| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
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 |
|
336
|
Mon Apr 15 21:11:49 2019 |
Philip | Optics | Characterization | OMC(004): PZT testing for spare OMC | [Koji, Philip]
Today we tested the functionality
of the four remaining PZTs (11,12,13 and |
|
|
337
|
Tue Apr 16 11:36:36 2019 |
Koji | Optics | Characterization | OMC(004): PZT testing for spare OMC | Attachment 1: Shadow sensor
setup for the PZT displacement test
Attachment 2: |
9x |
|
342
|
Tue Apr 16 21:16:11 2019 |
Koji | Optics | Characterization | OMC(004): PZT testing for spare OMC | After having dug into the past email, it
turned out that these wires were the ones
already replaced from the original teflonwires. |
|
|
360
|
Thu May 9 18:10:24 2019 |
Koji | Optics | Characterization | OMC(004): Spot position scan / power budget | (Now the CCD image is captured as a movie
and the screen capture is easier!)
Various spot positions |
|
|
350
|
Sat Apr 20 00:50:12 2019 |
Koji | Optics | Characterization | OMC(004): Spot positions | Similarly to OMC
ELOG 349 the spot positions after the
replacement of CM2 were measured (Attachment |
|
|
356
|
Wed May 1 15:40:46 2019 |
Koji | Optics | Characterization | OMC(004): Spot positions and the scattering | Tried a few things.
1. Replaced CM1 (PZT ASSY
#10=M21+PZT#22+C12) with PZT ASSY #7 (=M1+PZT#13+C13) |
|
|
357
|
Fri May 3 11:06:28 2019 |
Koji | Optics | Characterization | OMC(004): Spot positions and the scattering | Experiment on 5/1
- CM1 right knob was moved 1div (10um)
backward such that the spots were better |
|
|
352
|
Mon Apr 22 19:54:28 2019 |
Koji | General | | OMC(004): Spot positions at the end of Apr 22nd | |
|
|
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 |
|
|
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:
|
|
|
167
|
Sat Sep 7 17:20:56 2013 |
Koji | General | General | OMC/PD lab optical table wrapping | [Koji Jeff]
In order to prepare for the splinkler
installation on the HEPA enclosure, the table |
|
|
152
|
Fri Aug 16 16:36:19 2013 |
Koji | Optics | General | Optics List | Link
to the "Mirror/PZT Characterization
links" |
|
|
241
|
Tue Sep 8 11:18:10 2015 |
Koji | Optics | Characterization | PBS Transmission measurement | Motivation: Characterize
the loss of the Calcite Brewster PBS.
Setup: (Attachment |
|
|
242
|
Wed Sep 9 01:58:34 2015 |
Koji | Optics | Characterization | PBS Transmission measurement | Calcite Brewster PBS Continued
The
transmission loss of the Calcite brewster |
|
|
172
|
Wed Oct 16 19:16:29 2013 |
Koji | Optics | Characterization | PD alignment |
shim 1.5mm 001/002 |
|
|
252
|
Sun Mar 6 02:13:28 2016 |
Koji | Optics | Characterization | PD glass reflections | On friday, I removed a glass cover of a
G30655 with a PD can cutter.
When a beam shoots a Perkin Elmer/Excelitas |
|
|
174
|
Wed Oct 23 02:45:07 2013 |
Koji | General | General | PD realignment | DCPD2 got misaligned during the cable installation.
The PD alignment procedure have been gone
through again. |
|
|
111
|
Tue Apr 16 00:40:45 2013 |
Koji | Optics | General | PD/QPD path gluing ~ preparation | [Jeff Koji]
- Placed the optics on the PD/QPD
path |
|
|
276
|
Tue Mar 28 21:04:27 2017 |
Koji | Electronics | Characterization | PDH amp | Attachment 1: PDH amp
RF part (before the preamp was installed)
Attachment 2: |
6x |
|
286
|
Sat Jul 29 18:44:38 2017 |
rana | Electronics | Characterization | PDH amp | attachment 6: DCPD preamp looks like the
opamp is wired for positive feedback? |
|
|
287
|
Sat Jul 29 21:42:51 2017 |
Koji | Electronics | Characterization | PDH amp | The polarities indicated in the right circuits
were opposite, obviously. |
|
|
313
|
Sat Jan 12 22:49:11 2019 |
Koji | Optics | Characterization | PM-SM patch cable mode cleaning effect | Mode
cleaning capability of an optical fiber was
measured. The conclusion |
|
|
103
|
Mon Apr 8 20:56:52 2013 |
Koji | Optics | Configuration | PZT & Curverd Mirror arrangement | Assembly #1:
Mounting Prism #16
PZT #26 |
|
|
149
|
Fri Aug 9 10:09:56 2013 |
Koji | General | General | PZT Assembly #3/#4 | Yesterday, Jeff and I bonded the PZT assemblies
(#3/#4).
The attached is the arrangement of |
|
|
150
|
Mon Aug 12 20:22:19 2013 |
Koji | General | General | PZT Assembly #5/#6 | PZT Assembly #5/#6 were glued on Fri Aug
9th
They are removed from the fixture |
|
|
148
|
Sat Jul 6 17:10:07 2013 |
Koji | Mechanics | Characterization | PZT Response analysis | Analysis of the PZT scan / TF data taken
on May 31st and Jun 1st.
[DC scan] |
|
|
374
|
Thu Sep 5 15:40:42 2019 |
shruti | Optics | Configuration | PZT Sub-Assembly | Aim: To find the combinations
of mounting prism+PZT+curved mirror to build
two PZT sub-assemblies that best minimises |
|
|
102
|
Mon Apr 8 11:49:18 2013 |
Koji | Mechanics | Characterization | PZT actuator tested at LLO | Test result of the PZTs by Valera and Ryan
PZT Length Angle
#
[nm/V] [urad/um]
11 14.5 17.6
|
|
|
104
|
Mon Apr 8 21:11:14 2013 |
Koji | Optics | General | PZT assembly gluing | [Jeff, Zach, Koji]
PZT assembly gluing
Glue gun -> to be returned to |
|
|
106
|
Tue Apr 9 13:56:09 2013 |
Koji | Optics | General | PZT assembly post gluing / pre baking pictures |
|
|
|
77
|
Sat Mar 23 13:34:14 2013 |
Koji | Optics | General | PZT assembly prototype glued |
Prototype
PZT assembly |
|
|
202
|
Tue Jul 8 18:54:54 2014 |
Koji | Mechanics | Characterization | PZT characterization | Each PZT was swept with 0-150V 11Hz triangular
wave.
Time series data for 0.2sec was recorded |
|
|
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 |
|
|
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 |
|
|
328
|
Thu Apr 11 12:15:31 2019 |
Koji | Mechanics | Configuration | PZT sub assy mirror orientations | |
|
|
312
|
Thu Jan 10 20:45:00 2019 |
Koji | Optics | Characterization | PZT test cable | As OMC SN002 already has the PZTs connected
to the Mighty-Mouse connector, a test cable
with a female mighty-mouse connector was |
|
|
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. |
|
|
5
|
Thu Jun 21 03:07:27 2012 |
Zach | Optics | Configuration | Parameter selection / mode definition | EDIT 2 (ZK): As with the |
|
|
17
|
Mon Aug 13 17:01:35 2012 |
Koji | Clean | General | Particle Counts | Aug 13, 2012 / 0.5um 1000~2000/(0.1 cu
ft) / 0.7um 400-600/(0.1 cu ft)
by ATF particle counter (MET ONE 227A) |
|
|
20
|
Tue Sep 25 14:18:14 2012 |
Koji | Clean | General | Particle Counts | Particle counts
Before the prefilter is installed:
0.5um 1191cnts, 0.7um 346cnts |
|
|
21
|
Mon Oct 1 16:06:55 2012 |
Koji | Clean | General | Particle Counts | 1. It turned out that the particle
counter MET ONE 227A at ATF shows
(particle count)/(0.1 ft^3) |
|
|
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 |
|
|
63
|
Thu Feb 21 18:44:18 2013 |
Koji | Optics | Configuration | Perpendicularity test | Perpendicularity test of the mounting
prisms:
The perpendicularity of the prism |
|
|
246
|
Tue Dec 15 13:39:13 2015 |
Koji | Electronics | Characterization | Phase noise measurement of aLIGO EOM drivers | This measurement has been done on Dec 1st,
2015.
The phase noise added by |
|