| ID |
Date |
Author |
Type |
Category |
Subject |
|
231
|
Tue Dec 6 16:55:51 2016 |
Gabriele | Electronics | Configuration | Trying to debug GPS time issue |
Update at 5pm, GPS times are still in sync.
|
|
230
|
Tue Dec 6 14:57:33 2016 |
Gabriele | General | Measurements | S1600486 post laser polishing |
Note: marked as scratched by Alena
2016-12-06
- 2:44pm, in chamber, balanced
- 2:46pm, roughing pump on
- 2:57pm, turbo pump on
- Excitations:
-
Quiet time before excitation: 1165111173
Excitation (broad band) at 1165111205 (60 s)
Quiet time after excitation: 1165111267
-
Quiet time before excitation: 1165125697
Excitation (broad band) at 1165125729 (60 s)
Quiet time after excitation: 1165125791
-
Quiet time before excitation: 1165140221
Excitation (broad band) at 1165140253 (60 s)
Quiet time after excitation: 1165140315
2012-12-07
Results
2016-11-06 A
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1109.7 4.0692e+07 4.0198e+07 4.1198e+07
1130.4 2.3580e+06 2.3557e+06 2.3604e+06
2533.1 7.2674e+05 7.2562e+05 7.2786e+05
2574.5 5.5540e+04 5.5210e+04 5.5875e+04
4401.1 2.5934e+07 2.5895e+07 2.5973e+07
6677.0 1.1663e+07 1.1655e+07 1.1671e+07
6703.7 1.8348e+06 1.8328e+06 1.8367e+06
6777.9 2.7639e+06 2.7614e+06 2.7664e+06
9432.0 4.2054e+05 4.1564e+05 4.2556e+05
10074.1 9.4578e+06 9.4442e+06 9.4714e+06
10230.6 1.4532e+06 1.4492e+06 1.4572e+06
10269.5 1.4339e+06 1.3237e+06 1.5641e+06
10272.5 1.5802e+06 1.4639e+06 1.7167e+06
12113.0 2.2279e+06 2.1313e+06 2.3336e+06
12551.0 5.5340e+06 5.3374e+06 5.7457e+06
12554.0 5.7261e+06 5.5380e+06 5.9273e+06
12576.7 5.2804e+06 5.2660e+06 5.2949e+06
12699.5 1.5337e+06 1.5252e+06 1.5423e+06
13995.0 6.9111e+06 6.8879e+06 6.9344e+06
15884.1 3.2752e+06 3.2367e+06 3.3146e+06
15893.1 6.3130e+06 6.2429e+06 6.3847e+06
16140.4 2.7621e+06 2.7335e+06 2.7913e+06
18082.4 3.2628e+06 3.2181e+06 3.3087e+06
18409.4 9.3191e+06 9.2638e+06 9.3749e+06
20070.5 2.6063e+06 2.5545e+06 2.6603e+06
21087.5 1.8021e+07 1.7921e+07 1.8121e+07
23270.0 6.6877e+06 6.2852e+06 7.1452e+06
23284.2 6.4198e+06 6.3502e+06 6.4909e+06
24426.4 5.9323e+06 5.7957e+06 6.0754e+06
26801.1 1.5681e+07 1.5517e+07 1.5848e+07
28528.9 9.4049e+06 9.2822e+06 9.5309e+06
30807.6 7.0927e+06 6.9400e+06 7.2523e+06
31637.3 4.9001e+06 4.7168e+06 5.0982e+06
2016-12-06 B
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1110.0 4.0898e+07 4.0699e+07 4.1098e+07
1130.4 2.4968e+06 2.4940e+06 2.4995e+06
2533.1 3.0816e+05 3.0712e+05 3.0921e+05
2574.6 5.1835e+04 5.1723e+04 5.1948e+04
4400.9 2.6081e+07 2.6051e+07 2.6110e+07
6676.8 1.4510e+07 1.4498e+07 1.4522e+07
6703.5 1.7594e+06 1.7575e+06 1.7614e+06
6777.9 2.5212e+06 2.5190e+06 2.5234e+06
9432.2 4.6496e+05 4.6114e+05 4.6885e+05
10041.0 8.9046e+06 8.7097e+06 9.1084e+06
10074.2 9.2417e+06 9.2291e+06 9.2544e+06
10118.0 9.3278e+06 9.1242e+06 9.5408e+06
10215.5 2.5297e+06 2.3859e+06 2.6918e+06
10230.5 1.4901e+06 1.4844e+06 1.4959e+06
12576.6 4.8231e+06 4.8087e+06 4.8375e+06
12699.5 1.5633e+06 1.5547e+06 1.5720e+06
13994.9 6.6141e+06 6.5947e+06 6.6336e+06
15883.1 2.9889e+06 2.9608e+06 3.0175e+06
15893.0 5.8882e+06 5.7626e+06 6.0194e+06
16140.5 2.3710e+06 2.3026e+06 2.4436e+06
18082.5 3.1473e+06 3.0782e+06 3.2196e+06
18409.5 8.9605e+06 8.8329e+06 9.0918e+06
20069.6 2.6341e+06 2.5542e+06 2.7192e+06
21087.5 2.2138e+07 2.1593e+07 2.2711e+07
23261.5 8.4257e+06 8.0368e+06 8.8541e+06
23284.2 7.7673e+06 7.6967e+06 7.8392e+06
24677.4 3.7815e+06 3.6917e+06 3.8759e+06
26800.7 1.5883e+07 1.5612e+07 1.6163e+07
28528.6 6.3924e+06 6.2850e+06 6.5035e+06
28547.0 6.6445e+06 6.3100e+06 7.0164e+06
28697.5 3.4170e+06 3.2882e+06 3.5564e+06
2016-12-06 C
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1110.0 3.9831e+07 3.9595e+07 4.0070e+07
1130.4 2.5187e+06 2.5146e+06 2.5228e+06
2533.1 2.0051e+05 1.9944e+05 2.0158e+05
2574.7 5.0078e+04 4.9947e+04 5.0209e+04
4401.0 2.6148e+07 2.6116e+07 2.6180e+07
4466.0 1.9195e+05 1.8808e+05 1.9597e+05
6677.0 1.6348e+07 1.6334e+07 1.6362e+07
6703.5 1.7691e+06 1.7676e+06 1.7707e+06
6777.6 2.2974e+06 2.2951e+06 2.2997e+06
9432.0 4.9962e+05 4.9753e+05 5.0173e+05
9438.0 5.1125e+05 4.7959e+05 5.4738e+05
9440.0 5.2633e+05 4.8682e+05 5.7282e+05
10038.5 9.6023e+06 9.3617e+06 9.8556e+06
10074.1 8.9653e+06 8.9527e+06 8.9779e+06
10117.5 9.1766e+06 8.9495e+06 9.4154e+06
10230.4 1.5302e+06 1.5227e+06 1.5378e+06
12576.4 4.6067e+06 4.5948e+06 4.6186e+06
12699.5 1.5834e+06 1.5749e+06 1.5919e+06
13994.8 9.3708e+06 9.3458e+06 9.3960e+06
15883.5 2.8463e+06 2.8018e+06 2.8922e+06
15893.0 5.7257e+06 5.6080e+06 5.8485e+06
16140.1 1.4682e+06 1.4471e+06 1.4899e+06
18082.9 3.1445e+06 3.1008e+06 3.1894e+06
18410.0 9.7225e+06 9.5594e+06 9.8912e+06
20072.6 2.7615e+06 2.6596e+06 2.8716e+06
21087.0 1.8180e+07 1.8047e+07 1.8314e+07
23284.1 8.7746e+06 8.6857e+06 8.8653e+06
24426.3 4.6250e+06 4.5275e+06 4.7268e+06
24678.1 3.9254e+06 3.8243e+06 4.0320e+06
26801.1 1.5859e+07 1.5532e+07 1.6201e+07
28528.5 4.8476e+06 4.7219e+06 4.9801e+06
29936.0 1.0024e+07 9.7180e+06 1.0351e+07
30807.4 6.6210e+06 6.4586e+06 6.7918e+06
|
|
229
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Tue Dec 6 11:22:58 2016 |
Gabriele | Electronics | Configuration | Trying to debug GPS time issue |
I swapped the SR signal generator with an Agilent 33210A. Shut down and restarted the cymac3. Now the command line GPS and the IOP model GPS are aligned within one second. Let's see if it stays this way.
| Quote: |
|
UPDATE:
Now the time difference is about 30 seconds. It seems that the real time model is about 29 seconds advanced with respect to the GPS time one gets from a python script command running on the cymac3
The GPS time I get from python is the same I get from a shell script on the workstation or on the cymac3. I checked that it is also consistent with the GPS time on cymac2.
I moved the picomotors at precise times and looked at the data in the frames. Indeed the data has the wrong time stamp.
| Quote: |
|
Things seems to be worse now. This morning I injected noise at GPS 1165078533 (real time, as obtained from the python command line, and consistent with what displayed in the MEDM screen) and found the injection in the data at GPS 1165078555, so 22 seconds later...
| Quote: |
|
For a long time I had problems with the GPS time in frames being different from the real one.
This morning I rebooted the cymac3 and swapped the function generator with a new one.
I tested the GPS time in frames by switching on teh ESD noise at a given GPS time and checking the frames. The times are aligned.
I'll have to wait and see if this remains stable over time (in the past i saw an acculation of few seconds per day)
EDIT: I checked the two SR DS345 one against the other. Indeed, when bpth set to generate 65536 Hz, there is a continuos drift in the relative phase, accounting for one cycle over about 3.9 seconds. This would sum up to one second over ~256000 seconds, or about 3.5 days. It seems more or less comparable with the amount of GPS time mis-syncronization I saw. I'll have to wait a few days to see if the new clock is stable.
|
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228
|
Tue Dec 6 10:38:19 2016 |
Gabriele | Electronics | Configuration | Trying to debug GPS time issue |
UPDATE:
Now the time difference is about 30 seconds. It seems that the real time model is about 29 seconds advanced with respect to the GPS time one gets from a python script command running on the cymac3
The GPS time I get from python is the same I get from a shell script on the workstation or on the cymac3. I checked that it is also consistent with the GPS time on cymac2.
I moved the picomotors at precise times and looked at the data in the frames. Indeed the data has the wrong time stamp.
| Quote: |
|
Things seems to be worse now. This morning I injected noise at GPS 1165078533 (real time, as obtained from the python command line, and consistent with what displayed in the MEDM screen) and found the injection in the data at GPS 1165078555, so 22 seconds later...
| Quote: |
|
For a long time I had problems with the GPS time in frames being different from the real one.
This morning I rebooted the cymac3 and swapped the function generator with a new one.
I tested the GPS time in frames by switching on teh ESD noise at a given GPS time and checking the frames. The times are aligned.
I'll have to wait and see if this remains stable over time (in the past i saw an acculation of few seconds per day)
EDIT: I checked the two SR DS345 one against the other. Indeed, when bpth set to generate 65536 Hz, there is a continuos drift in the relative phase, accounting for one cycle over about 3.9 seconds. This would sum up to one second over ~256000 seconds, or about 3.5 days. It seems more or less comparable with the amount of GPS time mis-syncronization I saw. I'll have to wait a few days to see if the new clock is stable.
|
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227
|
Tue Dec 6 09:02:17 2016 |
Gabriele | Electronics | Configuration | Trying to debug GPS time issue |
Things seems to be worse now. This morning I injected noise at GPS 1165078533 (real time, as obtained from the python command line, and consistent with what displayed in the MEDM screen) and found the injection in the data at GPS 1165078555, so 22 seconds later...
| Quote: |
|
For a long time I had problems with the GPS time in frames being different from the real one.
This morning I rebooted the cymac3 and swapped the function generator with a new one.
I tested the GPS time in frames by switching on teh ESD noise at a given GPS time and checking the frames. The times are aligned.
I'll have to wait and see if this remains stable over time (in the past i saw an acculation of few seconds per day)
EDIT: I checked the two SR DS345 one against the other. Indeed, when bpth set to generate 65536 Hz, there is a continuos drift in the relative phase, accounting for one cycle over about 3.9 seconds. This would sum up to one second over ~256000 seconds, or about 3.5 days. It seems more or less comparable with the amount of GPS time mis-syncronization I saw. I'll have to wait a few days to see if the new clock is stable.
|
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226
|
Mon Dec 5 16:35:05 2016 |
Gabriele | Electronics | General | High voltage relais |
We want to be able to drive any combination of the four samples in the new setup, by using only one HV amplifier.
So I designed and built a remotely controlled relay box: one HV input and four HV outputs, controlled by four relais. The relais can be switched using a logic signal coming from DAC channels.
The system is finished, tested and working. Details in D1600456
  
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225
|
Mon Dec 5 12:59:48 2016 |
Gabriele | General | Measurements | S1600485 post laser polishing |
2016-12-05
- 12:45pm, in chamber, balanced
- 12:46pm, roughing pump on
- 12:59pm, turbo pump on
- Excitations:
-
Quiet time before excitation: 1165019273
Excitation (broad band) at 1165019305 (60 s)
Quiet time after excitation: 1165019367
-
Quiet time before excitation: 1165033797
Excitation (broad band) at 1165033829 (60 s)
Quiet time after excitation: 1165033891
-
Quiet time before excitation: 1165048321
Excitation (broad band) at 1165048353 (60 s)
Quiet time after excitation: 1165048415
2016-12-06
- Excitations:
-
11:02am, pumps off
|
|
224
|
Mon Dec 5 10:39:16 2016 |
Gabriele | Electronics | Configuration | Trying to debug GPS time issue |
For a long time I had problems with the GPS time in frames being different from the real one.
This morning I rebooted the cymac3 and swapped the function generator with a new one.
I tested the GPS time in frames by switching on teh ESD noise at a given GPS time and checking the frames. The times are aligned.
I'll have to wait and see if this remains stable over time (in the past i saw an acculation of few seconds per day)
EDIT: I checked the two SR DS345 one against the other. Indeed, when bpth set to generate 65536 Hz, there is a continuos drift in the relative phase, accounting for one cycle over about 3.9 seconds. This would sum up to one second over ~256000 seconds, or about 3.5 days. It seems more or less comparable with the amount of GPS time mis-syncronization I saw. I'll have to wait a few days to see if the new clock is stable. |
|
223
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Fri Dec 2 14:05:47 2016 |
Gabriele | General | General | MIT bare disk losses reproduced with edge and surface losses |
The measured losses of the MIT bare disk show a remarkable split into families. The plot belo shows the measured total loss angles (error bars comes from dispersion of multiple measurements)
Using a COMSOL model, and tuning some parameters (E = 73.2 GPa, nu = 0.164, rho = 2202 kg/m^3, thickness = 0.511 mm) I can roughly reproduce the measured mode frequencies, within some tens of Hz:
There is still some splitting into families, so my guess is that the Poisson ratio is not quite right. But this is good enough for now. From this simulation, I can extract the various energies (bulk and shear) in different domains. In particular I'm focusing on the edge and surface energies. The following plot shows the ratio of shear/bulk edge energies over the total energy, as an example.
Now I used the edge shear energy ratio and the surface bulk energy ratio, and that's enough to reproduce the distribution of the measured loss angles:
The measured losses are well described by the following equation:
loss = 4.8e-6 * E_surface_bulk / E_tot + 1.2e-3 * E_edge_shear
The energy ratios here are not dimensionless, since they are the result of a surface integral over a volume integral. So to extract the real loss angles of the surface/edge defects we have to estimate the thickness of the surface/edge lossy area. |
| Attachment 4: losses_fit.png
|
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222
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Fri Dec 2 11:20:56 2016 |
Gabriele | General | Measurements | S1600484 after laser polishing |
2016-12-02
- 11:08am, in chamber, balanced
- 11:10am, roughing pump on
- 11:20am, turbo pump on
- Excitations:
- Quiet time before excitation: 1164752200
Quiet time after excitation: 1164752486
-
Quiet time before excitation: 1164763364
Excitation (broad band) at 1164763397 (60 s)
Quiet time after excitation: 1164763459
-
Quiet time before excitation: 1164774289
Excitation (broad band) at 1164774322 (60 s)
Quiet time after excitation: 1164774384
-
Quiet time before excitation: 1164785214
Excitation (broad band) at 1164785246 (60 s)
Quiet time after excitation: 1164785308
2016-12-05
Results
2016-12-02 A
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1123.6 4.4547e+07 4.4226e+07 4.4872e+07
1144.4 1.6095e+06 1.6080e+06 1.6111e+06
2507.2 1.9029e+07 1.8865e+07 1.9196e+07
2565.7 2.1672e+07 2.1661e+07 2.1682e+07
2606.5 1.0177e+06 1.0172e+06 1.0182e+06
2623.7 2.0058e+07 1.9885e+07 2.0233e+07
4457.8 2.8825e+06 2.8820e+06 2.8831e+06
4516.0 2.6781e+06 2.6373e+06 2.7203e+06
6732.1 1.7486e+07 1.7413e+07 1.7561e+07
6762.2 2.8949e+07 2.8860e+07 2.9037e+07
6790.3 1.8633e+07 1.8630e+07 1.8635e+07
6848.5 1.7815e+07 1.7740e+07 1.7891e+07
6865.9 7.9181e+05 7.9078e+05 7.9284e+05
9554.0 7.0446e+06 7.0433e+06 7.0458e+06
10202.5 8.8916e+06 8.8889e+06 8.8942e+06
10359.4 2.3946e+06 2.3839e+06 2.4054e+06
12739.3 2.2738e+06 2.2716e+06 2.2761e+06
12862.8 1.0330e+06 1.0289e+06 1.0371e+06
14171.9 5.1086e+06 5.0988e+06 5.1184e+06
16096.9 1.9349e+07 1.9326e+07 1.9373e+07
16348.0 8.4181e+06 8.4141e+06 8.4222e+06
18641.8 6.9884e+05 6.8917e+05 7.0877e+05
18815.5 7.5157e+05 7.3926e+05 7.6430e+05
19704.4 2.3376e+06 2.2789e+06 2.3995e+06
20273.5 1.0526e+06 1.0311e+06 1.0750e+06
20328.5 7.7314e+06 7.6796e+06 7.7839e+06
23576.6 1.1741e+07 1.1730e+07 1.1751e+07
24737.7 3.0533e+06 3.0023e+06 3.1059e+06
25614.3 4.3903e+06 4.3015e+06 4.4828e+06
27132.2 9.7722e+06 9.7162e+06 9.8289e+06
28887.1 1.4755e+07 1.4722e+07 1.4789e+07
28987.2 1.2025e+07 1.2004e+07 1.2045e+07
29051.1 1.3645e+07 1.3564e+07 1.3728e+07
2016-12-02 B
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1124.0 4.7359e+07 4.6976e+07 4.7747e+07
1144.5 1.6369e+06 1.6353e+06 1.6385e+06
2566.0 2.2381e+07 2.2368e+07 2.2393e+07
2606.6 1.0081e+06 1.0075e+06 1.0088e+06
4458.0 2.8784e+06 2.8774e+06 2.8794e+06
4516.0 2.9668e+06 2.8935e+06 3.0440e+06
6762.6 2.9139e+07 2.9072e+07 2.9207e+07
6790.6 1.9114e+07 1.9109e+07 1.9120e+07
9554.5 6.8250e+06 6.8030e+06 6.8471e+06
10203.1 8.7899e+06 8.7697e+06 8.8102e+06
12740.0 2.4202e+06 2.3984e+06 2.4424e+06
12863.4 1.0943e+06 1.0904e+06 1.0982e+06
14172.7 5.0284e+06 5.0177e+06 5.0391e+06
16083.0 2.0692e+07 2.0436e+07 2.0954e+07
16097.8 1.9626e+07 1.9621e+07 1.9632e+07
16348.8 8.5943e+06 8.5814e+06 8.6073e+06
19702.0 2.3940e+06 2.3434e+06 2.4468e+06
20329.4 8.0641e+06 8.0297e+06 8.0988e+06
23578.0 1.0707e+07 1.0675e+07 1.0740e+07
24739.0 3.2440e+06 3.1722e+06 3.3191e+06
27134.0 9.9640e+06 9.7155e+06 1.0226e+07
28888.5 1.5363e+07 1.5278e+07 1.5449e+07
28989.0 1.1648e+07 1.1623e+07 1.1672e+07
29052.5 1.3554e+07 1.3321e+07 1.3795e+07
29499.4 7.0586e+06 6.9311e+06 7.1908e+06
31172.0 3.4291e+06 3.3377e+06 3.5257e+06
2016-12-02 C
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1124.0 4.6838e+07 4.6384e+07 4.7300e+07
1144.4 1.6698e+06 1.6673e+06 1.6723e+06
2507.0 2.0602e+07 1.9878e+07 2.1380e+07
2565.9 2.2525e+07 2.2512e+07 2.2537e+07
2606.6 9.8280e+05 9.8213e+05 9.8346e+05
2623.7 2.1807e+07 2.1557e+07 2.2063e+07
3899.0 3.0267e+04 2.9315e+04 3.1283e+04
4458.1 2.7345e+06 2.7334e+06 2.7356e+06
6732.5 1.9119e+07 1.8913e+07 1.9331e+07
6762.8 2.9093e+07 2.9009e+07 2.9178e+07
6790.8 1.9322e+07 1.9319e+07 1.9326e+07
6849.1 1.9659e+07 1.8960e+07 2.0411e+07
9554.7 6.7030e+06 6.6940e+06 6.7121e+06
10203.4 8.7345e+06 8.7251e+06 8.7439e+06
12740.2 2.5144e+06 2.5080e+06 2.5208e+06
12863.7 1.1036e+06 1.1020e+06 1.1052e+06
14173.1 4.8696e+06 4.8578e+06 4.8816e+06
16098.1 1.9691e+07 1.9678e+07 1.9704e+07
16349.2 8.7666e+06 8.7590e+06 8.7743e+06
18643.4 1.2705e+06 1.2651e+06 1.2760e+06
20275.1 6.7929e+05 6.7513e+05 6.8350e+05
20330.0 8.2770e+06 8.2439e+06 8.3104e+06
23578.5 9.5784e+06 9.5536e+06 9.6034e+06
27134.5 1.0034e+07 9.9648e+06 1.0104e+07
28889.4 1.5698e+07 1.5572e+07 1.5827e+07
28989.3 1.0586e+07 1.0515e+07 1.0658e+07
31205.0 7.2273e+05 7.0149e+05 7.4531e+05
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221
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Fri Dec 2 10:56:40 2016 |
Gabriele | General | Measurements | Cleaning improves the Q values a bit |
The plot below compares the measured Q values of S1600433 right after annealing, and after GariLynn cleaned it. Q values are in general improved a bit after cleaning.
|
| Attachment 1: cleaning.png
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220
|
Thu Dec 1 11:59:21 2016 |
Gabriele, Alastair | General | General | Laser polishing |
Today we laser polished S1600484, S1600485 and S1600486.
 
 
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219
|
Thu Dec 1 11:55:09 2016 |
Gabriele | General | Measurements | S1600433 |
Note: sample deep cleaned by GariLynn
2016-12-01
- 11:45am, installed back the movable alignment ring, realigned optical setup to horizontal reference
- 11:52am, sample in chamber, balanced
- 11:54am, roughing pump on
- 12:06pm, turbo pump on
- Excitations
-
Quiet time before excitation: 1164664951
Excitation (broad band) at 1164665116 (60 s)
Quiet time after excitation: 1164665178
-
Quiet time before excitation: 1164676008
Excitation (broad band) at 1164676041 (60 s)
Quiet time after excitation: 1164676103
-
Quiet time before excitation: 1164686933
Excitation (broad band) at 1164686965 (60 s)
Quiet time after excitation: 1164687027
2016-12-02
Results
2016-12-01 A
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1112.0 5.4758e+06 5.4729e+06 5.4787e+06
2550.1 2.3526e+06 2.3516e+06 2.3535e+06
3382.9 3.0202e+06 3.0098e+06 3.0307e+06
3653.0 1.9478e+06 1.8176e+06 2.0980e+06
3661.7 2.7811e+06 2.7725e+06 2.7898e+06
4442.3 2.1488e+06 2.1482e+06 2.1493e+06
5100.1 2.2806e+06 2.2621e+06 2.2994e+06
6777.9 1.8246e+06 1.8243e+06 1.8249e+06
6788.5 8.1295e+06 8.1231e+06 8.1360e+06
6858.4 1.1642e+06 1.1639e+06 1.1645e+06
9548.2 1.4693e+06 1.4689e+06 1.4697e+06
10233.4 5.5505e+06 5.5477e+06 5.5533e+06
10395.9 1.7065e+06 1.7020e+06 1.7110e+06
12744.0 1.2980e+06 1.2957e+06 1.3003e+06
12877.4 5.4532e+05 5.4335e+05 5.4731e+05
14209.0 5.1790e+06 5.1761e+06 5.1819e+06
16123.1 1.2440e+06 1.2389e+06 1.2492e+06
16368.9 1.1801e+06 1.1759e+06 1.1842e+06
18686.0 3.7107e+06 3.6795e+06 3.7424e+06
20365.0 4.7226e+05 4.6383e+05 4.8101e+05
21414.0 8.2349e+06 8.2195e+06 8.2503e+06
23628.1 3.4507e+06 3.4303e+06 3.4714e+06
24797.0 9.7549e+05 9.5712e+05 9.9458e+05
27208.4 6.8971e+06 6.8561e+06 6.9387e+06
28943.4 2.1728e+06 2.1506e+06 2.1954e+06
29052.0 1.6619e+06 1.6301e+06 1.6950e+06
2016-12-01 B
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1111.6 5.5847e+06 5.5812e+06 5.5883e+06
2266.3 1.3702e+06 1.3669e+06 1.3734e+06
2549.9 2.5450e+06 2.5440e+06 2.5460e+06
4441.9 2.1936e+06 2.1932e+06 2.1940e+06
6777.6 1.8629e+06 1.8627e+06 1.8632e+06
6788.7 8.2746e+06 8.2724e+06 8.2768e+06
6858.2 1.0572e+06 1.0570e+06 1.0574e+06
9547.9 1.5059e+06 1.5015e+06 1.5104e+06
10232.8 5.6628e+06 5.6586e+06 5.6670e+06
10395.5 1.7751e+06 1.7661e+06 1.7841e+06
12743.6 1.3335e+06 1.3303e+06 1.3366e+06
12876.9 5.6054e+05 5.5828e+05 5.6281e+05
14208.4 5.3425e+06 5.3382e+06 5.3467e+06
16122.6 1.2447e+06 1.2410e+06 1.2483e+06
16368.3 1.2426e+06 1.2345e+06 1.2507e+06
20364.4 4.2334e+05 4.1748e+05 4.2936e+05
21413.3 8.0393e+06 7.9669e+06 8.1131e+06
23627.2 3.5157e+06 3.4930e+06 3.5387e+06
24056.0 1.2755e+06 1.2481e+06 1.3041e+06
24796.0 1.0108e+06 1.0054e+06 1.0162e+06
27207.0 7.1155e+06 7.0025e+06 7.2323e+06
28942.4 2.1872e+06 2.1597e+06 2.2154e+06
29051.0 1.7084e+06 1.6660e+06 1.7531e+06
31093.6 6.3519e+05 6.2958e+05 6.4090e+05
2016-12-1 C
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1111.6 5.6533e+06 5.6500e+06 5.6566e+06
2549.9 2.6212e+06 2.6202e+06 2.6223e+06
2559.0 2.1495e+06 2.0914e+06 2.2109e+06
4441.9 2.2212e+06 2.2200e+06 2.2224e+06
6777.6 1.8851e+06 1.8847e+06 1.8855e+06
6789.0 8.3315e+06 8.3301e+06 8.3330e+06
6858.0 9.6935e+05 9.6913e+05 9.6957e+05
9547.6 1.5145e+06 1.5142e+06 1.5148e+06
10232.7 5.8532e+06 5.8516e+06 5.8549e+06
10395.3 1.7902e+06 1.7892e+06 1.7912e+06
12743.3 1.3459e+06 1.3452e+06 1.3465e+06
12876.7 5.7790e+05 5.7717e+05 5.7863e+05
14208.1 5.3736e+06 5.3686e+06 5.3786e+06
16122.2 1.3398e+06 1.3364e+06 1.3433e+06
16368.0 1.2740e+06 1.2713e+06 1.2767e+06
21412.7 8.0909e+06 8.0738e+06 8.1080e+06
23626.7 3.5651e+06 3.5395e+06 3.5909e+06
24795.2 1.0188e+06 1.0092e+06 1.0285e+06
28941.6 2.2120e+06 2.1966e+06 2.2277e+06
|
|
218
|
Wed Nov 30 10:02:20 2016 |
Gabriele | General | Measurements | MIT sample 4 (disk with 3 1"/0.1mm glued blanks) |
2016-11-30
 
- 9:57am, in chamber, balanced, glued balnks facing down
- 9:59am, roughing pump on
- 10:09am, turbo pump on
- Excitations
-
Quiet time before excitation: 1164570059
Excitation (broad band) at 1164570091 (60 s)
Quiet time after excitation: 1164570153
-
Quiet time before excitation: 1164571983
Excitation (broad band) at 1164572015 (60 s)
Quiet time after excitation: 1164572077
-
Quiet time before excitation: 1164573907
Excitation (broad band) at 1164573939 (60 s)
Quiet time after excitation: 1164574001
-
Quiet time before excitation: 1164575831
Excitation (broad band) at 1164575863 (60 s)
Quiet time after excitation: 1164575925
-
3:34pm, pumps off
Results
2016-11-30 A
 
% Freq Q1 Q2
329.0 8.3663e+04 8.3663e+04
764.8 6.6913e+04 6.6913e+04
1093.6 7.4978e+04 7.4978e+04
1173.2 4.7789e+04 4.7789e+04
1333.5 5.8904e+04 5.8904e+04
1529.0 6.9659e+04 6.9659e+04
1597.4 1.0552e+05 1.0552e+05
1748.0 4.8237e+04 4.8237e+04
2007.8 3.8014e+04 3.8014e+04
2017.3 6.4686e+04 6.4686e+04
2066.8 4.6047e+04 4.6047e+04
2077.3 5.7698e+04 5.7698e+04
2832.1 4.1680e+04 4.1680e+04
2850.9 6.3764e+04 6.3764e+04
3101.5 2.6027e+04 2.6027e+04
3468.7 1.9827e+04 1.9827e+04
3784.7 3.5492e+04 3.5492e+04
4301.1 3.6826e+04 3.6826e+04
4822.6 6.6123e+04 6.6123e+04
4834.9 4.6789e+04 4.6789e+04
6014.6 6.6507e+04 6.6507e+04
2016-11-30 B
 
% Freq Q
328.8 8.5064e+04
764.6 6.7065e+04
1093.6 6.4289e+04
1173.2 4.7921e+04
1333.5 5.8311e+04
1529.0 6.4720e+04
1597.4 1.5015e+05
1748.4 4.2924e+04
2007.7 4.1694e+04
2017.4 6.3609e+04
2067.0 4.6240e+04
2077.2 5.8395e+04
2406.0 4.5908e+04
2832.1 4.5323e+04
2851.0 6.4089e+04
3101.5 2.9677e+04
3468.7 1.6697e+04
3784.5 2.1703e+04
4299.7 3.7688e+04
4835.1 4.6841e+04
5659.7 3.4913e+04
2016-11-30 C
 
% Freq Q
329.1 8.3839e+04
658.0 8.6457e+04
764.6 6.6619e+04
1093.7 7.3246e+04
1163.3 2.7214e+04
1172.5 4.1708e+04
1333.7 5.9429e+04
1597.4 1.4036e+05
1748.0 2.8271e+04
2007.8 4.7532e+04
2017.4 6.5563e+04
2067.0 4.5528e+04
2077.2 5.8753e+04
2346.0 3.4762e+04
2832.1 3.9431e+04
2851.1 6.4498e+04
3101.5 3.0334e+04
3469.0 1.6427e+04
3784.7 5.0161e+04
4299.8 4.0081e+04
4835.2 5.3962e+04
4860.0 5.4326e+04
5659.8 3.5224e+04
6015.4 4.6382e+04
8739.5 4.7841e+04
|
| Attachment 2: 2016-11-30_09.57.45.jpg
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|
|
217
|
Tue Nov 29 17:06:13 2016 |
Gabriele | Electronics | Configuration | Changed whitening filters of four more boards |
I modified four more QPD boards to implement the new whitening filters detailed in elog 207. |
|
216
|
Tue Nov 29 17:02:06 2016 |
Gabriele | Facility | Noise hunting | Suspending the roughing pump |
I suspended the roughing pump with four springs. The reduction of the 58 Hz peak is similar to what I got when the pump was sitting on a box. So most of the coupling is due to acousting noise.
 
|
| Attachment 1: 2016-11-29_11.08.17.jpg
|
|
|
215
|
Tue Nov 29 16:42:51 2016 |
Gabriele | General | Measurements | MIT sample 3 (disk with 4 0.5"/0.125" glued blanks) |
2016-11-29
 
- 4:40pm, in chamber, blanks facing down
- 4:41pm, roughing pump on
- 4:53pm, turbo pump on
- Injections:
-
Quiet time before excitation: 1164516798
Excitation (broad band) at 1164516830 (60 s)
Quiet time after excitation: 1164516892
-
Quiet time before excitation: 1164518722
Excitation (broad band) at 1164518754 (60 s)
Quiet time after excitation: 1164518816
-
Quiet time before excitation: 1164520646
Excitation (broad band) at 1164520678 (60 s)
Quiet time after excitation: 1164520740
-
Quiet time before excitation: 1164522570
Excitation (broad band) at 1164522602 (60 s)
Quiet time after excitation: 1164522664
-
Quiet time before excitation: 1164524494
Excitation (broad band) at 1164524526 (60 s)
Quiet time after excitation: 1164524588
-
Quiet time before excitation: 1164526419
Excitation (broad band) at 1164526451 (60 s)
Quiet time after excitation: 1164526513
2016-11-30
Results
2016-11-29 A
 
% Freq Q1 Q2
251.9 2.8630e+04 2.8630e+04
270.6 4.3984e+04 4.3984e+04
329.0 5.2792e+04 5.2792e+04
387.4 6.4408e+04 6.4408e+04
692.9 2.1202e+04 2.1202e+04
705.5 2.7294e+04 2.7294e+04
1121.5 1.9490e+04 1.9490e+04
1127.2 2.3102e+04 2.3102e+04
1242.2 1.6168e+04 1.6168e+04
1318.1 2.5395e+04 2.5395e+04
1800.6 2.3235e+04 2.3235e+04
2124.1 1.8960e+04 1.8960e+04
2797.5 9.8183e+03 9.8183e+03
2841.8 1.1002e+04 1.1002e+04
2921.3 1.2820e+04 1.2820e+04
2959.7 7.8878e+03 7.8878e+03
3701.0 8.0007e+03 8.0007e+03
3839.4 1.3538e+04 1.3538e+04
4692.3 3.4420e+04 3.4420e+04
2016-11-29 B
 
% Freq Q1 Q2
251.9 2.6513e+04 2.6513e+04
329.0 5.4964e+04 5.4964e+04
387.0 5.9983e+04 5.9983e+04
692.9 2.4150e+04 2.4150e+04
705.4 2.7301e+04 2.7301e+04
1127.3 1.8674e+04 1.8674e+04
1242.1 1.2792e+04 1.2792e+04
1318.1 2.4187e+04 2.4187e+04
1800.7 2.2498e+04 2.2498e+04
2124.2 1.8534e+04 1.8534e+04
2797.5 9.8734e+03 9.8734e+03
2841.6 1.2921e+04 1.2921e+04
2959.8 1.0940e+04 1.0940e+04
3400.4 1.5128e+04 1.5128e+04
3700.7 1.0732e+04 1.0732e+04
4692.2 4.3243e+04 4.3243e+04
2016-11-29 C
 
% Freq Q1 Q2
251.6 2.8079e+04 2.8079e+04
271.0 4.1437e+04 4.1437e+04
329.0 5.4328e+04 5.4328e+04
387.4 5.8614e+04 5.8614e+04
692.8 2.2689e+04 2.2689e+04
705.5 2.8442e+04 2.8442e+04
1127.2 1.8216e+04 1.8216e+04
1242.0 1.8455e+04 1.8455e+04
1317.8 2.3628e+04 2.3628e+04
1800.6 2.2896e+04 2.2896e+04
2124.2 1.8450e+04 1.8450e+04
2797.7 1.0904e+04 1.0904e+04
2841.8 1.4721e+04 1.4721e+04
2921.4 1.0612e+04 1.0612e+04
2959.8 1.0875e+04 1.0875e+04
3700.7 1.1009e+04 1.1009e+04
3705.3 1.0344e+04 1.0344e+04
3839.3 1.3205e+04 1.3205e+04
4110.4 1.3077e+04 1.3077e+04
4692.3 4.8605e+04 4.8605e+04
|
| Attachment 5: results_2016_11_29a.png
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|
| Attachment 9: results_2016_11_29b.png
|
|
|
214
|
Tue Nov 29 11:26:46 2016 |
Gabriele | General | Measurements | MIT sample 2 (disk with 4 1"/0.1mm glued blanks) |
2016-11-19
 
- 11:24am, in chamber, balanced. Installed with the four glued blanks facing down
- 11:25am, roughing pump on
- 11:35am, turbo pump on
- Excitations
-
~2:40pm, Roughing pump off
-
Reduced excitation amplitude by a factor 2
-
Increased excitation back to original value
-
Quiet time before excitation: 1164497423
Excitation (broad band) at 1164497455 (60 s)
Quiet time after excitation: 1164497517
-
Quiet time before excitation: 1164498267
Excitation (broad band) at 1164498300 (60 s)
Quiet time after excitation: 1164498362
-
Quiet time before excitation: 1164499112
Excitation (broad band) at 1164499144 (60 s)
Quiet time after excitation: 1164499206
- 4:01pm, turbo pump off
Results
2016-11-28 B
 
% Freq Q1 Q2
329.0 8.4824e+04 8.4824e+04
335.7 1.4025e+05 1.4025e+05
440.4 9.8646e+03 9.8646e+03
497.0 9.0449e+03 9.0449e+03
776.2 9.3536e+04 9.3536e+04
1112.1 7.1969e+03 7.1969e+03
1350.2 8.7756e+04 8.7756e+04
1358.5 7.4121e+04 7.4121e+04
1552.4 1.8858e+04 1.8858e+04
1609.0 3.3215e+04 3.3215e+04
1784.0 1.1629e+04 1.1629e+04
1798.6 2.0767e+04 2.0767e+04
1888.4 1.7837e+04 1.7837e+04
1945.0 3.3859e+04 3.3859e+04
2030.0 1.0957e+04 1.0957e+04
2050.5 7.5373e+04 7.5373e+04
2080.0 8.8890e+04 8.8890e+04
2134.5 1.1641e+04 1.1641e+04
2416.0 2.1993e+04 2.1993e+04
2470.5 2.7733e+04 2.7733e+04
2520.0 2.2354e+04 2.2354e+04
2527.0 4.5688e+04 4.5688e+04
2856.0 2.0405e+04 2.0405e+04
2874.4 5.1657e+04 5.1657e+04
3192.0 4.0038e+04 4.0038e+04
3438.0 2.4531e+04 2.4531e+04
3528.0 4.3625e+04 4.3625e+04
3810.3 8.4299e+04 8.4299e+04
3812.7 8.4331e+04 8.4331e+04
4214.0 4.5810e+04 4.5810e+04
4379.8 1.2693e+05 1.2693e+05
4550.5 4.2404e+04 4.2404e+04
4867.4 8.2873e+04 8.2873e+04
4870.5 7.8134e+04 7.8134e+04
2016-11-28 D
 
% Freq Q1 Q2
335.6 1.4056e+05 1.4056e+05
672.0 1.5677e+05 1.5677e+05
777.6 9.2059e+04 9.2059e+04
1112.7 1.0553e+05 1.0553e+05
1203.1 5.5487e+04 5.5487e+04
1350.1 8.4536e+04 8.4536e+04
1358.4 7.1777e+04 7.1777e+04
1714.6 7.2616e+04 7.2616e+04
2050.5 7.6493e+04 7.6493e+04
2080.0 8.7699e+04 8.7699e+04
2098.0 9.7959e+04 9.7959e+04
2416.0 1.0540e+05 1.0540e+05
2874.4 5.6525e+04 5.6525e+04
3128.9 2.3520e+04 2.3520e+04
3134.3 2.0219e+04 2.0219e+04
3810.5 8.7060e+04 8.7060e+04
3812.5 8.7089e+04 8.7089e+04
4323.4 5.2924e+04 5.2924e+04
4379.8 1.2308e+05 1.2308e+05
4867.1 8.1170e+04 8.1170e+04
4870.4 8.9835e+04 8.9835e+04
5704.3 6.9120e+04 6.9120e+04
5728.4 6.6924e+04 6.6924e+04
6033.9 7.5637e+04 7.5637e+04
6036.0 8.0112e+04 8.0112e+04
7204.0 1.0233e+05 1.0233e+05
8625.9 1.4731e+05 1.4731e+05
|
| Attachment 2: 2016-11-29_11.17.13.jpg
|
|
| Attachment 6: results_2016_11_28b.png
|
|
| Attachment 10: results_2016_11_28d.png
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|
|
213
|
Mon Nov 28 16:02:16 2016 |
Gabriele | General | General | Expected frequencies for the MIT samples |
| Disk |
3 x 1"/0.1mm |
4 x 1"/0.1mm |
4 x 1"/0.125" |
| 306 |
319 |
322 |
243 |
| 306 |
319 |
324 |
319 |
| 464 |
480 |
487 |
447 |
| 703 |
739 |
751 |
679 |
| 703 |
743 |
751 |
679 |
| 1082 |
1140 |
1163 |
1101 |
| 1082 |
1140 |
1163 |
1101 |
| 1225 |
1288 |
1306 |
1211 |
| 1225 |
1288 |
1314 |
1283 |
| 1869 |
1941 |
1985 |
1750 |
| 1869 |
1941 |
1985 |
1904 |
| 1883 |
2003 |
2011 |
1904 |
| 1883 |
2003 |
2032 |
2017 |
| 2034 |
2155 |
2203 |
2065 |
| 2633 |
2731 |
2783 |
2759 |
| 2633 |
2745 |
2783 |
2784 |
| 2843 |
2986 |
3029 |
2877 |
| 2843 |
3006 |
3029 |
2877 |
| 3176 |
3325 |
3394 |
3307 |
| 3176 |
3325 |
3394 |
3307 |
| 3515 |
3645 |
3694 |
3629 |
| 3515 |
3645 |
3694 |
3630 |
| 3953 |
4152 |
4197 |
3673 |
| 3953 |
4152 |
4216 |
4001 |
| 4491 |
4655 |
4695 |
4560 |
| 4491 |
4655 |
4717 |
4673 |
| 4514 |
4697 |
4719 |
4739 |
| 4514 |
4697 |
4828 |
5132 |
| 4660 |
4814 |
4896 |
5301 |
| 5205 |
5463 |
5538 |
5302 |
| 5205 |
5463 |
5538 |
5350 |
| 5628 |
5793 |
5854 |
5849 |
| 5628 |
5795 |
5854 |
5849 |
| 5970 |
6208 |
6290 |
6088 |
|
|
212
|
Mon Nov 28 15:06:09 2016 |
Gabriele | General | Measurements | MIT sample 1 (bare disk) |
2016-11-28
- 3:00pm: removed the retaining ring and the alignment pins
- 3:05pm, 100mm/0.5mm disk installed, balanced
- 3:06pm, roughing pump on
- 3:19pm, turbo pump on
- Excitations:
- quiet time before 1164414276
band pass 100-3000 Hz, amplitude 3 x 2 kV, 60 seconds
quiet time after 1164414439
-
Quiet time before excitation: 1164426582
Excitation (broad band) at 1164426615 (60 s)
Quiet time after excitation: 1164426677
-
Quiet time before excitation: 1164437507
Excitation (broad band) at 1164437539 (60 s)
Quiet time after excitation: 1164437601
-
Quiet time before excitation: 1164448433
Excitation (broad band) at 1164448465 (60 s)
Quiet time after excitation: 1164448527
2016-11-29
Results
2016-11-28 A
 
% Freq Q1 Q2
315.9 2.8096e+06 2.8096e+06
726.7 1.8635e+06 1.8635e+06
1265.9 1.4194e+06 1.4029e+06
1930.4 1.1427e+06 1.1427e+06
1945.3 3.8068e+06 3.8068e+06
2717.9 9.7820e+05 9.6825e+05
2937.1 2.9339e+06 2.8810e+06
3626.4 8.4222e+05 8.4139e+05
4082.7 2.4345e+06 2.3090e+06
4638.8 5.2362e+06 5.1759e+06
4654.2 7.4042e+05 7.4042e+05
5374.9 1.9928e+06 1.9928e+06
5800.3 6.7081e+05 6.6269e+05
6164.3 4.0627e+06 3.8329e+06
6808.9 1.8131e+06 1.7073e+06
7063.0 6.2208e+05 6.2066e+05
7849.1 3.0518e+06 3.0518e+06
8381.5 1.6107e+06 1.6105e+06
10089.4 1.3860e+06 1.3793e+06
10476.0 4.6551e+06 4.6551e+06
12692.5 3.7473e+06 3.7473e+06
2016-11-28 B
 
% Freq Q1 Q2
316.2 2.9559e+06 2.9559e+06
726.7 1.9471e+06 1.9471e+06
1265.9 1.4767e+06 1.4596e+06
1324.0 1.7317e+06 1.7317e+06
1930.3 1.1866e+06 1.1826e+06
1945.2 3.8606e+06 3.8606e+06
2247.0 1.2821e+06 1.2442e+06
2717.8 1.0111e+06 9.8894e+05
2936.9 2.9926e+06 2.9494e+06
3626.2 8.6881e+05 8.6809e+05
4082.4 2.4804e+06 2.3513e+06
4638.7 5.2732e+06 5.1865e+06
4654.1 7.6228e+05 7.6228e+05
5374.6 2.0240e+06 2.0240e+06
5800.0 6.8894e+05 6.7200e+05
6164.1 3.9378e+06 3.9270e+06
6808.7 1.8616e+06 1.7343e+06
7062.7 6.2617e+05 6.2617e+05
7849.0 3.1323e+06 3.1323e+06
8381.2 1.6487e+06 1.5110e+06
8419.4 6.2761e+06 6.0088e+06
9687.4 2.6263e+06 2.6263e+06
10088.7 1.4209e+06 1.4209e+06
10475.5 4.5819e+06 3.9452e+06
11929.4 2.0706e+06 8.4521e+05
13900.0 1.1087e+06 1.1087e+06
2016-11-29 C
 
% Freq Q1 Q2
316.1 3.0133e+06 3.0133e+06
726.7 1.9621e+06 1.9621e+06
1265.8 1.4754e+06 1.4754e+06
1324.0 1.5486e+06 1.5486e+06
1930.3 1.1968e+06 1.1968e+06
1945.2 3.8326e+06 3.8326e+06
2717.8 1.0236e+06 9.9498e+05
2937.0 3.0102e+06 2.9815e+06
3626.2 8.7624e+05 8.7624e+05
4082.3 2.4965e+06 2.3709e+06
4638.6 5.2551e+06 5.2551e+06
4654.0 7.6848e+05 7.6176e+05
5374.4 2.0713e+06 2.0713e+06
6164.0 4.6657e+06 4.6657e+06
6808.7 1.8860e+06 1.7018e+06
8381.1 1.6553e+06 1.6553e+06
8419.0 6.3696e+06 6.3696e+06
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|
211
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Mon Nov 28 10:35:54 2016 |
Gabriele | General | Measurements | S1600484 |
2016-11-28
- 10:25am, optical setup realigned to horizontal reference
- 10:35am, in chamber, balanced
- 10:40am, roughing pump on
- 10:52am, turbo pump on
- Excitations
-
Quiet time before excitation: 1164400002
Excitation (broad band) at 1164400035 (60 s)
Quiet time after excitation: 1164400097
-
Quiet time before excitation: 1164401563
Excitation (broad band) at 1164401595 (60 s)
Quiet time after excitation: 1164401657
-
2:22pm, pumps off
Results
2016-11-28 A
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1108.2 2.1286e+06 2.1260e+06 2.1311e+06
1128.2 1.4002e+06 1.3985e+06 1.4019e+06
2541.1 4.4285e+05 4.4093e+05 4.4478e+05
4425.7 1.0825e+06 1.0822e+06 1.0827e+06
4491.8 1.7184e+05 1.7171e+05 1.7197e+05
6751.2 7.5249e+05 7.5201e+05 7.5298e+05
6767.2 9.1922e+06 9.1856e+06 9.1989e+06
6828.1 7.0851e+05 7.0832e+05 7.0870e+05
6892.4 9.0766e+04 8.9716e+04 9.1840e+04
9508.3 6.6234e+05 6.6198e+05 6.6269e+05
10200.6 2.6975e+06 2.6967e+06 2.6982e+06
10354.1 1.3746e+06 1.3722e+06 1.3771e+06
12687.9 5.2322e+05 5.2266e+05 5.2378e+05
12814.7 2.1385e+05 2.0733e+05 2.2078e+05
14162.0 2.4004e+06 2.3937e+06 2.4071e+06
16066.5 8.3368e+05 8.2756e+05 8.3989e+05
16080.9 4.6121e+06 4.6067e+06 4.6174e+06
16292.8 4.4889e+05 4.4768e+05 4.5011e+05
18623.2 1.1736e+06 1.1720e+06 1.1753e+06
20216.5 3.1139e+05 3.0998e+05 3.1281e+05
20269.5 3.9574e+05 3.9231e+05 3.9923e+05
21341.7 3.5609e+06 3.5503e+06 3.5716e+06
23548.5 1.0547e+06 1.0459e+06 1.0636e+06
24675.0 4.8722e+05 4.8369e+05 4.9081e+05
27114.5 3.2593e+06 3.2316e+06 3.2876e+06
28847.0 6.4298e+05 6.3580e+05 6.5031e+05
29042.8 9.0053e+06 8.9598e+06 9.0514e+06
29541.5 3.0418e+05 3.0008e+05 3.0840e+05
2016-11-28 B
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1108.0 2.2446e+06 2.2430e+06 2.2461e+06
1128.0 1.4273e+06 1.4259e+06 1.4287e+06
2541.1 5.5421e+05 5.5231e+05 5.5613e+05
4425.7 1.1296e+06 1.1292e+06 1.1300e+06
4491.7 1.7340e+05 1.7315e+05 1.7364e+05
6751.2 7.9555e+05 7.9513e+05 7.9598e+05
6828.1 7.2886e+05 7.2829e+05 7.2944e+05
6892.3 9.0531e+04 8.9920e+04 9.1150e+04
9508.4 6.8801e+05 6.8618e+05 6.8985e+05
10200.6 2.8353e+06 2.8293e+06 2.8413e+06
10354.2 1.3806e+06 1.3748e+06 1.3865e+06
12687.9 5.4251e+05 5.4151e+05 5.4351e+05
14162.1 2.5067e+06 2.5040e+06 2.5094e+06
16066.6 8.5525e+05 8.5256e+05 8.5796e+05
16081.0 4.7931e+06 4.7882e+06 4.7979e+06
16292.8 4.7076e+05 4.7014e+05 4.7138e+05
18623.3 1.1982e+06 1.1952e+06 1.2012e+06
20216.7 3.2637e+05 3.2410e+05 3.2868e+05
20270.0 4.0768e+05 4.0103e+05 4.1455e+05
21341.9 3.7598e+06 3.7510e+06 3.7686e+06
24675.0 4.9703e+05 4.9246e+05 5.0169e+05
27115.0 3.3173e+06 3.2448e+06 3.3930e+06
28846.8 6.8259e+05 6.7698e+05 6.8830e+05
29043.0 9.1345e+06 9.1187e+06 9.1503e+06
29541.6 3.1186e+05 3.0790e+05 3.1591e+05
32140.0 2.7203e+06 2.6578e+06 2.7857e+06
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|
210
|
Wed Nov 23 14:16:59 2016 |
Alena | General | General | Microscope inspection |
Microscope inspection of samples:
S1600487 https://dcc.ligo.org/S1600487-v7
S1600438 https://dcc.ligo.org/S1600438
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|
209
|
Wed Nov 23 08:55:41 2016 |
Gabriele | General | Noise hunting | "Advanced" vibration isolation |
In normal conditions the RMS of the QPD signals is dominated by the 58 Hz line generated by the roughing pump. Also, when the modes are excited, they exhibit large sidebands at +- 58 Hz that are an annoyance for the analysis.
I improved a bit the level of the 58 Hz in the QPD signals by putting the roughing pump on top of a "Very Useful Box":
 
Despite the fact that this advanced vibration isolation is already a little bit effective, it might be good to try to build some better suspension and maybe add an acoustic isolation around the pump. |
|
208
|
Tue Nov 22 14:11:38 2016 |
Gabriele | General | Measurements | Laser polishing of bad disk improves Q, but they're still not very good |
Laser polishing of a sample from the second batch (S1600487, bad Q as out of the box) improves the Q values, but they're still lower than what we got with a good sample (S1600439, first batch)
|
| Attachment 1: polishing_Qs.png
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207
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Tue Nov 22 08:21:35 2016 |
Gabriele | Electronics | Characterization | ADC saturation |
Last night measurements didn't work well: even without exciting the modes, the ADC was saturating because of the low frequency signal, particularly a 58 Hz peak:
 
When the modes were rang up, thing got clearly even worse:
 
Modification of whitening filter
So I modified the whitening filter, changing C6 from 2.2u to 220nF. The old and new whitening filters are shown below. We have the same amount of whitening at high frequency, but less amplification of the junk at ~50-100 Hz
With this modification, there's no more saturation, even when the modes are excited.
  
|
| Attachment 1: saturation_1.png
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|
| Attachment 2: saturation_2.png
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|
|
206
|
Mon Nov 21 16:37:01 2016 |
Gabriele | General | Measurements | S1600487 post polishing |
2016-11-21
- 4:34pm, in chamber, balanced
- 4:35pm, roughing pump on
- 4:45pm, turbo pump on
- Excitations
-
Quiet time before excitation: 1163826122
Excitation (1100 Hz) at 1163826154 (60 s)
Excitation (broad band) at 1163826216 (60 s)
Quiet time after excitation: 1163826278
-
Quiet time before excitation: 1163840708
Excitation (1100 Hz) at 1163840740 (60 s)
Excitation (broad band) at 1163840803 (60 s)
Quiet time after excitation: 1163840865
-
Quiet time before excitation: 1163855295
Excitation (1100 Hz) at 1163855328 (60 s)
Excitation (broad band) at 1163855391 (60 s)
Quiet time after excitation: 1163855453
2016-11-22
- Excitations
-
Quiet time before excitation: 1163873594
Excitation (1100 Hz) at 1163873626 (60 s)
Excitation (broad band) at 1163873688 (60 s)
Quiet time after excitation: 1163873750
-
Quiet time before excitation: 1163880980
Excitation (1100 Hz) at 1163881012 (60 s)
Excitation (broad band) at 1163881075 (60 s)
Quiet time after excitation: 1163881137
-
2:55pm pumps off
Results
2016-11-22 A
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1070.1 1.9388e+06 1.9315e+06 1.9462e+06
2531.5 1.3892e+07 1.3883e+07 1.3900e+07
2569.8 5.3460e+05 5.3416e+05 5.3504e+05
4398.1 5.0525e+06 5.0514e+06 5.0536e+06
6668.6 1.0221e+07 1.0215e+07 1.0226e+07
6698.2 9.2235e+06 9.2214e+06 9.2255e+06
6765.6 2.1925e+06 2.1912e+06 2.1937e+06
6793.6 1.3792e+05 1.3779e+05 1.3805e+05
9423.3 1.1806e+07 1.1804e+07 1.1808e+07
10062.8 6.9247e+06 6.9231e+06 6.9263e+06
10211.2 1.6982e+06 1.6970e+06 1.6994e+06
11431.5 9.9092e+04 9.8081e+04 1.0012e+05
12563.6 6.3580e+06 6.3337e+06 6.3826e+06
12675.7 3.0024e+05 2.9935e+05 3.0113e+05
13979.2 3.2738e+06 3.2702e+06 3.2773e+06
15862.0 1.0955e+07 1.0911e+07 1.1000e+07
15880.4 9.6743e+06 9.6714e+06 9.6772e+06
16118.9 7.7139e+06 7.7110e+06 7.7168e+06
18553.9 1.1010e+06 1.0951e+06 1.1070e+06
20323.0 2.9024e+06 2.8472e+06 2.9598e+06
21057.3 7.9677e+06 7.9231e+06 8.0129e+06
23260.9 6.3371e+06 6.3239e+06 6.3504e+06
24388.9 6.7833e+06 6.7652e+06 6.8014e+06
24763.0 3.1798e+06 3.1575e+06 3.2026e+06
26153.1 2.9557e+06 2.9440e+06 2.9676e+06
26167.4 4.4583e+06 4.4341e+06 4.4828e+06
26762.0 7.5887e+06 7.4226e+06 7.7623e+06
28598.1 6.4998e+06 6.4935e+06 6.5061e+06
29164.0 3.7171e+05 3.6012e+05 3.8407e+05
29985.5 6.7660e+06 6.7237e+06 6.8089e+06
30887.9 4.2386e+06 4.1974e+06 4.2807e+06
31630.0 2.9121e+06 2.9023e+06 2.9220e+06
31660.0 7.7734e+06 7.7553e+06 7.7916e+06
32320.0 2.5640e+06 2.4872e+06 2.6458e+06
2016-11-22 B
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1070.0 2.0387e+06 2.0263e+06 2.0513e+06
2531.4 1.3095e+07 1.3084e+07 1.3107e+07
2569.9 5.4137e+05 5.4076e+05 5.4198e+05
2596.0 6.0664e+04 5.0205e+04 7.6618e+04
3270.0 2.3507e+06 2.2920e+06 2.4124e+06
3364.4 1.5727e+07 1.5284e+07 1.6197e+07
3640.4 1.2485e+07 1.1993e+07 1.3020e+07
4398.1 4.9792e+06 4.9778e+06 4.9807e+06
5230.7 5.8211e+06 5.6113e+06 6.0471e+06
5506.9 5.5310e+06 5.2327e+06 5.8654e+06
6668.9 1.0132e+07 1.0124e+07 1.0141e+07
6698.2 9.2026e+06 9.1993e+06 9.2059e+06
6765.6 2.1984e+06 2.1972e+06 2.1996e+06
6793.5 1.3816e+05 1.3724e+05 1.3910e+05
9423.3 1.1839e+07 1.1836e+07 1.1842e+07
10062.8 6.9932e+06 6.9775e+06 7.0089e+06
10211.3 1.8418e+06 1.7438e+06 1.9514e+06
11431.5 1.0026e+05 9.9033e+04 1.0151e+05
12563.7 6.2767e+06 6.2281e+06 6.3261e+06
12675.8 3.0511e+05 3.0130e+05 3.0901e+05
13979.3 3.2395e+06 3.2354e+06 3.2436e+06
15862.1 1.1013e+07 1.0999e+07 1.1027e+07
15880.5 9.7162e+06 9.7120e+06 9.7204e+06
16119.0 7.7387e+06 7.7348e+06 7.7427e+06
18553.9 1.1033e+06 1.0932e+06 1.1135e+06
20044.6 5.8909e+05 5.7146e+05 6.0784e+05
20322.7 2.9553e+06 2.9055e+06 3.0069e+06
21057.2 8.0593e+06 8.0366e+06 8.0822e+06
23261.1 6.4567e+06 6.4296e+06 6.4841e+06
24389.0 6.8069e+06 6.7931e+06 6.8209e+06
24762.4 3.1729e+06 3.1563e+06 3.1895e+06
26152.9 3.0129e+06 2.9516e+06 3.0767e+06
26762.4 7.5311e+06 7.4757e+06 7.5873e+06
28598.3 6.5290e+06 6.4709e+06 6.5881e+06
28658.3 9.6595e+06 9.5903e+06 9.7297e+06
29985.3 6.5466e+06 6.5024e+06 6.5914e+06
30887.8 4.2070e+06 4.1757e+06 4.2387e+06
31630.0 2.9536e+06 2.9435e+06 2.9638e+06
31659.7 7.7449e+06 7.7254e+06 7.7644e+06
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| Attachment 1: spectra.png
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205
|
Mon Nov 21 16:21:12 2016 |
Gabriele, Alastair | General | General | Laser polishing of S1600487 |
The sample has been laser polished this afternoon, 0.5mm/s, average power 23 W.
We moved the lens that focuses the beam about one inch toward the sample, to make the beam slightly larger. |
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204
|
Mon Nov 21 11:46:57 2016 |
Gabriele | General | General | Microscope inspection of 439 and 487 |
S1600439
This is the sample that was CO2 polished (198) and measured after polishing (197, 199). Unfortunately it got damaged during annealing:
I looked at the edge under the microscope. The first image is taken with light from above, and it shows a bit of residual defects in the center of the edge:
The images below are taken with light from below (which seems always the best choice) and they show some residual defects on the edge. Also, there is some "stuff" on the borders, like some fibers of some contamination. The first image is taken in correspondence of the damage, which is barely visible on the left edge. No clean problem is visible here.
  
S1600487
This is a sample as received from Mark Optics. I will measure its Q values, laser polish it, measure again and then anneal it. Here are some images of the edges for future reference. The last one in particular shows the transition from the round part to the flats. The surface quality is clearly different.
  
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203
|
Mon Nov 21 11:05:51 2016 |
Gabriele | General | Measurements | S1600487 |
Note: not annealed
2016-11-21
- 11:04am in chamber, balanced
- 11:05am roughing pump on
- 11:15am turbo pump on
- 12:49pm, excitation (2kV, 60 s), quiet time before: 1163796504, quiet time after 1163796645
- 1:44pm, excitation (2kV, 60s), quiet time before 1163799861, quiet time after 1163799969
- 2:35pm pumps off
Sample has been laser polished by Alastair and Gabriele.
Results
2016-11-21 A
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1092.0 2.0996e+06 2.0980e+06 2.1013e+06
2505.5 3.7980e+05 3.7943e+05 3.8017e+05
2544.1 1.9755e+04 1.9274e+04 2.0261e+04
4364.5 8.9303e+05 8.9272e+05 8.9334e+05
4426.6 2.0585e+05 2.0551e+05 2.0619e+05
6658.1 7.3829e+05 7.3655e+05 7.4004e+05
6673.2 3.5144e+06 3.4646e+06 3.5657e+06
6729.6 7.3540e+05 7.3412e+05 7.3668e+05
6791.9 1.4926e+05 1.4783e+05 1.5072e+05
9378.0 6.2587e+05 6.2453e+05 6.2722e+05
10060.0 1.8195e+06 1.8128e+06 1.8263e+06
10206.0 8.1387e+05 8.0392e+05 8.2406e+05
12514.4 5.1323e+05 5.0504e+05 5.2168e+05
15851.5 7.7288e+05 7.7105e+05 7.7471e+05
16069.0 5.1586e+05 5.0878e+05 5.2313e+05
21045.5 3.0229e+06 3.0036e+06 3.0425e+06
28565.0 5.7365e+05 5.3858e+05 6.1362e+05
30008.1 3.8168e+06 3.7090e+06 3.9310e+06
32597.0 1.2310e+06 1.1514e+06 1.3224e+06
2016-11-21 B
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1092.1 2.1370e+06 2.1351e+06 2.1389e+06
1110.8 1.2884e+06 1.2787e+06 1.2982e+06
2505.6 4.6204e+05 4.5453e+05 4.6981e+05
4364.6 9.0907e+05 9.0847e+05 9.0967e+05
4426.5 2.1117e+05 2.0306e+05 2.1996e+05
6658.2 7.3579e+05 7.3277e+05 7.3883e+05
6673.3 3.4406e+06 3.4108e+06 3.4709e+06
6729.6 7.3685e+05 7.3540e+05 7.3830e+05
6791.7 1.4679e+05 1.3208e+05 1.6520e+05
9377.9 6.4036e+05 6.2873e+05 6.5242e+05
10059.9 1.7966e+06 1.7905e+06 1.8028e+06
12514.4 6.2867e+05 3.7657e+05 1.9017e+06
15851.4 7.7502e+05 7.7177e+05 7.7829e+05
16068.5 5.2815e+05 5.0732e+05 5.5076e+05
21045.5 3.1520e+06 3.0746e+06 3.2334e+06
30008.2 3.6847e+06 3.6042e+06 3.7689e+06
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202
|
Sun Nov 20 14:40:14 2016 |
Gabriele | General | Measurements | S1600482 |
Note: marked as "scratched" by Alena
2016-11-20
- 2:38pm, in chamber, balanced
- 2:39pm roughing pump on
- 2:50pm, turbo pump on
- Excitations:
-
Quiet time before excitation: 1163731955
Excitation (1100 Hz) at 1163731988 (60 s)
Excitation (broad band) at 1163732051 (60 s)
Quiet time after excitation: 1163732113
-
Quiet time before excitation: 1163746543
Excitation (1100 Hz) at 1163746575 (60 s)
Excitation (broad band) at 1163746637 (60 s)
Quiet time after excitation: 1163746699
-
Quiet time before excitation: 1163761129
Excitation (1100 Hz) at 1163761161 (60 s)
Excitation (broad band) at 1163761223 (60 s)
Quiet time after excitation: 1163761285
2016-11-21
- ~8:50am Pumps off when the electricians switched off the power (to fix flooding in another lab).
Results
2016-11-20 A
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1105.6 1.3699e+07 1.3679e+07 1.3719e+07
1129.5 1.2592e+06 1.2582e+06 1.2602e+06
2536.9 6.9108e+06 6.9091e+06 6.9125e+06
2582.0 1.0950e+06 1.0945e+06 1.0954e+06
4419.5 4.6415e+06 4.6408e+06 4.6422e+06
6741.0 4.6109e+06 4.6085e+06 4.6133e+06
6751.5 7.3558e+06 7.3545e+06 7.3572e+06
6760.0 9.3303e+05 9.1696e+05 9.4966e+05
6817.9 8.8863e+05 8.8845e+05 8.8881e+05
6876.4 9.0884e+05 8.9493e+05 9.2320e+05
9501.3 2.1618e+06 2.1613e+06 2.1622e+06
10176.4 1.0854e+07 1.0851e+07 1.0857e+07
12682.4 2.2503e+06 2.2480e+06 2.2527e+06
14133.9 7.2804e+06 7.2779e+06 7.2829e+06
16033.5 5.5906e+06 5.5589e+06 5.6227e+06
16293.6 2.0220e+06 2.0213e+06 2.0226e+06
18591.1 5.6667e+06 5.6569e+06 5.6766e+06
20188.1 5.3541e+05 5.3539e+05 5.3542e+05
20260.5 1.2546e+06 1.2487e+06 1.2607e+06
21301.6 8.9899e+06 8.9852e+06 8.9945e+06
23507.9 6.7449e+06 6.7090e+06 6.7812e+06
23665.4 4.2237e+05 4.2236e+05 4.2237e+05
24674.0 1.7576e+06 1.7419e+06 1.7736e+06
27071.8 1.0639e+07 1.0601e+07 1.0679e+07
28778.0 4.4868e+06 4.4779e+06 4.4957e+06
28875.5 3.2816e+06 3.2506e+06 3.3131e+06
28971.4 1.3371e+07 1.3319e+07 1.3422e+07
29588.4 6.4932e+06 6.4563e+06 6.5304e+06
31309.6 1.3159e+06 1.3159e+06 1.3159e+06
32182.4 4.1484e+06 4.0890e+06 4.2095e+06
2016-11-20 B
 
 
% Freq Q Q (C.I. 95%) Q (C.I. 95%)
1106.0 1.3735e+07 1.3705e+07 1.3765e+07
1129.4 1.3461e+06 1.3447e+06 1.3475e+06
2536.9 6.9208e+06 6.9190e+06 6.9225e+06
2581.9 1.1022e+06 1.1018e+06 1.1027e+06
4419.5 4.6410e+06 4.6403e+06 4.6417e+06
6741.0 4.5896e+06 4.5529e+06 4.6269e+06
6751.5 7.3617e+06 7.3515e+06 7.3719e+06
6817.9 8.8718e+05 8.8685e+05 8.8752e+05
9501.3 2.0661e+06 2.0623e+06 2.0699e+06
10176.5 1.0802e+07 1.0799e+07 1.0806e+07
12682.5 2.2575e+06 2.2491e+06 2.2659e+06
14134.0 7.4453e+06 7.4405e+06 7.4502e+06
16032.3 3.4372e+06 3.4136e+06 3.4611e+06
16293.6 2.0186e+06 2.0172e+06 2.0200e+06
18591.1 5.5027e+06 5.4999e+06 5.5054e+06
20188.4 5.3252e+05 5.3251e+05 5.3254e+05
20260.5 1.2588e+06 1.2465e+06 1.2713e+06
21301.7 9.0170e+06 9.0118e+06 9.0222e+06
23507.9 6.6291e+06 6.6017e+06 6.6567e+06
23665.4 4.4613e+05 4.4612e+05 4.4614e+05
24220.0 1.9037e+06 1.9037e+06 1.9037e+06
24674.0 1.7636e+06 1.7466e+06 1.7809e+06
27071.8 1.0771e+07 1.0668e+07 1.0875e+07
28778.1 4.5042e+06 4.4886e+06 4.5200e+06
28875.5 3.3774e+06 3.3375e+06 3.4182e+06
28971.5 1.2966e+07 1.2933e+07 1.2999e+07
29588.4 6.3389e+06 6.2527e+06 6.4275e+06
31310.0 1.3706e+06 1.3706e+06 1.3706e+06
32182.1 4.6113e+06 4.5490e+06 4.6755e+06
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| Attachment 3: ringdowns.png
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201
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Fri Nov 18 15:48:09 2016 |
Gabriele | General | Measurements | Microscope 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
 
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| Attachment 9: S1600462_3.png
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200
|
Fri Nov 18 11:39:59 2016 |
Gabriele | General | Measurements | S1600480 |
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
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
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199
|
Fri Nov 18 09:27:26 2016 |
Gabriele | General | Measurements | CO2 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.
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198
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Thu Nov 17 17:59:44 2016 |
Gabriele, Alastair | General | General | CO2 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:
 
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197
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Thu Nov 17 17:54:13 2016 |
Gabriele | General | Measurements | S1600439 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
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
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196
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Thu Nov 17 12:08:28 2016 |
Gabriele | General | General | Remote 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.
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195
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Thu Nov 17 12:06:39 2016 |
Gabriele | General | Vacuum | Switching 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. |
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194
|
Thu Nov 17 09:35:51 2016 |
Gabriele | General | Measurements | S1600483 |
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
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193
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Wed Nov 16 15:57:21 2016 |
Gabriele | General | Measurements | S1600481 |
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
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
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192
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Wed Nov 16 09:43:25 2016 |
Gabriele, Alastair | General | Daily Progress | CO2 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
 
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| Attachment 2: 2016-11-15_16.35.14.jpg
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191
|
Wed Nov 16 09:35:59 2016 |
Gabriele | General | Measurements | S1600477 |
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
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190
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Tue Nov 15 16:46:48 2016 |
Gabriele | General | Measurements | S1600476 |
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
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
|
|
| Attachment 8: ringdowns.png
|
|
|
189
|
Tue Nov 15 10:35:11 2016 |
Gabriele | Mechanics | Daily Progress | Parts for laser polishing setup are here |
The parts all fit as expected. They're mounted on the stages.
  
|
|
188
|
Tue Nov 15 10:08:28 2016 |
Gabriele | General | Measurements | S1600475 |
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
|
|
187
|
Mon Nov 14 14:41:08 2016 |
Gabriele | General | Measurements | S1600474 |
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
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
|
|
|
186
|
Mon Nov 14 11:28:33 2016 |
Gabriele | General | Vacuum | Viton 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:
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|
185
|
Mon Nov 14 11:13:33 2016 |
Gabriele | General | Measurements | S1600467 |
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
|
|
184
|
Mon Nov 14 08:54:49 2016 |
Alena, Calum | General | General | Annealing run |
Annealing run (472-477) on 3" wafers - Crime 11/11/2016 https://dcc.ligo.org/T1600527 |
|
183
|
Sun Nov 13 19:12:56 2016 |
Gabriele | General | Measurements | S1600471 |
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
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
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| Attachment 3: ringdowns.png
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182
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Sun Nov 13 10:40:16 2016 |
Gabriele | General | Measurements | S1600469 |
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
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