ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
252
|
Sun Mar 6 02:13:28 2016 |
Koji | Optics | Characterization | PD glass reflections | On friday, I removed a glass cover of a
G30655 with a PD can cutter.
When a beam shoots a Perkin Elmer/Excelitas |
|
|
253
|
Sun Mar 13 21:22:27 2016 |
Koji | Electronics | Characterization | Dark current measurement of the HQE PD and other PDs | Transfered for RGA scan
B4 (C1-05) -> F1
C1 (C1-07) -> F2 |
|
|
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 |
|
|
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 |
|
|
257
|
Sat Mar 26 18:22:24 2016 |
Koji | Electronics | Characterization | Baking / Contamination tests of the PDs | For the production of the aLIGO PDs, the
following transfer of the PDs were carried
out |
|
|
258
|
Tue Apr 5 18:14:55 2016 |
Koji | General | Loan / Lending | QPD Lending Crackle | Xiaoyue
QPD head
X-Z stage |
|
|
259
|
Tue Apr 5 18:22:40 2016 |
Koji | Electronics | Characterization | Baking / Contamination tests of the PDs | Possible
reduction of the QE was observed after air-bake
at 75degC. |
|
|
260
|
Tue Apr 5 21:20:15 2016 |
Koji | Electronics | Characterization | More dark noise measurement | All survived PDs have been measured. |
|
|
261
|
Fri Jun 10 17:12:57 2016 |
Koji | General | Configuration | L1 OMC DCPD replacement | New DCPD(T) = A1-23
DCPD(T) = DCPDB: extracted and accomodated
in CAGE-G SLOT1 |
|
|
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 |
|
|
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 |
|
|
264
|
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 |
|
|
265
|
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 |
|
|
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 |
|
|
268
|
Fri Sep 9 14:34:31 2016 |
Koji | General | General | Item lending | To 40m
First Contact Kit by Calum
Class A Kapton sheets |
|
|
269
|
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 |
|
|
270
|
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. |
|
|
271
|
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 |
|
|
272
|
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 |
|
|
273
|
Thu Dec 8 21:17:09 2016 |
Koji | General | General | OMC placed on the table / the beam roughly aligned | The OMC cavity was locked. The alignment
was precisely adjusted. The mode matching
was optimized by the lens positions. The |
|
|
274
|
Thu Jan 19 20:57:53 2017 |
Koji | Supply | General | Purchase | Ordered:
Office Depot
v AA battery Qty. 24 |
|
|
275
|
Thu Feb 16 17:23:12 2017 |
Koji | Supply | General | Purchase |
BNC Patch Panel
8x
Amphenol Connex 112443 / Isolated BNC FEMALE
TO FEMALE BULKHEAD ISOLATED ADAPTER - 50 |
|
|
276
|
Tue Mar 28 21:04:27 2017 |
Koji | Electronics | Characterization | PDH amp | Attachment 1: PDH amp
RF part (before the preamp was installed)
Attachment 2: |
6x |
|
277
|
Tue May 16 19:05:18 2017 |
Koji | Optics | Configuration | OMC SN002 fix - temporary optics | Working on the SN002 OMC fix. Checked the
inventory. I think I am using C8 mirror as
the new temporary CM1 and PZT24 as the new |
|
|
278
|
Fri May 26 21:53:20 2017 |
Koji | General | Configuration | Trans RF PD setup | Recent work
- DC output of the trans RF PD
was connected to the BNC patch panel. => |
|
|
279
|
Tue Jun 6 00:49:48 2017 |
Koji | General | Configuration | Trans RF PD setup | Last week, I further worked on the RF system
to install 20dB coupler on the agilent unit
and setup the R channel. This allowed me |
|
|
280
|
Tue Jun 6 22:00:36 2017 |
Koji | General | Configuration | Trans RF PD setup | - Replaced the PZT with the one used from
the beginning. This must be PZT #21. After
the replacement, the spot positions look |
|
|
281
|
Fri Jun 23 01:58:11 2017 |
Koji | Optics | General | OMC #002 Repair - CM1 gluing | [Alena, Koji]
Jun 21: Alena and Koji
worked on gluing of the CM1 mirror on the |
6x |
|
282
|
Fri Jun 23 10:55:07 2017 |
Koji | Optics | General | Dust layer on black glass beam dumps? | I wondered why the black glass beam dumps
looked not as shiny as before. It was in
fact a layer of dusts (or contaminants) accumulated |
|
|
283
|
Sat Jul 1 15:29:57 2017 |
Koji | Optics | General | Black glass cleaning / Final bonding for the emergency repair for OMC #002 | [Alena, Koji]
Report of the work on June
30. |
|
|
284
|
Sat Jul 1 21:33:18 2017 |
Koji | General | General | Some purchase notes | - Forgot to close the cylinder valve...
v HEPA prefilter (20"x20"x1"
MERV 7) |
|
|
285
|
Wed Jul 5 16:59:44 2017 |
Koji | General | General | The OMC #002 was packed | [Stephen Koji]
The OMC #002 was packed for the
transportation to Downs. |
|
|
286
|
Sat Jul 29 18:44:38 2017 |
rana | Electronics | Characterization | PDH amp | attachment 6: DCPD preamp looks like the
opamp is wired for positive feedback? |
|
|
287
|
Sat Jul 29 21:42:51 2017 |
Koji | Electronics | Characterization | PDH amp | The polarities indicated in the right circuits
were opposite, obviously. |
|
|
288
|
Fri Sep 8 15:14:05 2017 |
Koji | Facility | General | Preparation for the plumbing work | [Steve, Aaron, Koji]
We've finished the preparation
for the forthcoming plumbing work on (nominally) |
7x |
|
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 |
|
290
|
Thu Nov 30 12:18:41 2017 |
Stephen | General | General | Preparation for Modal Testing on 4 December | Norna Robertson, Stephen Appert ||
29 Nov 2017, 2 pm to 4 pm ||
227 Downs, CIT |
|
|
291
|
Thu Feb 22 20:21:02 2018 |
Koji | Optics | Characterization | aLIGO EOM test | POSTED
to 40m ELOG |
|
|
292
|
Mon Apr 2 17:27:04 2018 |
Koji | Optics | Characterization | aLIGO EOM test | 2nd optical test http://nodus.ligo.caltech.edu:8080/40m/13725 |
|
|
293
|
Thu May 3 21:45:58 2018 |
awade | General | Loan / Lending | Borrowed toaster oven | I’ve borrowed the black and decker
toaster oven to dry some sonicated parts.
It is temporarly located in the QIL lab. |
|
|
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 |
|
|
295
|
Tue May 15 19:53:45 2018 |
Koji | Optics | General | EOM Q comparison | Qs' were estimated with a lorentzian
function (eye fit)
|
|
|
296
|
Wed May 30 16:40:38 2018 |
Koji | Mechanics | Characterization | EOM mount stability test | https://awiki.ligo-wa.caltech.edu/wiki/EOM_Mount_Stability |
|
|
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 |
|
|
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 |
|
|
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) |
|
|
300
|
Mon Jul 2 15:27:31 2018 |
Rich Abbott | Electronics | General | Work on EOM (3rd IFO unit) | Koji, Rich
We took apart the unit removed
from the 3rd IFO (Unit serial number aLIGO |
|
|
301
|
Tue Jul 3 12:07:47 2018 |
Rich Abbott | Electronics | Characterization | Notes on 3rd IFO EOM | Attached please see my notes summarizing
the models for the electrodes and inductors
within the 3rd IFO EOM |
|