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ID Date Author Type Category Subject Text   5011   Thu Jul 21 10:08:30 2011 steve Update SUS sus sensor summary OSEM voltages to be corrected at upcoming vent: threshold ~ 0.7-1.2V, ( at 22 out of 50 )      5010   Thu Jul 21 09:04:59 2011 valera, steve Update SUS oplev gains were not optimized   Hi Steve,   I did      5009   Wed Jul 20 23:31:44 2011 Suresh Update IOO MC Trans QPD is down   The mode cleaner is not locking because      5008   Wed Jul 20 22:16:27 2011 Ishwita, Manuel Update Electronics lying seismometer cable and plugging it We laid the cable along the cable keeper from the BACARDI seismometer to the rack 1X6, the excess cable has been coiled under      5007   Wed Jul 20 20:44:56 2011 Jamie Update SUS All sus models rebuilt and restarted There were a couple of recent improvements to the sus_single_control model that had not been propagated to all of the suspension      5006   Wed Jul 20 20:04:54 2011 Jamie Update CDS C1:DAQ-FB0_C1XXX_STATUS sometimes unexplainably goes red I have been noticing this happening occasionally, but I don't understand what is causing:      5005   Wed Jul 20 19:48:03 2011 Jamie Update SUS Re: oplev gains today    We have been modifying models that need to have their channels renamed      5004   Wed Jul 20 19:24:12 2011 rana Update SUS oplev gains today I guess Valera forgot to elog it. Steve, please email him and get the info. I started to check out the OL servos      5003   Wed Jul 20 18:44:54 2011 Koji Summary SUS Weekly Summary Find Frank and ask him about those components.      5002   Wed Jul 20 17:43:33 2011 suresh Update Computers restarted the frame builder I restarted the frame builder in the last 15mins.  I was making a change to a DAC channel      5001   Wed Jul 20 14:42:34 2011 steve Update SUS oplev gains today C1:SUS-ETMX_OLPIT_GAIN set to 1.0     OLYAW 1.0                      5000   Wed Jul 20 12:05:08 2011 Nicole Summary SUS Weekly Summary Since last week Wednesday, I have since found a Pomona Electronics      4999   Wed Jul 20 11:42:47 2011 Ishwita, Manuel Update   Weekly summary     We gave a white-board presentation on derivation of formula for optimum Wiener filter coefficients and wrote a latex document      4998   Wed Jul 20 11:13:59 2011 Larisa Thorne Update elog I restarted the ELOG as it seemed to have crashed        4997   Wed Jul 20 10:10:19 2011 Sonali Update Green Locking Weekly summary  I finished wih the set-up at the ETMY table. Instead of the neutral Density Filter , I put in a mirror(Y1-1037-45S)  which      4996   Wed Jul 20 06:52:01 2011 Suresh Update LSC ABSL - PSL beat lock The ABSL locking setup to the PSL is down.  According the plan, I started to use the IR beam dumped after the doubling crystal for the IR beat      4995   Wed Jul 20 06:36:39 2011 Suresh Update IOO WFS1 and 2 gains Gains of individual quadrants in both the WFS As a simple check of the gains on all the quadrants I hooked up the      4994   Wed Jul 20 06:17:04 2011 Suresh Update Green Locking Y-end green laser power issues The Y-end green beam power is 0.47 mW. While aligning the Y-end aux laser light into the fiber we noticed that the green power out      4993   Tue Jul 19 23:39:11 2011 Jamie, Jenne Update LSC Major overhaul of LSC rack; binary switching of whitening filters now working Yesterday we started going through the LSC binary whitening switching to make sure the new switching control in the LSC model      4992   Tue Jul 19 21:05:55 2011 haixing Update DAQ choose the right relay Rana and I are working on the AA/AI circuit for Cymac. We need relays to bypass certain paths in the circuit, and we just found a      4991   Tue Jul 19 20:36:08 2011 rana Update Computers VirtualBox + Windows 7 on rossa I installed Virtual Box on rossa. Then I put Windows 7 in there and am now installing Altium.      4990   Tue Jul 19 13:45:22 2011 Suresh Update SAFETY Painful Voltage Regulator and Circuit-Testing Lessons There is should be a few IDC connectors in the lab (and some ribbon cable) using which you can proceed with the testing of      4989   Tue Jul 19 10:54:14 2011 steve Update General large sensor card can not be found Please return sensor card to  laser log box so others can use it. We have only one larger fluorescent sensor card.      4988   Tue Jul 19 10:18:24 2011 rana Update LSC Big ol' mess Remember, as per our marker board conversation, that the resistor noise as excitation method only works if      4987   Tue Jul 19 09:19:14 2011 steve Update SUS PRM damping restored The PRM watchdogs were tripped. The side was kicked up to 180mV Damping was restored.      4986   Mon Jul 18 22:26:43 2011 Nicole Update SAFETY Painful Voltage Regulator and Circuit-Testing Lessons Today I learned some important circuit-building lessons while      4985   Mon Jul 18 21:06:32 2011 PSL Table Guardian Omnistructure PSL Don't leave the PSL table open, unattended!!!!!!!!!!!!11111 I found the PSL table left open, and unattended again.       4984   Mon Jul 18 20:59:19 2011 Jenne Update LSC Big ol' mess [Jamie, Jenne] We decided to take on the deceptively easy-sounding task of checking that the LSC      4983   Mon Jul 18 15:51:04 2011 steve Update SUS ETMY spectra of oplev error signal        4982   Mon Jul 18 14:39:53 2011 Jenne Update Computers LSC PD chans acquired There's too much tromping around, so I'm not going to actually measure PRC length right now, but I did set some channels to      4981   Mon Jul 18 10:24:48 2011 steve HowTo General solvent bottles for cleaning optics Each bottle has matched seals. They are not interchangeable. It is critical that the solvent do      4980   Sun Jul 17 18:23:23 2011 Jenne Update PSL Found the PMC unlocked It was unlocked since ~4:30am.  No idea why.  It's relocked so I can try round N of measuring the PRC length.      4979   Sat Jul 16 18:54:05 2011 Ishwita, Manuel Configuration Electronics AA board We fixed the anti-aliasing board in its aluminum black box,  the box couldn't be covered entirely because of the outgoing      4978   Fri Jul 15 19:00:18 2011 dmass Metaphysics elog Crashes Elog crashed a couple times, restarted it a couple times.      4977   Fri Jul 15 17:42:21 2011 Sonali Update Green Locking PSL layout for superposition of the PSL,ETMX and ETMY beams. The fibres carrying the beams from the ETMX as well as the ETMY have been routed to the PSL table now.      4976   Fri Jul 15 16:14:00 2011 steve Update SUS BS oplev error signal spectra        4975   Fri Jul 15 14:29:30 2011 Nicole Summary SUS Photosensor Head Lessons    You      4974   Fri Jul 15 14:23:30 2011 Nicole Summary SUS Photosensor Head Lessons    Ah! I see! Thank      4973   Fri Jul 15 13:48:56 2011 sonali Update Green Locking Power of the AUX laser increased.                                4972   Fri Jul 15 09:25:02 2011 rana Update SUS SUS oplev spectras In addition to the OL quadrants, you need to plot the OPLEV_PERROR and OPLEV_YERROR signals since these are the real signals      4971   Fri Jul 15 08:48:36 2011 Jamie Summary SUS Photosensor Head Lessons Nicole: I thought we had decided to use teflon as the insulator between the PCB (yellow) and the LED/PDs?  I don't think you      4970   Fri Jul 15 01:11:21 2011 Koji Summary SUS Photosensor Head Lessons Rotate the PDs and the LED so that you can put them as close as possible. This is to increase the sensitivity      4969   Thu Jul 14 20:24:32 2011 Nicole Summary SUS Photosensor Head Lessons Today I tested the photosensor head combination (2 Hamamatsu      4968   Thu Jul 14 17:34:35 2011 Ishwita, Manuel HowTo WienerFiltering Wiener-Hopf equations Since we are using Wiener filtering in our project, we studied the derivation of Wiener-Hopf equations. Whatever we understood      4967   Thu Jul 14 15:27:08 2011 steve, Update SUS SUS oplev spectras                7x    4966   Thu Jul 14 09:38:50 2011 steve, Update SUS BS oplev spectra                    4965   Thu Jul 14 02:32:11 2011 sonali Update Green Locking Power of the AUX laser increased.                                4964   Wed Jul 13 12:24:46 2011 Nicole Update SUS Weekly Update This week,      4963   Tue Jul 12 17:30:24 2011 steve, Update SUS BS oplev spectra                                4962   Tue Jul 12 11:52:54 2011 Jamie, Suresh Update LSC LSC model updates The LSC model has been updated: Binary outputs to control whitening filter switching We now take the

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