| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
67
|
Tue Mar 5 19:37:00 2013 |
Zach | Optics | Characterization | eLIGO OMC visibility vs. power measurement details | EDIT (ZK): Koji points out that (1 -
Ti) should really be the non-resonant reflectivity
of the aligned cavity, which is much closer |
|
|
68
|
Wed Mar 6 23:24:58 2013 |
Zach | Optics | Characterization | eLIGO OMC visibility vs. power measurement details | I found that, in fact, I had lowered
the modulation depth since when I measured
it to be 0.45 rads --> Psb = 0.1. |
|
|
107
|
Wed Apr 10 00:40:30 2013 |
Zach | Optics | Configuration | fauxMC locked | [Koji, Zach]
|
|
|
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 |
|
|
608
|
Thu Aug 17 07:57:12 2023 |
Camille Makarem | Optics | General | mode-matching in the cavity | [Camille, Thejas, Koji]
16 August 2023
|
|
|
606
|
Mon Aug 14 14:13:34 2023 |
Camille Makarem | Optics | General | mode-mismatch in the cavity | For Set 1 of the data in https://nodus.ligo.caltech.edu:8081/OMC_Lab/604,
VREFL(unlocked) = 3.226V
VREFL(locked) = 0.13V |
|
|
607
|
Tue Aug 15 16:15:13 2023 |
Camille Makarem | Optics | General | new power measurements (after cleaning) | [Camille, Thejas, Masayuki]
This afternoon we finished the realignment |
|
|
592
|
Mon Aug 7 07:40:33 2023 |
Camille Makarem | Optics | General | optimizing reflected signal | [Camille, Thejas] 4 August 2023
-REFL PD signal (unlocked): 3.5V |
|
|
593
|
Mon Aug 7 08:37:59 2023 |
Koji | Optics | General | optimizing reflected signal | With the current level of the mode
matching, the spot positions can be optimized.
I'd work on it first as the mirror RoC |
|
|
594
|
Mon Aug 7 08:51:56 2023 |
Camille Makarem | Optics | General | optimizing reflected signal | We will plan to look at the reflection
CCD image this afternoon.
|
|
|
603
|
Thu Aug 10 12:33:42 2023 |
Camille Makarem | Optics | General | optimizing the cavity post-cleaning | [Camille, Thejas]
This morning, we continued the efforts |
|
|
591
|
Mon Aug 7 07:36:09 2023 |
Camille Makarem | General | General | particle count | [Camille, Thejas]
We lowered the setting to MEDIUM on |
|
|
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. |
|
|
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. |
|
|
604
|
Fri Aug 11 10:42:05 2023 |
Camille Makarem | Optics | Characterization | power budget measurements | [Camille, Thejas]
10 August 2023
|
|
|
609
|
Thu Aug 17 09:06:51 2023 |
Camille Makarem | Optics | General | realignment of beam path through mode-matching lenses | [Camille, Thejas]
16 August 2023
|
|
|
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 |
|
|
598
|
Tue Aug 8 07:39:17 2023 |
Camille Makarem | Optics | General | steering the beam spot on the curved mirrors | [Camille, Thejas]
7 August 2023
|
|
|
600
|
Tue Aug 8 10:42:11 2023 |
Thejas | Optics | General | steering the beam spot on the curved mirrors | The spots look quite bright on the CMs,
we need to move the spots towards the center
of the mirorrs to avoid scatter points. |
|
|
601
|
Wed Aug 9 07:47:21 2023 |
Camille, Thejas | Optics | General | steering the beam spot on the curved mirrors | [Camille, Thejas, Masayuki]
8 August 2023
|
7x |
|
527
|
Mon Apr 24 15:29:48 2023 |
Camille Makarem | Optics | | summary of zygo setups | Summary of Zygo setups
Initial Zygo Setup:
Our initial Zygo setup consisted of |
6x |
|
454
|
Mon Nov 14 08:34:45 2022 |
Camille | Optics | Characterization | transmission measurements through OMC #1 (before cleaning) | [Camille, Koji]
Friday, Nov 11th, 2022
Setting up OMC #1 for transmission |
|
|
455
|
Mon Nov 14 09:27:13 2022 |
Koji | Optics | Characterization | transmission measurements through OMC #1 (before cleaning) | The measured total optical loss of the
OMC was
1st: 0.015 +/- 0.003 |
|