ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
479
|
Sat Jan 28 00:46:21 2023 |
Koji | Mechanics | General | OMC #4: Replaced the locks of the transport fixture | Yesterday, we noticed that we could not
close the transport fixture for OMC #4. We
could not fully rotate the knobs of the locks. |
|
|
478
|
Sat Jan 28 00:38:56 2023 |
Koji | Mechanics | General | OMC #1 cable bracket replacement / OMC #1 repair completed | The AL metal bracket was replaced with
a PEEK version.
Attachments 1/2: Before the replacement. |
|
|
477
|
Thu Jan 26 23:46:13 2023 |
Koji | Optics | General | OMC #1 input beam dump bonding | A beam dump was stacked on the base of
the previous beam dump. The angle was determined
so that the main transmission goes through |
|
|
476
|
Thu Jan 26 23:16:35 2023 |
Koji | Optics | Configuration | OMC #4: Top side bonding. | [Camille, Koji]
|
|
|
475
|
Thu Jan 26 23:07:14 2023 |
Koji | Optics | General | OMC #4: Input beam dump bonding | [Camille, Koji]
During the second UV epoxy session,
we did not bond the input beam dump. This |
|
|
474
|
Thu Jan 26 22:57:19 2023 |
Koji | Optics | General | OMC #4: One Invar block bonded with tilt | [Camille, Koji]
The bottom side template was separated
into two pieces and successfully removed |
|
|
473
|
Wed Jan 25 23:51:04 2023 |
Koji | General | General | The items packed for Downs | Qty1 1/2 mounts
Qty2 prism mounts
Qty6 gluing fixures |
|
|
472
|
Mon Jan 23 19:51:20 2023 |
Koji | Optics | General | OMC #4: cavity mirror bonding | [Camille, Koji]
We continued to bond two CM mirrors
and the other two steering mirrors for QPD2. |
|
|
471
|
Thu Jan 19 23:45:44 2023 |
Koji | Optics | General | OMC #4: cavity mirror bonding | [Koji, Camille]
We worked on the bonding of the
flat mirrors for the OMC cavity with UV epoxy. |
|
|
470
|
Mon Dec 19 18:51:50 2022 |
Koji | Optics | Characterization | TMS measurement with the PZT voltages altered | [Camille, Koji] Log of
the work on Dec 15, 2023
The vertical and horizontal |
|
|
469
|
Mon Dec 12 19:04:40 2022 |
Koji | Optics | Characterization | FSR/TMS/Spot Positions/Transmission 2nd trial | [Camille Koji]
We replaced CM2 with a PZT mirror
subassembly serialized by PZT "13" |
|
|
468
|
Fri Dec 9 13:13:13 2022 |
Koji | Optics | Characterization | FSR/TMS/Spot Positions/Transmission | [Camille Koji]
We quickly measured the basic parameters
of the OMC as is. |
|
|
467
|
Mon Dec 5 20:09:39 2022 |
Koji | Optics | General | (re)starting the OMC #4 build | [Camille Koji]
We started buikding the
OMC #4. |
|
|
466
|
Fri Dec 2 23:58:33 2022 |
Koji | Optics | Characterization | OMC #1 cleaning for water soluble contaminants | The second trial of the water scrub
A bright scatter is visible on
FM1, so I tried water scrub on FM1. This |
|
|
465
|
Fri Dec 2 12:38:15 2022 |
Koji | Optics | Characterization | OMC #1 cleaning for water soluble contaminants | Another set of FC cleaning was applied
to FM1/FM2/CM1/CM2 and SM2. Some FC strings
are visible on SM2. So I decided to clean |
|
|
464
|
Fri Dec 2 11:42:03 2022 |
Koji | Optics | Characterization | OMC #1 cleaning for water soluble contaminants | [Camille, Koji] Log of the work
on Nov 30, 2022
The
following is the notes from GariLynn
|
|
|
463
|
Tue Nov 29 15:54:47 2022 |
Koji | General | Configuration | Windows laptop for WincamD Beam'R2 recovery | Aaron took the set to Cryo lab
|
|
|
462
|
Mon Nov 21 19:13:35 2022 |
Koji | General | General | Transmission measurement (2nd deep cleaning of OMC #1) | OMC Transmission measurement after
the 2nd deep cleaning
The 2nd deep cleaning didn't |
|
|
461
|
Fri Nov 18 18:41:05 2022 |
Camille Makarem | General | General | 2nd deep cleaning of OMC #1 | The four cavity mirrors in OMC #1 were
each scrubbed using acetone and a cotton
swab. |
|
|
460
|
Thu Nov 17 19:50:00 2022 |
Koji | Optics | Characterization | Conclusion on the cleaning of OMC #001 | Conclusion on the cleaning of OMC
#001
- After a couple of first contact |
|
|
459
|
Thu Nov 17 18:56:22 2022 |
Koji | Optics | General | Transmission measurements of OMC #1 after deep cleaning | [Camille, Koji]
- Removed the first contact we
left on Monday. |
|
|
458
|
Tue Nov 15 11:12:24 2022 |
Koji | Optics | General | OMC #1 fogging on the AR side of BS1 cleaned | [Camille, Koji]
Photo of the BS1 AR cleaning process
Attachment 1: Before cleaning. |
|
|
457
|
Tue Nov 15 10:58:53 2022 |
Koji | Optics | General | OMC #1 damaged black glass removal | [Camille, Koji]
The damaged black glass was removed
from the OMC breadboard leaving the glass |
|
|
456
|
Tue Nov 15 07:46:58 2022 |
Camille Makarem | Optics | General | cleaning OMC #1 | Monday, November 14, 2022
Camille and Koji did a "deep
cleaning" of OMC#1: |
|
|
455
|
Mon Nov 14 09:27:13 2022 |
Koji | Optics | Characterization | transmission measurements through OMC #1 (before cleaning) | The measured total optical loss of the
OMC was
1st: 0.015 +/- 0.003 |
|
|
454
|
Mon Nov 14 08:34:45 2022 |
Camille | Optics | Characterization | transmission measurements through OMC #1 (before cleaning) | [Camille, Koji]
Friday, Nov 11th, 2022
Setting up OMC #1 for transmission |
|
|
453
|
Fri Nov 11 19:07:48 2022 |
Koji | Supply | General | Supply Order | Clean Supply Ordered
TexWipe TX8410 AlphaSat
Vectra Alpha 10 50 sheets x 12 pk (VWR |
|
|
452
|
Mon Nov 7 22:00:33 2022 |
Koji | Optics | Configuration | Setting up the fiber couplers | Fiber matching: 43.2/56.7 = 76%
S/P-pol ratio 0.7/43.2 = 1.6%
|
|
|
451
|
Mon Nov 7 21:16:16 2022 |
Camille | Optics | Configuration | Setting up the fiber couplers | [Camille, Koji]
Began setting up fiber assembly
for OMC testing: |
|
|
450
|
Mon Sep 26 14:27:49 2022 |
Koji | General | General | LLO OMC ICS work | OMC
#001
ICS Link: https://ics.ligo-la.caltech.edu/JIRA/browse/ASSY-D1201439-1
Already |
|
|
449
|
Tue Sep 20 08:54:33 2022 |
Koji | General | General | PD cage arrangement | Upon the LLO work, the current PD arrangement
in the cages are:
CAGE B |
|
|
448
|
Fri Aug 26 22:29:02 2022 |
Koji | General | General | Tool Shipping Prep | Shipping preparation for the LLO
trip
Started
July 15, 2022 and finished Aug 30. So it |
|
|
447
|
Thu Aug 25 20:05:00 2022 |
Koji | General | General | LLO OMC #001 Ballast Mass investigation | Here is the balance mass info for the LLO
OMC#001 analyzed from the photographs
Added masses are: 50+10g, |
|
|
446
|
Thu Aug 25 14:22:08 2022 |
Koji | General | General | LLO OMC #001 Ballast Mass investigation | Inspected the past LLO add-on mass configuration.
There are unknown masses at the
DCPD side. It looks like a small SS mass |
|
|
445
|
Wed Aug 24 11:29:47 2022 |
Koji | General | General | OMC #002 ready for shipment | [Stephen Koji]
The OMC #002 is ready for
shipment. |
|
|
444
|
Wed Aug 24 03:26:43 2022 |
Koji | General | General | OMC #002 Delamination repair Part2 (3) | Inspection
|
8x |
|
443
|
Wed Aug 24 03:20:59 2022 |
Koji | General | General | OMC #002 Delamination repair Part2 (2) | Bonding |
11x |
|
442
|
Wed Aug 24 02:57:43 2022 |
Koji | General | General | EP30-2 bonding setup | EP30-2 bonding setup |
|
|
441
|
Wed Aug 24 02:53:46 2022 |
Koji | General | General | OMC #002 Delamination repair Part2 (1) | Inspection of the delaminations in the
optics side |
|
|
440
|
Wed Aug 24 02:51:23 2022 |
Koji | General | General | OMC #002 Delamination repair Part1 (3) | Inspection of the bonding on the
suspension interface side. All look good. |
8x |
|
439
|
Mon Aug 15 22:49:03 2022 |
Koji | General | General | OMC #002 Delamination repair Part1 (2) | EP30-2
preparation
Two Al foil cups + A sheet |
7x |
|
438
|
Mon Aug 15 22:43:35 2022 |
Koji | General | General | OMC #002 Delamination repair Part1 (1) | [Stephen Koji]
Checked the delamination
status: |
|
|
437
|
Mon Aug 15 22:06:18 2022 |
Koji | General | General | OMC #002 new cable tie installed | [Stephen Koji]
New cable ties were installed on
the cable pegs attached to the long sides |
|
|
436
|
Mon Aug 15 21:31:56 2022 |
Koji | General | General | OMC #002 Cable bracket replacement (6) | The cable bracket was successfully
replaced.
Looking from the QPD side |
|
|
435
|
Thu Aug 11 15:24:57 2022 |
Koji | General | General | OMC #002 Cable bracket replacement (5) | - The hole size extension
is going forwared now. |
|
|
434
|
Wed Aug 10 18:42:27 2022 |
Koji | General | General | OMC #002 Cable bracket replacement (4) | [Stephen Koji]
Now we got the C&Bed parts
to continue to work on the cable bracket |
|
|
433
|
Thu Jul 28 00:46:47 2022 |
Koji | General | General | Subject: OMC #002 Cable bracket replacement (3) | Checking the spare parts
- Conclusion for OMC#2:
need PEEK cable |
|
|
432
|
Thu Jul 28 00:28:15 2022 |
Koji | General | General | OMC #002 Cable bracket replacement (2) | Connector
unmounting
- (Attachment 1) |
|
|
431
|
Wed Jul 27 23:52:18 2022 |
Koji | General | General | OMC #002 Cable bracket replacement (1) | Parts
check
- D1300052-V3 SN001 is going to |
|
|
430
|
Wed Jul 27 10:34:30 2022 |
Koji | General | General | OMC #002 Protective FirstContact Paint | The optical surfaces were coated with FirstContact
to keep them clean / somewhat protected during
the transportation. |
|