| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
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 |
|
|
3
|
Wed Jun 20 00:10:53 2012 |
Koji | Facility | General | Hole on the wall was patched | |
|
|
14
|
Wed Aug 1 19:35:00 2012 |
Koji | Facility | General | Floor cleaned / Workbench being built / Table top defect | -
The floor of the room was cleaned and waxed!
- |
|
|
15
|
Sat Aug 11 00:59:14 2012 |
Koji | Facility | General | Laser Safety Barrier | It seemed that a laser safety barrier was
installed today!?
|
|
|
19
|
Wed Aug 22 20:16:43 2012 |
Koji | Facility | General | Workbenches have been installed / Clean room stools | Last Friday, new workbenches were installed.
Vladimir got a new table and a cleanroom
stool. |
|
|
46
|
Wed Dec 26 14:33:33 2012 |
Koji | Facility | General | Lase Interlock wired | Two switches are connected in series. |
|
|
57
|
Tue Jan 22 11:10:25 2013 |
Koji | Facility | General | Eyeware storage and hooks for the face shields are installed | A carpenter has come to install the eyeware
storage and hooks for the face shields. |
|
|
75
|
Sat Mar 23 02:32:23 2013 |
Koji | Facility | General | N2 cylinder delivered | Preparation for ionized N2 blow
- 99.9998% N2 cylinder delivered
(ALPHAGAZ 2 grade by AIR LIQUIDE) ALPHAGAZ |
|
|
288
|
Fri Sep 8 15:14:05 2017 |
Koji | Facility | General | Preparation for the plumbing work | [Steve, Aaron, Koji]
We've finished the preparation
for the forthcoming plumbing work on (nominally) |
7x |
|
391
|
Mon Aug 10 15:34:04 2020 |
Koji | Facility | Loan / Lending | Glue bake oven | Black and Decker Glue Baking Oven came
back to the OMC lab on Aug 10, 2020, Georgia
had lent the unit for the SAMS assembly/testing. |
|
|
412
|
Thu Jun 23 21:03:33 2022 |
Koji | Facility | General | Moving 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 |
|
|
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 |
|
|
25
|
Tue Oct 9 05:03:15 2012 |
Koji | Electronics | General | OMC Test Electronics Setup | |
|
|
36
|
Thu Nov 8 19:47:55 2012 |
Koji | Electronics | Configuration | Solder for PZTs | Rich saids:
I |
|
|
72
|
Fri Mar 15 02:15:45 2013 |
Koji | Electronics | Characterization | Diode testing | Diode testing
o Purpose of the measurement
- Test Si QPDs (C30845EH) for ISC |
|
|
73
|
Sun Mar 17 21:59:47 2013 |
Koji | Electronics | Characterization | Diode testing ~ DCPD | - For the dark noise measurement, the lid
of the die-cast case should also contact
to the box for better shielding. This made |
|
|
78
|
Sat Mar 23 16:36:15 2013 |
Koji | Electronics | Characterization | Diode QE measurement | Quantum efficiencies of the C30665GH
diodes were measured.
- The diode was biased by the FEMTO |
|
|
131
|
Thu May 30 14:38:42 2013 |
Koji | Electronics | General | Cable fitting | Yesterday Jeff and Chub worked on the cabling
of the OMC. It turned out that the gender
of the cable connectors |
|
|
156
|
Thu Aug 22 15:40:15 2013 |
Koji | Electronics | Configuration | PZT endurance test | [Koji, Jeff]
Background
In response to the failure of one |
|
|
157
|
Fri Aug 23 19:24:32 2013 |
Koji | Electronics | Configuration | PZT endurance test (II) | The
PZT tests were finished with the conclusion
that the PZT won't be damaged with our expected |
|
|
203
|
Thu Jul 10 01:39:38 2014 |
Koji | Electronics | General | PZT wire | Rich came to the OMC lab. Pins for the
mighty mouse connector were crimped on the
4 PZT wires. |
|
|
224
|
Wed Jul 15 22:23:17 2015 |
Koji | Electronics | AM Stabilized EOM Driver | E1400445 first look | This is not an OMC related and even not
happening in the OMC lab (happening at the
40m), but I needed somewhere to elog... |
|
|
225
|
Sat Jul 18 11:37:21 2015 |
Koji | Electronics | AM Stabilized EOM Driver | D0900848 power board ~ oscillation issue solved | Power Supply Board D0900848 was
oscillating. Here is the procedure how the
issue was fixed. |
6x |
|
227
|
Wed Jul 22 09:43:01 2015 |
Koji | Electronics | AM Stabilized EOM Driver | Power supply test of the EOM/AOM Driver | Serial Number of the unit: S1500117
Tester: Koji Arai |
|
|
228
|
Wed Jul 22 10:15:14 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF test of the EOM/AOM Driver S1500117 | 7) Make sure the on/off RF button works,
=> OK
8) Make sure the power output doesn't |
|
|
229
|
Sat Jul 25 17:24:11 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF test of the EOM/AOM Driver S1500117 | (Calibration for Attachment 5 corrected
Aug 27, 2015)
Now the test procedure |
7x |
|
230
|
Tue Jul 28 18:36:50 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF test of the EOM/AOM Driver S1500117 | Final Test Result of S1500117:
https://dcc.ligo.org/LIGO-S1500117
After some staring the |
|
|
231
|
Mon Aug 10 02:11:47 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 | This is an entry for the work on Aug 3rd.
LIGO
DCC E1500151 |
|
|
232
|
Mon Aug 10 11:39:40 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 | Entry for Aug 6th, 2015
I faced with difficulties to operate
the RF AM detectors. |
|
|
233
|
Mon Aug 10 11:57:17 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 | Spending some days to figure out how to
program CPLD (Xilinx CoolRunner II XC2C384).
I learned that the JTAG cable which |
|
|
234
|
Mon Aug 10 12:09:49 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 | Still suffering from a power supply
issue!
I have been tracking the issues |
|
|
235
|
Thu Aug 20 01:35:01 2015 |
Koji | Electronics | General | OMC DCPD in-vacuum electronics chain test | We wanted to know the transimpedance
of the OMC DCPD at high frequency (1M~10M).
For this purpose, the OMC DCPD chain |
|
|
236
|
Wed Aug 26 11:31:33 2015 |
Koji | Electronics | General | OMC DCPD in-vacuum electronics chain test | The noise levels of the output pins (pin1/pin6)
are measured. Note that the measurement is
done with SE. i.e. There was no common mode |
|
|
237
|
Fri Aug 28 01:08:14 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 ~ Calibration | Worked on the calibration of the
RF AM Measurement Unit.
The calibration concept is as follows: |
|
|
238
|
Fri Aug 28 02:14:53 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 ~ 37MHz OCXO AM measurement | In order to check the noise level
of the RFAM detector, the power and cross
spectra for the same signal source |
|