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ID Date Author Type Category Subject Text Attachments
  17320   Mon Nov 28 20:14:27 2022 AnchalUpdateASCAS WFS proposed path to IMC WFS headsIn Attachment 1, I give a plan for the
proposed path of AS beam into the IMC WFS
heads to use them temporarily as AS WFS.
 F5B115E5-885F-463C-9645-BB2EB73B6144_1_201_a.jpeg 
  17319   Mon Nov 28 18:21:50 2022 PacoSummaryBHDBH44 prepI checked the LSC rack to evaluate what
we might need to generate 44 MHz rf in the
hypothetical case we go from BH55 to BH44
  
  17318   Mon Nov 28 16:58:20 2022 PacoUpdateCDSpypi package added[Paco, Tega]

I added the pypi package "restoreEpics"
  
  17317   Mon Nov 28 16:53:22 2022 AnchalSummaryBHDF2A filters on LO1 LO2 AS1 and AS4[Paco, Anchal]

I changed the script in /opt/rtcds/caltech/c1/Git/40m/scripts/SUS/outMatFilters/createF2Afilters.py
  
  17316   Mon Nov 28 11:21:25 2022 JCUpdatePSLPMC input beam alignmentC1:PSL-PMC_PMCTRANSPD was increased from
0.72 to 0.731
 Screenshot_from_2022-11-28_11-20-31.png 
  17315   Mon Nov 28 11:15:23 2022 AnchalUpdateCDSFront ends DAC Kill (DK) got activated; restored FEs[Anchal, Paco, Yehonathan, JC]

Last night at 9:15 pm PST (Nov
27th, 2022) some kind of disruption happened
 FE_State_Word_Changes.png 
  17314   Sun Nov 27 15:30:22 2022 ChrisUpdateOptimal ControlIMC alignment controller testingFive more mode cleaner alignment controllers
were tested this morning (remotely). These
were designed to run in tandem with the standard
  
  17313   Fri Nov 25 15:35:23 2022 AnchalUpdateSUSLow noise stateTurned off HEPA at:

PST: 2022-11-25 15:34:55.683645
PST
  
  17312   Fri Nov 25 12:15:46 2022 AnchalUpdateVACVacuum Gate valves restoredI came today to find that PSL shutter was
closed. I orginially thought some shimmer
obersvations are underway in the quiet state.
 Screenshot_2022-11-25_12-29-23.png 
  17311   Thu Nov 24 15:37:45 2022 AnchalUpdateASCIMC WFS output matrix diagonalization effortI tried following the steps and the method
I was using converged to same output matrix
upto 2 decimal points but there is still
 WFS_Step_DCResponses_Offsets_Marked.png 
  17310   Thu Nov 24 11:23:35 2022 AnchalUpdateSUSLow noise stateI've turned off HEPA fan and all lights
at
PST: 2022-11-24 11:23:59.509949 PST
  
  17309   Wed Nov 23 20:58:23 2022 yutaSummaryBHDBHD_DIFF sensitivity to BS dither with MICH Offset with different BH55 demodulation phases[Anchal, Paco, Yuta]

Attachment #1 is the same plot as 
 BHDIFF_rand_SensvsMICHOffset_pydemod.pdfBHDIFF_rand_SensvsMICHOffset_pydemod_NoMICHinBH55Q.pdfBHDIFF_rand_SensvsMICHOffset_pydemod_BH55at70deg.pdfMICHBHD_BH55.pdf 
  17308   Wed Nov 23 17:28:39 2022 YehonathanUpdateBHDSome more calculationsFields at the BHD BS. More on this later.  Fields_at_BHDBS.pdf 
  17307   Wed Nov 23 17:21:44 2022 JCUpdateVACInterlocks may have been tripped due to N2 pressure loss[Paco, JC]

While changing out one of the N2
tanks today, one of the fitting stripped.
 Screen_Shot_2022-11-23_at_5.22.57_PM.pngScreen_Shot_2022-11-23_at_5.23.09_PM.png 
  17306   Wed Nov 23 17:12:34 2022 RadhikaUpdateALSXARM green laser lock debuggingI tested the mixer by feeding it a 300
kHz signal sourced from a Moku:Go. I kept
the LO input the same - 231.25 kHz from
  
  17305   Wed Nov 23 16:34:33 2022 KojiUpdateCDSNew donatella testingLet's use this entry to list of the
test results of new donatella.


Firefox
  
  17304   Wed Nov 23 16:12:00 2022 TegaUpdateCDSI/O chassis parts inventory II[Tega, JC]

We picked up the following I/O
chassis components from Downs CDS testing
  
  17303   Wed Nov 23 14:59:11 2022 PacoSummaryBHDBHD_DIFF sensitivity to BS dither with MICH Offset[Yuta, Paco, Anchal]

We measured

(a)
 BHDIFF_rand_SensvsMICHOffset.pdf 
  17302   Wed Nov 23 12:58:33 2022 YehonathanUpdateBHDSome more calculationsChanged the BHD BS transmissivity to 0.56.

Demodulation Phases

As was noted before. The LO phase
 LO_phase_sens_vs_LO_phase_RF.pdfLO_phase_sens_vs_LO_phase_RF_fixed_demod.pdfLO_phase_sens_vs_MICH_Offset.pdf 
  17301   Wed Nov 23 11:06:08 2022 AnchalUpdateBHDc1hpc and c1sus modified to add BS dither and demodulation optionc1hpc has option of dithering BS now (sending
excitation to BS LSC port to c1sus over IPC).
This is available for demodulating BHDC and
  
  17300   Tue Nov 22 20:46:11 2022 RadhikaUpdateALSXARM green laser lock debugging[Paco, Anchal, Radhika]

We tried to debug why the XARM
green laser isn't catching lock with
  
  17299   Tue Nov 22 15:33:02 2022 TegaUpdateCDSI/O chassis parts inventory[Tega, JC]

We received the following I/O chassis
parts from LLO:
  
  17298   Tue Nov 22 10:29:31 2022 AnchalSummarySUSITMY Coil Strengths BalancedI followed this
procedure to balance the coil strengths
on ITMY. The position sensor was created
  
  17297   Tue Nov 22 08:56:27 2022 JCUpdatePSLPMC input beam alignment[Paco, Anchal, JC]

C1:PSL-PMC_PMCTRANSPD ~ 0.715 this
morning, this was increased to ~0.730. There
 Screenshot_from_2022-11-22_08-58-45.png 
  17296   Mon Nov 21 18:43:46 2022 yutaUpdateBHDc1hpc and c1lsc modified to send BHD_DIFF and BHD_SUM[Anchal, Yuta]

To send BHD signals from c1hpc after
 Screenshot_2022-11-21_18-42-49_BHD.png 
  17295   Mon Nov 21 18:33:05 2022 AnchalUpdateSUSMC2 OSEMs calibrated using MC_FRepeated this for MC2 using the error measurement
technique mentioned in 40m/17286
using this notebook.
  
  17294   Mon Nov 21 17:44:00 2022 yutaSummaryBHDMICH BHD displacement sensitivity with AS55_Q and BHD_DIFF[Paco, Yuta]

MICH displacement sensitivity was
compared under AS55_Q locking and BHD_DIFF
 Screenshot_2022-11-21_17-33-20_OLTF.pngScreenshot_2022-11-21_17-45-25_MICHBHDDisplacement.png 
  17293   Mon Nov 21 15:16:12 2022 TegaUpdateCDSworkstation upgradeWe are currently working on donatella workstation
upgrade, which we are calling donatellaclone
for now. After installing Debian 11, we install
  
  17292   Mon Nov 21 14:55:58 2022 JCConfigurationGeneralLED Instead of Incandescent Lights Electrical came by today to see the lights.
The issue may be the switches, but they will
come by tomorrow to solve the issue. A couple
  
  17291   Mon Nov 21 11:52:50 2022 RadhikaSummaryCalibrationSingle arm cal with 5 lines[Paco, Radhika]

We set out to realign the YARM
AUX laser input into the arm cavity.
  
  17290   Mon Nov 21 09:13:31 2022 JCUpdatePSLPMC input beam aligned again, IMC [JC, Paco]

I attempted to align PMC Beam from
a transmission of 0.72. I failed to do so
  
  17289   Sun Nov 20 13:42:21 2022 AnchalUpdateSUSIMC testI repeated this test for the following
configuration:


PSL shutter closed at good
  
  17288   Fri Nov 18 23:21:54 2022 ranaUpdateASCIMC WFS ongoingOn Wednesday, I did some rework of the
MC WFS gains. I think it should still work
as before as long as the overall input gain
  
  17287   Fri Nov 18 22:46:02 2022 yutaSummaryBHDMICH optical gain measurements with different LO phases, with signsMICH
optical gain with a sign was measured with
different LO phases over ~180 degrees, with
 UncalibratedMICHOpticalGainVSLOphase20221118.pngCalibratedMICHOpticalGainVSLOphase20221118.png 
  17286   Fri Nov 18 17:00:15 2022 AnchalUpdateSUSMC1 and MC3 OSEMs calibrated using MC_FAfter the MC1 osem dewhitening was fixed,
I did the calibration of MC1 OSEM signals
using MC_F using this notebook.
  
  17285   Fri Nov 18 16:58:39 2022 yutaSummaryBHDActuator calibrations for MICH BHDAs there is some confusion in actuator
calibration, we have done the measurement
again from scratch.
 7x 
  17284   Fri Nov 18 13:05:00 2022 yutaSummaryBHDGains adjusted for bandstop filters for BHD optics[Paco, Yuta]

We realized that bandstop filters
 Screenshot_2022-11-18_13-16-31_AS1ViolinFilters.png 
  17283   Fri Nov 18 09:00:27 2022 JCUpdateVACPressure Gauge InformationI bought the spare Full-Range Pirani Gauge
a while ago and realized that I never logged
this. The Pirani Gauges we are using is described
  
  17282   Thu Nov 17 20:02:10 2022 yutaSummaryBHDMICH optical gain measurements with different LO phasesMICH
optical gain was measured with different
LO phases over ~90 degrees.
 UncalibratedMICHOpticalGainVSLOphase20221117.pngCalibratedMICHOpticalGainVSLOphase20221117.png 
  17281   Thu Nov 17 16:48:07 2022 AnchalFrogsComputer Scripts / ProgramsFSS SLOW servo running NowI've moved the FSS Slow PID script
running to megatron through systemd daemons.
The script is working as expected right now.
  
  17280   Thu Nov 17 15:53:47 2022 JCConfigurationCamerasITMX Camera -- attempt at fixThe issue was the power supply.

  
  17279   Thu Nov 17 14:12:58 2022 yutaSummaryBHDOptical gain calibrations for BHD MICH with lower UGF[Paco, Yuta]

We found that MICH UGF was unexpectedly
 Screenshot_2022-11-17_14-39-17_MICHLOPHASEOLTF.pngScreenshot_2022-11-17_14-41-40_LowUGFConfiguration.png 
  17278   Thu Nov 17 12:24:48 2022 PacoConfigurationCamerasITMX Camera -- attempt at fixI found that an old BNC cable for ITMXF
video existed so I first tried swapping both
ends of the cable, one on the ITMX viewport
  
  17277   Thu Nov 17 11:24:39 2022 JCHowToLSCLocking MICH[Yuta, JC]

Here is the Yuta's Alignment
Scheme from elog
  
  17276   Thu Nov 17 09:06:35 2022 JCSummaryGeneralLight ReplaceElectrical Shop came in today to replace
the lightbulbs around 40m. I supervised the
entire visit, inside and outside the lab
  
  17275   Thu Nov 17 07:39:01 2022 JCConfigurationCamerasITMX CameraComing in this morning, I found ITMX Camera
malfunctioning.
  
  17274   Wed Nov 16 18:41:17 2022 yutaSummaryBHDOptical gain calibrations for BHD MICHOptical gains of AS55 and BH55 are calibrated
for BHD MICH.

LO-ITM single bounce:
 Screenshot_2022-11-16_18-57-12.pngScreenshot_2022-11-16_18-49-53_BHDMICHCalLines.pngLSC-AS55_Q_ERR_DQ_1352689642.png 
  17273   Wed Nov 16 15:09:08 2022 yutaUpdateBHDBHD fringe contrast measured with unwhitening filtersBHD fringe visibility was measured again
with unwhitening filters on on BHDC_A and
B, which removed signal leakage to zero (
 ContrastMeasurements20221116_edited.pdf 
  17272   Wed Nov 16 12:53:36 2022 ranaUpdateASCIMC WFS ongoingIn the middle of aportioning gains and
signs in the IMC WFS screen, so beware. More
updates soon.
  
  17271   Wed Nov 16 11:56:21 2022 RadhikaUpdatePSLPMC input beam aligned again, IMC [Yuta, JC, Radhika]

PMC input beam was aligned again,
bringing transmission from 0.70 to ~0.75.
 Screen_Shot_2022-11-16_at_12.04.18_PM.png 
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