| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
518
|
Tue Apr 4 16:14:06 2023 |
Koji | Optics | Loan / Lending | C7 mirror to Downs | I handed Camille the C7 mirror for the
cross-calibration of the ROC characterization
techniques. |
|
|
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 |
|
123
|
Fri May 10 09:33:22 2013 |
Koji | Supply | General | COMSOL simulation on the glass bracket stress | |
|
|
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 |
|
|
98
|
Fri Apr 5 14:39:26 2013 |
Koji | Mechanics | Characterization | Calibration of the test PZTs after the heat cure | We attached fused silica windows on the
test PZTs. http://nodus.ligo.caltech.edu:8080/OMC_Lab/93
The glued assemblies were brought |
|
|
92
|
Wed Apr 3 17:39:38 2013 |
Koji | Mechanics | Characterization | Calibration of the test PZTs before the glue test | We want to make sure the responses of the
PZT actuator does not change after the EP30-2
gluing. |
|
|
364
|
Wed May 22 07:31:37 2019 |
Koji | Optics | Configuration | Camera test (DCPD high power test) | C30665 (3mm) camera test. The camera was
Canon PowerShot G7X MkII. Exposure 1/15s,
F 5.6, ISO 125, MF (~the closest), no zoom. |
|
|
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 |
|
|
185
|
Fri May 16 00:13:36 2014 |
Koji | Optics | Characterization | Cavity mirror gluing part 1 | BS1/FM1/FM2 for I1OMC were glued.
FM1 had to be intentionally rotated.
FM1 had to be intentionally shifted |
|
|
18
|
Tue Aug 14 03:29:06 2012 |
Koji | Supply | General | Clean supply rack | Clean supplies & some cleaning tools
are located at the right side of the entrance.
The file cabinet there was moved to |
|
|
347
|
Fri Apr 19 09:21:07 2019 |
Philip | Optics | | Cleaning of OMC optics | ach[Joe, Phillip, Koji,
Stephen]
Work from 17.04.2019 |
|
|
217
|
Wed Aug 27 23:13:13 2014 |
Koji | Optics | Characterization | Collection of the power budgetting info | L1
OMC Cavity power budget
H1 |
|
|
460
|
Thu Nov 17 19:50:00 2022 |
Koji | Optics | Characterization | Conclusion on the cleaning of OMC #001 | Conclusion on the cleaning of OMC
#001
- After a couple of first contact |
|
|
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
|
|
|
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 |
|
|
225
|
Sat Jul 18 11:37:21 2015 |
Koji | Electronics | AM Stabilized EOM Driver | D0900848 power board ~ oscillation issue solved | Power Supply Board D0900848 was
oscillating. Here is the procedure how the
issue was fixed. |
6x |
|
269
|
Fri Sep 9 19:43:32 2016 |
Koji | Optics | General | D1102211 OMC Diode Mount Glass Block went to Downs | D1102211 OMC Diode Mount Glass Block (11pcs)
have been given to Calum@Downs |
|
|
409
|
Sun May 30 15:17:16 2021 |
Koji | General | General | DCPD AF capacitance measirement | Attachment 1: System diagram.
The reverse bias voltage is controlled by
DS335. This can produce a voltage offset |
|
|
410
|
Sun May 30 15:32:56 2021 |
Koji | General | General | DCPD AF capacitance measirement | Measurement result:
The capacitance at no bias was
460~500pF. This goes down to below 300pF |
|
|
363
|
Mon May 20 19:53:17 2019 |
Koji | Optics | Configuration | DCPD high power test | We want to perform a damage test of OMC
DCPDs with high power beam. The OMC DCPD
is the 3mm InGaAs photodiodes with high quantum |
|
|
481
|
Wed Feb 1 01:39:41 2023 |
Koji | Mechanics | General | DCPD housing / QPD housing | Inserted 4-40 and 2-56 helicoils into the
DCPD/QPD housings for the 4th OMC. The retainer
caps were also fastened to the housings. |
|
|
118
|
Thu Apr 18 11:59:02 2013 |
Koji | General | General | DCPD path gluing | [Jeff, Koji]
DCPD path gluing |
|
|
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. |
|
|
402
|
Sat Nov 21 13:58:30 2020 |
Koji | Electronics | Characterization | Dark Current Measurement for InGaAs QPDs | Dark current measurement for InGaAs QPDs
(OSI FCI-InGaAs-Q3000) has been done using
Keithley 2450 and Frank's diode test |
|
|
251
|
Sat Feb 20 19:11:22 2016 |
Koji | Electronics | Characterization | Dark current measurement of the HQE PD and other PDs | Dark current of the HQE PD and
other PDs were measured.
- The HQE PDs were loaded on the |
|
|
253
|
Sun Mar 13 21:22:27 2016 |
Koji | Electronics | Characterization | Dark current measurement of the HQE PD and other PDs | Transfered for RGA scan
B4 (C1-05) -> F1
C1 (C1-07) -> F2 |
|
|
522
|
Fri Apr 14 15:52:53 2023 |
Camille Makarem | Optics | Characterization | Determining the curvature bottom of the curved mirrors | [Camille, Thejas]
We repeated Zygo measurements (using
the same setup and method as below) for curved |
|
|
523
|
Fri Apr 14 16:36:29 2023 |
Thejas | Optics | Characterization | Determining the curvature bottom of the curved mirrors | Attached here with are relevant plots.
|
21x |
|
247
|
Tue Dec 15 13:42:37 2015 |
Koji | Optics | Characterization | Dimensions / packaging of HQE PDs | The dimensions of a high QE PDs was measured
as well as the ones for C30665. (Attachment
4, Unit in mm) |
|
|
78
|
Sat Mar 23 16:36:15 2013 |
Koji | Electronics | Characterization | Diode QE measurement | Quantum efficiencies of the C30665GH
diodes were measured.
- The diode was biased by the FEMTO |
|
|
72
|
Fri Mar 15 02:15:45 2013 |
Koji | Electronics | Characterization | Diode testing | Diode testing
o Purpose of the measurement
- Test Si QPDs (C30845EH) for ISC |
|
|
73
|
Sun Mar 17 21:59:47 2013 |
Koji | Electronics | Characterization | Diode testing ~ DCPD | - For the dark noise measurement, the lid
of the die-cast case should also contact
to the box for better shielding. This made |
|
|
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, |
|
|
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 |
|
|
61
|
Thu Feb 7 21:35:46 2013 |
Koji | General | General | Dmass's loan of LB1005 / A2&C2 sent to Fullerton / First Contact @40m | Dmass
borrowed the LB1005 servo amp from the OMC
lab. |
|
|
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) |
|
|
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 |
|
|
224
|
Wed Jul 15 22:23:17 2015 |
Koji | Electronics | AM Stabilized EOM Driver | E1400445 first look | This is not an OMC related and even not
happening in the OMC lab (happening at the
40m), but I needed somewhere to elog... |
|
|
23
|
Mon Oct 8 11:30:47 2012 |
Koji | Optics | General | EG&G 2mm photodiode angle response | EGE&G 2mm photodiode angle response
measured by Sam T1100564-v1 |
|
|
245
|
Tue Dec 15 13:38:34 2015 |
Koji | Electronics | Characterization | EOM Driver linearity check | Linearity of the EOM driver was
tested. This test has been done on Nov 10,
2015. |
|
|
295
|
Tue May 15 19:53:45 2018 |
Koji | Optics | General | EOM Q comparison | Qs' were estimated with a lorentzian
function (eye fit)
|
|
|
302
|
Wed Jul 4 18:30:51 2018 |
Koji | Electronics | Characterization | EOM circuit models | The circuit models for the 3IFO EOM (before
mods) were made using LISO.
Then the modification plan was made |
|
|
296
|
Wed May 30 16:40:38 2018 |
Koji | Mechanics | Characterization | EOM mount stability test | https://awiki.ligo-wa.caltech.edu/wiki/EOM_Mount_Stability |
|
|
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 |
|
|
442
|
Wed Aug 24 02:57:43 2022 |
Koji | General | General | EP30-2 bonding setup | EP30-2 bonding setup |
|
|
93
|
Wed Apr 3 18:42:45 2013 |
Koji | Optics | General | EP30-2 gluing test | EP30-2 gluing test
|
|
|
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) |
|
|
201
|
Tue Jul 8 04:08:06 2014 |
Koji | General | General | Expoxy reapplication for beam dumps | Firstly, the excess epoxy was removed using
a cleaned razor balde
|
|
|
57
|
Tue Jan 22 11:10:25 2013 |
Koji | Facility | General | Eyeware storage and hooks for the face shields are installed | A carpenter has come to install the eyeware
storage and hooks for the face shields. |
|