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ID Date Author Type Category Subject Text   8103   Tue Feb 19 02:23:40 2013 yuta Bureaucracy General action items for PRFPMI These are things need to be done for demonstrating PRFPMI using ALS. All of these should be done before      8105   Tue Feb 19 08:06:02 2013 yuta Update Electronics POP path set up but AS55 is broken I didn't use LED flash light. We learned from the past (elog #7355). I checked that POP55 and REFL55/165/33/11      8112   Tue Feb 19 19:55:52 2013 yuta Update IOO MC yaw input tuned [Jenne, Manasa, Yuta] Since we levelled IMC stack, we had      8114   Wed Feb 20 03:13:10 2013 yuta Update Alignment clipping centering checklist I attached clipping/centering checklist for the alignment. Blue      8115   Wed Feb 20 10:13:41 2013 yuta Update Alignment PRC flashing brighter than last week After in-vac alignment work last night, PRC is flashing brighter than PRMI alignment last week.      8119   Wed Feb 20 19:48:16 2013 yuta Update Alignment BS table oplev re-arranged [Sendhil, Yuta] After aligning IFO and putting the      8121   Wed Feb 20 20:15:29 2013 yuta Update Alignment SRM oplev status Currently, SRM is misaligned in pitch so that SRM reflected beam hits on the top edge of SR3 (not on the mirror, but on the cage      8122   Wed Feb 20 20:58:37 2013 yuta Update Alignment clipping centering checklist Blue ones are the ones we checked yesterday. Green      8124   Wed Feb 20 21:56:08 2013 yuta Update Alignment clipping centering checklist I'm not sure about the OMC situation at 40m. I think there are no direct beam reflected back into IFO from OMC path. There must be      8129   Thu Feb 21 15:21:07 2013 yuta Update VAC all heavy doors on, started pumping down annulus [Steve, Manasa, Jenne, Sendhil, Evan, Yuta]      8141   Sat Feb 23 00:34:28 2013 yuta Update Computers crontab in op340m deleted and restored (maybe) I accidentally overwrote crontab in op340m with an empty file.      8143   Sat Feb 23 07:14:58 2013 yuta Update LSC can't lock Y arm I tried to align and lock Y arm for the first time after pumping. But I couldn't lock Y arm for more      8146   Sat Feb 23 15:26:26 2013 yuta Update Computers crontab in op340m updated I found some daily cron jobs for op340m I missed last night. Also, I edited timings of hourly jobs to maintain consistency with      8150   Sat Feb 23 17:14:59 2013 yuta Update LSC can't lock Y arm Jenne found that;   0. If all mirrors are "aligned," Yarm flashes.      8157   Mon Feb 25 15:30:29 2013 yuta Update Alignment Y arm locked, both colors [Koji, Yuta] We aligned Y arm to Y green and tweaked      8162   Mon Feb 25 21:25:14 2013 yuta Update Alignment both arms locked in IR [Jenne, Evan, Yuta] After Y alignment, X arm is aligned      8164   Mon Feb 25 22:42:32 2013 yuta Summary Alignment current IFO situation [Jenne,Yuta] Both arms are aligned starting from      8177   Wed Feb 27 01:09:53 2013 yuta Update Locking PRMI sideband/carrier locked [Jenne,Yuta] We succeeded in locking PRMI in sideband  6x    8181   Wed Feb 27 11:22:54 2013 yuta Update Computers backup crontab I made a simple script to backup crontab (/opt/rtcds/caltech/c1/scripts/crontab/backupCrontab).      8182   Wed Feb 27 11:59:43 2013 yuta Update SUS PRM/BS coil re-balanced I re-adjusted coil gains and f2a filters for PRM and BS. I'm not sure what happened to PRM      8196   Thu Feb 28 02:43:49 2013 yuta Update LSC some qualitative evidence of PRMI sideband lock [Manasa, Yuta] Since we have setup POP22 PD now(      8197   Thu Feb 28 03:25:27 2013 yuta Update LSC PR gain ~ 25 from PRMI carrier lock [Manasa, Yuta] We locked PRMI in carrier.       8199   Thu Feb 28 05:54:54 2013 yuta Update RF System phase tracker: calibration I swept the frequency of RF input to the beatbox to calibrate and check linearity range of phase tracker.      8200   Thu Feb 28 06:51:17 2013 yuta Update RF System phase tracker: noise level I measured noise level of the phase tracker by inputting constant frequency RF signal from marconi.      8208   Fri Mar 1 16:58:37 2013 yuta Update LSC Xarm oscillation stopped POX11 oscillation at 630 Hz was stopped by installing 630 Hz resonant gain to LSC_XARM. After few hours, oscillation stopped.      8212   Sat Mar 2 05:53:15 2013 yuta Update LSC stable lock of PRMI I tuned alignment, gains and filters to achieve stable lock of PRMI. It now locks quite stably with UGF      8214   Sat Mar 2 20:09:12 2013 yuta Update RF System phase tracker: DAQ noise limited [Koji, Yuta] We found that our phase tracker noise      8221   Mon Mar 4 16:46:31 2013 yuta Update SUS oplev calibration for PRM [Manasa, Sendhil, Yuta] We calibrated oplev for PRM. Calibration      8222   Mon Mar 4 17:32:26 2013 yuta Bureaucracy General flowchart for PRMI g-factor measurement I made a very useful flowchart for the week. Our goal for the week is to measure g-factor of PRC in PRMI.      8230   Tue Mar 5 06:27:14 2013 yuta Update LSC intra-cavity power dependence on mirror misalignment I measured intra-cavity power dependance on mirror misalignment. Intra-cavity      8232   Tue Mar 5 17:09:30 2013 yuta Update SUS oplev calibration for ITMY [Manasa, Sendhil, Yuta] We calibrated oplev for ITMY. Calibration      8235   Tue Mar 5 23:00:08 2013 yuta Update LSC Yarm and PRC g-factor from misalignment measurement I fitted intra-cavity power dependance on mirror misalignment plot with parabola to get the g-factor.      8236   Tue Mar 5 23:37:11 2013 yuta Update SUS PRM angular motion spectra I measured PRM angular motion spectra (in daytime today). PRM angular motion is       8248   Thu Mar 7 01:43:35 2013 yuta Update LSC calibrated MI differential length spectra Free swing MI differential length is 86 nm RMS and residual length when locked      8252   Thu Mar 7 18:12:03 2013 yuta Update Alignment Input beam drift ~ 0.1 mrad/h in pitch [Jenne, Manasa, Yuta] We temporarily centered the beam on      8254   Thu Mar 7 18:48:43 2013 yuta Update Computer Scripts / Programs releasing my secret scripts I released/updated my secret scripts to real scripts directory. I checked they run correctly (but      8255   Fri Mar 8 02:17:04 2013 yuta Update LSC calibration of PRM actuator [Manasa, Yuta] We measured AC response of PRM actuator      8256   Fri Mar 8 03:07:19 2013 yuta Update LSC calibrated PRM-ITMY length spectra Measured free swing PRM-ITMY length was 230 nm RMS.      8259   Fri Mar 8 15:27:42 2013 yuta Update Green Locking PSL green shutter installed [Manasa, Yuta] Mechanical shutter for PSL green is      8261   Fri Mar 8 16:05:56 2013 yuta Bureaucracy General action items for PRMI / ALS-FPMI We should focus our work both on PRMI and ALS-FPMI (elog #8250).      8283   Wed Mar 13 08:34:33 2013 yuta Update Locking TWO arms TWO colors - I took the shutter from AS table to use it for the PSL green. It was sitting near MC REFL path unused (elog      16827   Tue May 3 21:05:23 2022 yuta Update BHD AS path alignment, removing a lot of green stuff [Tega, Yehonathan, Koji, Yuta] We tried to align AS path this afternoon.  7x    16850   Thu May 12 20:24:29 2022 yuta Update BHD POX and POY investigation [Anchal, Yuta] We checked POX and POY RF signal chains      16856   Mon May 16 13:22:59 2022 yuta Update BHD REFL and AS paths aligned at AP table After Xarm and Yarm were aligned by Anchal et al, I aligned AS and REFL path in the AP table.      16865   Thu May 19 18:56:08 2022 yuta Update BHD Current OSEM sensor values with all the suspensions aligned Current OSEM sensor values with all the suspensions aligned are attached. For 'BS','ITMX','ETMX','ITMY','ETMY','PRM','SRM','LO1','LO2',      16873   Wed May 25 16:38:27 2022 yuta Update SUS Suspensions quick health check [JC, Yuta] We did a quick health check of suspesions after the pump down.      16875   Wed May 25 17:34:47 2022 yuta Configuration BHD IFO recovery - IFO alignment IFO aligned to maximize flashings, except for GRY and LO-AS.      16877   Thu May 26 19:55:43 2022 yuta Configuration BHD Oplevs centered, BHD DCPDs are now online [Paco, Yuta] We have aligned the IFO (except for LO-AS and GRY), and centered      16880   Fri May 27 17:45:53 2022 yuta Configuration BHD BHD camera installed, GRY aligned [JC, Paco, Yuta] After the IFO recovery (elog 40m/16881),      16884   Wed Jun 1 11:56:28 2022 yuta Update ALS Shutter driver for GRY replaced [JC, Yuta] We replaced a shutter driver for GRY

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