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ID Date Author Type Category Subject Text   15899   Wed Mar 10 19:58:27 2021 gautam Update LSC SR785 hooked up to CM board In preparation for later today evening. The TT alignment wasn't visibly disturbed.      15900   Thu Mar 11 01:45:42 2021 gautam Update LSC PRFPMi PRM satellite box indeed seems to have been the culprit - shortly after I swapped it to the SRM, its shadow sensors      15902   Thu Mar 11 08:13:24 2021 Paco, Anchal Update SUS IMC First Free Swing Test failed due to typo, restarting now [Paco, Anchal] The triggered code went on at 5:00 am today but a last minute change I made      15903   Thu Mar 11 14:03:02 2021 gautam Update LSC AO path There is some evidence of weird saturation but the gain balancing (0.8dB) and orthogonality (~89 deg) for the daughter board on the REFL11      15904   Thu Mar 11 14:27:56 2021 gautam Update CDS timesync issue? I have recently been running into hitting the 4MB/s data rate limit on testpoints - basically, I can't run DTT TF and spectrum      15905   Thu Mar 11 18:46:06 2021 gautam Update CDS cds reboot Since Koji was in the lab I decided to bite the bullet and do the reboot. I've modified the reboot script - now, it prompts      15906   Thu Mar 11 20:18:00 2021 gautam Update LSC High bandwidth POY I repeated the high bandwidth POY locking experiment. The "Q" demod      15908   Fri Mar 12 03:22:45 2021 Koji Update General Gaussmeter in the electronics drawer For magnet strength measurement: There is a gaussmeter in the flukes' drawer (2nd from the top). It turns on and      15909   Fri Mar 12 03:23:37 2021 Koji Update BHD DO card (DO-32L-PE) brought from WB I've brought 4 DO-32L-PE cards from WB for BHD upgrade for Jon.      15910   Fri Mar 12 03:28:51 2021 Koji Update CDS cds reboot I want to emphasize the followings: FB's RTC (real-time clock/motherboard clock) is synchronized      15911   Fri Mar 12 11:02:38 2021 gautam Update CDS cds reboot I looked into this a bit today morning. I forgot exactly what time we restarted the machines, but looking at the timesyncd logs,      15912   Fri Mar 12 11:44:53 2021 Paco, Anchal Update training IMC SUS diagonalization in progress [Paco, Anchal] - Today we spent the morning shift debugging SUS input matrix diagonalization.      15917   Fri Mar 12 19:44:31 2021 gautam Update LSC Delay line I may want to use the delay line phase shifter in 1Y2 to allow remote actuation of the REFL11 demod phase (for the AO path,      15918   Fri Mar 12 21:15:19 2021 gautam Update LSC coronaversary PRFPMi Attachment #1 - proof that the      15920   Mon Mar 15 20:22:01 2021 gautam Update ASC c1rfm model restarted On Friday, I felt that the ASC performance when the PRFPMI was locked was not as good as it used to be, so I looked into the situation      15922   Tue Mar 16 14:37:36 2021 Yehonathan Update BHD SOS SmCo magnets Inspection In the cleanroom, I opened the nickel-plated SmCo magnet box to take a closer look. I handled the magnets with tweezers. I wrapped      15923   Tue Mar 16 16:02:33 2021 Koji Update LSC REFL11 demod retrofitting I'm going to remove REFL11 demod for the noise check/circuit improvement. ----      15924   Tue Mar 16 16:27:22 2021 Jon Update CDS Front-end testing Some progress today towards setting up an isolated subnet for testing the new front-ends. I was able to recover the fb1 backup disk      15925   Tue Mar 16 19:04:20 2021 gautam Update CDS Front-end testing Now that I think about it, I may only have backed up the root file system of chiara, and not      15926   Tue Mar 16 19:13:09 2021 Paco, Anchal Update SUS First success in Input Matric Diagonalization After jumping through few hoops, we have one successful result in diagonalizing the input matrix for MC1, MC2 and MC3.      15927   Wed Mar 17 00:05:26 2021 gautam Update LSC Delay line BIO remote control While Koji is working on the REFL 11 demod board, I took the opportunity to investigate the non-remote-controllability of the       15929   Wed Mar 17 10:52:48 2021 Jordan Update SUS 3" Ring Adpater for SOS I have added a .1", 45deg chamfer to the bottom of the adapter ring. This was added for a new placement of the eq stops,      15930   Wed Mar 17 11:57:54 2021 Paco, Anchal Update SUS Tested New Input Matrix for MC1 [Paco, Anchal] Paco accidentally clicked on C1:SUS-MC1_UL_TO_COIL_SW_1_1 (MC1 POS to UL Coil Switch) and clicked it      15931   Wed Mar 17 14:40:39 2021 Yehonathan Update BHD SOS SmCo magnets Inspection Continuing with envelope number 2 Magnet      15932   Wed Mar 17 15:02:06 2021 gautam Update safety Door to outside from control room was unlocked I came into the lab a few mins ago and found the back door      15933   Wed Mar 17 15:04:20 2021 gautam Update Electronics Ribbon cable for chassis I had asked Chub to order 100ft ea of 9, 15 and 25 conductor ribbon cable. These arrived today and are stored in the VEA alongside      15934   Wed Mar 17 16:30:46 2021 Anchal Update SUS Normalized Input Matrices plotted better than SURF students Here, I present the same input matrices now normalized row by row to have same norm as current matrices rows. These now I plotted      15935   Thu Mar 18 01:12:31 2021 gautam Update LSC PRFPMi Integrated >1 hour at RF only control, high circulating powers tonight. All      15936   Thu Mar 18 07:02:27 2021 Koji Update LSC REFL11 demod retrofitting Attachment 1: Transfer Functions The original circuit had a gain of ~20 and the phase delay of ~1deg at 10kHz,      15937   Thu Mar 18 09:18:49 2021 Paco, Anchal Update SUS Testing of new input matrices with new data [Paco, Anchal] Since the new generated matrices were created for the measurement made last      15938   Thu Mar 18 12:35:29 2021 rana Update safety Door to outside from control room was unlocked I think this is probably due to the safety tour yesterday. I beleive Jordan showed them around the office area and C&B. Not sure      15939   Thu Mar 18 12:46:53 2021 rana Update SUS Testing of new input matrices with new data Good Enough! Let's move on with output matrix tuning. I will talk to you guys about it privately so that the whole doesn't      15940   Thu Mar 18 13:12:39 2021 gautam Update Computer Scripts / Programs Omnigraffle vs draw.io What is the advantage of Omnigraffle c.f. draw.io? The latter also has a desktop app, and for      15941   Thu Mar 18 18:06:36 2021 gautam Update Electronics Modified Sat Amp and Coil Driver I uploaded the annotated schematics (to be more convenient than the noise analysis notes linked from the DCC page) for the       15942   Thu Mar 18 21:37:59 2021 rana Update LSC PRMI investigations: what IS the matrix?? Locked PRMI several tmes after Gautam setup. Easy w IFO CONFIG screen      15943   Fri Mar 19 10:49:44 2021 Paco, Anchal Update SUS Trying coil actuation balance [Paco, Anchal] We decided to try out the coil actuation balancing after seeing some      15944   Fri Mar 19 11:18:25 2021 gautam Update LSC PRMI investigations: what IS the matrix?? From Finesse simulation (and also analytic calcs), the expected PRCL optical gain is ~1 MW/m (there is a large uncertainty,      15945   Fri Mar 19 15:26:19 2021 Aidan Update Computers Activated MATLAB license on megatron Activated MATLAB license on megatron      15946   Fri Mar 19 15:31:56 2021 Aidan Update Computers Activated MATLAB license on donatella Activated MATLAB license on donatella      15947   Fri Mar 19 18:14:56 2021 Jon Update CDS Front-end testing Summary Today I finished setting up the subnet for new FE testing. There are clones of both fb1 and chiara running      15948   Fri Mar 19 19:15:13 2021 Jon Update CDS c1auxey assembly Today I helped Yehonathan get started with assembly of the c1auxey (slow controls) Acromag chassis. This will replace the final remaining      15949   Fri Mar 19 22:24:54 2021 gautam Update LSC PRMI investigations: what IS the matrix?? I did all these checks today.       15951   Mon Mar 22 11:57:21 2021 Paco, Anchal Update SUS Trying coil actuation balance [Paco, Anchal] For MC coil balancing we will use the ASC (i.e. WFS) error signals      15952   Mon Mar 22 15:10:00 2021 rana Update SUS Trying coil actuation balance There's an integrator in the MC WFS servos, so you should never be disabling the ASC inputs in the suspensions. Disabling      15953   Mon Mar 22 16:29:17 2021 gautam Update ASC Some prep for AS WFS commissioning Added rough cts2mW calibration filters to the quadrants, see       15954   Mon Mar 22 19:07:50 2021 Paco, Anchal Update SUS Trying coil actuation balance We found that following protocol works for changing the input matrices to new matrices: Shut the PSL shutter C1:PSL-PSL_ShutterRqst.  8x    15955   Tue Mar 23 09:16:42 2021 Paco, Anchal Update Computers Power cycled C1PSL; restored C1PSL So actually, it was the C1PSL channels that had died. We did the following to get them back:      15956   Wed Mar 24 00:51:19 2021 gautam Update LSC Schnupp asymmetry I used the Valera technique to measure the Schnupp asymmetry to be       15957   Wed Mar 24 09:23:49 2021 Paco Update SUS MC3 new Input Matrix [Paco] Found IMC locked upon arrival Loaded newest MC3 Input Matrix coefficients using      15958   Wed Mar 24 15:24:13 2021 gautam Update LSC Notes on tests For my note-taking: Lock PRMI with ITMs as the MICH actuator. Confirm that the MICH-->PRCL

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