 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 morning.
- The thread holes for the cable pegs are 1/4-20 rather than 10-24. This requires re-machining of the cable pegs & the C&B.
- We are waiting for the fast shipment of the from LHO |
 Mon Jun 3 21:19:03 2013, Koji, General, General, Planning
|
Monday - Evening
(Koji)
[done] - DCPD alignment |
Wed Jun 5 01:06:35 2013, Zach, General, Characterization, L1 OMC as-built diagram 
|
D1300507
|
|
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
|
|
Wed Jun 5 18:51:31 2013, Koji, General, General, L1 OMC shipped out
|
[Koji, Jeff]
The L1 OMC finally sent out from Caltech!
|
|
Fri Jun 7 16:04:44 2013, Koji, General, General, [LLO] OMC arrived
|
[Koji Zach Suresh]
The OMC arrived at LLO without any destruction!
We found that one shock sensor on the box turned red, the other stayed white.
We brought the Perican case to the changing |
|
Mon Jun 10 10:04:37 2013, Koji, General, General, [LLO] OMC Test
|
[Koji Zach]
We worked on the OMC test over the weekend.
- At the beginning, the measured OMC transmission was ~85% even after subtracting the junk light and sidebands from the calculation. |
|
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 |
|
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
|
|
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 box: 250.8lb |
|
Tue Jun 18 15:45:38 2013, Koji, General, General, [LLO] OMC installation in HAM6
|
OMC installed in HAM6!
https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=7486
|
|
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) |
|
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 the components |
|
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 on Mon Aug 12th.
All of the four PZT assemblies were moved to the OMC lab. |
|
Fri Aug 16 17:21:38 2013, Koji, General, General, [OMC002] Build started
|
[Jeff Koji]
The breadboard (SN2) was loaded on the transportation fixture.
The laser side template was installed and the cavity mirrors were placed. |
|
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 -> I1 OMC cable side
Serial number #9/10/11/12 -> H1 OMC cavity side |
|
Tue Sep 3 17:03:25 2013, Koji, General, General, H1 OMC gluing completed
|
[Koji Jeff]
H1 OMC All Gluing completed
5 Glue H1 beam dumps (UV) |
|
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 (Oven F) and running without the actual OMC. |
|
Sat Sep 7 17:20:56 2013, Koji, General, General, OMC/PD lab optical table wrapping
|
[Koji Jeff]
In order to prepare for the splinkler installation on the HEPA enclosure, the table with the optics was wrapped with Ameristat sheets. |
|
Fri Sep 13 15:09:20 2013, Koji, General, General, Sprinkler installation: done
|
| A sprinkler head was installed on the HEPA enclosure. The head is covered with a plastic cap. |
|
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.
- The cables for the PZT was installed first. |
|
Wed Oct 23 02:45:07 2013, Koji, General, General, PD realignment
|
DCPD2 got misaligned during the cable installation. The PD alignment procedure have been gone through again.
Cavity locking
- Removed the FC layers for the cavity related mirrors. |
|
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.
Jeff and I packed the OMC and put it in the perikan case. It will be shipped tomorrow.
The other tools are also packed in the other box. Here is the list of the items |
|
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)
DCPD response:
Illuminate DCPD1 (T) -> DCPD B responded in MEDM |
|
Tue Dec 10 16:41:51 2013, Koji, General, General, To Buy
|
| Masks / Wipes => done |
|
Tue Feb 18 18:58:38 2014, Koji, General, General, LHO H1 OMC installation photos
|
LHO OMC installation photos
|
|
Fri Feb 28 19:50:11 2014, Koji, General, General, Misalignment ABCD matrix for the aLIGO OMC
|
Relationship between mirror misalignment and cavity mode shift was calculated.
The technique described in T0900647 by Sam Waldman was used.
The angles and displacement of the mirrors and beams are defined in the attached figure. |
|
Mon Mar 3 02:46:21 2014, Koji, General, Characterization, Spot positions scanned
|
Spot positions on CM1 and CM2 scanned according to the recipes provided by the previous entry.
The best result obtained was:
Transmission from FM2: 32.7mW |
|
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
Assembly Number D1201439 |
|
Fri Jun 27 12:29:50 2014, Koji, General, General, OMC baking
|
The OMC went into the oven at around 2PM on Thursday. It will be baked at 80degC for 48 hours.
The RGA result will be obtained on Monday.
Link to the ICS entry |
|
Fri Jun 27 18:51:33 2014, Koji, General, General, Supply
|
PTOUCH TAPE (12mm white) x 2
9V batteries |
|
Wed Jul 2 16:41:43 2014, Koji, General, General, OMC baking
|
OMC is back from the oven today.
To Do:
Optical tests |
|
Wed Jul 2 18:58:42 2014, Koji, General, General, Beam dump delamination
|
While the OMC breadboard was being inspected, it was found that two out of five black-glass beam dumps showed sign of delamination.
(attached photos).
The base of the each beam dump is a fused silica disk (25mm dia.). The black glass pieces are bonded to the disk. The bond is EP30-2 |
|
Thu Jul 3 17:45:18 2014, Koji, General, General, Beam dump delamination
|
Here is the resolution.
I'll apply fillets of EP30-2 along the edges of the black glass (See figure).
In order to allow the air escape from the gap, the inside of the V will not be painted. |
|
Mon Jul 7 01:36:03 2014, Koji, General, General, To Do
|
Optical tests
Cleaning
Power Budget
FSR measurement
TMS
measurement
TMS measurement (with DC voltage on PZTs)
PZT DC response
PZT AC response
|
|
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
|
|
Thu Jul 10 08:34:57 2014, Koji, General, General, To Do
|
Optical tests
Cleaning
Power Budget
FSR measurement
TMS
measurement
TMS measurement (with DC voltage on PZTs)
PZT DC response
|
|
Sun Jul 20 17:20:39 2014, Koji, General, General, The 3rd (LIO) OMC was shipped out to LHO
|
The 3rd (LIO) OMC was shipped out to LHO on Friday (Jul 18) Morning.
At LHO
- All of the on-breadboard cables should be attached and tied down. |
|
Thu Jul 31 15:07:53 2014, Koji, General, General, Item lending
|
Tara: Laser Safety goggle -> Returned
Evan:
HP signal generator (990MHz) (prev. setting 32.7MHz / +3dBm) |
|
Mon Aug 4 18:59:50 2014, Koji, General, General, A memorandom
|
On breadboarfd cabling for 3IFO OMC
D1300371 - S1301806
D1300372 - S1301808 |
|
Tue Aug 5 13:03:25 2014, Koji, General, General, Missing cable components
|
DCPD Connector Face: Qty2 https://dcc.ligo.org/LIGO-D1201276
QPD Connector Face: Qty2 https://dcc.ligo.org/LIGO-D1201282
PD faster: 92210A07 Qty 4: MCMASTER #2-56 x .25 FHCS |
|
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)
PD7&10 swapped with PD11(for DCPD T) and PD12(DCPD R). |
|
Fri Jan 30 19:31:08 2015, Koji, General, General, Item lending
|
Gabriele:
PZT HV Amp
Evan: |
|
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 fiber light guide / UV power meter / UV face shield (Qty 2) will be shipped to MIT.
They are CIT properties except for the illuminator. |
|
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)
2. UV Power meter (American Ultraviolet AIB1001) Caltech property C30140 |
|
Wed Feb 18 21:51:23 2015, Koji, General, General, Notes on OMC Transportation Fixtures & Pelican
|
LLO has one empty OMC transportation fixture.
LHO has one empty OMC transportation fixture.
LHO has one OMC transportation fixture with 3IFO OMC in it. |
|
Tue Jul 21 20:20:12 2015, Koji, General, General, Item lending
|
Kate (ATF)
- 4ch color oscilloscope (Tektronix)
- Chopper controller |
|
Fri Dec 18 15:33:24 2015, Koji, General, Loan / Lending, Loan from Rich
|
Loan Record: I borrowed a PD can opener from Rich => Antonio Returned Sep 9, 2016
Tungsten Carbide Engraver (permanently given to the OMC lab)
KEITHLEY SOURCE METER + Laptop |
|
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. |
|
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 |