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ID Date Author Type Category Subject Text   7247   Wed Aug 22 01:54:03 2012 Jenne Update General List o' things: YarmASS, ETMXTcamera, POXwhiteningTriggering While meditating on other things, I have noticed / found the following today:      11190   Wed Apr 1 16:52:02 2015 Jenne Update LSC List of measurements I'd like to get a concrete list of measurements written down, so that it's clear what needs to be done before I graduate.      14582   Sun Apr 28 16:00:17 2019 gautam Update Computer Scripts / Programs List of suspension test Here are some tests we should script. Checking Coil Vmons, OSEM PDmons, and watchdog enable wiring Disable      10126   Wed Jul 2 22:58:11 2014 Jenne Update LSC Little Bo-Peep has found her phase Never mind.  This is just the low pass filter that Den put in to try to      10125   Wed Jul 2 21:30:42 2014 Jenne Update LSC Little Bo-Peep has lost her phase Little Bo-Peep has lost her phase,      2284   Tue Nov 17 21:09:17 2009 Jenne, rana Update General Little Thorlabs Photodiode [Rana, Jenne] We opened up the little Thorlabs battery operated PD to see what was inside.       6511   Mon Apr 9 17:03:38 2012 Den Update Environment Lms vs Wiener I tried to figure out why offline LMS filter subtract seismic noise much better from MC_F then the Wiener filter. I did the calculations      10543   Fri Sep 26 11:44:55 2014 nicolas Frogs Computer Scripts / Programs Loaded larry's fake filter into C1:ALS-OFFSETTER2  Larry and Nicolas Larry's transfer function measurements suddenly started returning 0dB 0degrees when      15633   Mon Oct 19 15:38:42 2020 Koji Update Electronics Loan: A file binder "40m wiring diagram" I'll bring a file binder "40m wiring diagram" to home at the next chance.      10122   Wed Jul 2 15:35:34 2014 ericq Update Computer Scripts / Programs Local Chiara backups Koji has provided a 2TB USB3 external hard drive that will get daily backups of chiara:/home/cds, the idea being that if the internal HD at      10236   Fri Jul 18 15:21:12 2014 ericq Update Computer Scripts / Programs Local Chiara backups                                15167   Tue Jan 28 17:36:45 2020 gautam Configuration Computers Local EPICS7.0 installed on megatron [Jon, gautam] We found that the caput      390   Fri Mar 21 17:01:21 2008 rana Configuration DMF Locale change on Mafalda & seisBLRMS restart Ever since we moved the accelerometers to be around the MC and changed their names, the seisBLRMS      9360   Thu Nov 7 14:39:49 2013 Jenne Update LSC Lock Acquisition Game Plan Between the 40m meeting, and chatting with Gabriele, there was lots of talking yesterday about our 40m Lock Acquisition game plan.       10998   Wed Feb 11 00:07:54 2015 rana Update LSC Lock Loss plot Here is a lock loss from around 11 PM tonight. Might be due to poor PRC signals.        17321   Tue Nov 29 11:38:37 2022 JC HowTo LSC Lock Single Arm After MICH lock I tried locking single arm this morning, but I was unable to because the triggers were set to lock strictly to MICH. Anchal      15348   Tue May 26 02:15:36 2020 gautam Update LSC Lock acquisition portal entry Summary: Provided the IMC is cooperative, the input pointing isn't      15349   Tue May 26 02:31:00 2020 gautam Update LSC Lock acquisition sequence Here, I provide some details of the sequence. Obviously, I am presenting one of the quickest transitions to the fully locked state, I      15360   Wed May 27 20:14:51 2020 Koji Update LSC Lock acquisition sequence I see. At the 40m, we have the direct transition from ALS to RF. But it's hard to compare them as the storage time is very different.      15364   Wed Jun 3 01:34:53 2020 gautam Update LSC Lock acquisition update portal Highlights: With better ASC servos implemented, I think the lock stability has      15369   Wed Jun 3 03:29:26 2020 Koji Update LSC Lock acquisition update portal Woo hoo! Which 1f signals are you going to use? PRCL has sign flipping      15371   Wed Jun 3 11:40:56 2020 gautam Update LSC Lock acquisition update portal For these initial attempts, I was just trying to transition MICH to REFL55Q. I agree, the PRCL situation may be more complicated.      11443   Fri Jul 24 13:49:09 2015 Steve Update safety Lock doors please ! Thursday morning I found the control room emergency exit not locked. Please check the doors when leaving      8376   Fri Mar 29 19:56:02 2013 Gabriele Metaphysics LSC Lock of PRMI on sidebands I finally managed to get long stretches of PRMI lock, up to many minutes. The lock is not yest very stable, it seems to me that      8378   Sun Mar 31 17:26:32 2013 rana Update LSC Lock of PRMI on sidebands    Our first move has to be fixing the whitening switching for REFL55. That's      8380   Mon Apr 1 09:25:35 2013 Jenne Metaphysics LSC Lock of PRMI on sidebands [Gabriele, Jenne] I put a notch in FM10 for both MICH and PRCL at 628Hz, to try to prevent us from      6509   Mon Apr 9 15:02:30 2012 Jenne Update LSC Locked MICH I was going to try some locking, but things are a little too noisy.  Just so Kiwamu knows what I did today,      6510   Mon Apr 9 15:09:34 2012 Jenne Update LSC Locked MICH                    58   Fri Nov 2 12:18:47 2007 waldman Summary OMC Locked OMC with DCPD [Rich, Sam] We locked the OMC and look at the signal      17592   Mon May 15 18:34:05 2023 Paco Summary LSC Locked PRMI in carrier and LO phase with BH44 and achieved handoff to BHDC_DIFF [Yuta, Paco] We locked PRMI-BHD      17578   Tue May 2 17:33:53 2023 Mayank Summary LSC Locked PRMI in carrier for an hour with LO phase controlled using BH55 [Mayank, Radhika, Paco] We locked PRMI for      17699   Wed Jul 19 21:28:27 2023 Reuben Update ALS Locked XEND green laser with high transmission Wanted to see if digital filter on the Moku:Go can be changed without breaking lock. Loading different filter files broke lock.      17126   Thu Sep 1 09:00:02 2022 JC Configuration Daily Progress Locked both arms and aligned Op Levs Each morning now, I am going to try to align both arms and lock. Along with that, sometime at towards the end of each week,      4313   Thu Feb 17 11:51:14 2011 josephb Update CDS Lockin filter names too long - broke loading Problem: Could not load filters into the C1:SUS-ETMX_LOCKIN1_SIG filter bank.      1316   Tue Feb 17 05:20:11 2009 Yoichi Update LSC Locking Since we excluded *.snap and *.req files from the svn control in the medm directory and these were not restored by the svn co, the      16247   Wed Jul 14 20:42:04 2021 gautam Update LSC Locking [paco, gautam] we decided to give the PRFPMI lock a go early-ish. Summary of findings today      1317   Wed Feb 18 03:17:40 2009 Yoichi Update LSC Locking Yoichi, Kakeru, Last night, the cm_step script failed at      15471   Sun Jul 12 02:42:01 2020 gautam Update LSC Locking (on rossa) Main goals tonight were: Check if I can lock the interferometer by working on rossa - indeed,      1334   Tue Feb 24 02:23:40 2009 Yoichi Update Locking Locking - MC board bad Rob, Yoichi, Alberto, Kiwamu, Kakeru We found that the OMC alignment feedback      15037   Wed Nov 20 01:07:18 2019 gautam Update LSC Locking - progress Summary: CARM offset was reduced to 0 with the PRMI locked. TRY      15038   Wed Nov 20 12:14:17 2019 gautam Update LSC Locking - progress I took a look at the TRX/TRY RIN reported in the single arm POX/POY lock, and compared the performance of the two available PDs      15034   Mon Nov 18 21:04:38 2019 gautam Update LSC Locking - some ideas Some ideas Koji suggested: Try approaching the CARM offset zero point "from the other side"      17277   Thu Nov 17 11:24:39 2022 JC HowTo LSC Locking MICH [Yuta, JC] Here is the Yuta's Alignment Scheme from elog      1329   Fri Feb 20 03:52:23 2009 Yoichi Update Locking Locking Tonight Yoichi, Peter Tonight, we had a problem with the DD hand      17087   Wed Aug 17 10:27:49 2022 Cici Update General Locking X-arm AUX laser TL;DR: Got the x-arm aux laser locked again and took more data - my fit on my transfer functions need improvement and my new method      2583   Tue Feb 9 17:18:45 2010 josephb Summary Computers Locking Y arm successful with fully replaced front-end for ITMY We were able to lock the Y-arm using Megatron and the RCG generated code, with nothing connected to c1iscey.      9945   Tue May 13 03:30:10 2014 Jenne Update LSC Locking activities - no progress [Jenne, Rana, EricQ] We tried a few times to engage the AO path while holding CARM on sqrtTrans      10485   Wed Sep 10 02:53:32 2014 Jenne Update LSC Locking activities - nothing new :( [Jenne, EricQ] No major progress today.   I fixed a bug in my lockloss script      10486   Wed Sep 10 02:59:42 2014 ericq Update LSC Locking activities - nothing new :( Some small things I did tonight which did little to nothing to help:     I reset the offsets in      6420   Wed Mar 14 23:02:09 2012 Koji Update LSC Locking activity Kiwamu and Koji The target is to realize DRMI or PRMI + one arm with ALS.

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