| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
568
|
Thu Jul 20 14:14:49 2023 |
Thejas | Optics | General | A+ OMC bonding template alignment | We aligned the bonding template onto the
glass braedboard. This was done with the
help of a vernier caliper and adjusting teh |
|
|
587
|
Thu Aug 3 10:31:55 2023 |
Thejas | Optics | General | A+ OMC build: beam spot positions |
|
|
|
498
|
Mon Feb 27 17:40:27 2023 |
Thejas | Optics | Characterization | A+ OMC curved mirror characterization | [Camille, Stephen, Thejas]
Today, before the ZYGO lab was
cleaned and prepared for the cureved mirrors' |
|
|
499
|
Wed Mar 1 10:23:10 2023 |
Thejas | Optics | Characterization | A+ OMC curved mirror characterization | [Camille, Thejas, Stephen]
Yesterday, efforts were made to
measure ROC of curved mirrors (#6) in the |
|
|
507
|
Tue Mar 14 10:41:06 2023 |
Thejas | Optics | Characterization | A+ OMC curved mirror characterization | [Camille, GarriLynn, Stephen, Thejas]
Folllowing the replacement of the
spherical transmission / reference mirror |
|
|
508
|
Tue Mar 14 12:12:41 2023 |
Koji | Optics | Characterization | A+ OMC curved mirror characterization | RoC: 2.65m ! Interesting. I'll wait
for the follow-up analysis/measurements.
The RoC may be dependent on the area (diameter) |
|
|
505
|
Fri Mar 10 10:23:08 2023 |
Thejas | Optics | Characterization | A+ OMC curved mirror radius of curvature | OMC test set-up
Yesterday, laser beam output from
the fibre follwoing teh mode-matching lenses |
|
|
569
|
Thu Jul 20 14:28:53 2023 |
Thejas | Optics | General | A+ OMC optic bench beam layout | Beam profile of the input beam was measured
at it's beam waist, this is to ensure
the input beam waist matches the cavity |
|
|
572
|
Fri Jul 21 03:29:30 2023 |
Koji | Optics | General | A+ OMC optic bench beam layout | Nice measurement. This result suggests
that the fiber mode is supposed to be matched
to the OMC cavity by 99.8% at z0=0.358 m. |
|
|
494
|
Wed Feb 15 17:40:21 2023 |
Thejas | Optics | Characterization | A+ OMC perpendicularity of hole prisms | [Camille, Stephen, Thejas]
Contnuing the efforts to measure
and check perpendicularity: tombstone prisms |
20x |
|
581
|
Sat Jul 29 12:05:52 2023 |
Thejas | Optics | General | A+ OMC unit 1 build: Resonance achieved | [Camille, Thejas]
Steps followed to acheive this
resonance: |
|
|
578
|
Tue Jul 25 23:39:07 2023 |
Thejas | Optics | General | A+ OMC unit 1: CM positions swapped | With CM #30 at CM1 position and CM #14
at CM2 postion, when the beam spot on the
CM1 is a little lower than the central line |
|
|
561
|
Thu Jul 13 01:02:58 2023 |
Stephen | Optics | General | A+ OMC, Bonding of Curved Mirror Batch 1 | [2023.07.13 - Stephen, Camille, Thejas,
Maria]
We bonded Curved Mirror assemblies |
16x |
|
560
|
Thu Jul 13 00:38:47 2023 |
Stephen | Optics | Characterization | A+ OMC, PZT DC Response and Length to Angle before Curved Mirror Assy Batch 1 | [2023.07.13]
The attached table includes the
characterization values used to inform the |
|
|
489
|
Wed Feb 8 16:10:52 2023 |
Stephen | Optics | Characterization | A+ OMC, Parallelism of HR Prisms | [Camille, Thejas, Stephen]
We set up the white light autocollimator
in the Downs B119 cleanroom. (Nippon Kogaku, |
7x |
|
490
|
Thu Feb 9 15:54:41 2023 |
Thejas | Optics | Characterization | A+ OMC, Parallelism of HR Prisms | [Camille, Thejas, Stephen]
Continuing yesterday's efforts
to measure the wedge angle of the back surface |
19x |
|
563
|
Tue Jul 18 17:34:45 2023 |
Thejas | Optics | General | A+ PZT sub-assemblies | [Camille, Thejas]
Post sub-assembly bonding of CM
: Madeline will post a separate update on |
|
|
567
|
Wed Jul 19 14:26:17 2023 |
Koji | Optics | General | A+ PZT sub-assemblies | Pens like Sharpie are not recommended to
be used for CLASS B parts. |
|
|
571
|
Fri Jul 21 00:23:35 2023 |
Thejas | Optics | General | A+ PZT subassembly glue sheets | Below are the gluesheets for the first
four PZT subassembly bonding. |
|
|
589
|
Thu Aug 3 15:15:29 2023 |
Thejas | Optics | General | A+OMC mode-matching efficiency | The cavity falls out
of lock very often when subjected to slight
movements of objects on the optic table. |
|
|
590
|
Thu Aug 3 15:24:28 2023 |
Koji | Optics | General | A+OMC mode-matching efficiency | The amount of the reflected beam is a function
of the mode matching and the cavity loss.
|
|
|
425
|
Mon Jul 25 18:25:04 2022 |
Koji | General | General | A/C Filter was replaced |
New filter PN
Grainger
TK70457312T Mini-Pleat Air Filter, |
|
|
99
|
Fri Apr 5 18:18:36 2013 |
Zach | Optics | Configuration | AOM probably broken |
|
|
|
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 |
|
|
348
|
Fri Apr 19 09:35:28 2019 |
Joe | General | | Adjusting cavity axis, re-alignment of OMC and locking | [koji,philip,
joe, liyuan,
steven] |
|
|
625
|
Mon Nov 13 23:57:55 2023 |
Koji | Electronics | Loan / Lending | Agilent 4395A Network Analyzer -> WB251 | Aidan and Hanna wanted to use the Agilent
4395A Network Analyzer at the WB251.
All the connections were removed. |
|
|
109
|
Fri Apr 12 09:25:31 2013 |
Koji | Optics | Characterization | Alignment of the OMC (without glue) | [Zach Koji]
The first attempt not to touch the
curved mirrors did not work. (Not surprising) |
|
|
359
|
Thu May 9 17:35:07 2019 |
Koji | Optics | General | Alignment strategy | Notes
on the OMC cavity alignment strategy
- x3=1.17 γ + 1.40 δ, x4=1.40 |
|
|
189
|
Mon Jun 23 21:54:16 2014 |
Koji | Optics | General | All of the gluing completed | The bottom-side templates were removed.
The last beam dump was removed
TODO |
|
|
188
|
Fri Jun 20 18:59:12 2014 |
Koji | Optics | General | All of the invar blocks have been glued | All of the INVAR blocks have been glued.
I found thinner shims in the stock.
On Monday, the template will be removed. |
|
|
187
|
Thu Jun 19 23:16:50 2014 |
Koji | Optics | General | All of the prisms have been glued | - All of the PRISM mirrors have been glued
- 4 out of 5 beam dumps have been
glued |
|
|
55
|
Fri Jan 18 13:25:17 2013 |
Koji | Optics | Configuration | Autocollimator calibration | An autocollimator (AC) should show (0,0)
if a retroreflector is placed in front of
the AC. |
|
|
54
|
Wed Jan 16 14:10:50 2013 |
Koji | Optics | Characterization | Autocollimator tests of optics perpendicularity/parallelism | The
items:
- Autocollimator (AC) borrowed from |
|
|
257
|
Sat Mar 26 18:22:24 2016 |
Koji | Electronics | Characterization | Baking / Contamination tests of the PDs | For the production of the aLIGO PDs, the
following transfer of the PDs were carried
out |
|
|
259
|
Tue Apr 5 18:22:40 2016 |
Koji | Electronics | Characterization | Baking / Contamination tests of the PDs | Possible
reduction of the QE was observed after air-bake
at 75degC. |
|
|
194
|
Wed Jul 2 18:58:42 2014 |
Koji | General | General | Beam dump delamination | While the OMC breadboard was being inspected,
it was found that two out of five black-glass
beam dumps showed sign of delamination. |
|
|
195
|
Thu Jul 3 17:45:18 2014 |
Koji | General | General | Beam dump delamination | Here is the resolution.
I'll apply fillets of EP30-2 along
the edges of the black glass (See figure). |
|
|
87
|
Fri Mar 29 08:55:00 2013 |
Zach | Optics | Configuration | Beam launched into fiber |
|
|
|
97
|
Thu Apr 4 23:44:52 2013 |
Koji | Optics | Configuration | Beam launched into fiber | We had to move our flipper mirror to share
the beam between Peter's setup and ours as
our flipper is at the place where the ISS |
|
|
386
|
Fri Dec 6 00:55:25 2019 |
Koji | Optics | General | Beamdump gluing | [Stephen, Koji]
20 glass beamdumps were
bonded at the 40m cleanroom. |
6x |
|
76
|
Sat Mar 23 02:41:00 2013 |
Koji | Optics | General | Black glass beam dumps for the first OMC | Received black glass beam dumps from
MIT
- gluing by EP30-2 looks pretty fine. |
|
|
283
|
Sat Jul 1 15:29:57 2017 |
Koji | Optics | General | Black glass cleaning / Final bonding for the emergency repair for OMC #002 | [Alena, Koji]
Report of the work on June
30. |
|
|
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: |
|
|
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 |
|
|
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.
|
|
|
385
|
Tue Oct 22 15:54:59 2019 |
Koji | Electronics | Loan / Lending | Borrowed LB1005 from Cryo Cav | From Cryo Cav setup
Borrowed LB1005 Servo box ->
OMC |
|
|
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 |
|
|
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. |
|
|
424
|
Fri Jul 22 17:47:38 2022 |
Koji | General | General | C&B request for the reinforcement blocks | OMC Reinforcement blocks
1. P/N D1600316; Version v4; Type
01; Qty 30; Source Chemistry Machine Shop |
|
|
365
|
Thu May 23 01:42:46 2019 |
Koji | Optics | Characterization | C30665 high power test | An Excelitas C30665 PD with the
cap removed (SN07 in Case H slot #2) was
exposed to the beam with the optical power |
|