| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
203
|
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. |
|
|
5
|
Thu Jun 21 03:07:27 2012 |
Zach | Optics | Configuration | Parameter selection / mode definition | EDIT 2 (ZK): As with the |
|
|
17
|
Mon Aug 13 17:01:35 2012 |
Koji | Clean | General | Particle Counts | Aug 13, 2012 / 0.5um 1000~2000/(0.1 cu
ft) / 0.7um 400-600/(0.1 cu ft)
by ATF particle counter (MET ONE 227A) |
|
|
20
|
Tue Sep 25 14:18:14 2012 |
Koji | Clean | General | Particle Counts | Particle counts
Before the prefilter is installed:
0.5um 1191cnts, 0.7um 346cnts |
|
|
21
|
Mon Oct 1 16:06:55 2012 |
Koji | Clean | General | Particle Counts | 1. It turned out that the particle
counter MET ONE 227A at ATF shows
(particle count)/(0.1 ft^3) |
|
|
398
|
Fri Oct 23 19:09:54 2020 |
Koji | General | General | Particle counter transfered to Radhika | See this entry: https://nodus.ligo.caltech.edu:8081/40m/15642 |
|
|
63
|
Thu Feb 21 18:44:18 2013 |
Koji | Optics | Configuration | Perpendicularity test | Perpendicularity test of the mounting
prisms:
The perpendicularity of the prism |
|
|
246
|
Tue Dec 15 13:39:13 2015 |
Koji | Electronics | Characterization | Phase noise measurement of aLIGO EOM drivers | This measurement has been done on Dec 1st,
2015.
The phase noise added by |
|
|
13
|
Tue Jul 31 21:33:17 2012 |
Koji | General | General | Plan Update: August [!] | Completed work of the previous months:
[Jul]
[Aug] [Sep] [Oct] [Nov] [Dec] |
|
|
7
|
Sat Jul 14 02:16:07 2012 |
Koji | General | General | Plan Update: July | Facility/Supplies
Work in progress |
|
|
34
|
Wed Nov 7 20:44:11 2012 |
Koji | General | General | Plan Update: November [!] | Completed work of the previous months:
[Jul]
[Aug] |
|
|
29
|
Tue Oct 16 15:51:01 2012 |
Koji | General | General | Plan Update: October [!] | Completed work of the previous months:
[Jul]
[Aug] |
|
|
136
|
Mon Jun 3 21:19:03 2013 |
Koji | General | General | Planning | Monday - Evening
(Koji)
[done] - DCPD alignment |
|
|
395
|
Thu Oct 8 19:55:22 2020 |
Koji | General | Characterization | Power Measurement of Mephisto 800NE 1166A | The output of Mephisto 800NE (former TNI
laser) was measured.
The output power was measured with |
|
|
227
|
Wed Jul 22 09:43:01 2015 |
Koji | Electronics | AM Stabilized EOM Driver | Power supply test of the EOM/AOM Driver | Serial Number of the unit: S1500117
Tester: Koji Arai |
|
|
399
|
Fri Nov 6 18:38:00 2020 |
Koji | General | General | Powermeter lent from OMC Lab to 2um ECDL | Thorlabs' powermeter controler +
S401C head was lent from OMC Lab. Returned
to OMC Jul 15, 2022 KA |
|
|
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 |
|
|
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 |
|
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 |
|
|
44
|
Tue Dec 18 20:04:40 2012 |
Koji | Optics | Characterization | Prism Thickness Measurement | The thicknesses of the prism mirrors (A1-A5)
were measured with micrometer thickness gauge.
Since the thickness of the thinner |
|
|
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 |
|
|
321
|
Thu Apr 4 20:07:39 2019 |
Koji | Supply | General | Purchase | == Office Depot ==
Really
Useful Box 9L x 6 (delivered) |
|
|
258
|
Tue Apr 5 18:14:55 2016 |
Koji | General | Loan / Lending | QPD Lending Crackle | Xiaoyue
QPD head
X-Z stage |
|
|
132
|
Thu May 30 15:00:28 2013 |
Koji | Optics | General | QPD alignment | The QPD alignment was adjusted using
the aligned beam to the cavity and the 4ch
transimpedance amplifier. |
|
|
133
|
Fri May 31 05:46:54 2013 |
Koji | Optics | General | QPD alignment | Peter F suggested to check the bottom surface
of the PD housings if there is any protrusion/interference/whatever.
And that was true! It was found that |
|
|
171
|
Tue Oct 15 18:50:08 2013 |
Koji | Optics | Characterization | QPD alignment | 1) Deburr the bottom surfaces of the QPD
housings
2) Aligned the QPDs |
|
|
115
|
Wed Apr 17 07:30:04 2013 |
Koji | Optics | General | QPD path glued | Yesterday,
all of the glass components for the QPD path
were glued. |
|
|
231
|
Mon Aug 10 02:11:47 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 | This is an entry for the work on Aug 3rd.
LIGO
DCC E1500151 |
|
|
232
|
Mon Aug 10 11:39:40 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 | Entry for Aug 6th, 2015
I faced with difficulties to operate
the RF AM detectors. |
|
|
233
|
Mon Aug 10 11:57:17 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 | Spending some days to figure out how to
program CPLD (Xilinx CoolRunner II XC2C384).
I learned that the JTAG cable which |
|
|
234
|
Mon Aug 10 12:09:49 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 | Still suffering from a power supply
issue!
I have been tracking the issues |
|
|
238
|
Fri Aug 28 02:14:53 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 ~ 37MHz OCXO AM measurement | In order to check the noise level
of the RFAM detector, the power and cross
spectra for the same signal source |
|
|
240
|
Tue Sep 8 10:55:31 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 ~ 37MHz OCXO AM measurement | Test sheet: https://dcc.ligo.org/LIGO-E1400445
Test Result (S1500114): https://dcc.ligo.org/S1500114 |
|
|
237
|
Fri Aug 28 01:08:14 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF AM Measurement Unit E1500151 ~ Calibration | Worked on the calibration of the
RF AM Measurement Unit.
The calibration concept is as follows: |
|
|
307
|
Wed Aug 29 11:06:30 2018 |
Koji | General | General | RF AM RIN and dBc conversion | 0. If you have an RF signal whose waveform
is , the amplitude is constant and 1. |
|
|
228
|
Wed Jul 22 10:15:14 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF test of the EOM/AOM Driver S1500117 | 7) Make sure the on/off RF button works,
=> OK
8) Make sure the power output doesn't |
|
|
229
|
Sat Jul 25 17:24:11 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF test of the EOM/AOM Driver S1500117 | (Calibration for Attachment 5 corrected
Aug 27, 2015)
Now the test procedure |
7x |
|
230
|
Tue Jul 28 18:36:50 2015 |
Koji | Electronics | AM Stabilized EOM Driver | RF test of the EOM/AOM Driver S1500117 | Final Test Result of S1500117:
https://dcc.ligo.org/LIGO-S1500117
After some staring the |
|
|
514
|
Fri Mar 24 07:38:54 2023 |
Camille Makarem | Optics | Characterization | ROC measurements of the curved mirrors | [Thejas, Camille]
21 March 2023
We made slight adjustments to the |
|
|
515
|
Fri Mar 24 07:47:37 2023 |
Camille Makarem | Optics | Characterization | ROC measurements of the curved mirrors | [Camille]
22 March 2023
Beam profile measurements were continued |
|
|
485
|
Sat Feb 4 03:22:46 2023 |
Koji | Facility | General | Ready for the HEPA enclosure expansion | HEPA is quite low for a tall person and
also the curtain on the back of us is always
heavy. It's very tough for anyone to |
|
|
41
|
Mon Nov 19 13:33:14 2012 |
Koji | Optics | Characterization | Resuming testing mirror RoCs | In order to resume testing the curvatures
of the mirrors, the same mirror as the previous
one was tested. |
|
|
22
|
Fri Oct 5 03:39:58 2012 |
Koji | Optics | General | RoC Test setup | Based on Zach's experiment design, I wrote
up a bit more detailed optical layout for
the mirror test. |
|
|
6
|
Fri Jun 29 11:26:04 2012 |
Zach | Optics | Characterization | RoC measurement setup | Here is the proposed RoC measurement
setup. Koji tells me that this is referred
to as "Anderson's method". |
|
|
9
|
Sun Jul 22 15:56:53 2012 |
Zach | Optics | Characterization | RoC measurement setup | Here is a more detailed version of
the setup, so that we can gather the parts
we will need. |
|
|
30
|
Wed Oct 17 20:36:04 2012 |
Koji | Optics | General | RoC test cavity locked | The RoC test setup has been built on
the optical table at ATF.
|
|
|
16
|
Mon Aug 13 16:59:11 2012 |
Koji | Clean | General | Room Cleaning Log | Floor wiped with a wet wiper (Aug 13, 2012)
Floor wiped with a wet wiper (Aug
15, 2012) |
|
|
58
|
Tue Jan 22 17:56:32 2013 |
Koji | Mechanics | General | Rotary stage selection | Newport UTR80
Sensitivity: 4 arcsec
|
|
|
408
|
Thu May 20 17:03:50 2021 |
Koji | General | General | SRS LCR meter SRS720 borrowed from Downs | Item loan: SRS LCR meter SRS720 borrowed
from Downs. The unit is at the 40m right
now for testing with an excelitas PD. Once |
|