40m QIL Cryo_Lab CTN SUS_Lab CAML OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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New entries since:Wed Dec 31 16:00:00 1969
IDup Date Author Type Category Subject Text Attachments
  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
  17979   Wed Nov 15 15:49:34 2023 JCUpdateDaily ProgressInput Chamber Door Removed[Koji, Paco, JC]

The door of the Input
  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
  17981   Wed Nov 15 18:50:23 2023 RadhikaUpdateGeneralREFL path bug hunting[Paco, Vittoria, Radhika]

Yesterday and today I noticed that REFLDC/REFL
  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
  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
  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
  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
  17986   Fri Nov 17 17:27:19 2023 VittoriaUpdateGeneralPRMI Flashing Recovered; PRM OPLEV Centered[Yuta, Vittoria, Radhika]

PRMI flashing recovered;
  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
  17988   Wed Nov 22 19:55:21 2023 KojiUpdateBHDBHD Platform Inventory
PDR1V rotation stage was found
pedestal post x Qty 1 / top and bottom vent
holes machined -> to be C&Bed
  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
  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
  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
  17992   Tue Nov 28 11:56:06 2023 RadhikaUpdateGeneralVertex optics alignment OKHorizontal beam centering
along XARM

I tried to improve
  17993   Tue Nov 28 14:37:00 2023 KojiUpdateGeneralLab TempLab temperature trend for 20 and
400 days:

- The lab temp significantly raised
  17994   Tue Nov 28 17:24:44 2023 RadhikaUpdateGeneralLO/POP beams aligned[Paco, Vittoria, Murtaza, Radhika]

LO/POP alignment

  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)
  17996   Tue Nov 28 19:47:22 2023 RadhikaUpdateBHDBHD Optics moved to BHD cleanroomAS2/AS3/BHD BS/LO3/LO4
moved to BHD cleanroom

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

[Done] SUSs aligned: TTs
  17999   Thu Nov 30 09:55:12 2023 JCUpdateGeneralLab TempI made modifications to the thermostats
this morning in the lab:

X Arm
  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.
  18001   Thu Nov 30 14:25:42 2023 RadhikaUpdateGeneralLab TempYEND thermostat was restored from 67
°F ---> 69 °F.
  18002   Thu Nov 30 15:08:23 2023 RadhikaSummaryElectronicsPRM UL sensor counts normal[Murtaza, Radhika]

PRM UL counts normal

  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
  18004   Fri Dec 1 02:16:39 2023 KojiUpdateBHDBHD Optics moved to BHD cleanroom / More OMC locking
AS3/LO3 were assembled (Attachment
The BHD Platform extension
plate was attached to the platform. This
  18005   Fri Dec 1 08:38:32 2023 JCUpdateBHDBHD Platform PartsProductive
Day for C&B

Beam Dump
Bases (D1102371), PEEK Shims D1102372, Two
  18006   Fri Dec 1 22:30:42 2023 KojiUpdateBHDBHD Optics moved to BHD cleanroom / More OMC lockingI've finished more BHD optic mounts:
- Downstream HWP
  18007   Mon Dec 4 14:56:01 2023 JCUpdateVACVac Maintenance Work.TP1
has been reinstalled and TP2 investigation
has begun

This morning,
  18008   Mon Dec 4 21:02:20 2023 KojiUpdateGeneralLab TempLooks like the last setting change didn't
make any effect.
  18009   Tue Dec 5 00:58:25 2023 KojiUpdateBHDMost of the BHD Optics populated / OMC mode matching / OMC servo actuator rangePopulating
the BHD Optics

Mounted Thorlabs NB1-K14
  18010   Tue Dec 5 10:15:10 2023 KojiUpdateGeneral40m BHD current status / plan To Do list clean up. Here is the latest

  18011   Tue Dec 5 10:27:31 2023 RadhikaSummaryGeneralAS beam alignmentWait for ITMY chamber
leveling to verify AS alignment?

  18012   Tue Dec 5 14:20:57 2023 RadhikaSummaryCDSAdded EPICS channels for lab temperature in F[Yuta, Paco, Radhika]

Fahrenheit lab temperature
  18013   Tue Dec 5 16:41:49 2023 KojiUpdateGeneralLab TempI made a stone-age air flow sensor (stick
and a flag) to see if the A/C is actually
doing anything. (I know that the photos do
  18014   Tue Dec 5 17:10:07 2023 PacoUpdateGeneralTP2[Koji, Paco]

We spent some time investigating
the TP2 situation. Basically, the issue is
  18015   Tue Dec 5 17:37:41 2023 KojiUpdateBHDFaraday Base issuesWe got Faraday Rotator Base (D2200378)
and it came back from the C&B.

I tried to build the assembly and
  18016   Wed Dec 6 10:16:39 2023 JCUpdateGeneralSpecgramSpectrograph

After a good amount
of fiddling around with the spectrogram code
  18017   Wed Dec 6 15:32:08 2023 JCUpdateGeneralUPS Battery Replacement Koji and I replaced the batteries
to the SMART-UPS in the control room.
The batteries which were replaced
  18018   Wed Dec 6 15:52:11 2023 RadhikaSummaryGeneralITMY table levelingITMY table re-leveled;
AS1 damping restored

  18019   Thu Dec 7 13:00:58 2023 KojiUpdateGeneralLab TempJC told us that facility came in this morning
and restored the operation of the HVAC. The
lab temps started to decrease. The attached
  18020   Thu Dec 7 13:14:43 2023 RadhikaUpdateGeneralLab Temp; PMC TRANS dropped[4 week trend added]

Paco noticed that PMC transmission
started to drop this morning after the AC
  18021   Thu Dec 7 15:00:44 2023 JCUpdateGeneralLab TempFacilities came by this morning to work
on the HVAC at 7:30 am.

At 8:00 am, the tech came down
  18022   Thu Dec 7 16:38:25 2023 JCUpdateVACBHD OMC Vent
FRG 1 has Changed with the Back-Up

I changed the FRG 1 gauge to the back-up
  18023   Thu Dec 7 16:48:02 2023 JCUpdateBHDMighty Mouse ConnectersMighty Mouse Connector Progress

Dean and I gather the part to install the
Mighty Mouse Connectors. The tools we gather
  18024   Thu Dec 7 20:35:11 2023 KojiUpdateGeneralLab Temp; PMC TRANS droppedI wondered if it comes from the polarization
drift due to the temp change.

The input HWP/QWP and the PBS right
  18025   Fri Dec 8 01:27:49 2023 KojiUpdateBHDDCPD can opening / installationTwo DCPDs (Exelitas C30665GH 3mm) were
installed on OMC1.  These PDs were tested
before. The test results can be found as
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