| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
570
|
Fri Jul 21 00:07:03 2023 |
Thejas | Optics | General | | [Camille, Thejas, Stephen]
Effort was made to coarsely align
the laser beam into the caivty |
|
|
318
|
Sat Feb 2 20:35:02 2019 |
Koji | Optics | Characterization | Summary: OMC(002) HOM structure recalculation (after mirror replacement) | OMC (002) after repair
History:Mirror replacement
after the damage at H1. Measurement date |
|
|
379
|
Tue Sep 24 12:19:20 2019 |
Stephen | General | General | Dirty ABO test run prior to PZT Subassembly Bonding | The 40m Bake Lab's
Dirty ABO's OMEGA PID controller was
borrowed for another oven in the Bake Lab |
|
|
432
|
Thu Jul 28 00:28:15 2022 |
Koji | General | General | OMC #002 Cable bracket replacement (2) | Connector
unmounting
- (Attachment 1) |
|
|
433
|
Thu Jul 28 00:46:47 2022 |
Koji | General | General | Subject: OMC #002 Cable bracket replacement (3) | Checking the spare parts
- Conclusion for OMC#2:
need PEEK cable |
|
|
459
|
Thu Nov 17 18:56:22 2022 |
Koji | Optics | General | Transmission measurements of OMC #1 after deep cleaning | [Camille, Koji]
- Removed the first contact we
left on Monday. |
|
|
250
|
Thu Feb 18 21:08:32 2016 |
Koji | General | Loan / Lending | (all returned) Antonio loan | Antonio borrowed: Rich's PD cutter
(returned), Ohir power meter(returned),
Thorlabs power meter head, Chopper |
|
|
467
|
Mon Dec 5 20:09:39 2022 |
Koji | Optics | General | (re)starting the OMC #4 build | [Camille Koji]
We started buikding the
OMC #4. |
|
|
605
|
Mon Aug 14 07:52:11 2023 |
Camille Makarem | Optics | General | 2nd cleaning of the cavity optics | [Camille, Thejas]
11 August 2023
|
|
|
461
|
Fri Nov 18 18:41:05 2022 |
Camille Makarem | General | General | 2nd deep cleaning of OMC #1 | The four cavity mirrors in OMC #1 were
each scrubbed using acetone and a cotton
swab. |
|
|
294
|
Sat May 5 22:51:04 2018 |
Koji | Optics | General | 3IFO EOM Optical test | The 3IFO EOM test performed at
the 40m. Result: 40m
ELOG 13819 |
|
|
298
|
Mon Jul 2 11:30:22 2018 |
Koji | Electronics | Characterization | 3IFO EOM impedance measurement | [Rich Koji]
3IFO EOM (before any modification)
was tested to measure the impedance of each |
|
|
297
|
Wed May 30 17:44:23 2018 |
Koji | Optics | Characterization | 3IFO EOM surface check | 3IFO EOM dark microscope images courtesy
by GariLynn and Rich
Attachment1/2: Hole #1 |
|
|
219
|
Sat Jan 17 11:40:04 2015 |
Koji | General | General | 3rd OMC completed | Jan 15, 2015 3rd OMC completed
The face caps of the DCPD/QPD cables
were installed (Helicoils inserted) |
|
|
428
|
Wed Jul 27 10:09:51 2022 |
Koji | General | General | 4+4 wire clamp in hand | Regarding: D1200971
- 4 CLASS A wire clamp obtained |
|
|
400
|
Mon Nov 9 22:06:18 2020 |
Koji | Mechanics | General | 5th OMC Transport Fixture | I helped to complete the 5th OMC Transport
Fixture. It was built at the 40m clean room
and brought to the OMC lab. The fixture hardware |
|
|
480
|
Wed Feb 1 01:33:03 2023 |
Koji | Mechanics | General | 5th OMC Transport Fixture | The transport fixture was brought to the
40m clean room to use as an assembly reference. |
|
|
303
|
Thu Jul 26 20:57:07 2018 |
Koji | Electronics | Characterization | 9MHz port tuned impedance | [Rich Koji]
The 9MHz port was tuned and the
impedance was measured. |
|
|
369
|
Mon Jul 1 12:38:49 2019 |
Koji | Optics | Characterization | A and M prisms perpendicularity measurement | [Stephen, Koji]
The perpendicularity of
some of the A and M prisms were tested. |
6x |
|
289
|
Mon Nov 27 20:24:24 2017 |
Koji | General | General | A former LHO PD (Trans) removed from the OMC #002 for the shipment to Stockholm | Attachment 1: The PD was
removed from the transmission side of the
OMC #002 (former LHO OMC - the one blasted |
6x |
|
215
|
Mon Aug 4 18:59:50 2014 |
Koji | General | General | A memorandom | On breadboarfd cabling for 3IFO OMC
D1300371 - S1301806
D1300372 - S1301808 |
|
|
621
|
Wed Aug 30 12:38:52 2023 |
Thejas | Optics | General | A+ OMC #1: HOM spectrum | Examination into bonding template confimred
the limitation of space available to
change cavity length by at least 10 mm to |
|
|
566
|
Wed Jul 19 11:00:56 2023 |
Thejas | Optics | General | A+ OMC Bonding | [Camille, Thejas]
The A+ OMC transport fixture
and optic breadboard was transported to the |
|
|
496
|
Fri Feb 17 17:25:39 2023 |
Thejas | Optics | Characterization | A+ OMC Breadboard measuerements | Yesterday we also measured weight and dimensions
of breadboard. Error for the following measurements
is same as the least count of the instruments |
|
|
543
|
Fri May 19 16:09:31 2023 |
Stephen | General | General | A+ OMC Build Progress, Week of 2023.05.15 | A+ OMC Build efforts ongoing or completed
this week:
PZT lead onboard |
|
|
546
|
Fri Jun 2 17:15:44 2023 |
Stephen | General | General | A+ OMC Build Progress, Weeks of 2023.05.22 and 2023.05.29 | A+ OMC Build efforts ongoing or completed
in the last two weeks:
PZT lead onboard |
|
|
504
|
Wed Mar 8 17:27:51 2023 |
Thejas | Optics | Characterization | A+ OMC Curvature minimum of curved optics | [Stephen, Thejas]
Today, a more rigorous effort was
made to re-measure the position of the optics |
|
|
506
|
Fri Mar 10 11:12:57 2023 |
Thejas | Optics | Characterization | A+ OMC Curvature minimum of curved optics | [GariLynn, Stephen, Thejas]
Yesterday, we placed an iris (borrowed
from OMC Lab) infront of the spherical transmission |
|
|
502
|
Tue Mar 7 10:20:55 2023 |
Thejas | Optics | Characterization | A+ OMC Curved mirror radius of curvature | [Camille, Stephen, Thejas]
Stephen returned the curved mirror
#6 to Liyuan for point transmission measurement. |
|
|
509
|
Tue Mar 14 18:24:03 2023 |
Thejas | Optics | Characterization | A+ OMC Curved mirror radius of curvature | Today, I tried to measure the radius of
curvature of the curved mirror using the
input beam for the OMC test set-up. It was |
|
|
510
|
Tue Mar 14 20:06:03 2023 |
Koji | Optics | Characterization | A+ OMC Curved mirror radius of curvature | If the mirror has the RoC, it works as
a lens. And you should be able to see the
effect in the beam profile. |
|
|
511
|
Wed Mar 15 15:28:24 2023 |
Thejas | Optics | Characterization | A+ OMC Curved mirror radius of curvature | Thanks for teh comment Koji. Yes, I did
see this effect by comparing the beam sizes
with and without the curved mirror. But the |
|
|
512
|
Wed Mar 15 17:07:35 2023 |
Koji | Optics | Characterization | A+ OMC Curved mirror radius of curvature | I hope you can find useful lenses from
the lens kit in the cabinet. If you need
more lenses and mounts, talk to our students |
|
|
513
|
Fri Mar 17 15:01:21 2023 |
Koji | Optics | Characterization | A+ OMC Curved mirror radius of curvature | Thanks Koji, the lenses available in the
cabinet in the lab actually sufficed.
|
|
|
520
|
Tue Apr 11 16:18:25 2023 |
Thejas | Optics | Characterization | A+ OMC Curved mirror radius of curvature | Curved mirror radius of curvature raw data
can be found in the DCC document: T2300050
The input beam falling on the curved |
|
|
526
|
Wed Apr 19 14:28:08 2023 |
Thejas | Optics | Characterization | A+ OMC Curved mirror radius of curvature | Restimation of the parameters
Camille and I went back to the
lab to re-measure the beam profile follwoing |
|
|
531
|
Fri Apr 28 14:24:03 2023 |
Thejas | Optics | Characterization | A+ OMC Matching | [Thejas, Camille, Stephen]
Here are some notes on how
I plan to approach matching of |
|
|
544
|
Tue May 23 16:30:09 2023 |
Thejas | Electronics | Characterization | A+ OMC Piezos LA coupling | Oplev setup was built: arm length about
2 m
As the PZT 44 was actuated with |
|
|
497
|
Fri Feb 17 17:41:57 2023 |
Thejas | Electronics | Characterization | A+ OMC Piezos wedge angle | [Camille, Stephen, Thejas]
PZT model: Noliac 2124
Qty: 18 (Sr. No. 30 - 48) |
|
|
524
|
Mon Apr 17 17:56:25 2023 |
Thejas | Optics | Characterization | A+ OMC Piezos wedge angle | PZT dimension analyzed and characterized.
The blue dot in the images represents the
position of the cathode. The length of the |
19x |
|
491
|
Tue Feb 14 10:45:00 2023 |
Thejas | Optics | Characterization | A+ OMC Prism perpendicularity | [Camille, Stephen, Thejas]
Following the wedge angle measurements
of the prisms, perpendicularoty of their |
27x |
|
492
|
Tue Feb 14 22:52:35 2023 |
Thejas | Optics | Characterization | A+ OMC Prism perpendicularity of HR Prisms and BS | [Camille, Stephen, Thejas]
Continuing with the efforts to
measure the perpndicularity. |
18x |
|
539
|
Mon May 15 14:20:03 2023 |
Thejas | Optics | Characterization | A+ OMC ROC | Herewith attached are the results
of curved mirror radius of curvature characterization.
|
21x |
|
540
|
Mon May 15 14:24:41 2023 |
Thejas | Optics | Characterization | A+ OMC ROC | Koji's mirror measurement result attached
herewith for comparison.
|
|
|
573
|
Fri Jul 21 13:42:10 2023 |
Thejas | Optics | General | A+ OMC Unit 1 Cavity Build | 7/21/23
Fringes were observed at the optic-breadboard interface.
This was eliminated by cleaning the interface |
|
|
574
|
Mon Jul 24 16:12:14 2023 |
Koji | Optics | General | A+ OMC Unit 1 Cavity Build | It is ~1mm from the zero of the micrometer
readings. See attached photos from the 1st
OMC build. |
|
|
575
|
Mon Jul 24 17:39:06 2023 |
Thejas | Optics | General | A+ OMC Unit 1 Cavity Build | 7/24/23
The cavity input was re-adjusted
to make sure the beam was parallel to the |
|
|
576
|
Mon Jul 24 17:43:25 2023 |
Koji | Optics | General | A+ OMC Unit 1 Cavity Build | Thanks Koji
|
|
|
577
|
Tue Jul 25 11:03:13 2023 |
Thejas | Optics | General | A+ OMC Unit 1 Cavity Build | This readjustment to the input beam involved
adjusting the persicope mirorrs and sterring
mirror. We estimate that this will have changed |
|
|
495
|
Fri Feb 17 17:11:28 2023 |
Thejas | Optics | Characterization | A+ OMC beam-splitter prisms wedge angle measurement | [Camille, Stephen, Thejas]
Yesterday we measured wedge angle |
11x |