| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
282
|
Fri Jun 23 10:55:07 2017 |
Koji | Optics | General | Dust layer on black glass beam dumps? | I wondered why the black glass beam dumps
looked not as shiny as before. It was in
fact a layer of dusts (or contaminants) accumulated |
|
|
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. |
|
|
284
|
Sat Jul 1 21:33:18 2017 |
Koji | General | General | Some purchase notes | - Forgot to close the cylinder valve...
v HEPA prefilter (20"x20"x1"
MERV 7) |
|
|
285
|
Wed Jul 5 16:59:44 2017 |
Koji | General | General | The OMC #002 was packed | [Stephen Koji]
The OMC #002 was packed for the
transportation to Downs. |
|
|
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 |
|
289
|
Mon Nov 27 20:24:24 2017 |
Koji | General | General | A former LHO PD (Trans) removed from the OMC #002 for the shipment to Stockholm | Attachment 1: The PD was
removed from the transmission side of the
OMC #002 (former LHO OMC - the one blasted |
6x |
|
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 |
|
|
294
|
Sat May 5 22:51:04 2018 |
Koji | Optics | General | 3IFO EOM Optical test | The 3IFO EOM test performed at
the 40m. Result: 40m
ELOG 13819 |
|
|
295
|
Tue May 15 19:53:45 2018 |
Koji | Optics | General | EOM Q comparison | Qs' were estimated with a lorentzian
function (eye fit)
|
|
|
300
|
Mon Jul 2 15:27:31 2018 |
Rich Abbott | Electronics | General | Work on EOM (3rd IFO unit) | Koji, Rich
We took apart the unit removed
from the 3rd IFO (Unit serial number aLIGO |
|
|
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. |
|
|
308
|
Sun Sep 23 19:42:21 2018 |
Koji | Optics | General | Montecarlo simulation of the phase difference between P and S pols for a modeled HR mirror | [Koji Gautam]
With Gautam's help,
I ran a coating design code for an HR mirror |
|
|
309
|
Thu Sep 27 20:19:15 2018 |
Aaron | Optics | General | Montecarlo simulation of the phase difference between P and S pols for a modeled HR mirror | I started some analytic calculations of
how OMC mirror motion would add to the noise
in the BHD. I want to make some prettier |
|
|
310
|
Thu Nov 1 19:57:32 2018 |
Aaron | Optics | General | Montecarlo simulation of the phase difference between P and S pols for a modeled HR mirror | I'm still not satisfied/done with the
solution to this, but this has gone too long
without an update and anyway probably someone |
|
|
314
|
Fri Feb 1 12:52:12 2019 |
Koji | Mechanics | General | PZT deformation simulation | A simple COMSOL simulation was run to see
how the PZT deforms as the voltage applied.
Use the geometry of the ring PZT |
|
|
321
|
Thu Apr 4 20:07:39 2019 |
Koji | Supply | General | Purchase | == Office Depot ==
Really
Useful Box 9L x 6 (delivered) |
|
|
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:
|
|
|
329
|
Thu Apr 11 21:22:26 2019 |
Koji | Mechanics | General | OMC(004): PZT sub-assembly gluing | [Koji Stephen]
The four PZT sub-assemblies were
glued in the gluing fixtures. There were |
|
|
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 |
|
|
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 |
|
|
345
|
Wed Apr 17 10:30:37 2019 |
Philip | Optics | General | OMC optical set-up day 1 | [Joe, Koji, Liyuan, Philip, Stephen]
Work done on 16.04.2019
|
|
|
358
|
Thu May 9 16:07:18 2019 |
Stephen | Mechanics | General | Improvements to OMC Bonding Fixture | [Stephen, Koji]
As mentioned in eLOG
331, either increased thermal cycling |
|
|
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 |
|
|
361
|
Wed May 15 19:07:53 2019 |
Koji | Clean | General | What is this??? | Suddenly something dirty emerged in the
lab. What is this? It looks like an insulation
foam or similar, but is quite degraded and |
|
|
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 |
|
|
367
|
Tue May 28 12:14:20 2019 |
Stephen | Optics | General | CM PZT Assembly Debonding of EP30-2 in Acetone | [LiyuanZ, StephenA]
Downs B119
Summary: |
8x |
|
368
|
Mon Jun 24 12:54:58 2019 |
Koji | Clean | General | HEPA BOOTH | https://www.airscience.com/purair-flow-laminar-flow-cabinets |
|
|
375
|
Wed Sep 18 22:30:11 2019 |
Stephen | Supply | General | EP30-2 Location and Status | Here is a summary of the events of the
last week, as they relate to EP30-2.
1) I lost the EP30-2 syringes that |
|
|
376
|
Wed Sep 18 23:16:06 2019 |
Stephen | Supply | General | Items staged at 40m Bake Lab for PZT Subassembly Bonding | The following items are presently staged
at the 40m Bake Lab (see photo indicating
current location) (noting items broght by |
|
|
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, |
|
|
378
|
Mon Sep 23 21:29:51 2019 |
Koji | Optics | General | OMC(004): PZT sub-assembly gluing (#9/#10) | [Stephen, Shruti, Koji]
We worked on the gluing of the
PZT sub-assy (#9 and #10) along with the |
|
|
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 |
|
|
381
|
Mon Sep 30 23:16:53 2019 |
Koji | Optics | General | OMC(004): PZT sub-assembly gluing (#9/#10) | Friday: [Stephen, Koji]
As the oven setting has qualified,
we brought the PZT assys in the air bake |
|
|
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 |
|
|
384
|
Tue Oct 22 11:56:09 2019 |
Stephen | Supply | General | Epoxy Status update as of 22 October 2019 | The following is the current status of
the epoxies used in assembly of the OMC (excerpt
from C1900052) |
|
|
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 |
|
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
|
|