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ID Date Author Type Category Subject Text   16849   Thu May 12 20:11:18 2022 Anchal Update BHD BHDBS Output beams steered out to ITMY table I successfully steered out the two output beams from BHD BS to ITMY table today. This required significant changes on the table,      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      16851   Fri May 13 14:26:00 2022 JC Update Alignment LO2 Beam [Yehonathan, JC] Yehonathan and I attempted to align the LO2 beam today through the BS chamber      16852   Fri May 13 18:42:13 2022 Paco Update Alignment ITMX and ITMY sat amp failures [Yuta, Anchal, Paco] As described briefly by JC, there were multiple failure modes going during      16853   Sat May 14 08:36:03 2022 Chris Update DAQ DAQ troubleshooting I heard a rumor about a DAQ problem at the 40m. To investigate, I tried retrieving      16854   Mon May 16 10:49:01 2022 Anchal Update DAQ DAQ troubleshooting [Anchal, Paco, JC] Thanks Chris for the fix. We are able to access the testpoints now but we      16855   Mon May 16 12:59:27 2022 Chris Update DAQ DAQ troubleshooting It looks like the RFM problem started a little after 2am on Saturday morning (attachment 1). It’s subsequent to what I did,      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.      16857   Mon May 16 14:46:35 2022 Tommy Update Electronics RFSoC MTS Work We followed the manual's guide for setting up MTS to sync on external signal. In the xrfdc package, we update the RFdc      16858   Mon May 16 16:13:01 2022 Yehonathan Update BHD Initial BHD modeling: Damped suspension model I was finally able to set up a stable suspension model with the help of Yuta and I'm now ready to start doing some MICH noise      16859   Mon May 16 19:14:17 2022 Anchal Update BHD Camera set on AS path and BHDBS output path [Anchal, Paco, Yuta] We aligned AS path avoiding any clipping to the AP table where we setup      16860   Tue May 17 18:43:38 2022 Anchal Update BHD Placed SRM in ITMY Chamber [Anchal, Paco, Yuta] SRM Placement SRM was moved from its parked location to the      16861   Wed May 18 08:30:29 2022 Paco Update BHD SRM OpLev [Paco] The SRM Oplev injection and detection paths interfere heavily with the POY11. Due      16862   Wed May 18 09:02:52 2022 Anchal Update BHD WFS1 PD centered I centered WFS1 PD so that IMC WFS Servo does not go out of range.        16863   Wed May 18 17:23:15 2022 Anchal Update BHD Placed PRM in BS Chamber [Anchal, Paco, Yuta, JC] SRM Oplev setup We setup SRM oplev path for the aligned position      16864   Thu May 19 08:51:40 2022 Paco Update BHD SRM OpLev [Paco, Ian] After agreement from Yuta/Anchal, I moved POYM1 yaw to clear the aforementioned      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',      16866   Thu May 19 19:05:59 2022 Anchal Update BHD BS Chamber all work finished, BHD path setup [Anchal, Paco, Yuta] BS Oplev Path The changed position of PRM (40m/16863)      16867   Fri May 20 12:42:23 2022 Tega Update VAC Door installation on the end stations [JC, Tega, Chub] Today we installed the 200 lbs doors on the end station chambers.      16868   Fri May 20 20:03:48 2022 Paco Update BHD ITMY chamber work finished - LO and AS overlapped [Paco, Anchal, Yuta] Today, in short we: Recovered alignment of      16869   Mon May 23 13:16:59 2022 Paco Update BHD End of vent - checks [Paco, Yuta] Prep for closing and pump down. Aligned IFO to maximize      16870   Tue May 24 10:37:09 2022 Tega Update VAC added FRG channels to slow channel ini file [Vacuum gauge sensors] Paco informed me that the FRG sensor EPICS channels are not available on dataviewer,      16871   Tue May 24 11:04:53 2022 JC Update VAC Beginning Pumpdown [JC, Jordan, Paco, Chub] We began with the pumpdown this morning. We started with the annulus volume      16872   Tue May 24 15:21:13 2022 Anchal Update BHD Freeswing tests of new SOS started I modified the script freeSwing.py to use damping loop output switches to free the optic instead of watchdog or coil output      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.      16874   Wed May 25 16:56:44 2022 Paco Configuration BHD IFO recovery - IMC alignment [Yuta, Paco] We aligned IMC to recover the IFO progressively. First step was to center the      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.      16876   Thu May 26 15:55:10 2022 Tommy Update Electronics RFSoC Power Spectrum Finished building power spectrum analyzer for the RFSoC. There are two things that I would like to address down the road. First      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      16878   Fri May 27 12:15:30 2022 JC Update Electronics CRT TV / Monitor 6 [Yehonathan, Paco, Yuta, JC] As we were cleaning up this morning, we heard a high pitch sound that turned into      16879   Fri May 27 15:53:17 2022 Tommy Update Electronics RFSoC MTS Work With some help from the forums, we printed the status of the DAC MTS sync and were able to determined that our board's vivado      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),      16881   Fri May 27 17:46:48 2022 Paco Summary Computers CDS upgrade visit, downfall and rise of c1lsc models [Paco, Anchal-remote, Yuta, JC] Sometime around noon today, right after cds upgrade planning tour, c1lsc FE      16882   Tue May 31 14:44:02 2022 JC Update Electronics CRT TV / Monitor 6 [Paco, JC] Paco and I fixed the ethernet cable which was hanging. We stopped models c1x07      16883   Tue May 31 17:30:01 2022 Yehonathan Update BHD Green shutters fixed [Paco, Yehonathan] We fixed the slow control over the green beam shutters.      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      16885   Wed Jun 1 12:56:44 2022 Paco Summary Electronics STEMlab 125 handout [Paco, Deeksha] Yesterday I handed Deeksha a red pitaya (stemlab 125 - 10) to begin her summer      16886   Thu Jun 2 20:05:37 2022 yuta Configuration PSL IMC input power recovered to 1W, some alignment works [Paco, Yuta] We have      16887   Fri Jun 3 12:13:58 2022 Paco Configuration CDS Fix RFM channels [Paco, Yuta] We tried fixing the issue of LSC_TRY and LSC_TRX channels not working. We first      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.      16890   Sun Jun 5 19:46:40 2022 Paco Update LSC Fixed IMC Trans sum issue [Paco] Fixed the issue below:      16891   Mon Jun 6 09:37:16 2022 JC Update SUS InMatCalc [Paco, JC] Paco and I attempted to calculate the input matrices from May 24, 2022, but      16892   Mon Jun 6 13:35:11 2022 Paco Update LSC First calibrated spectra of MICH at AS55 Q [Paco, Yuta] On the topic of high AS55_Q RFPD offset, it seems it stems from a small residual      16893   Mon Jun 6 16:09:23 2022 rana Configuration DetChar Summary Pages: seis BLRMS I updated the config file c1pem.ini in /users/public_html/detcharsummary/ConfigFiles, and commited it so I hope it works, but I      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.      16895   Mon Jun 6 22:08:55 2022 Koji Update IMC MC1 OSEM sensor sign flipped, MC1/2/3 free swinging overnight for inmat diagonalization Note that MC1 has a new style sat amp because the old one collapsed. The sign flip might have been the result of the replacement      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).      16897   Tue Jun 7 18:32:46 2022 Deeksha Update Electronics Noise Budgeting ADC (of redpitaya) Made plots on i/p noise of redpitaya . Need to reconsider sampling frequency (to improve plot at lower freq)      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.

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