ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
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%
|
|
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 |
|
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 |
 |
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 |
|
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: |
|
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 |
   |
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. |
   |
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. |
 |
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 |
|
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. |
|
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 |
 |
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
|
|
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
|
   |
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 |
 |
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 |
 |
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. |
|
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. |
  |
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" |
    |
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 |
    |
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. |
|
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. |
   |
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 |
|
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 |
 |
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 |
|
476
|
Thu Jan 26 23:16:35 2023 |
Koji | Optics | Configuration | OMC #4: Top side bonding. | [Camille, Koji]
|
    |
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 |
 |
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. |
    |
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. |
|
480
|
Wed Feb 1 01:33:03 2023 |
Koji | Mechanics | General | 5th OMC Transport Fixture | The transport fixture was brought to the
40m clean room to use as an assembly reference. |
|
481
|
Wed Feb 1 01:39:41 2023 |
Koji | Mechanics | General | DCPD housing / QPD housing | Inserted 4-40 and 2-56 helicoils into the
DCPD/QPD housings for the 4th OMC. The retainer
caps were also fastened to the housings. |
 |
482
|
Wed Feb 1 01:44:14 2023 |
Koji | General | General | OMC (004) plan | 2/1 2:30PM~ Bonding reinforcement (Last
EP30-2 gluing)
2/2 1:00PM~ Peripheral attachment |
|
483
|
Thu Feb 2 03:09:41 2023 |
Koji | Optics | General | OMC #4: One Invar block bonded with tilt | [Camille, Thejas, Koji]
We added a reinforcement bar at
the back of the invar block which had the |
 |
484
|
Sat Feb 4 03:16:10 2023 |
Koji | Optics | General | OMC #4: One Invar block bonded with tilt | The attached photo shows the resulting
bond spread.
|
|
485
|
Sat Feb 4 03:22:46 2023 |
Koji | Facility | General | Ready for the HEPA enclosure expansion | HEPA is quite low for a tall person and
also the curtain on the back of us is always
heavy. It's very tough for anyone to |
  |
486
|
Sat Feb 4 03:30:02 2023 |
Koji | Electronics | General | OMC cables #4 arrived | The OMC cables #4 arrived on Feb 3rd. (See
Attachment)
This shipment included two DCPD |
|
487
|
Sat Feb 4 03:33:22 2023 |
Koji | General | General | OMC Lab Inventory | Attachment 1: North Cabinet 2nd from the
left
Attachment 2: North Cabinet 3rd |
  |