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ID Date Author Type Category Subject Text Attachments
  18003   Thu Nov 30 17:35:37 2023 KojiUpdateGeneralMissing PEM signals -> fixedI
saw FB1 was pushed into the rack
(Attachment 1). Thank you very much for the
 PXL_20231201_013117709.jpgPXL_20231201_013048563.jpgPXL_20231201_013557947.jpg 
  18002   Thu Nov 30 15:08:23 2023 RadhikaSummaryElectronicsPRM UL sensor counts normal[Murtaza, Radhika]

PRM UL counts normal

We
 IMG_6190.JPGIMG_6189.JPG 
  18001   Thu Nov 30 14:25:42 2023 RadhikaUpdateGeneralLab TempYEND thermostat was restored from 67
°F ---> 69 °F.
  
  18000   Thu Nov 30 13:22:43 2023 KojiUpdateGeneralLab TempThe attached was the 2 days trend

Maybe I said X and Y moxed up in
the meeting? The Yend A/C is the good one.
 Screenshot_2023-11-30_at_13.22.25.png 
  17999   Thu Nov 30 09:55:12 2023 JCUpdateGeneralLab TempI made modifications to the thermostats
this morning in the lab:

X Arm
  
  17998   Wed Nov 29 18:45:54 2023 KojiUpdateGeneral40m BHD current status / plan In-vac
alignment / clipping


[Done] SUSs aligned: TTs
  
  17997   Wed Nov 29 12:53:25 2023 JCUpdateFrequency noise measurementSpectrogram Using GWpyI started using this new code that Rana
and I got from a random Git. It is for a
Live Specgram. I was finally able to get
 Screenshot_2023-11-29_at_3.45.04_PM.png 
  17996   Tue Nov 28 19:47:22 2023 RadhikaUpdateBHDBHD Optics moved to BHD cleanroomAS2/AS3/BHD BS/LO3/LO4
moved to BHD cleanroom

Attachment
 ITMY_labeled.pngIMG_6183.JPGIMG_6180.JPGIMG_6181.JPGIMG_6179.JPG 
  17995   Tue Nov 28 18:28:10 2023 KojiUpdateBHDBHD Optics PrepContinued on the BHD Optics Prep:

The following mounts were prepared
(they are not 100% tightened yet)
 PXL_20231129_014120262.jpgPXL_20231129_012724025.jpgPXL_20231129_012936108.jpgPXL_20231129_015555304_2.jpg 
  17994   Tue Nov 28 17:24:44 2023 RadhikaUpdateGeneralLO/POP beams aligned[Paco, Vittoria, Murtaza, Radhika]

LO/POP alignment

We
 7x 
  17993   Tue Nov 28 14:37:00 2023 KojiUpdateGeneralLab TempLab temperature trend for 20 and
400 days:

- The lab temp significantly raised
 Temp_trend_20days.pngTemp_trend_400days.png 
  17992   Tue Nov 28 11:56:06 2023 RadhikaUpdateGeneralVertex optics alignment OKHorizontal beam centering
along XARM

I tried to improve
 IMC_alignment_2023-11-28.pngarm_alignment_2023-11-28.pngarm_alignment_final_2023-11-28.png 
  17991   Tue Nov 28 02:01:38 2023 KojiUpdateBHDOMC lockedThe OMC was locked with Moku Pro.

Attachment 1: Electrical
setup. The RF part of the REFL PD signal
 9x 
  17990   Sun Nov 26 16:06:22 2023 KojiUpdateBHDBHD/OMC table work- Setup the fiber
protection and stray beam shields
- Replaced brand new wedged Y1-45P
 Optical_setup.jpgOverall_setup.jpg 
  17989   Sat Nov 25 19:41:27 2023 KojiUpdateGeneralLab TempVertex is extremely hot. I'm reluctant
to go into the HEPA with clean garbings....

It seems that it started about
 Screen_Shot_2023-11-25_at_7.40.34_PM.png 
  17988   Wed Nov 22 19:55:21 2023 KojiUpdateBHDBHD Platform Inventory
PDR1V rotation stage was found
2"
pedestal post x Qty 1 / top and bottom vent
holes machined -> to be C&Bed
2.5"
 PXL_20231123_033041972.jpg 
  17987   Tue Nov 21 19:02:00 2023 RadhikaUpdateGeneralAll beam spot measurements after in-vacuum alignment work[Yuta, Radhika]

PRY locked and PRM/PR2/PR3
 2023-11-21_PRY_lock.pngvertical_miscentering_PRs.pdfhorizontal_miscentering_PRs.pdfvertical_miscentering_TMs_BS.pdfhorizontal_miscentering_TMs_BS.pdf 
  17986   Fri Nov 17 17:27:19 2023 VittoriaUpdateGeneralPRMI Flashing Recovered; PRM OPLEV Centered[Yuta, Vittoria, Radhika]

PRMI flashing recovered;
  
  17985   Fri Nov 17 13:06:27 2023 KojiUpdateBHDBHD Platform InventoryI went through the inventory list and the
parts in hand to figure out what
was still missing
 E2200464_Parts_Required_for_the_40m_BHD_Platform_(D2100085)_-_Optical_Mounts_Inventory_11_14_2023-2.pdf 
  17984   Thu Nov 16 18:46:30 2023 KojiUpdateGeneralREFL path bug huntingI took over the IFO after Radhika left.
She found the REFL beam earlier and the PRM
alignment offset for the refl beam on the
  
  17983   Thu Nov 16 18:29:52 2023 RadhikaUpdateGeneralREFL path bug huntingToday Yuta and I opened the BS chamber
and found that the REFL beam was misaligned
in pitch and yaw [Attachment 1]. We steered
 IMG_6084.JPGIMG_6099.JPGIMG_6089.JPGIMG_6093.JPG 
  17982   Thu Nov 16 14:39:34 2023 JCUpdateBHDUpdate on BHD Parts and Cleanroom AccomodationsTask Completed Today :


D2200122 Spacer Rings have
been machined and ready for C&B
The
 IMG_0710.jpeg 
  17981   Wed Nov 15 18:50:23 2023 RadhikaUpdateGeneralREFL path bug hunting[Paco, Vittoria, Radhika]

Yesterday and today I noticed that REFLDC/REFL
 REFL_no_light.pngREFLDC_history.png 
  17980   Wed Nov 15 17:37:17 2023 KojiUpdateSUSPRM SUS UL PD not respondingRadhika reported that the PRM UL OSEM PD
is not responding. This PD has been identified
to have a shorting problem, but the short
 PRM_ULSEN.png 
  17979   Wed Nov 15 15:49:34 2023 JCUpdateDaily ProgressInput Chamber Door Removed[Koji, Paco, JC]

The door of the Input
  
  17978   Tue Nov 14 18:30:45 2023 RadhikaUpdateGeneralBeam spot position measurements after in-chamber alignment[Murtaza, Paco, Radhika]

After the input beam path alignment
was complete (arm flashing recovered), we
 vertical_miscentering_TMs_BS.pdfhorizontal_miscentering_TMs_BS.pdf 
  17977   Mon Nov 13 16:08:47 2023 JCUpdateCDSFB1 fan replacement (fb1 alarm)I
checked how FB1 is and it has no alerting
red LED anymore! Great
  
  17976   Mon Nov 13 16:01:17 2023 JCUpdateCDSFB1 fan replacement (fb1 alarm)[KA: Copied from JC's entry on Mon
Nov 13 14:15:40 2023]

 IMG_7405.jpegIMG_7406.jpeg 
  17974   Mon Nov 13 03:14:43 2023 KojiUpdateBHDOMC input beam alignmentTo Do:


Set up the OMC refl optical
path and the refl PD
Set up a
  
  17973   Mon Nov 13 00:53:02 2023 KojiUpdateGeneralEP30-2 kit brought from DownsEP30-2 Kit + Bonding Kit (= Two bottles
of silica powder) were returned to Modal
Lab @ Downs.
 734D8DC8-BA2B-4106-A80F-E587AC130D4F.jpeg 
  17972   Mon Nov 13 00:34:56 2023 KojiUpdateBHDOMC input beam alignmentThe polarization and alignment of the fiber
for the OMC setup were adjusted. The polarization
ratio before the PBS was 50:1. Then, the
 IMG_2596.JPGIMG_2595.JPG 
  17971   Fri Nov 10 20:19:13 2023 KojiSummaryGeneralIn-vacuum beam centering for input opticsNice recovery of the lock!

Do you think the spot distance
at PR2 makes sense if we consider the dispersion?
 ITMY_wedge_1deg.png 
  17970   Fri Nov 10 16:59:15 2023 RadhikaSummaryGeneralIn-vacuum beam centering for input optics[Murtaza, Paco, Shoki, Radhika]

IR arm cavity flashing
 PXL_20231111_005513886.MP.jpgPXL_20231111_005543134.MP.jpgPXL_20231111_005806530.MP.jpgPXL_20231111_005453732.MP.jpg 
  17969   Thu Nov 9 15:18:50 2023 RadhikaSummaryGeneralIn-vacuum beam centering for input optics[Murtaza, Tomo, Paco, Radhika]

LInk to google
photos album for today.
 IMG_5923.JPG2023-11-09_oplev_centering.pngIMG_5978.JPGIMG_5980.JPGIMG_5986.JPG 
  17968   Wed Nov 8 16:57:00 2023 RadhikaSummaryGeneralBeam centering strategies around vertex[Murtaza, Tomo, Radhika]

In preparation for alignment of
vertex optics, went through the exercise
 2023-11-08_low_power_in_air_arm_lock.png2023-11-08_low_power_in_air_settings.png 
  17967   Wed Nov 8 15:14:39 2023 jeffUpdateGeneralAccelerometersI borrowed a small accelerometer from 40m
and walked it to the cryo lab. It is pictured
in attachment 2 in its box.
 image1(2).jpegimage0(3).jpeg 
  17966   Tue Nov 7 17:34:36 2023 yutaSummaryGeneralBeam centering strategies around vertexHere are some beam centering strategies...

Beam height around PRC:
 - From our in-vac inspection
 BeamSpotMeasurement_summary.pdf 
  17965   Tue Nov 7 16:43:49 2023 yutaSummarySUSUntripping software watchdogI made a script to untrip software watchdogs.

/opt/rtcds/caltech/c1/Git/40m/scripts/SUS/untripSoftWatchdog.py
 Screenshot_2023-11-07_16-46-40_WD.png 
  17964   Tue Nov 7 16:29:23 2023 RadhikaUpdateGeneralPhotos and e-level measurements of ITMY/BS/ITMX tables[Yuta, Vittoria, Radhika]

All photo documentation of the
open chambers can be found on the 40m
 IMG_5882.JPGIMG_5904.JPGIMG_5929.JPG 
  17963   Mon Nov 6 23:37:13 2023 KojiUpdateGeneralAux Laser: Interlock SWs and fiberThanks to Murtaza, now we have two emergency
switches for the aux laser. One is on the
PSL table, and the other is in the staging
 PXL_20231107_073229088.jpgPXL_20231107_073216717.jpg 
  17962   Mon Nov 6 21:32:29 2023 PacoUpdateCDSfb1 alarm [Koji, paco]

First, ssh to fb1 and running sudo
dmidecode -t1 we get
 PXL_20231107_055416153.MP.jpgPXL_20231107_060156045.jpg 
  17961   Mon Nov 6 21:21:30 2023 KojiUpdateCDSfb1 alarm
FB1
has this "i" LED blinking and continuously
beeping. What's wrong? 
 PXL_20231107_051924435.jpgPXL_20231107_063145734.jpgPXL_20231107_053401989.jpg 
  17960   Mon Nov 6 12:27:39 2023 yutaUpdateASCBeam spot position measurements at low powerBeam
spot position measurements were done for
the first time in air pressure at low power.
 Screenshot_2023-11-06_12-31-32_PRFPMIBHDaligned.pngBeamSpotMeasurement_summary.pdf 
  17959   Sun Nov 5 14:29:19 2023 aaronUpdateEquipment loanN2 regulator returned to cryoI retrieved the nitrogen pressure regulator
from x arm vacuum cabinet and returned it
to cryo. Reminder to replace the 40m regulator
  
  17958   Fri Nov 3 17:16:14 2023 PacoConfigurationIOOLow power IMC locked[Paco, yuta]

We continued with the alignment
recovery by looking for arm cavity flashing.
 lowpower_arm_lock_20231103.pngScreenshot_2023-11-03_17-39-31_botharms.png 
  17956   Fri Nov 3 17:05:10 2023 PacoConfigurationIOOLow power IMC locked[Paco, yuta]

We opened the PSL shutter and verified
the power behind the shutter is 92 mW. Then,
  
  17955   Fri Nov 3 13:10:58 2023 KojiUpdateVACFRG1/2/5 recalibrated at 1atmAs we found that some of the FRGs were
not well calibrated, Using the driver menu,
I've recalibrated the FRGs exposed
 FRG_CAL.png 
  17954   Fri Nov 3 10:18:21 2023 JCUpdateVACBHD OMC VentThis morning, the goal was to open up the
chamber doors. Yesterday we attempted, but
we did not succeed. Here is a list of the
  
  17953   Thu Nov 2 14:18:04 2023 yutaSummarySUSNew MEDM screens and misalignment scheme in the era of software watchdogsNew
watchdog and suspension summary MEDM screens
were made, and IFO_ALIGN screen was updated.
 Screenshot_2023-11-02_12-37-55_New_Watchdogs.pngScreenshot_2023-11-02_14-24-20_IFOALIGN.pngScreenshot_2023-11-02_14-15-50_SUSSUMMARY.png 
  17952   Thu Nov 2 12:06:49 2023 JCUpdateVACBHD OMC VentAfter swappiong out the cylinders, I went
to review the pressure to check the rate
of the N2, but It looks like
 Vent_11-2-23.pdf 
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