40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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New entries since:Wed Dec 31 16:00:00 1969
ID Date Authordown Type Category Subject Text Attachments
  412   Thu Jun 23 21:03:33 2022 KojiFacilityGeneralMoving the small optical table to CAML (TCS Lab)I've cleared the small optical table
and wondered how to move it out of the room.
Fortunately, the north side of the big table
 PXL_20220624_035628602.jpg 
  413   Tue Jun 28 16:13:34 2022 KojiGeneralGeneralThe small optical table not small enough to get outThe table width was an inch too large compared
to the door width. We need to tilt the table
and it seemed too much for us. Let's
 IMG-5203.jpg 
  414   Fri Jul 15 22:14:14 2022 KojiGeneralGeneralOMC Lab recovery for the OMC #002 test- The lab is chilly (18degC)

- Cleaned the lab and the optical
table a bit so that the delicate work can
 PXL_20220716_035922673.jpgPXL_20220716_025319391.MP.jpgPXL_20220716_025334324.jpgPXL_20220716_035309066.jpgPXL_20220716_035411435.NIGHT.jpg 
  415   Mon Jul 18 14:20:09 2022 KojiGeneralGeneralOMC #002 Plan Portal==
Initial Preparation ==


[Done] OMC #002
  
  416   Tue Jul 19 03:17:56 2022 KojiGeneralGeneralOMC #002 Power Budget before mirror cleaningo Power Budget (2022/07/18)
NPRO ADJ -50 (min)
Fiber incident 62.8mW
  
  417   Thu Jul 21 02:55:06 2022 KojiGeneralGeneralOMC #002 Power Budget after mirror cleaningo Power Budget after FirstContact
cleaning (2022/07/20)
NPRO ADJ -50 (min)
  
  418   Thu Jul 21 13:21:27 2022 KojiGeneralConfigurationWindows laptop for WincamD Beam'R2 recoveryThe Windows laptop for WincamD/Beam'R2
(DELL Vostro3300) was not functional. 
- Windows 7 got stuck in the starting
 IMG_1102.JPG 
  419   Thu Jul 21 14:35:35 2022 KojiGeneralGeneralBond reinforcement blocks for the invar bracketsBond reinforcement blocks for the
invar brackets:


Attachment 1:
 IMG_1095.JPGIMG_1091.JPG 
  420   Thu Jul 21 14:55:48 2022 KojiGeneralGeneralOptics bonding for the backscatter measurementThe backscatter beam is supposed to appear
in the backpropagation path. The transmission
of the OMC has a couple of optics, it's
 IMG_1098.JPG 
  421   Thu Jul 21 17:47:00 2022 KojiGeneralGeneralThe profile of the beam incident on the fiber input couplerThe profile of the beam incident on the
fiber input

The fiber input was deflected by
 fiber_beam_profile.pdf 
  422   Fri Jul 22 00:31:17 2022 KojiGeneralGeneralOMC #002 backscatter measurementMeasure the power ratio between the forward-propagating
and reverse-propagating beams.


Place a small deflecting
 OMC_backscatter.pdf 
  423   Fri Jul 22 17:41:01 2022 KojiGeneralGeneralSRS LCR meter SRS720 returned to DownsSRS LCR meter SRS720 was returned to Downs
as before.

 
 PXL_20220723_002330805.jpg 
  424   Fri Jul 22 17:47:38 2022 KojiGeneralGeneralC&B request for the reinforcement blocksOMC Reinforcement blocks

1. P/N D1600316; Version v4; Type
01; Qty 30; Source Chemistry Machine Shop
 PXL_20220722_222013127.jpg 
  425   Mon Jul 25 18:25:04 2022 KojiGeneralGeneralA/C Filter was replaced
New filter PN
Grainger
TK70457312T Mini-Pleat Air Filter,
  
  426   Tue Jul 26 00:01:59 2022 KojiGeneralGeneralOMC #002 delamination check 2More epoxy delamination check:

DCPD R (Attachment 1):
Found half delaminated
 IMG_1106.JPGIMG_1107.JPGIMG_1110.JPG 
  427   Tue Jul 26 00:12:58 2022 KojiGeneralGeneralHigh QE PD: QE measurements- Installed the High QE PDs to OMC #002


B1-22@Cage B1 was
installed to the transmission DCPD
B1-23@Cage
 IMG_1118.JPG 
  428   Wed Jul 27 10:09:51 2022 KojiGeneralGeneral4+4 wire clamp in handRegarding: D1200971

- 4 CLASS A wire clamp obtained
 PXL_20220727_072154009.jpg 
  429   Wed Jul 27 10:34:09 2022 KojiGeneralGeneralHigh QE PD: QE measurements 2- DLPCA-200 trans-impedance amplifier was
calibrated.
  Keithley source meter 2450
 IMG_1119.JPGIMG_1120.JPG 
  430   Wed Jul 27 10:34:30 2022 KojiGeneralGeneralOMC #002 Protective FirstContact PaintThe optical surfaces were coated with FirstContact
to keep them clean / somewhat protected during
the transportation.
 IMG_1125.JPG 
  431   Wed Jul 27 23:52:18 2022 KojiGeneralGeneralOMC #002 Cable bracket replacement (1)Parts
check

- D1300052-V3 SN001 is going to
 IMG_1126.JPGIMG_1135.JPGIMG_1127.JPGIMG_1129.JPGIMG_1130.JPG 
  432   Thu Jul 28 00:28:15 2022 KojiGeneralGeneral OMC #002 Cable bracket replacement (2) Connector
unmounting

- (Attachment 1)
 IMG_1132.JPGIMG_1133.JPGIMG_1136.JPG 
  433   Thu Jul 28 00:46:47 2022 KojiGeneralGeneral Subject: OMC #002 Cable bracket replacement (3)Checking the spare parts 

- Conclusion for OMC#2:
need PEEK cable
 IMG_1137.JPGIMG_1148.JPGIMG_1138.JPG 
  434   Wed Aug 10 18:42:27 2022 KojiGeneralGeneralOMC #002 Cable bracket replacement (4)[Stephen Koji]

Now we got the C&Bed parts
to continue to work on the cable bracket
 PXL_20220809_235457354.jpgPXL_20220811_011910569.jpgPXL_20220811_013746139.jpg 
  435   Thu Aug 11 15:24:57 2022 KojiGeneralGeneralOMC #002 Cable bracket replacement (5)- The hole size extension
is going forwared now.
  
  436   Mon Aug 15 21:31:56 2022 KojiGeneralGeneralOMC #002 Cable bracket replacement (6) The cable bracket was successfully
replaced.


Looking from the QPD side
 IMG_1155.JPGIMG_1149.JPGIMG_1150.JPG 
  437   Mon Aug 15 22:06:18 2022 KojiGeneralGeneralOMC #002 new cable tie installed[Stephen Koji]

New cable ties were installed on
the cable pegs attached to the long sides
 IMG_1929.JPGIMG_1930.JPG 
  438   Mon Aug 15 22:43:35 2022 KojiGeneralGeneralOMC #002 Delamination repair Part1 (1)[Stephen Koji]

Checked the delamination
status:
 IMG_1926.JPGPXL_20220816_011346581.jpg 
  439   Mon Aug 15 22:49:03 2022 KojiGeneralGeneralOMC #002 Delamination repair Part1 (2)EP30-2
preparation


Two Al foil cups + A sheet
 7x 
  440   Wed Aug 24 02:51:23 2022 KojiGeneralGeneralOMC #002 Delamination repair Part1 (3)Inspection of the bonding on the
suspension interface side. All look good.
 8x 
  441   Wed Aug 24 02:53:46 2022 KojiGeneralGeneralOMC #002 Delamination repair Part2 (1)Inspection of the delaminations in the
optics side
 IMG_1168.JPGIMG_1169.JPGIMG_1170.JPGIMG_1171.JPGIMG_1175.JPG 
  442   Wed Aug 24 02:57:43 2022 KojiGeneralGeneralEP30-2 bonding setupEP30-2 bonding setup  IMG_1178.JPGIMG_1179.JPGIMG_1180.JPG 
  443   Wed Aug 24 03:20:59 2022 KojiGeneralGeneralOMC #002 Delamination repair Part2 (2)Bonding  11x 
  444   Wed Aug 24 03:26:43 2022 KojiGeneralGeneralOMC #002 Delamination repair Part2 (3)Inspection

 
 8x 
  445   Wed Aug 24 11:29:47 2022 KojiGeneralGeneralOMC #002 ready for shipment[Stephen Koji]

The OMC #002 is ready for
shipment.
 IMG_1207.JPGPXL_20220825_004259850.jpgPXL_20220825_004307204.jpgPXL_20220825_005423342.jpgPXL_20220825_005549985.jpg 
  446   Thu Aug 25 14:22:08 2022 KojiGeneralGeneralLLO OMC #001 Ballast Mass investigationInspected the past LLO add-on mass configuration.

There are unknown masses at the
DCPD side. It looks like a small SS mass
 DSCN0917.JPGDSCN0922.JPGP6108705.JPGP6108707.JPGP6108706.JPG 
  447   Thu Aug 25 20:05:00 2022 KojiGeneralGeneralLLO OMC #001 Ballast Mass investigationHere is the balance mass info for the LLO
OMC#001 analyzed from the photographs


Added masses are: 50+10g,
 balance_mass_config_LLO.pdf 
  448   Fri Aug 26 22:29:02 2022 KojiGeneralGeneralTool Shipping PrepShipping preparation for the LLO
trip

Started
July 15, 2022 and finished Aug 30. So it
 PXL_20220831_025623318.jpgPXL_20220831_024518032.jpgPXL_20220831_030234581.jpg 
  449   Tue Sep 20 08:54:33 2022 KojiGeneralGeneralPD cage arrangementUpon the LLO work, the current PD arrangement
in the cages are:
CAGE B
  
  450   Mon Sep 26 14:27:49 2022 KojiGeneralGeneralLLO OMC ICS workOMC
#001


ICS Link: https://ics.ligo-la.caltech.edu/JIRA/browse/ASSY-D1201439-1
Already
  
  346   Thu Apr 18 20:47:54 2019 JoeOptics OMC initial alignment and locking[Joe, Phillip, Koji, Stephen]

*draft post, please add anymore
info if I missed something*
 IMG_7676.JPGIMG_7666.JPGIMG_7670.JPGIMG_7883.JPGIMG_7882.JPG 
  348   Fri Apr 19 09:35:28 2019 JoeGeneral Adjusting cavity axis, re-alignment of OMC and locking[koji,philip,
joe, liyuan,
steven]
 FSR_Scan_Fitfsrdata.pdfIMG_7679_cropped.jpg 
  351   Mon Apr 22 09:54:21 2019 JoeGeneral Shortening cavity (A5,A14,PZT11,PZT22) to get closer to design FSR[Koji,Joe,Philip,stephen]

in units 20um per div on the micrometer
[n.b. we reailised that its 10um per div
 CM1_IMG_7699.jpgCM2_IMG_7697.jpg 
  353   Tue Apr 23 10:21:12 2019 JoeOpticsConfigurationMoving the spots to the centre of the curved mirrors[Koji,Philip, Liyuan, Joe]

CM1:

We moved the curved mirrors to
 FSR_detuned_locking.pdfCM1_IMG_7702.JPGCM2_IMG_7704.JPG 
  354   Wed Apr 24 13:58:51 2019 JoeOpticsCharacterizationOMC power budget and UV Epoxy Bonding of BS1[koji,philip,joe,liyuan,stephen]

need to add spot positions.

Mirrors: PZT11,PZT22, A14, A5
  
  355   Thu Apr 25 15:05:19 2019 JoeOpticsCharacterizationLooking at PZT HOM spacing dependance and thinking about workflow[koji, joe]

The template or glass breadboard
was wobbling, and we noticed that the caivty
  
  144   Fri Jun 14 06:35:21 2013 JeffGeneralGeneral[LLO] L1 OMC statushttps://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=7410
Weights:
Suspension cage and transportation
 preamp_arrangement.png 
  362   Thu May 16 12:41:28 2019 ChubGeneralGeneralfire pillow found on optics tableThat is an expanding fire pillow, also
known as firebrick.  It is used to create
a fire block where holes in fire-rated walls
  
  309   Thu Sep 27 20:19:15 2018 AaronOpticsGeneralMontecarlo simulation of the phase difference between P and S pols for a modeled HR mirrorI started some analytic calculations of
how OMC mirror motion would add to the noise
in the BHD. I want to make some prettier
  
  310   Thu Nov 1 19:57:32 2018 AaronOpticsGeneralMontecarlo simulation of the phase difference between P and S pols for a modeled HR mirrorI'm still not satisfied/done with the
solution to this, but this has gone too long
without an update and anyway probably someone
  
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