| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
196
|
Sun Jul 6 02:45:56 2014 |
Koji | Optics | General | FSR Measurement | 3rd OMC FSR / Finesse measurement
RF AM was injected by detuning a
HWP. |
|
|
617
|
Thu Aug 24 12:30:58 2023 |
Camille Makarem, Thejas | Optics | Characterization | FSR and TMS analysis | Attached are the analysis results from
the measurements in 616.
FSR: 264.657354 +/- 0.003444 MHz |
|
|
616
|
Wed Aug 23 07:48:14 2023 |
Camille Makarem, Tejas | Optics | Characterization | FSR and TMS measuarement of A+ build | [Camille, Thejas]
22 August 2023
|
|
|
468
|
Fri Dec 9 13:13:13 2022 |
Koji | Optics | Characterization | FSR/TMS/Spot Positions/Transmission | [Camille Koji]
We quickly measured the basic parameters
of the OMC as is. |
|
|
469
|
Mon Dec 12 19:04:40 2022 |
Koji | Optics | Characterization | FSR/TMS/Spot Positions/Transmission 2nd trial | [Camille Koji]
We replaced CM2 with a PZT mirror
subassembly serialized by PZT "13" |
|
|
184
|
Wed May 14 02:15:15 2014 |
Koji | Optics | Characterization | FSR/TSM adjustment of the OMC cavity | 1. FSR was adjusted and measured with "the
golden arches" technique again.
FSR = 264.8412 MHz +/- 1400Hz => |
|
|
88
|
Mon Apr 1 03:13:41 2013 |
Koji | Optics | General | Failure of PZT-glass joints | [Koji, Jeff, Zach, Lisa]
We glued a test PZT-mirror assembly
last week in order to make sure the heat |
|
|
105
|
Mon Apr 8 23:42:33 2013 |
Koji | Optics | Configuration | Fake OMC roughly aligned | Mode matching:
|
|
|
372
|
Fri Aug 23 11:11:44 2019 |
shruti | Optics | Characterization | Finding the curvature bottom | I attempted to fit the data taken
by Koji of the beam spot precession at the
CCD in order to find the location of the |
|
|
45
|
Wed Dec 19 18:47:03 2012 |
Koji | Clean | General | First Contact Training with Margot | Steve and I visited Margot to have a training
session for application of First Contact
on optics. |
|
|
51
|
Wed Jan 2 07:45:39 2013 |
Koji | Optics | Characterization | First Contact test | Conclusion:
Good. First contact did not damage the coating
surface, and reduced the loss |
|
|
517
|
Mon Apr 3 11:06:47 2023 |
Thejas | Optics | Characterization | Flat mirror flatness | Data can be found in DCC document T2300050.
On Friday. Camille and I measured |
|
|
14
|
Wed Aug 1 19:35:00 2012 |
Koji | Facility | General | Floor cleaned / Workbench being built / Table top defect | -
The floor of the room was cleaned and waxed!
- |
|
|
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 |
|
|
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 |
|
|
49
|
Mon Dec 31 03:11:45 2012 |
Koji | Optics | Characterization | Further more RoC measurement | Total (excluding C2, C7, C8): 2.575 +/-
0.005 [m]
New results |
|
|
39
|
Fri Nov 9 00:43:32 2012 |
Koji | Optics | Characterization | Further more wedge measurement | Now it's enough for the first OMC (or even
second one too).
Today's measurements all distributed |
|
|
249
|
Tue Dec 29 12:15:46 2015 |
Koji | General | General | Glasgow polarizer passed to Kate | The Glasgow polarizer was passed to Kate
on Dec 17, 2015. |
|
|
391
|
Mon Aug 10 15:34:04 2020 |
Koji | Facility | Loan / Lending | Glue bake oven | Black and Decker Glue Baking Oven came
back to the OMC lab on Aug 10, 2020, Georgia
had lent the unit for the SAMS assembly/testing. |
|
|
161
|
Fri Aug 30 12:14:50 2013 |
Koji | Optics | General | H1 OMC Cavity length adjustment | Short
conclusion:
The roundtrip cavity length for |
|
|
162
|
Fri Aug 30 12:22:56 2013 |
Koji | Optics | General | H1 OMC Cavity side UV gluing | H1 OMC Cavity side optics was glued
on the breadboard
|
|
|
263
|
Fri Aug 12 14:58:17 2016 |
Koji | General | Configuration | H1 OMC DCPD replacement | Preparation of 3rd OMC for the
use in H1
New DCPD(T) = B1-01 |
|
|
164
|
Fri Aug 30 12:25:29 2013 |
Koji | General | General | H1 OMC Invar mount gluing | The Invar Mounting Blocks were glued on
the breadboard.
Serial number #1/2/5/6/7/8 -> |
|
|
169
|
Mon Oct 14 13:40:16 2013 |
Koji | Optics | Characterization | H1 OMC Optical testing | Since the middle of September, the optical
tests of H1 OMC were took place.
Here is summary of the progress. |
|
|
170
|
Mon Oct 14 15:50:55 2013 |
Koji | Optics | Characterization | H1 OMC Power budget | LHO OMC power budget
|
|
|
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 |
|
|
165
|
Tue Sep 3 17:03:25 2013 |
Koji | General | General | H1 OMC gluing completed | [Koji Jeff]
H1 OMC |
|
|
166
|
Wed Sep 4 22:22:54 2013 |
Koji | General | General | H1 OMC wrapped and moved to the bake lab. | [Koji, Jeff]
We moved the H1OMC to the bake lab.
Chub set up the vacuum bake oven |
|
|
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) |
|
|
175
|
Mon Nov 4 19:43:56 2013 |
Koji | General | General | H1OMC Packed | H1OMC PZT connector was replaced with the
correct one. This was the final step for
H1OMC. |
|
|
163
|
Fri Aug 30 12:24:28 2013 |
Koji | Optics | Characterization | H1OMC Spot positions | Beam heights on the diodes
DCPD1: 14.459mm -> With 1.5mm |
|
|
173
|
Tue Oct 22 17:17:59 2013 |
Koji | General | General | H1OMC cabling | [Chub, Jeff, Koji]
We worked on the wiring and routing
of the cables. |
|
|
176
|
Thu Nov 21 00:05:35 2013 |
Koji | General | General | H1OMC electronics arrangement | Checked the PZT arrangement: Mighty Mouse
Pin1&2 -> PZT2 (DCPD side), Mighty
Mouse Pin3&4 -> PZT1 (QPD side) |
|
|
368
|
Mon Jun 24 12:54:58 2019 |
Koji | Clean | General | HEPA BOOTH | https://www.airscience.com/purair-flow-laminar-flow-cabinets |
|
|
519
|
Wed Apr 5 22:09:30 2023 |
Koji | Facility | General | HEPA Enclosure extension | Chub finished the HEPA enclosure extension
project. |
|
|
500
|
Mon Mar 6 12:25:08 2023 |
Koji | Facility | General | HEPA Enclosure improvement | Chub, JC, and co worked on the HEPA enclosure
improvement. |
|
|
198
|
Sun Jul 6 03:56:40 2014 |
Koji | Optics | Characterization | HOM measurement with PZT vol swept | Cavity FSR/TMS measurement (2014/7/5) with
PZT voltages swept from 0V to 200V (50V step) |
|
|
199
|
Sun Jul 6 08:31:14 2014 |
Koji | Optics | Characterization | HOM measurement with PZT vol swept | 3rd OMC, HOM diagram at PZT1=0V and PZT2=50V.
First coincidence with the carrier
is the 32nd-order carrier mode. Very good. |
|
|
255
|
Sat Mar 26 01:49:48 2016 |
Koji | Optics | Characterization | HQEPD QE | Calibration
of the transimpedance
Use KEITHLEY 2450 as a calibrated |
|
|
254
|
Sun Mar 13 22:02:09 2016 |
Koji | Optics | Characterization | HQEPD QE measurement (direct comaprison) | Direct comparison of the PD responsibities
We
can expect 5% increase of the QE with the |
|
|
256
|
Sat Mar 26 17:39:50 2016 |
Koji | Electronics | Characterization | HQEPD dark noise | Dark noise measurement for 6 HQEPDs and
1 C30665. All of these showed sufficiently
low dark current noise levels compared with |
|
|
262
|
Fri Jul 22 22:24:05 2016 |
Koji | General | General | HQEPD inventory | As of Jul 22, 2016
As of Aug 11, 2016
As of Aug 16, 2016 |
|
|
427
|
Tue Jul 26 00:12:58 2022 |
Koji | General | General | High QE PD: QE measurements | - Installed the High QE PDs to OMC #002
B1-22@Cage B1 was
installed to the transmission DCPD
B1-23@Cage |
|
|
429
|
Wed Jul 27 10:34:09 2022 |
Koji | General | General | High QE PD: QE measurements 2 | - DLPCA-200 trans-impedance amplifier was
calibrated.
Keithley source meter 2450 |
|
|
3
|
Wed Jun 20 00:10:53 2012 |
Koji | Facility | General | Hole on the wall was patched | |
|
|
38
|
Thu Nov 8 20:12:10 2012 |
Koji | Optics | Configuration | How many glass components we need for a plate | Optical prisms 50pcs (A14+B12+C6+E18)
Curved Mirrors 25pcs (C13+D12)
|
|
|
37
|
Thu Nov 8 19:52:57 2012 |
Koji | Optics | General | How to apply UV epoxy | KA's question:
Do |
|
|
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 |
|
|
206
|
Fri Jul 11 00:06:33 2014 |
Koji | Optics | Characterization | I1OMC PD | DCPD#
DCPD1 DCPD2
Housing# |
|
|
205
|
Thu Jul 10 23:22:28 2014 |
Koji | Optics | Characterization | I1OMC QPD | QPD#
QPD1
QPD2 |
|