| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
220
|
Fri Jan 30 19:31:08 2015 |
Koji | General | General | Item lending | Gabriele:
PZT HV Amp
Evan: |
|
|
221
|
Tue Feb 3 18:23:49 2015 |
Koji | General | General | Item lending | - The laser was removed and shipped to
LHO today.
- UV illuminator / fused silica |
|
|
222
|
Wed Feb 4 20:07:24 2015 |
Koji | General | General | Item lending | Shipment to MIT (L. Barsotti, J. Miller)
1. UV Illuminator (LESCO Super
Spot MK III) |
|
|
226
|
Tue Jul 21 20:20:12 2015 |
Koji | General | General | Item lending | Kate (ATF)
- 4ch color oscilloscope (Tektronix)
- Chopper controller |
|
|
268
|
Fri Sep 9 14:34:31 2016 |
Koji | General | General | Item lending | To 40m
First Contact Kit by Calum
Class A Kapton sheets |
|
|
389
|
Thu Feb 27 14:31:13 2020 |
Koji | General | General | Item lending | Item lending as per Ian's request:
Particle Counter from OMC Lab to QIL
|
|
|
390
|
Mon Aug 10 15:29:54 2020 |
Koji | General | General | Item lending | The particle counter came back to the OMC
lab on Aug 10, 2020
|
|
|
615
|
Tue Aug 22 15:51:15 2023 |
Koji | General | General | Inventory: C30655 PDs | During the OMC(004) assembly, the stock
situation for Excelitas C30655 PDs was checked.
PD Cage H |
|
|
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.
|
|
|
401
|
Fri Nov 20 18:51:23 2020 |
Koji | General | General | Instrument loan | FEMTO DLPCA200 low noise preamp (brand
new)
Keithley Source Meter 2450 (brand |
|
|
266
|
Tue Aug 23 23:36:54 2016 |
Koji | Optics | Characterization | Inspection of the damaged CM1 (prev H1OMC) | 1. Calum and GariLynn checking the CM1
defect from the front side.
2. Same as above |
7x |
|
267
|
Thu Aug 25 02:17:09 2016 |
Koji | Optics | Characterization | Inspection of the damaged CM1 (prev H1OMC) | Initial inspection results by Calum, et
al.
https://dcc.ligo.org/LIGO-E1600268 |
|
|
358
|
Thu May 9 16:07:18 2019 |
Stephen | Mechanics | General | Improvements to OMC Bonding Fixture | [Stephen, Koji]
As mentioned in eLOG
331, either increased thermal cycling |
|
|
31
|
Thu Oct 18 20:23:33 2012 |
Koji | Optics | Characterization | Improved measurement | Significant
improvement has been achieved in the RoC |
|
|
299
|
Mon Jul 2 12:29:01 2018 |
Koji | Electronics | Characterization | Impedances of individual components (3IFO EOM) | [Rich Koji]
The impedances of the individual
components from the 3IFO EOM (before modification) |
|
|
403
|
Sun Nov 22 13:49:12 2020 |
Koji | Electronics | Characterization | Impedance Measurement for InGaAs QPDs | To know any anomaly to the junction
capacitance of the QPD segments, the RF impedances
were tested with a hand-made impedance measurement. |
|
|
366
|
Thu May 23 23:27:38 2019 |
Koji | Optics | Characterization | IGHQEX3000 high power test | LaserComponents IGHQEX3000 (Cage
B2: Serial# B1-23) was exposed to the beam
with the optical power from 1.6mW to 332mW. |
|
|
190
|
Tue Jun 24 18:43:15 2014 |
Koji | General | General | ICS entries for the OMC baking/assembly | For baking:
Assembly Name aLIGO Output
Mode Cleaner |
|
|
211
|
Sun Jul 20 17:19:50 2014 |
Koji | Mechanics | Characterization | I1OMC vibration test ~ 2nd round | Improved
vibration measurement of the OMC
Improvement |
9x |
|
210
|
Thu Jul 17 02:19:20 2014 |
Koji | Mechanics | Characterization | I1OMC vibration test | Summary
- The breadboard has a resonance
at 1.2kHz. The resonant freq may be chagned |
6x |
|
186
|
Sat May 17 07:40:14 2014 |
Koji | Optics | Characterization | I1OMC cavity mirrors glued | I1OMC cavity mirrors were glued.
FSR = 264.82MHz => Lcav = 1.132m
(nominal 1.132m) |
|
|
205
|
Thu Jul 10 23:22:28 2014 |
Koji | Optics | Characterization | I1OMC QPD | QPD#
QPD1
QPD2 |
|
|
206
|
Fri Jul 11 00:06:33 2014 |
Koji | Optics | Characterization | I1OMC PD | DCPD#
DCPD1 DCPD2
Housing# |
|
|
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 |
|
|
37
|
Thu Nov 8 19:52:57 2012 |
Koji | Optics | General | How to apply UV epoxy | KA's question:
Do |
|
|
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)
|
|
|
3
|
Wed Jun 20 00:10:53 2012 |
Koji | Facility | General | Hole on the wall was patched | |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
255
|
Sat Mar 26 01:49:48 2016 |
Koji | Optics | Characterization | HQEPD QE | Calibration
of the transimpedance
Use KEITHLEY 2450 as a calibrated |
|
|
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. |
|
|
500
|
Mon Mar 6 12:25:08 2023 |
Koji | Facility | General | HEPA Enclosure improvement | Chub, JC, and co worked on the HEPA enclosure
improvement. |
|
|
519
|
Wed Apr 5 22:09:30 2023 |
Koji | Facility | General | HEPA Enclosure extension | Chub finished the HEPA enclosure extension
project. |
|
|
368
|
Mon Jun 24 12:54:58 2019 |
Koji | Clean | General | HEPA BOOTH | https://www.airscience.com/purair-flow-laminar-flow-cabinets |
|
|
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) |
|
|
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. |
|
|
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 |
|
|
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. |
|
|
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) |
|
|
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 |
|
|
165
|
Tue Sep 3 17:03:25 2013 |
Koji | General | General | H1 OMC gluing completed | [Koji Jeff]
H1 OMC |
|
|
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 |
|
|
170
|
Mon Oct 14 15:50:55 2013 |
Koji | Optics | Characterization | H1 OMC Power budget | LHO OMC power budget
|
|
|
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. |
|
|
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 -> |
|
|
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 |
|