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ID Date Author Type Category Subject Text   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      16886   Thu Jun 2 20:05:37 2022 yuta Configuration PSL IMC input power recovered to 1W, some alignment works [Paco, Yuta] We have      16888   Fri Jun 3 15:22:51 2022 yuta Update LSC Both arms locked with POY/POX, IR beam centered on TMs with ASS [JC, Paco, Yuta] We locked both Y and X arms with POY11      16889   Fri Jun 3 17:42:50 2022 yuta Update LSC MICH locks with AS55_Q AS path at AP table as re-aligned and confirmed that MICH can be locked with AS55 Q.      16894   Mon Jun 6 21:01:22 2022 yuta Update IMC MC1 OSEM sensor sign flipped, MC1/2/3 free swinging overnight for inmat diagonalization [Tomislav Andric, Rana, Yuta] We put -1 to MC1 OSEM sensor gains and re-tuned MC1 damping.      16896   Tue Jun 7 17:26:21 2022 yuta Update SUS ITMY ULCOIL mystery not solved [Paco, Yuta] We investigated the ITMY ULCOIL issue (40m/16873).      16898   Tue Jun 7 19:13:12 2022 yuta Update SUS Agreement on suspension damping loop polarity conventions Anchal, Paco and I agreed to follow the polarity conventions below for suspension damping loops.      16903   Wed Jun 8 18:16:20 2022 yuta Update SUS ITMY ULCOIL mystery: Coil driver swap test To see if the ULCOIL channel of the ITMY coil driver is working or not, I swapped ITMY coil      16905   Fri Jun 10 13:02:14 2022 yuta Update SUS ITMY ULCOIL mystery: Coil driver swap test ITMY ULCOIL was measured to have ~3.3 mH as measured from the flange. RTFE 40m/16896 .      16907   Fri Jun 10 15:02:04 2022 yuta Update SUS Servo gain sign flipped for MC1 WFS relief The servo gain for MC1 in /opt/rtcds/caltech/c1/Git/40m/scripts/MC/WFS/reliefWFS was flipped to account for COIL_GAIN flip done in 40m/16898.      16909   Fri Jun 10 20:11:46 2022 yuta Update ASC Yarm ASS re-tuning in progress [Anchal, Yuta] We tried to re-tune Yarm ASS today.      16910   Fri Jun 10 21:10:01 2022 yuta Update SUS ITMY ULCOIL mystery: Coil driver swap test We checked the photos we have, but we didn't have the photos which show ULCOIL situation clearly.      16911   Mon Jun 13 20:26:09 2022 yuta Update ASC Yarm ASS re-tuning in progress -part 2- [Anchal, Yuta] We are still in the progress of re-commissioning      16914   Tue Jun 14 19:34:06 2022 yuta Update SUS Resonant frequency identification from the free swing test [JC, Anchal, Yuta] We are working on resonant frequency idendification from the free swing test done  7x    16919   Wed Jun 15 15:45:37 2022 yuta Update SUS LO1 LLCOIL now working, it was loose connection We tracked the issue of LO1 LLCOIL not actuating LO1, and found that the DB9 cable from the coil driver to the sat amp was loose.      16920   Wed Jun 15 17:03:17 2022 yuta Update SUS ITMY ULCOIL issue solved, loose connection in sat amp box [Anchal, Yuta] We fixed the issue of ITMY ULCOIL      16922   Thu Jun 16 15:29:03 2022 yuta Update PSL PMC input beam aligned again, IMC [Paco, Tomislav, Yuta] Somehow, when we were trying to measure      16929   Fri Jun 17 16:22:21 2022 yuta Update LSC Actuator calibration of BS. ITMX, ITMY, updated MICH displacement spectra from c1cal Following what we have done in 2013 (40m/8242), actuator calibration was done using MICH.  6x    16932   Tue Jun 21 14:17:50 2022 yuta Configuration BHD BHD DCPDs re-routed to c1sus2 After discussing with Anchal, we decided to route BHD related PD signals directly to ADC of c1sus2, which handles our new suspensions      16935   Tue Jun 21 21:17:16 2022 yuta Update BHD RTS models for BHD added but PCIE error remaining [Anchal, Yuta] RTS models for BHD homodyne phase control (c1hpc)      16940   Wed Jun 22 18:55:31 2022 yuta Update LSC Daily alignment work; POY trouble solved [Koji, Yuta] I found that Yarm cannot be locked

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