 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
Curved mirror gluing
- Applied the UV glues to CM1/CM2 prisms. |
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. |
|
Thu Apr 17 21:39:25 2014, Koji, Optics, General, More alignment
|
STORY:
- The cavity mirrors have scattering spots. The cavity alignment should have been scanned to find a cavity mode to have lowest loss possible.
BTW, We only have horizontal dof for the alignment scan. |
|
Thu Jun 19 23:16:50 2014, Koji, Optics, General, All of the prisms have been glued
|
- All of the PRISM mirrors have been glued
- 4 out of 5 beam dumps have been glued
TODO |
|
Fri Jun 20 18:59:12 2014, Koji, Optics, General, All of the invar blocks have been glued
|
All of the INVAR blocks have been glued.
I found thinner shims in the stock.
On Monday, the template will be removed. |
|
Mon Jun 23 21:54:16 2014, Koji, Optics, General, All of the gluing completed
|
The bottom-side templates were removed.
The last beam dump was removed
TODO |
|
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. |
|
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. |
|
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 01:39:38 2014, Koji, Electronics, General, PZT wire
|
Rich came to the OMC lab. Pins for the mighty mouse connector were crimped on the 4 PZT wires.
We found the male 4pin mighty mouse connector in the C&B area.
The cable inventory was checked with ICS/DCC combo. It turned out that most of the on-board cables |
|
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 |
|
Thu Aug 20 01:35:01 2015, Koji, Electronics, General, OMC DCPD in-vacuum electronics chain test
|
We wanted to know the transimpedance of the OMC DCPD at high frequency (1M~10M).
For this purpose, the OMC DCPD chain was built at the 40m. The measurement setup is shown in Attachment 1.
- As the preamp box has the differential output (pin1 and pin6 of the last DB9), pomona clips were used to measure the transfer functions |
|
Wed Aug 26 11:31:33 2015, Koji, Electronics, General, OMC DCPD in-vacuum electronics chain test
|
| The noise levels of the output pins (pin1/pin6) are measured. Note that the measurement is done with SE. i.e. There was no common mode noise rejection. |
|
Sun Sep 6 16:50:51 2015, Koji, Electronics, General, Unit test of the EOM/AOM Driver S1500118
|
TEST Result: S1500118
Additional notes
- Checked the power supply. All voltages look quiet and stationary. |
|
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. |
|
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 |
|
Mon Aug 15 10:09:10 2016, Koji, General, General, Prev H1 OMC shipped to CIT
|
Previous H1 OMC shipped from LHO to CIT
https://ics-redux.ligo-la.caltech.edu/JIRA/browse/Shipment-8196 |
|
Mon Aug 22 12:58:16 2016, Koji, General, General, UV bond samples -> Garilynn
|
- FS base + Mounting Prism
- FS or SF2 1/2" piece + FS or SF2 1/2" piece
- FS? plate + FS or SF2 1/2" piece + FS or SF2 1/2" piece + FS? plate |
|
Fri Sep 9 14:34:31 2016, Koji, General, General, Item lending
|
To 40m
First Contact Kit by Calum
Class A Kapton sheets |
|
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 |
|
Mon Nov 21 21:19:20 2016, Koji, Optics, General, LWE NPRO Laser / Input Optics / Fiber Coupling
|
- About 1.5 month ago, an 700mW LWE NPRO has been brought to OMC Lab.
- The SOP can be found here.
- The base was made for the beam elevation of 3" height. Four 1" pedestals were attached to rise the beam elevation to 4". |
|
Wed Dec 7 19:18:10 2016, Koji, Optics, General, LWE NPRO Laser / Input Optics / Fiber Coupling
|
FIber Input Mount 132deg
Fiber output mount 275deg
-> 525mW P: 517mW S: 8mW extinction ratio: 0.016 |
|
Wed Dec 7 21:18:35 2016, Koji, General, General, OMC placed on the table / the beam roughly aligned
|
The OMC mode matching sled was fixed on the nominal part of the table. Then the OMC was located at the nominal position marked by three poles.
The input periscope was adjusted to have the input beam roughtly centered on the OMC QPDs. This made the beam from FM2 aligned to the missing
CM1, and the beam just went through the hole of the mounting prism. Very promising! |