| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
161
|
Fri Aug 30 12:14:50 2013 |
Koji | Optics | General | H1 OMC Cavity length adjustment | Short
conclusion:
The roundtrip cavity length for |
|
|
160
|
Thu Aug 29 18:55:36 2013 |
Koji | Mechanics | General | I1 OMC top side gluing (UV) | The glass components for the I1 OMC top
side were glued by the UV glue.
Breadboard SN#4 |
|
|
159
|
Thu Aug 29 02:52:50 2013 |
Koji | Optics | Characterization | H1OMC Curved Mirror Alignment | Cavity
parameter was measured with 50V bias on PZT1
(CM1) |
|
|
158
|
Tue Aug 27 17:02:31 2013 |
Koji | Mechanics | Characterization | Spot position measurement on the diode mounts | After the PZT test, the curved mirrors
were aligned to the cavity again.
In order to check the height of the |
|
|
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 |
|
|
156
|
Thu Aug 22 15:40:15 2013 |
Koji | Electronics | Configuration | PZT endurance test | [Koji, Jeff]
Background
In response to the failure of one |
|
|
155
|
Thu Aug 22 15:34:03 2013 |
Koji | Optics | General | OMC Cavity side gluing | [Koji Jeff]
o BS1, FM1, FM2 prisms were glued
=> This fixed the unstability of |
|
|
154
|
Wed Aug 21 08:31:21 2013 |
Koji | Optics | Characterization | H1 OMC cavity alignment | Alignment of the H1 OMC cavity mirrors
- The cavity mirrors as well as the
first steering mirror were aligned on the |
|
|
153
|
Fri Aug 16 17:21:38 2013 |
Koji | General | General | [OMC002] Build started | [Jeff Koji]
The breadboard (SN2) was loaded
on the transportation fixture. |
|
|
152
|
Fri Aug 16 16:36:19 2013 |
Koji | Optics | General | Optics List | Link
to the "Mirror/PZT Characterization
links" |
|
|
151
|
Fri Aug 16 15:31:17 2013 |
Koji | Optics | Configuration | Mirror list for OMC(002) | OMC(002)
Cavity Mirrors
FM1 (input coupler): A9 |
|
|
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 |
|
|
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 |
|
|
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] |
|
|
147
|
Fri Jun 28 12:20:49 2013 |
Koji | General | General | Dmass's loan of Thorlabs HV amp | http://nodus.ligo.caltech.edu:8080/Cryo_Lab/799
(KA: Returned upon H1OMC building) |
|
|
146
|
Tue Jun 18 15:45:38 2013 |
Koji | General | General | [LLO] OMC installation in HAM6 | OMC installed
in HAM6! |
|
|
145
|
Tue Jun 18 10:01:11 2013 |
Koji | Optics | Characterization | Cavity Finesse analysis | This is the analysis of the cavity finesse
data taken on Apr/13/2013 (before baking),
May/30/2013 (after baking), and Jun/02/2013 |
|
|
144
|
Fri Jun 14 06:35:21 2013 |
Jeff | General | General | [LLO] L1 OMC status | https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=7410
Weights:
Suspension cage and transportation |
|
|
143
|
Thu Jun 13 12:12:20 2013 |
Zach | General | General | [LLO] OMC and OMCS in LVEA | https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=7395
|
|
|
142
|
Thu Jun 13 12:04:57 2013 |
Koji | General | General | [LLO] OMC Optical Test - completed | https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=7373 |
|
|
141
|
Mon Jun 10 10:04:37 2013 |
Koji | General | General | [LLO] OMC Test | [Koji Zach]
We worked on the OMC test over
the weekend. |
|
|
140
|
Fri Jun 7 16:04:44 2013 |
Koji | General | General | [LLO] OMC arrived | [Koji Zach Suresh]
The OMC arrived at LLO without any
destruction! |
|
|
139
|
Wed Jun 5 18:51:31 2013 |
Koji | General | General | L1 OMC shipped out | [Koji, Jeff]
The L1 OMC |
|
|
138
|
Wed Jun 5 18:19:51 2013 |
Koji | General | General | Some recent photos from the OMC final test at CIT | Applying First Contact for the optics cleaning
|
|
|
137
|
Wed Jun 5 01:06:35 2013 |
Zach | General | Characterization | L1 OMC as-built diagram | D1300507
|
|
|
136
|
Mon Jun 3 21:19:03 2013 |
Koji | General | General | Planning | Monday - Evening
(Koji)
[done] - DCPD alignment |
|
|
135
|
Mon Jun 3 18:58:08 2013 |
Koji | Optics | Configuration | OMC final tests | - QPD mount aligned, QPD output checked
The spots are with 100um from
the center of the diodes. [ELOG |
|
|
134
|
Fri May 31 14:07:54 2013 |
Koji | Optics | Characterization | Transverse Mode Spacing measurement afte the baking | Measurement for pitch
Free Spectral Range
(FSR): 264.9703 +/− 0.0007 MHz |
|
|
133
|
Fri May 31 05:46:54 2013 |
Koji | Optics | General | QPD alignment | Peter F suggested to check the bottom surface
of the PD housings if there is any protrusion/interference/whatever.
And that was true! It was found that |
|
|
132
|
Thu May 30 15:00:28 2013 |
Koji | Optics | General | QPD alignment | The QPD alignment was adjusted using
the aligned beam to the cavity and the 4ch
transimpedance amplifier. |
|
|
131
|
Thu May 30 14:38:42 2013 |
Koji | Electronics | General | Cable fitting | Yesterday Jeff and Chub worked on the cabling
of the OMC. It turned out that the gender
of the cable connectors |
|
|
130
|
Thu May 23 23:41:48 2013 |
Koji | Mechanics | General | DCPD/QPD Mount | DCPD mounts and QPD mounts were attached
on the breadboard. They are not aligned yet
and loosely fastened. |
|
|
129
|
Tue May 21 18:28:08 2013 |
Koji | General | General | Current most reliable OMC schedule | - The wrong Mighty Mouse connectors for
the PZT wires were prepared. The correct
ones are in the vacuum oven till Tuesday |
|
|
128
|
Mon May 20 14:59:21 2013 |
Koji | General | General | OMC is out from the oven | The OMC came back to the table again.
No obvious change is visible: no
crack, no delamination |
|
|
127
|
Tue May 14 19:06:00 2013 |
Koji | Clean | General | OMC Baking | The OMC is in the air bake oven now.
|
|
|
126
|
Mon May 13 15:00:23 2013 |
Koji | General | General | Current most reliable OMC schedule | May
Tue 14th The OMC
given to Bob (Air bake & Vac bake)
Mon
20th The OMC received from Bob
|
|
|
125
|
Mon May 13 14:59:16 2013 |
Koji | Mechanics | General | Invar shim gluing | The invar reinforcement shims were glued
on the glass brackets on the breadboard.
|
|
|
124
|
Mon May 13 14:49:35 2013 |
Koji | Mechanics | Characterization | Mounting Glass Bracket still broke with tightenin stress | [Koji / Jeff]
This is the elog about the work on
May 9th. |
|
|
123
|
Fri May 10 09:33:22 2013 |
Koji | Supply | General | COMSOL simulation on the glass bracket stress | |
|
|
122
|
Wed May 8 15:36:50 2013 |
Koji | General | General | Latest OMC schedule |
May
(done) Mon 6th:
Invar plate arrival / Spot position measurement
(done)
Tue 7th: Invar plate cleaning / Spot position |
|
|
121
|
Wed May 8 15:08:57 2013 |
Koji | Optics | Characterization | Spot position measurement on the diode mounts | Remeasured the spot positions:
DCPD1: 1.50mm+0.085mm => Beam
0.084mm too high |
|
|
120
|
Mon May 6 19:31:51 2013 |
Koji | Optics | Characterization | Spot position measurement on the diode mounts | Measurement Order: DCPD2->DCPD1->QPD1->QPD2
DCPD1: 1.50mm+0.085mm => Beam
0.027mm too low |
|
|
119
|
Fri May 3 21:09:08 2013 |
Koji | General | General | OMC is back | L1 OMC is back on the table for the action
next week. |
|
|
118
|
Thu Apr 18 11:59:02 2013 |
Koji | General | General | DCPD path gluing | [Jeff, Koji]
DCPD path gluing |
|
|
116
|
Thu Apr 18 11:43:59 2013 |
Koji | General | General | Mounting Glass Bracket Failure | [Jeff, Koji]
- While we were working on the optics
alignment, one of the mounting brackets made |
|
|
115
|
Wed Apr 17 07:30:04 2013 |
Koji | Optics | General | QPD path glued | Yesterday,
all of the glass components for the QPD path
were glued. |
|
|
114
|
Tue Apr 16 23:26:51 2013 |
Koji | Optics | Characterization | Further More Mirror T measurement | Since the previous measurement showed too
high loss, the optical setup was checked.
It seemed that a PBS right before |
|
|
113
|
Tue Apr 16 09:43:58 2013 |
Koji | Optics | Configuration | Mirror list for L1OMC | L1 OMC
Cavity Mirrors
FM1 (input coupler): A8 |
|
|
112
|
Tue Apr 16 08:12:14 2013 |
Koji | Optics | Characterization | Further More Mirror T measurement | T&Rs of the B mirrors and some of the
E mirrors are measured.
I found that |
|
|
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 |
|