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IDdown Date Author Type Category Subject Text Attachments
  16457   Mon Nov 8 17:52:22 2021 Ian MacMillanUpdateSUSSetting up suspension test model[Ian, Tega]

We combined a controler and a plant
model into a single modle (See first attachment)
 x1sus_cp.png 
  16456   Mon Nov 8 17:22:27 2021 YehonathanUpdateBHDSOS assemblyBig Gluing
Day
 Magnets_Positions.pngAdapters_Order.png 
  16455   Mon Nov 8 15:29:05 2021 PacoSummaryBHD1Y1 rack work; New power for cameras[Paco, Anchal]

In reference to Koji's concern
(see previous elog), we have completely removed
  
  16454   Mon Nov 8 13:13:00 2021 KojiSummaryBHD1Y1 rack work; Sorensens removedUpdated the rack layout. Now there is an
issue.
We were supposed to have 1U space
 40m_BHD.png 
  16453   Mon Nov 8 10:13:52 2021 PacoSummaryBHD1Y1 rack work; Sorensens removed[Paco, Chub]

Removed all sorensen power supplies
from this rack except for 12 VDC one; that
  
  16452   Fri Nov 5 20:35:10 2021 KojiUpdateBHDFeedthru / Optical Mounts- New feedthrus [4xDB25 Qty 4 / 8xDB25
Qty 1] are placed on the wire shelf at the
entrance -> Jordan, please clean them.
 P_20211105_200817.jpg 
  16451   Fri Nov 5 12:49:32 2021 ranaUpdateSUSSetting up suspension test modelPlease don't put it on c1sus2. Put
it on the completely independent test stand
as we discussed Wednesday. You must
  
  16450   Fri Nov 5 12:21:16 2021 AnchalSummaryBHDPart VI of BHR upgrade - Removal of ITMYC opticsToday I opened the ITMY chamber and removed
the following optics and placed them in Xend
flow bench (See attachment 1-3 for updated
 XendFlowBenchLeftEnd.jpgXendFlowBenchMiddle.jpgXendFlowBenchRightEnd.jpg 
  16449   Thu Nov 4 18:29:51 2021 TegaUpdateSUSSetting up suspension test model[Ian,Tega]

Today we continued working on setting
up the 6 degrees of freedom model for
  
  16448   Thu Nov 4 15:03:43 2021 KojiSummaryBHD1Y1 rack workI have visited the binder file for the
40m wiring file in the control room.
The 12V power supply on 1Y1 is for
  
  16447   Wed Nov 3 16:55:23 2021 Ian MacMillanSummarySUSSUS Plant Plan for New Optics[Ian, Tega, Raj]

This is the rough plan for the
testing of the new suspension models with
  
  16446   Tue Nov 2 22:50:30 2021 KojiUpdateBHDSOS assembly2.5Hz is surprising. Can you move it down
to sub 1Hz by adding a socket cap screw at
the top instead of the set screw for the
  
  16445   Tue Nov 2 18:54:41 2021 Anchal, PacoUpdateBHDOptical fibres laid for BHD upgradeWe successfully laid down all required
optical fibre fiber cables from 1X4-1X7
region to 1Y1-1Y3 region today. This includes
  
  16444   Tue Nov 2 16:42:00 2021 PacoSummaryBHD1Y1 rack work[paco, ian]

After the new 1Y0 rack was placed
near the 1Y1 rack by Chub and Anchal, today
  
  16443   Tue Nov 2 15:02:03 2021 YehonathanUpdateBHDSOS assembly{Yehonathan, Tega}

We took the free-swinging spectra
of the OpLev in the X and Y direction.
 FreeSwingingSpectra.pdf 
  16442   Mon Nov 1 14:51:34 2021 KojiUpdateGeneralChecking the vent planThe vent team described
a detailed vent plan (and reports where the
actions have been performed)
  
  16441   Sun Oct 31 14:21:31 2021 ranaHowToTreasureIFOCadIFOcad model/video of the AEI 10m interferometer:

https://10m.aei.mpg.de/design-and-sensitivity/
  
  16440   Fri Oct 29 14:39:37 2021 AnchalSummaryBHD1Y1 cleared. IY3 ready for C1SUS2 I/O and FE.[Anchal, Paco]

We cleared 1Y1 rack today removing
the following items. This stuff is sitting
 RemovedStuff.jpeg1Y1.jpeg1Y3.jpeg 
  16439   Thu Oct 28 23:13:19 2021 YehonathanUpdateBHDSOS assembly{Tega, Yehonathan, Koji}

Suspension
 OpLev_Setup.jpgsuspended_optic.png20211029_113011.jpg20211029_113052.jpg 
  16438   Thu Oct 28 17:01:54 2021 AnchalSummaryBHDPart III of BHR upgrade - Adding temp fixed flat mirror for PR2[Anchal, Paco, Ian]


We added a Y1-2037-0 mirror
(former IPPOS SM2 mirror) on a fixed mount
  
  16437   Thu Oct 28 16:32:32 2021 PacoSummaryBHDPart IV of BHR upgrade - Removal of BSC eastern optics[Ian, Paco, Anchal]

We turned off the BSC oplev laser
by turning the key counterclockwise. Ian
  
  16436   Wed Oct 27 19:34:52 2021 KojiSummaryElectronicsNew electronics racks1. The rack we cleaned today (came from
West Bridge) will be placed between 1X3 and
1X4, right next to 1X4 (after removing the
 P_20211027_180737.jpgP_20211027_180443.jpgP_20211027_180408.jpgP_20211027_180139.jpg 
  16435   Wed Oct 27 18:16:45 2021 KojiSummaryBHDPart II of BHR upgrade - Relocation of TT2 and MMT1/2 alignment- Moving the MMT2 south by a cm is fine.
This will give you ~0.5cm at TT1 without
changing the other alignment much.
  
  16434   Wed Oct 27 18:11:37 2021 KojiSummaryBHDPart II of BHR upgrade - Relocation of TT2 and MMT1/2 alignmentClosed the PSL shutter @18:11
During the vent, we want to keep the
cavity unlocked if not necessary.
  
  16433   Wed Oct 27 16:38:02 2021 AnchalSummaryBHDPart II of BHR upgrade - Relocation of TT2 and MMT1/2 alignment[Anchal, Paco]

We opened BSC and Injection Chamber
doors. We removed two stacked counterweights
  
  16432   Wed Oct 27 16:31:35 2021 AnchalSummaryBHDPart III of BHR upgrade - Removal of PR2 Small SuspensionI went inside the ITMX Chamber to read
off specs from PR2 edge. This was required
to confirm our calculations of LO power for
  
  16431   Wed Oct 27 16:27:16 2021 AnchalSummaryBHDPart II of BHR upgrade - Prep[Anchal, Paco, Ian]

Before we could start working on
Part II, which is to relocate TT2 to new
 OMCNorthBefore.jpegOMCNorthAfter.jpeg 
  16430   Tue Oct 26 18:24:00 2021 Ian MacMillanSummaryCDSc1sus2 DAC to ADC test[Ian, Anchal, Paco]

After the Koji found that there
was a
 data2_Plots.pdfdata3_Plots.pdf 
  16429   Tue Oct 26 16:56:22 2021 PacoSummaryBHDPart I of BHR upgrade - Locked PMC and IMC[Paco, Ian]

We opened
  
  16428   Tue Oct 26 14:53:24 2021 KojiUpdateElectronicsRack1. We have a rack at the 40m storage. We
are free to take it to the lab. If there
is a tag, tell the info to Liz. Let's
 P_20211026_143814.jpg 
  16427   Tue Oct 26 13:27:07 2021 TegaSummaryElectronicsSat Amp modification SummaryModifications and testing of SatAmp
units COMPLETE. Attachments 1 & 2 show
all 19 units, one installed unit and the
 SapAmpModStack.jpgSatAmpInstalled.jpg 
  16426   Tue Oct 26 10:17:14 2021 YehonathanUpdateBHDSOS assemblyThings that I need to start suspending
optics:

1. Winch adapter plate (D970314).
  
  16425   Mon Oct 25 17:37:42 2021 AnchalSummaryBHDPart I of BHR upgrade - Removed optics from BSC[Anchal, Paco, Ian]


Clean room etiquettes


Two
people in coverall suits, head covers, masks
 rn_image_picker_lib_temp_44cb790a-c3b4-42aa-8907-2f9787a02acd.jpgrn_image_picker_lib_temp_0fd8f4fd-64ae-4ccd-8422-cfe929d4eeee.jpg 
  16424   Mon Oct 25 13:23:45 2021 AnchalSummaryBHDBefore photos of BSC[Yehonathan, Anchal]

On thursday Oct 21 2021, Yehonathan
and I opened the door to BSC and took some
  
  16423   Fri Oct 22 17:35:08 2021 Ian MacMillanSummaryPEMParticle counter setup near BS ChamberI have done some reading about where would
be the best place to put the particle counter.
The ISO standard (14644-1:2015) for
  
  16422   Thu Oct 21 15:24:35 2021 ranaSummaryPEMParticle counter setup near BS Chamberrethinking what I said on Wednesday - its
not a good idea
to put the particle counter on a vac chamber
  
  16421   Thu Oct 21 15:22:35 2021 ranaSummaryPEMParticle counter setup near BS ChamberSVG doesn't work in my browser(s).
Can we use PDF as our standard for all graphics
other than photos (PNG/JPG) ?
  
  16420   Thu Oct 21 11:41:31 2021 AnchalSummaryPEMParticle counter setup near BS ChamberThe particle count channel names were changes
yesterday to follow naming conventions used
at the sites. Following are the new names:
 ParticleCountData20211021.pdf 
  16419   Thu Oct 21 11:38:43 2021 JordanUpdateSUSStandoffs for Side Magnet on 3" Adapter Ring SOS AssemblyI had 8 standoffs made at the Caltech chemistry
machine shop to be used as spacers for the
side magnets on the 3" Ring assembly.
 Magnet_Standoffs.jpg 
  16418   Wed Oct 20 15:58:27 2021 KojiUpdateVACHow to vent TP1Probably the hard disk of c0rga is dead.
I'll follow up in this elog later today.

Looking at the log in /opt/rtcds/caltech/c1/scripts/RGA/logs
  
  16417   Wed Oct 20 11:48:27 2021 AnchalSummaryCDSPower supple configured correctly.This was horrible! That's my bad, I
should have checked the configuration before
assuming that it is right.
  
  16416   Wed Oct 20 11:16:21 2021 AnchalSummaryPEMParticle counter setup near BS ChamberI have placed a GT321 particle counter
on top of the MC1/MC3 chamber next to the
BS chamber. The serial cable is connected
 PXL_20211020_183728734.jpg 
  16415   Tue Oct 19 23:43:09 2021 KojiSummaryCDSc1sus2 DAC to ADC test(Because of a totally unrelated reason)
I was checking the electronics units for
the upgrade. And I realized that
 P_20211019_224433.jpgP_20211019_224122.jpgP_20211019_224400.jpgP_20211019_224411.jpg 
  16414   Tue Oct 19 18:20:33 2021 Ian MacMillanSummaryCDSc1sus2 DAC to ADC testI ran a DAC to ADC test on c1sus2 channels
where I hooked up the outputs on the DAC
to the input channels on the ADC. We used
 data3_Plots.pdfdata2_Plots.pdf 
  16413   Tue Oct 19 11:30:39 2021 KojiUpdateVACHow to vent TP1I learned that TP1 was vented through the
RGA room in the past. This can be done by
opening VM2 and a manual valve ("needle
 Screen_Shot_2021-10-18_at_14.52.34.png 
  16412   Tue Oct 19 10:59:09 2021 KojiUpdateVACVent Started / Completed[Chub, Jordan, Yehonathan, Anchal,
Koji]

North door of the BS chamber opened
  
  16411   Mon Oct 18 16:48:32 2021 TegaUpdateElectronicsSat Amp modifications[S2100738, S2100745, S2100751] Completed
three more Sat Amp units modification with
seven remaining.
 IMG_20211018_162918574.jpg 
  16410   Mon Oct 18 10:02:17 2021 KojiUpdateVACVent Started / Completed[Chub, Jordan, Anchal, Koji]

- Checked the main volume is isolated.
- TP1 and TP2 were made isolated from
 Screen_Shot_2021-10-18_at_14.52.34.pngScreenshot_2021-10-18_15-08-59.png 
  16409   Fri Oct 15 20:53:49 2021 KojiSummaryGeneralVent PrepFrom
the IFO point of view, all look good and
we are ready for venting from Mon Oct 18
  
  16408   Fri Oct 15 17:17:51 2021 KojiSummaryGeneralVent PrepI took over the vent prep: I'm going
through the list in [ELOG
15649] and [ELOG
 7x 
ELOG V3.1.3-