| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
442
|
Wed Aug 24 02:57:43 2022 |
Koji | General | General | EP30-2 bonding setup | EP30-2 bonding setup |
|
|
443
|
Wed Aug 24 03:20:59 2022 |
Koji | General | General | OMC #002 Delamination repair Part2 (2) | Bonding |
11x |
|
444
|
Wed Aug 24 03:26:43 2022 |
Koji | General | General | OMC #002 Delamination repair Part2 (3) | Inspection
|
8x |
|
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. |
|
|
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 |
|
|
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, |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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
|
|
|
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 |
|
|
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 |
|
|
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 |
|
|
525
|
Tue Apr 18 07:59:46 2023 |
Madeline Lesovsky | General | General | Test Cure Bake - Curved Mirror Subassembly Bonding | This is a test bake conducted in Air Bake
Oven A (ABO-A) held in the 40m Clean and
Bake facility. The overall objective is to |
6x |
|
529
|
Wed Apr 26 14:43:44 2023 |
Stephen | General | Loan / Lending | Borrowed Items for PZT DC Response Shadow Sensor Setup | Borrowed for PZT DC Response Shadow Sensor
Setup (see Attachment 1):
Thorlabs PDA100A Photodiode |
|
|
535
|
Thu May 4 15:12:14 2023 |
Koji | General | Characterization | OMC (004): Final Testing |
FSR measurement (dip) -
done May 3, 2023
FSR
measurement (RFAM injection) - done |
|
|
537
|
Thu May 11 10:46:17 2023 |
Thejas | General | Characterization | aLIGO OMC | [Thejas, Camille, Koji]
We aligned the laser beam to the
cavity and drove the OMC cavity PZTs (0 to |
|
|
538
|
Fri May 12 10:00:06 2023 |
Camille Makarem | General | Loan / Lending | Borrowed Items for PZT DC Response Shadow Sensor Setup | The ThorLabs MDT694B piezo driver was returned
to the OMC lab.
|
|
|
541
|
Tue May 16 10:26:12 2023 |
Koji | General | Characterization | OMC (004): Final Testing |
FSR measurement (dip) -
done May 3, 2023
FSR
measurement (RFAM injection) - done |
|
|
543
|
Fri May 19 16:09:31 2023 |
Stephen | General | General | A+ OMC Build Progress, Week of 2023.05.15 | A+ OMC Build efforts ongoing or completed
this week:
PZT lead onboard |
|
|
546
|
Fri Jun 2 17:15:44 2023 |
Stephen | General | General | A+ OMC Build Progress, Weeks of 2023.05.22 and 2023.05.29 | A+ OMC Build efforts ongoing or completed
in the last two weeks:
PZT lead onboard |
|
|
549
|
Sun Jun 25 21:04:35 2023 |
Koji | General | Characterization | Optical assembly/testing of OMC (004) completed | Optical assembly/testing of OMC
(004) completed
- OMC (004) with the transport fixture |
|
|
550
|
Sun Jun 25 21:08:37 2023 |
Koji | General | Characterization | OMC (004) transported to Downs for cable furnishing | OMC (004) + the transport fixture was transported
to Downs 227 with the boxes for OMC cabling
hardware and DCPD/QPD connector parts. |
|
|
553
|
Thu Jul 6 10:19:23 2023 |
Thejas | General | Characterization | OMC Lab optic table | [Camille, Thejas]
The optics table in OMC lab was
cleaned up, cameras and photodiodes used |
|
|
557
|
Mon Jul 10 20:29:05 2023 |
Koji | General | Characterization | OMC(004) PZT characterization | Belated entry: OMC(004) PZT Slow
scan / freq response measurements (May 10/11/17,
2023) |
|
|
559
|
Wed Jul 12 17:27:44 2023 |
Koji | General | General | Mitsutoyo Digital Caliper (100mm) | We had missing digital caliper from the
clean room. As it is an essential component,
I have ordered a replacement. |
|
|
582
|
Mon Jul 31 13:19:14 2023 |
Camille Makarem | General | General | plans for this week 31 July 2023 | Plans for this week:
1) Verify electronics setup for cavity
locking. |
|
|
583
|
Tue Aug 1 11:04:13 2023 |
Camille Makarem | General | General | reoptimizing cavity alignment before locking | [Camille, Thejas]
We rechecked the alignment this morning
and re-optimized the resonance a bit. There |
|
|
585
|
Thu Aug 3 07:22:19 2023 |
Camille Makarem | General | General | particle count and cavity optimization/alignment | Yesterday, we measured the particle count
in the enclosure to ensure that the lower
setting on one of the HEPAs is still acceptable. |
|
|
588
|
Thu Aug 3 15:04:26 2023 |
Stephen | General | General | aLIGO Unit 4 Build, Cable Routing, Preparation | [Dean, Stephen]
Unit #4 aLIGO OMC unit
was transported to the 40m Bake Lab. |
|
|
591
|
Mon Aug 7 07:36:09 2023 |
Camille Makarem | General | General | particle count | [Camille, Thejas]
We lowered the setting to MEDIUM on |
|
|
595
|
Mon Aug 7 16:00:30 2023 |
Koji | General | General | OMC (004): Cable installation | The writing of this elog is still on going
[Dean, Stephen, Koji]
4th |
|
|
596
|
Mon Aug 7 16:01:05 2023 |
Koji | General | General | OMC (004): Production completed | OMC (004) Production completed. The OMC
together with the transport fixture is still
placed at the 40m clean room. |
|
|
615
|
Tue Aug 22 15:51:15 2023 |
Koji | General | General | Inventory: C30655 PDs | During the OMC(004) assembly, the stock
situation for Excelitas C30655 PDs was checked.
PD Cage H |
|
|
626
|
Mon Nov 27 21:05:51 2023 |
Koji | General | General | Inventory: C30655 PDs | The Cage H&I, as well as OMC DCPD bag,
were brought to the 40m for the 40m BHD.
|
|
|
52
|
Sun Jan 6 23:22:21 2013 |
Koji | Mechanics | General | SolidWorks model of the OMC suspension | |
|
|
58
|
Tue Jan 22 17:56:32 2013 |
Koji | Mechanics | General | Rotary stage selection | Newport UTR80
Sensitivity: 4 arcsec
|
|
|
69
|
Thu Mar 7 15:53:47 2013 |
Koji | Mechanics | General | OMC Transportation fixture, OMC PD/QPD mounts | |
|
|
70
|
Thu Mar 14 17:06:21 2013 |
Koji | Mechanics | General | OMC SUS work @LLO | EDIT (ZK): All photos on
Picasa. Also, I discovered that |
|
|
90
|
Mon Apr 1 10:28:03 2013 |
Koji | Mechanics | General | Additional UV blast for the top surface | [Koji, Lisa, Jeff, Zach]
Jeffs concern after talking with the |
|
|
92
|
Wed Apr 3 17:39:38 2013 |
Koji | Mechanics | Characterization | Calibration of the test PZTs before the glue test | We want to make sure the responses of the
PZT actuator does not change after the EP30-2
gluing. |
|
|
98
|
Fri Apr 5 14:39:26 2013 |
Koji | Mechanics | Characterization | Calibration of the test PZTs after the heat cure | We attached fused silica windows on the
test PZTs. http://nodus.ligo.caltech.edu:8080/OMC_Lab/93
The glued assemblies were brought |
|
|
102
|
Mon Apr 8 11:49:18 2013 |
Koji | Mechanics | Characterization | PZT actuator tested at LLO | Test result of the PZTs by Valera and Ryan
PZT Length Angle
#
[nm/V] [urad/um]
11 14.5 17.6
|
|
|
124
|
Mon May 13 14:49:35 2013 |
Koji | Mechanics | Characterization | Mounting Glass Bracket still broke with tightenin stress | [Koji / Jeff]
This is the elog about the work on
May 9th. |
|
|
125
|
Mon May 13 14:59:16 2013 |
Koji | Mechanics | General | Invar shim gluing | The invar reinforcement shims were glued
on the glass brackets on the breadboard.
|
|
|
130
|
Thu May 23 23:41:48 2013 |
Koji | Mechanics | General | DCPD/QPD Mount | DCPD mounts and QPD mounts were attached
on the breadboard. They are not aligned yet
and loosely fastened. |
|
|
148
|
Sat Jul 6 17:10:07 2013 |
Koji | Mechanics | Characterization | PZT Response analysis | Analysis of the PZT scan / TF data taken
on May 31st and Jun 1st.
[DC scan] |
|
|
158
|
Tue Aug 27 17:02:31 2013 |
Koji | Mechanics | Characterization | Spot position measurement on the diode mounts | After the PZT test, the curved mirrors
were aligned to the cavity again.
In order to check the height of the |
|