pump

I installed a network controlled power strip. The two air filters and the roughing pump are connected to this power strip and can be controlled remotely.

I added new buttons to the main MEDM screen to control them remotely.

  197   Thu Nov 17 17:54:13 2016 GabrieleGeneralMeasurementsS1600439 after CO2 laser polishing

Previous measurments

  • post annealing 144
  • pre annealing 137

2016-11-17

  • 5:52pm, in chamber, balanced
  • 5:53pm, roughing pump on
  • 6:04pm, turbo pump on
  • 6:05pm, air filters off
  • Excitations:
    • Quiet time before excitation: 1163480205
      Excitation (1100 Hz) at 1163480237 (60 s)
      Excitation (broad band) at 1163480299 (60 s)
      Quiet time after excitation: 1163480361

    • Quiet time before excitation: 1163494791
      Excitation (1100 Hz) at 1163494824 (60 s)
      Excitation (broad band) at 1163494886 (60 s)
      Quiet time after excitation: 1163494948

    • Quiet time before excitation: 1163509378
      Excitation (1100 Hz) at 1163509411 (60 s)
      Excitation (broad band) at 1163509473 (60 s)
      Quiet time after excitation: 1163509535

2016-11-18

  • 8:47am, pumps off

Results

2016-11-17 A

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1127.6        3.7205e+07        3.7099e+07        3.7311e+07
1149.8        5.7351e+05        5.7170e+05        5.7532e+05
2516.5        1.1828e+07        1.1490e+07        1.2186e+07
2574.8        1.3400e+07        1.3395e+07        1.3404e+07
2633.3        1.2628e+07        1.2459e+07        1.2802e+07
4474.7        2.4553e+07        2.4547e+07        2.4559e+07
4544.8        1.8667e+05        1.8641e+05        1.8693e+05
6759.0        1.8704e+07        1.8468e+07        1.8946e+07
6789.3        2.5840e+07        2.5830e+07        2.5850e+07
6817.2        1.9911e+07        1.9909e+07        1.9914e+07
6875.5        1.9155e+07        1.8915e+07        1.9401e+07
6896.6        3.0284e+06        3.0201e+06        3.0366e+06
9593.1        1.3325e+07        1.3319e+07        1.3332e+07
10242.1        1.3837e+07        1.3830e+07        1.3844e+07
10407.9        1.8996e+06        1.8632e+06        1.9374e+06
12793.6        1.1109e+07        1.1108e+07        1.1110e+07
12852.0        1.0545e+07        9.7561e+06        1.1473e+07
16145.3        3.0830e+06        3.0717e+06        3.0943e+06
16157.3        3.1104e+06        3.1087e+06        3.1120e+06
16421.2        9.5753e+05        9.5258e+05        9.6254e+05
18715.3        8.1385e+06        8.1309e+06        8.1461e+06
20416.5        2.5193e+05        2.5192e+05        2.5193e+05
21438.5        1.0088e+07        1.0036e+07        1.0141e+07
21741.0        2.0006e+05        2.0006e+05        2.0007e+05
23667.3        1.4606e+07        1.4548e+07        1.4665e+07
23826.4        2.5707e+05        2.5707e+05        2.5708e+05
23986.1        6.6046e+06        6.5724e+06        6.6371e+06
24849.9        3.1250e+06        3.1187e+06        3.1313e+06
25164.4        8.5725e+06        8.4512e+06        8.6973e+06
25462.9        4.0887e+06        4.0761e+06        4.1014e+06
25483.9        4.1145e+06        4.0637e+06        4.1666e+06
27245.8        1.4814e+07        1.4743e+07        1.4884e+07
28991.0        1.3488e+07        1.3478e+07        1.3497e+07
29095.2        5.2186e+06        5.2043e+06        5.2330e+06
29167.4        1.6466e+07        1.6231e+07        1.6707e+07
29749.1        5.0360e+05        5.0359e+05        5.0361e+05
30206.6        4.2957e+06        4.2020e+06        4.3937e+06
31045.1        3.1095e+06        3.1029e+06        3.1161e+06
31088.9        9.3908e+06        9.3757e+06        9.4060e+06
31710.0        2.4880e+06        2.4880e+06        2.4880e+06
31969.7        1.1411e+07        1.1372e+07        1.1451e+07

2016-11-17 B

% Freq        Q                Q (C.I. 95%)        Q (C.I. 95%)
1127.9        3.7152e+07        3.7077e+07        3.7227e+07
2574.7        1.4429e+07        1.4424e+07        1.4434e+07
2633.0        1.6022e+07        1.4847e+07        1.7399e+07
4474.6        2.4432e+07        2.4419e+07        2.4445e+07
4544.7        1.9919e+05        1.9877e+05        1.9961e+05
6789.2        2.5907e+07        2.5888e+07        2.5927e+07
6817.0        1.9832e+07        1.9829e+07        1.9835e+07
6896.5        2.9655e+06        2.9546e+06        2.9765e+06
9593.0        1.3275e+07        1.3236e+07        1.3313e+07
10242.0        1.3491e+07        1.3479e+07        1.3502e+07
10407.7        1.8960e+06        1.8810e+06        1.9113e+06
12793.4        1.1592e+07        1.1590e+07        1.1594e+07
16144.7        4.6655e+06        4.5884e+06        4.7452e+06
16157.0        3.1237e+06        3.1216e+06        3.1258e+06
16420.9        1.3524e+06        1.3493e+06        1.3555e+06
17291.0        3.3682e+06        3.2925e+06        3.4475e+06
18714.9        8.1669e+06        8.1601e+06        8.1737e+06
20351.4        9.4653e+05        9.4188e+05        9.5123e+05
20416.2        1.1000e+06        1.0988e+06        1.1012e+06
21438.1        8.4404e+06        8.3969e+06        8.4845e+06
23666.9        1.4674e+07        1.4646e+07        1.4703e+07
23825.7        2.6272e+05        2.6271e+05        2.6272e+05
23987.0        5.6799e+06        5.6251e+06        5.7359e+06
24849.4        4.3992e+06        4.3821e+06        4.4165e+06
25165.0        9.0003e+06        8.8068e+06        9.2025e+06
25463.6        4.1230e+06        4.1124e+06        4.1336e+06
25484.8        4.1183e+06        4.0858e+06        4.1513e+06
28990.5        1.3604e+07        1.3550e+07        1.3658e+07
29094.6        5.9875e+06        5.9654e+06        6.0097e+06
29167.0        1.6703e+07        1.6387e+07        1.7032e+07
29748.5        5.6280e+05        5.6279e+05        5.6281e+05
30207.5        4.1567e+06        4.0927e+06        4.2228e+06
31045.8        3.2297e+06        3.2207e+06        3.2388e+06
31089.5        9.4448e+06        9.4187e+06        9.4709e+06
31711.0        2.4572e+06        2.4571e+06        2.4572e+06
31970.4        1.1648e+07        1.1605e+07        1.1691e+07

 

 

  198   Thu Nov 17 17:59:44 2016 Gabriele, AlastairGeneralGeneralCO2 laser polishing tests

We improved the control software of the laser polishing system: now the rotation speed is large when the laser is missing the disk because of the flats.

We used S1600479 as a test. This substrate was marked as damaged and had a clear chip. It went thoruhg two different polishing runs

  • CO2 power ~19.5 W, speed 0.5 mm/s
  • CO2 power ~18.5 W, speed 0.25 mm/s

The second run was probably too slow, and we can see some kind of traces left on the main surface close to the edges

We then laser polished a good subtrate (S1600439) which was already measured before (137) and after annealing (144), with good Q values. This is a substrate from the first batch we received from Mark Optics. The polishing was done at ~ 18W and 0.5 mm/s.

Some pictures below:

  199   Fri Nov 18 09:27:26 2016 GabrieleGeneralMeasurementsCO2 polishing improves the Q !!

The plot below shows that the Q values of S1600439 improved a lot after the CO2 laser polishing. About 15 modes have Q above 10e6. The first mode at 1kHz has a Q of 37e6, the highest ever measured so far!

Here's a comparison of the Q values of this sample before annealing, after annealing and after CO2 polishing.

  200   Fri Nov 18 11:39:59 2016 GabrieleGeneralMeasurementsS1600480

Note: marked at "D?" by Alena

2016-11-18

  • 11:38am, in chamber, balanced
  • 11:39am, roughing pump on
  • 11:51am, turbo pump on
  • 3:54pm, excitation (3kV), quiet time before 1163547289, quiet time after 1163548497
  • Automated excitations:
    • Quiet time before excitation: 1163563312
      Excitation (1100 Hz) at 1163563344 (60 s)
      Excitation (broad band) at 1163563406 (60 s)
      Quiet time after excitation: 1163563468

    • Quiet time before excitation: 1163577898
      Excitation (1100 Hz) at 1163577931 (60 s)
      Excitation (broad band) at 1163577993 (60 s)
      Quiet time after excitation: 1163578055

    • Quiet time before excitation: 1163592485
      Excitation (1100 Hz) at 1163592517 (60 s)
      Excitation (broad band) at 1163592579 (60 s)
      Quiet time after excitation: 1163592641

2016-11-20

  • 2:05pm pumps off

Results

2016-11-18 A

% Freq        Q                 Q (C.I. 95%)        Q (C.I. 95%)
1104.1        1.0173e+07        1.0152e+07        1.0195e+07
1124.3        8.2131e+05        8.1929e+05        8.2333e+05
2532.6        5.0306e+06        5.0249e+06        5.0363e+06
2573.3        1.3847e+06        1.3808e+06        1.3886e+06
4411.2        2.8588e+06        2.8563e+06        2.8613e+06
4476.9        2.0843e+05        2.0731e+05        2.0956e+05
6729.4        2.6143e+06        2.6132e+06        2.6155e+06
6747.8        1.2395e+07        1.2374e+07        1.2417e+07
6806.2        2.1725e+06        2.1449e+06        2.2008e+06
6873.5        1.4735e+05        1.4563e+05        1.4911e+05
9478.1        2.0101e+06        2.0082e+06        2.0120e+06
10171.9        9.4754e+06        9.4682e+06        9.4827e+06
10325.5        2.9800e+06        2.9785e+06        2.9815e+06
12648.0        1.7468e+06        1.7413e+06        1.7524e+06
12773.7        5.3335e+05        5.2619e+05        5.4072e+05
14123.2        7.1655e+06        7.1632e+06        7.1678e+06
16018.0        2.2296e+06        2.2274e+06        2.2319e+06
16033.8        6.7662e+06        6.7549e+06        6.7775e+06
16242.7        1.5742e+06        1.5712e+06        1.5773e+06
17697.8        1.1028e+06        1.0837e+06        1.1227e+06
18281.0        1.5366e+06        1.5366e+06        1.5366e+06
18573.5        4.3588e+05        4.3587e+05        4.3589e+05
18745.4        3.4263e+05        3.4262e+05        3.4264e+05
20032.7        3.3234e+05        3.3233e+05        3.3235e+05
20150.9        1.1528e+06        1.1528e+06        1.1529e+06
20206.1        1.2661e+06        1.2631e+06        1.2691e+06
21282.5        1.0456e+07        1.0450e+07        1.0462e+07
21568.7        5.5263e+05        5.4626e+05        5.5915e+05
22166.5        2.8542e+06        2.8541e+06        2.8542e+06
23484.9        5.0281e+06        5.0189e+06        5.0374e+06
23636.0        4.3875e+05        4.3874e+05        4.3876e+05
24559.0        1.9874e+05        1.9873e+05        1.9874e+05
24598.4        1.3312e+06        1.2994e+06        1.3647e+06
25479.2        4.4672e+06        4.3821e+06        4.5558e+06
27041.0        4.9796e+06        4.9564e+06        5.0031e+06
28764.5        2.2975e+06        2.2895e+06        2.3055e+06
28862.1        2.7554e+06        2.7260e+06        2.7855e+06
29272.0        7.3791e+05        7.3790e+05        7.3792e+05
29453.0        3.7211e+05        3.7211e+05        3.7212e+05
29617.4        5.4367e+06        5.3598e+06        5.5159e+06
30529.7        1.9682e+06        1.9682e+06        1.9683e+06
31344.8        9.4048e+05        9.4047e+05        9.4050e+05
31970.0        4.2696e+06        4.2435e+06        4.2960e+06
32227.0        6.7855e+06        6.7854e+06        6.7856e+06

2016-11-18 B



% Freq        Q                 Q (C.I. 95%)        Q (C.I. 95%)
1104.0        1.0297e+07        1.0284e+07        1.0311e+07
1124.4        1.1668e+06        1.1652e+06        1.1684e+06
2532.6        5.0152e+06        5.0134e+06        5.0170e+06
2573.3        1.4606e+06        1.4576e+06        1.4637e+06
4411.3        3.3395e+06        3.3382e+06        3.3409e+06
4477.1        2.0944e+05        2.0896e+05        2.0991e+05
6729.7        2.6053e+06        2.6046e+06        2.6061e+06
6748.2        1.2388e+07        1.2379e+07        1.2398e+07
6806.5        2.1415e+06        2.1369e+06        2.1461e+06
6873.8        1.4706e+05        1.4619e+05        1.4794e+05
9478.4        2.0036e+06        2.0025e+06        2.0046e+06
10172.5        9.4094e+06        9.3186e+06        9.5020e+06
10326.0        2.9820e+06        2.9804e+06        2.9836e+06
12648.4        1.7268e+06        1.7241e+06        1.7295e+06
12774.1        4.9106e+05        4.7983e+05        5.0283e+05
14123.6        3.1322e+06        3.1310e+06        3.1335e+06
16018.6        2.2761e+06        2.2742e+06        2.2780e+06
16034.5        8.0306e+06        8.0250e+06        8.0361e+06
16243.3        1.5954e+06        1.5909e+06        1.5998e+06
18574.2        3.3307e+06        3.3155e+06        3.3460e+06
18746.1        9.1765e+05        9.1638e+05        9.1892e+05
20151.5        1.0945e+06        1.0635e+06        1.1273e+06
20206.9        1.2644e+06        1.2579e+06        1.2709e+06
21283.4        1.0704e+07        1.0692e+07        1.0717e+07
21569.6        5.5770e+05        5.5558e+05        5.5983e+05
23485.8        5.0910e+06        5.0796e+06        5.1023e+06
24599.2        1.2773e+06        1.2665e+06        1.2883e+06
25477.5        4.3947e+06        4.3268e+06        4.4648e+06
25828.0        7.4575e+05        7.2022e+05        7.7315e+05
27042.2        4.9480e+06        4.9335e+06        4.9625e+06
28765.8        2.2507e+06        2.2298e+06        2.2721e+06
28863.2        2.7105e+06        2.6968e+06        2.7243e+06
28961.6        8.5083e+06        8.4642e+06        8.5529e+06
29615.6        5.4281e+06        5.2865e+06        5.5774e+06
30528.4        1.9676e+06        1.9223e+06        2.0150e+06
31343.4        9.0249e+05        8.8999e+05        9.1536e+05
31968.6        4.2914e+06        4.2817e+06        4.3012e+06

2016-11-18 C

% Freq        Q                 Q (C.I. 95%)        Q (C.I. 95%)
1104.1        1.0082e+07        1.0063e+07        1.0100e+07
1124.5        1.3397e+06        1.3366e+06        1.3427e+06
2532.8        4.9558e+06        4.9513e+06        4.9604e+06
2573.5        1.4059e+06        1.3996e+06        1.4122e+06
4411.6        3.1148e+06        3.1116e+06        3.1180e+06
4477.4        2.1088e+05        2.1055e+05        2.1121e+05
6730.2        2.5865e+06        2.5850e+06        2.5881e+06
6748.7        1.2747e+07        1.2486e+07        1.3019e+07
6807.0        2.1437e+06        2.1251e+06        2.1626e+06
6874.2        1.5494e+05        1.5375e+05        1.5614e+05
9479.1        2.0187e+06        1.9656e+06        2.0748e+06
10173.2        9.4877e+06        9.4764e+06        9.4990e+06
10326.7        3.0116e+06        3.0106e+06        3.0127e+06
12649.3        1.7115e+06        1.6986e+06        1.7247e+06
14124.9        9.1986e+05        9.1825e+05        9.2148e+05
16019.8        2.2901e+06        2.2890e+06        2.2913e+06
16035.7        8.1365e+06        8.1202e+06        8.1529e+06
16244.6        1.5627e+06        1.5520e+06        1.5735e+06
18575.7        5.0190e+06        5.0085e+06        5.0296e+06
18747.6        2.2873e+06        2.2850e+06        2.2896e+06
20153.0        1.1379e+06        1.1286e+06        1.1474e+06
20208.4        1.2843e+06        1.2797e+06        1.2891e+06
21285.1        1.0850e+07        1.0800e+07        1.0899e+07
23487.6        5.1931e+06        5.1699e+06        5.2165e+06
23638.5        4.6983e+05        4.5937e+05        4.8078e+05
24562.0        2.0605e+05        1.9793e+05        2.1488e+05
25474.4        4.3828e+06        4.2782e+06        4.4926e+06
27044.4        4.4216e+06        4.4140e+06        4.4293e+06
28767.9        2.2400e+06        2.2194e+06        2.2610e+06
28865.5        2.4306e+06        2.3822e+06        2.4810e+06
28963.9        8.4171e+06        8.3301e+06        8.5059e+06
29425.5        1.2180e+06        1.1936e+06        1.2434e+06
30525.7        1.9877e+06        1.9649e+06        2.0110e+06
31340.9        9.0879e+05        8.9734e+05        9.2053e+05
31965.9        4.3188e+06        4.3004e+06        4.3374e+06
32222.9        6.8476e+06        6.7375e+06        6.9614e+06

 

  201   Fri Nov 18 15:48:09 2016 GabrieleGeneralMeasurementsMicroscope inspection of CO2 polished samples

S1600470

For reference, this sample has not been CO2 polished, but it has been annealed and measured. It has quite low Q values. Here are some images of the edges. The first two are taken with light from above. In the second one there some clear red residual, which is also visible as a coloration with the naked eye. The microroughness and some larger defect are well visible.

The following images instead are taken with light from below. The red residual is even more evident, and some traces probably due to the machining are clearly visible.

S1600479

This sample has been laser polished with a double pass (first at 0.5 mm/s, second at 0.25 mm/s). The first two images are taken with light from above: they are not very clear because of the specular reflection of the lamps. This already indicates that the surface is much smoother. Some defects (bubbles?) are visible close to the main surfaces.

The surface quality is more apparent in the following pictures, taken with light from below. The second one is taken where there is a chip in the main surface, and indeed one can see the shading due to the light distortion iduced by the chip. Also a cluster of "bubbles" is clearly visible there.

S1600462

This was our first polishing test. It is interesting because the laser tripped during the procedure, so we have a neat transition from the original surface to the polished one. First image taken with light from above, second with light from below

Attachment 9: S1600462_3.png
S1600462_3.png
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