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ID Date Author Type Category Subject Text   7425   Fri Sep 21 12:12:56 2012 Manasa Configuration PSL AOM installation     {Jan, Manasa} We installed the AOM driver back on the PSL table this morning. To calibrate      7464   Tue Oct 2 16:15:22 2012 Manasa Configuration PSL AOM installation                                7471   Wed Oct 3 16:52:16 2012 Manasa Configuration PSL AOM installation {Jan, Manasa} We set start to check the performance of the AOM on the PSL table. The AOM driver      7474   Wed Oct 3 23:36:54 2012 Koji Configuration PSL AOM installation After the AOM work the beam wasn't well aligned to the PMC. The PMC REFL CCD shows large misalignment in yaw.      7479   Thu Oct 4 17:54:59 2012 Manasa Configuration PSL AOM installation                                7480   Thu Oct 4 18:48:04 2012 janosch Configuration PSL AOM installation      7481   Thu Oct 4 20:57:43 2012 Manasa Configuration PSL AOM installation                                7482   Thu Oct 4 22:16:28 2012 Koji Configuration PSL AOM installation Do more investigation to understand what is causing the power reduction.      7483   Thu Oct 4 22:16:40 2012 Den Update PSL PMC is locked PZT monitor is not lying to us, I've measured it with a voltmeter. But PMC SERVO is still interesting. If I break the loop after PMCERR      7492   Fri Oct 5 14:53:29 2012 Jenne Update PSL TTFSS board not fully seated! [Den, Jenne] Den noticed that the -15V LED on the TTFSS board was not illuminated.       7494   Fri Oct 5 18:08:17 2012 Manasa Configuration PSL AOM installation                                7501   Mon Oct 8 11:15:53 2012 Jenne Update PSL PMC and FSS had a weird weekend Something bizarre-o was going on with the PMC and FSS over the weekend.  On the striptool, PMC's PZT looks like it was doing      7590   Mon Oct 22 21:20:36 2012 Jenne Update PSL Beam attenuation optics in place [Jenne, Raji (before dinner)] We put the beam attenuation optics in place.  Before putting any optics      7766   Fri Nov 30 11:38:35 2012 Steve Update PSL foil removed from enclosure Aluminum foil replaced by sheet metal on Enclosure and AP table.      7778   Mon Dec 3 17:04:12 2012 Ayaka Update PSL PMC calibration for MC_F calibration In order to calibrate MC_F signal, I need to know the calibration value from thorlab's PZT driver to laser frequency.      7779   Tue Dec 4 01:43:37 2012 rana Update PSL PMC calibration for MC_F calibration   If you can't find the PMC sidebands in the transmission, its because the SNR is too small.      7782   Tue Dec 4 11:30:36 2012 Zach Update PSL PMC calibration for MC_F calibration In order to have less unknown, you can calibrate the PMC PZT separately. Lock the PMC and take a transfer function from either      7810   Tue Dec 11 11:40:07 2012 Manasa, Ayaka Update PSL PMC drift [Manasa, Ayaka] I found that MC got unstable this morning. This is caused by the drift of PMC.      7811   Tue Dec 11 19:51:36 2012 Koji Update PSL PMC gain was too low / EPICS alerting value for PMC updated [Ayaka, Koji] Ayaka pointed out that the PMC has too low unity gain frequency. We checked      7823   Thu Dec 13 17:24:53 2012 Ayaka Update PSL PMC calibration for MC_F calibration  I calibrated MC_F signal into Hz/rtHz unit using the transfer function from MC_F to PMC feedback signal.  6x    7836   Fri Dec 14 17:12:19 2012 Evan Hall Update PSL PMC yaw tune-up (from Wednesday night) Wednesday night, there was ~0.4 V on the PMC transmission PD. I adjusted the steering mirrors into the PMC and got the transmission      7895   Mon Jan 14 09:08:37 2013 Steve Update PSL PMC is only ok short term    The PMC PZT voltage slider seemed sticky.  First it would not do      7983   Fri Feb 1 12:34:55 2013 Jenne Update PSL Too much power injected into vacuum I noticed (while relocking the MC after Jamie and I zeroed the LSC offsets) that the MC refl power was 4.8 V.  Usually      8077   Wed Feb 13 16:31:08 2013 Jenne Update PSL PMC pitch input tuned, MC yaw input tuned [Jenne, Yuta] I looked at PMCR camera on the MC1 tv, and tweaked up the beam going into the      8130   Thu Feb 21 16:53:37 2013 Manasa Update PSL PSL shutter [Steve, Jenne, Yuta, Manasa] We have kept the laser ON at low power through the pump down process. As we      8263   Fri Mar 8 21:00:05 2013 Manasa Update PSL PMC fixed                                8264   Sat Mar 9 19:29:27 2013 Koji Update PSL Modulation depth Last night I measured the modulation depth of the MC incident beam. Method:      8421   Mon Apr 8 08:05:41 2013 Steve Update PSL PMC locked The PMC locked manually. MC  grabbed lock instantaniously      8422   Mon Apr 8 10:19:46 2013 Jenne Update PSL LSC left enabled    Note: The TRY PD isn't installed and normalized properly yet, so the IFO OVERVIEW      8424   Mon Apr 8 22:43:44 2013 rana Update PSL MC locking troubles: MC/FSS servo unstable The MC seemed to be losing lock recently quite a bit. I noticed that the PC Drive RMS signal was red.      8429   Tue Apr 9 07:48:10 2013 Steve Update PSL PMC locked                                8435   Wed Apr 10 07:37:33 2013 Steve Update PSL PMC locked                                8460   Thu Apr 18 02:51:52 2013 Den Update PSL FSS slow servo Today Rana pointed out that our FSS slow servo is malfunctioning. It has been for a while that our laser temperature control      8470   Mon Apr 22 12:03:58 2013 Koji Update PSL PMC aligned too PMC aligned. C1:PSL-PMC-PMCTRANSPD improved from 0.72ish to 0.835ish.      8542   Tue May 7 18:42:20 2013 Jamie Update PSL PMC not locking I'm just now realizing that the PMC has also not been locked since noon today, and doesn't seem to be responding to anything      8545   Tue May 7 20:09:10 2013 Jamie, Rana Update PSL PMC problem was FSS slow actuator Rana showed up and diagnosed the problem as a railed FSS SLOW output.  The SLOW Monitor about was showing ~6V, which is apparently      8546   Tue May 7 20:35:15 2013 rana Update PSL PSL database / screen maintenance     Fixed LOCKMC screen to display the SLOWM voltage instead of the ref cav transmission.     PSL Status .db      8689   Fri Jun 7 21:33:39 2013 Manasa Update PSL PSL green to Y- BEAT PD blocked To allow Annalisa to work on the Y-green alignment as I work with the X-green, the part of the PSL green beam that goes to the      9019   Fri Aug 16 19:36:49 2013 Charles Update PSL PMC_trans Channel Rana and I connected the PMC_trans output to the BNC connector board on the west end of the PSL table (the channel is labeled).      9094   Mon Sep 2 15:22:57 2013 Jenne Update PSL PMC relocked  The PMC was locked on an LG 10 mode (or something like it), for at least the last 8 hours.  I relocked it on the      9155   Tue Sep 24 10:55:45 2013 rana Update PSL PMC re-aligned After relocking the PMC at a good voltage, Steve and I re-aligned the beam into the PMC by walking the last two steering mirrors.      9252   Thu Oct 17 22:38:25 2013 Masayuki Update PSL PSL temperature changed [Manasa, Masayuki] PSL temperature changed      9255   Mon Oct 21 09:46:12 2013 Steve Update PSL Laser just turned on I have just turned on the PSL Innolight laser. The laser shut down  with unknown reason a day ago.      9264   Wed Oct 23 15:46:01 2013 Jenne Update PSL PMC was unlocked The PMC was unlocked for a little over an hour.  I relocked it, and the MC locked itself.  Today, it looks like      9291   Fri Oct 25 10:45:16 2013 Steve Update PSL laser drift monitor set up                                9292   Fri Oct 25 19:56:58 2013 rana Update PSL laser drift monitor set up    I went to re-align the beam into the PMC just now. I also tapped all      9329   Fri Nov 1 19:09:01 2013 rana, evan Configuration PSL PMC reflected beam nonsense  While looking at the PMC REFL beam for the AOM diffracted beam, we noticed that although only one beam exists between the      9333   Mon Nov 4 09:03:21 2013 Steve Update PSL PMC auto locker                                9381   Thu Nov 14 00:33:37 2013 rana Configuration PSL PMC LO is dying... Back in 2009, Jenne replaced the PMC board mixer with a Level 13 one. Today I noticed that the LO level on the PMC screen was showing      9397   Fri Nov 15 14:08:13 2013 manasa Update PSL PSL Innolight shuts down again

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