| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
290
|
Thu Nov 30 12:18:41 2017 |
Stephen | General | General | Preparation for Modal Testing on 4 December | Norna Robertson, Stephen Appert ||
29 Nov 2017, 2 pm to 4 pm ||
227 Downs, CIT |
|
|
293
|
Thu May 3 21:45:58 2018 |
awade | General | Loan / Lending | Borrowed toaster oven | I’ve borrowed the black and decker
toaster oven to dry some sonicated parts.
It is temporarly located in the QIL lab. |
|
|
305
|
Wed Aug 8 17:32:56 2018 |
Rich Abbott | General | Characterization | Modulation Index Test Setup at 40m Lab | Attached is a block diagram of the test
setup used in the 40m lab to measure the
modulation index of the IO modulator |
|
|
306
|
Thu Aug 9 11:24:29 2018 |
Koji | General | Characterization | Modulation Index Test Setup at 40m Lab | [Rich Koji]
The impedances of the new LLO EOM
were measured with the beat note setup at |
|
|
307
|
Wed Aug 29 11:06:30 2018 |
Koji | General | General | RF AM RIN and dBc conversion | 0. If you have an RF signal whose waveform
is , the amplitude is constant and 1. |
|
|
319
|
Tue Mar 19 17:30:25 2019 |
Koji | General | Characterization | OMC (002) Test items | OMC #002 Optical tests
FSR
measurement (done, 2019/1/8-9, 2019/4/1)
|
|
|
325
|
Fri Apr 5 23:30:20 2019 |
Koji | General | General | OMC (002) repair completed | OMC(002)
repair completed
When the cable harness of OMC(004) |
|
|
326
|
Wed Apr 10 19:22:24 2019 |
Koji | General | General | OMC(004): preparation for the PZT subassembly bonding | Preparation for the PZT subassembly
bonding (Section 6.2 and 7.3 of T1500060
(aLIGO OMC optical testing procedure) |
|
|
327
|
Thu Apr 11 10:54:38 2019 |
Stephen | General | General | OMC(004): preparation for the PZT subassembly bonding |
Quote:
|
|
|
330
|
Thu Apr 11 21:22:58 2019 |
Koji | General | General | OMC(004): PZT sub-assembly air baking | [Stephen Koji]
The baking of the PZT subassemblies
was more complicated than we initially thought. |
|
|
331
|
Sun Apr 14 23:58:49 2019 |
Koji | General | General | OMC(004): PZT sub-assembly post air-bake inspection | [Koji Stephen]
(Friday afternoon) We retrieved
the PZT sub-assemblies to the clean room. |
|
|
332
|
Mon Apr 15 00:08:32 2019 |
Koji | General | General | OMC(004): PZT sub-assembly post air-bake inspection (Sub-assy #7) | Sub-ASSY
#7
Probably the best glued unit among |
6x |
|
333
|
Mon Apr 15 00:39:04 2019 |
Koji | General | General | OMC(004): PZT sub-assembly post air-bake inspection (Sub-assy #8) | Sub-ASSY
#8
Probably the best glued unit among |
8x |
|
334
|
Mon Apr 15 01:07:30 2019 |
Koji | General | General | OMC(004): PZT sub-assembly post air-bake inspection (Sub-assy #9) | Sub-ASSY
#9
The most fractured unit among four. |
7x |
|
335
|
Mon Apr 15 01:23:45 2019 |
Koji | General | General | OMC(004): PZT sub-assembly post air-bake inspection (Sub-assy #10) | Sub-ASSY
#10
Attachment #1: Mounting |
|
|
339
|
Tue Apr 16 16:40:26 2019 |
Koji | General | Configuration | OMC(004): A Mirror selection | We are going to use A5 and A14
for FM1 and FM2. (The role of these
two can be swapped) |
|
|
343
|
Tue Apr 16 23:11:43 2019 |
Koji | General | General | Borrowed items from the other labs | Apr 16, 2019
Borrowed
two laser goggles from the 40m. (Returned |
|
|
344
|
Wed Apr 17 09:08:47 2019 |
Stephen | General | General | OMC(004): Unwrapping and preparing breadboard | [Stephen, Philip, Koji, Joe]
Breadboard D1200105 SN06 was selected
as described in eLOG |
|
|
348
|
Fri Apr 19 09:35:28 2019 |
Joe | General | | Adjusting cavity axis, re-alignment of OMC and locking | [koji,philip,
joe, liyuan,
steven] |
|
|
351
|
Mon Apr 22 09:54:21 2019 |
Joe | General | | 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 |
|
|
352
|
Mon Apr 22 19:54:28 2019 |
Koji | General | | OMC(004): Spot positions at the end of Apr 22nd | |
|
|
362
|
Thu May 16 12:41:28 2019 |
Chub | General | General | fire pillow found on optics table | That is an expanding fire pillow, also
known as firebrick. It is used to create
a fire block where holes in fire-rated walls |
|
|
377
|
Wed Sep 18 23:38:52 2019 |
Stephen | General | General | Dirty ABO ready for PZT Subassembly Bonding | The 40m Bake Lab's
Dirty ABO's OMEGA PID controller was
borrowed for another oven in the Bake Lab, |
|
|
379
|
Tue Sep 24 12:19:20 2019 |
Stephen | General | General | Dirty ABO test run prior to PZT Subassembly Bonding | The 40m Bake Lab's
Dirty ABO's OMEGA PID controller was
borrowed for another oven in the Bake Lab |
|
|
380
|
Thu Sep 26 17:33:52 2019 |
Stephen | General | General | Dirty ABO test run prior to PZT Subassembly Bonding - ABO is Ready! | Follow up on OMC
elog 379
I was able to obtain the following |
|
|
382
|
Tue Oct 22 10:25:01 2019 |
Stephen | General | General | OMC PZT Assy #9 and #10 Production Cure Bake | OMC PZT Assy Production Cure Bake (ref.
OMC
elog 381) for PZT Assy #9 and #10 started |
|
|
383
|
Tue Oct 22 11:52:53 2019 |
Stephen | General | General | Epoxy Curing Timeline of OMC PZT Assy #9 and #10 | This post captures the curing timeline
followed by OMC PZT Assys #9 and #10.
Source file posted in case any |
|
|
387
|
Fri Dec 13 14:59:18 2019 |
Stephen | General | General | OMC Beam Dump Production Cure Bake | [Koji, Jordan, Stephen]
The beam dumps, bonded on Fri 06
Dec 2019, were placed in the newly tuned |
|
|
388
|
Wed Dec 18 21:54:53 2019 |
Koji | General | General | OMC Beam Dump Production Cure Bake | The beamdumps were taken out from the oven
and packed in bags.
The bottom of the V are completely |
|
|
389
|
Thu Feb 27 14:31:13 2020 |
Koji | General | General | Item lending | Item lending as per Ian's request:
Particle Counter from OMC Lab to QIL
|
|
|
390
|
Mon Aug 10 15:29:54 2020 |
Koji | General | General | Item lending | The particle counter came back to the OMC
lab on Aug 10, 2020
|
|
|
392
|
Mon Aug 10 15:53:46 2020 |
Koji | General | General | Lab status check | Check-in to the OMC lab to see the status.
Nothing seemed changed. No bug. The HEPA
is running normal. The particle level was |
|
|
393
|
Mon Sep 28 16:03:13 2020 |
rana | General | General | OMC Beam Dump Production Cure Bake |
are there any measurements of the BRDF
of these things? I'm curious how much
light is backscattered into the incoming |
|
|
394
|
Mon Sep 28 16:13:08 2020 |
Koji | General | General | OMC Beam Dump Production Cure Bake | According to the past backscatter test
of the OMC (and the black glass beamdump:
not V type but triangular type on a hexagonal-mount), |
|
|
395
|
Thu Oct 8 19:55:22 2020 |
Koji | General | Characterization | Power Measurement of Mephisto 800NE 1166A | The output of Mephisto 800NE (former TNI
laser) was measured.
The output power was measured with |
|
|
396
|
Fri Oct 9 01:01:01 2020 |
Koji | General | General | TFT Monitor mounting | To spare some room on the optical table,
I wanted to mount the two TFT monitor units
on the HEPA enclosure frame. |
|
|
397
|
Fri Oct 16 00:53:29 2020 |
Koji | General | General | TFT Monitor mounting | The image flipping of the display unit
was fixed. The vendor told me how to fix
it. |
|
|
398
|
Fri Oct 23 19:09:54 2020 |
Koji | General | General | Particle counter transfered to Radhika | See this entry: https://nodus.ligo.caltech.edu:8081/40m/15642 |
|
|
399
|
Fri Nov 6 18:38:00 2020 |
Koji | General | General | Powermeter lent from OMC Lab to 2um ECDL | Thorlabs' powermeter controler +
S401C head was lent from OMC Lab. Returned
to OMC Jul 15, 2022 KA |
|
|
401
|
Fri Nov 20 18:51:23 2020 |
Koji | General | General | Instrument loan | FEMTO DLPCA200 low noise preamp (brand
new)
Keithley Source Meter 2450 (brand |
|
|
408
|
Thu May 20 17:03:50 2021 |
Koji | General | General | SRS LCR meter SRS720 borrowed from Downs | Item loan: SRS LCR meter SRS720 borrowed
from Downs. The unit is at the 40m right
now for testing with an excelitas PD. Once |
|
|
409
|
Sun May 30 15:17:16 2021 |
Koji | General | General | DCPD AF capacitance measirement | Attachment 1: System diagram.
The reverse bias voltage is controlled by
DS335. This can produce a voltage offset |
|
|
410
|
Sun May 30 15:32:56 2021 |
Koji | General | General | DCPD AF capacitance measirement | Measurement result:
The capacitance at no bias was
460~500pF. This goes down to below 300pF |
|
|
413
|
Tue Jun 28 16:13:34 2022 |
Koji | General | General | The small optical table not small enough to get out | The 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 |
|
|
414
|
Fri Jul 15 22:14:14 2022 |
Koji | General | General | OMC 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 |
|
|
415
|
Mon Jul 18 14:20:09 2022 |
Koji | General | General | OMC #002 Plan Portal | ==
Initial Preparation ==
[Done] OMC #002 |
|
|
416
|
Tue Jul 19 03:17:56 2022 |
Koji | General | General | OMC #002 Power Budget before mirror cleaning | o Power Budget (2022/07/18)
NPRO ADJ -50 (min)
Fiber incident 62.8mW |
|
|
417
|
Thu Jul 21 02:55:06 2022 |
Koji | General | General | OMC #002 Power Budget after mirror cleaning | o Power Budget after FirstContact
cleaning (2022/07/20)
NPRO ADJ -50 (min) |
|
|
418
|
Thu Jul 21 13:21:27 2022 |
Koji | General | Configuration | Windows laptop for WincamD Beam'R2 recovery | The Windows laptop for WincamD/Beam'R2
(DELL Vostro3300) was not functional.
- Windows 7 got stuck in the starting |
|
|
419
|
Thu Jul 21 14:35:35 2022 |
Koji | General | General | Bond reinforcement blocks for the invar brackets | Bond reinforcement blocks for the
invar brackets:
Attachment 1: |
|