| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6788
|
Thu Jun 7 18:46:13 2012 |
yuta | Update | SUS | PRM oplev centered | PRM oplev beam was not hitting on the QPD
since Jun 1, so I centered it. I reverted
the oplev servo gains and now oplev servo |
|
|
6789
|
Fri Jun 8 15:08:27 2012 |
yuta | Update | Green Locking | aligned/mode-matched Y green beat setup | Laser temperature settings for Y arm green
work today are;
|
|
|
6794
|
Mon Jun 11 21:50:08 2012 |
yuta | Update | Green Locking | beatbox looks OK | Summary:
We need I-Q frequency deiscriminator
to control the arm length fine and continuously. |
|
|
6798
|
Tue Jun 12 01:58:33 2012 |
yuta | Update | Green Locking | aligned Y arm to Y end green | [Jenne, Yuta]
We aligned Y arm to the Y end green |
|
|
6808
|
Tue Jun 12 20:35:46 2012 |
yuta | Update | Green Locking | c1gcv recompiled | [Jamie, Yuta]
We recompiled c1gcv because the order |
|
|
6809
|
Tue Jun 12 23:18:18 2012 |
yuta | Update | Green Locking | I-Q signals for the beat | [Mengyao, Yuta]
|
|
|
6810
|
Wed Jun 13 02:11:59 2012 |
yuta | Update | Green Locking | my first modescan (sort of) | I stabilized Y arm length by using only
I phase coarse signal from the beat(C1:ALS-BEATY_COARSE_I_ERR).
I sweeped the arm length by injecting |
|
|
6812
|
Wed Jun 13 03:03:38 2012 |
yuta | Update | Green Locking | my first modescan (sort of) | Linear range df of the delay line technique
is about df ~ c/(2D). So, the linear range
for the fine signal(delay line length D=30m) |
|
|
6815
|
Wed Jun 13 17:39:13 2012 |
yuta | Update | Green Locking | calibrating the beatbox | [Jenne, Yuta]
We put 0 dBm sine wave to the RF input |
|
|
6816
|
Thu Jun 14 01:36:34 2012 |
yuta | Update | Green Locking | can't scan Y arm for 1FSR | [Jenne, Koji, Yuta]
We tried to scan of the Y arm but |
|
|
6817
|
Thu Jun 14 04:53:39 2012 |
yuta | Summary | Green Locking | designing ALS loop for mode scan | [[Requirement]]
Arm cavity FWHM for IR is
|
|
|
6818
|
Thu Jun 14 21:37:37 2012 |
yuta | Update | Green Locking | succeeded in 1FSR mode scan | [Jenne, Yuta]
We couldn't scan the Y arm for 1FSR |
|
|
6819
|
Fri Jun 15 00:50:54 2012 |
yuta | Update | Green Locking | scanned Y arm for 5FSR | I scanned Y arm for 5FSR (below).
I could done this after I put a whitening
filter. |
|
|
6821
|
Fri Jun 15 13:33:39 2012 |
yuta | Update | Green Locking | ADC noise contribution to ALS | ADC noise is not a limiting noise source
in a current ALS setup.
|
|
|
6822
|
Sat Jun 16 01:03:21 2012 |
yuta | Update | Green Locking | used longer delay line for mode scan | [Mengyao, Yuta]
Last night, I used 1.5 m delay line |
|
|
6824
|
Sat Jun 16 13:01:17 2012 |
yuta | Update | Green Locking | scanned Y arm for 5FSR |
|
|
|
6825
|
Sat Jun 16 18:17:00 2012 |
yuta | Update | Green Locking | Y arm length using 5FSR scan | Calibrating error signal to beat
frequency;
I injected 0 dBm RF sine wave |
|
|
6827
|
Sat Jun 16 19:32:11 2012 |
yuta | Update | Green Locking | Y arm length using 5FSR scan | I know!
But I think there's some error (~
10% ?) in calibrating the beatbox. In elog |
|
|
6828
|
Mon Jun 18 02:31:43 2012 |
yuta | Summary | Green Locking | analysis of mode scan data | I analyzed mode scan data from last week.
Mode matching ratio for Y arm is 86.7 |
|
|
6830
|
Mon Jun 18 17:28:03 2012 |
yuta | Summary | Computers | bugs in CDS_PARTS/simLinkParts/Fcn | Fcn module in CDS_PARTS is used to include
a user defined function in a model.
We should be able to use this by entering |
|
|
6832
|
Mon Jun 18 23:54:31 2012 |
yuta | Update | Green Locking | phase tracker for ALS | [Koji, Jenne, Yuta]
Summary: |
|
|
6834
|
Tue Jun 19 23:36:19 2012 |
yuta | Update | LSC | calibrated POY error signal | [Jenne, Yuta]
We calibrated POY error signal(C1:LSC-POY11_I_ERR). |
|
|
6836
|
Wed Jun 20 00:02:16 2012 |
yuta | Update | Green Locking | slower scan using phase tracking ALS | For those of you who want to see plots
from slower scan.
|
|
|
6838
|
Wed Jun 20 16:37:11 2012 |
yuta | Update | Locking | ETMX 1064 trans camera | [Jenne, Yuta]
We made ETMXT camera working. |
|
|
6840
|
Wed Jun 20 18:09:23 2012 |
yuta | Update | Locking | both arms aligned, ITMX oplev centered | [Jenne, Yuta]
We aligned FPMI. I also centered ITMX |
|
|
6841
|
Wed Jun 20 18:43:57 2012 |
yuta | Update | LSC | calibrated POX error signal | [Jenne, Yuta]
We did the same calibration for POX. |
|
|
6847
|
Thu Jun 21 12:56:49 2012 |
yuta | Update | Locking | ETMX 1064 trans camera |
|
|
|
6849
|
Thu Jun 21 15:36:51 2012 |
yuta | Update | Locking | X arm alignment | I aligned X arm so that the beam spot comes
roughly on the center.
|
|
|
6853
|
Fri Jun 22 10:52:18 2012 |
yuta | Update | Green Locking | 2 arm ALS - Success!!!! | Answers to questions from Koji.
|
|
|
6859
|
Sat Jun 23 02:29:18 2012 |
yuta | Update | Green Locking | X arm mode scan results | X
arm finesse is 416 +/- 6, mode-matching ratio
is 91.2 +/- 0.3% |
|
|
6861
|
Sat Jun 23 19:57:22 2012 |
yuta | Summary | Computers | c1ioo is down | I tried to restart c1ioo becuase I can't
live without him.
|
|
|
6862
|
Sun Jun 24 00:10:45 2012 |
yuta | Update | Green Locking | current beat electronics | I moved amplifiers for beat PD at PSL table
to 1X2 rack. Current beat setup from PD to
ADC is shown below. Setup for X beat and |
|
|
6863
|
Sun Jun 24 23:42:31 2012 |
yuta | Update | Computer Scripts / Programs | PMC locker | I made a python script for relocking PMC.
It currently lives in /opt/rtcds/caltech/c1/scripts/PSL/PMC/PMClocker.py. |
|
|
6868
|
Mon Jun 25 15:07:49 2012 |
yuta | Update | IOO | MC beam spot trend | I adjusted MC WFS offsets using /opt/rtcds/caltech/c1/scripts/MC/WFS/WFS_FilterBank_offsets.
Beam spot positions on MC mirrors |
|
|
6871
|
Mon Jun 25 17:48:27 2012 |
yuta | Update | Computer Scripts / Programs | script for finding IR resonance using ALS | I made a python script for finding IR resonance
using ALS. It currently lives in /opt/rtcds/caltech/c1/scripts/ALS/findIRresonance.py. |
|
|
6873
|
Tue Jun 26 00:52:18 2012 |
yuta | Update | Computer Scripts / Programs | PMC locker |
|
|
|
6874
|
Tue Jun 26 01:30:13 2012 |
yuta | Summary | Green Locking | simultaneous hold and release of the arm (aka two arm ALS) | To get the feeling of the master of IFO,
I;
|
|
|
6875
|
Tue Jun 26 22:37:43 2012 |
yuta | Update | IOO | energized OMC stages | [Koji, Yuta]
We checked that PZTs between SRM and |
|
|
6876
|
Wed Jun 27 03:43:52 2012 |
yuta | Summary | IOO | how to improve mode matching to arms | From the mode scan measurements of the
arms(elog #6859),
~6% of mode-mismatch comes from 2nd-order |
|
|
6884
|
Wed Jun 27 16:23:12 2012 |
yuta | Update | IOO | AS and REFL on AP table aligned | I touched steering mirrors for AS and REFL
at AP table.
AS beam and REFL beam now hits cameras |
|
|
6885
|
Wed Jun 27 23:54:21 2012 |
yuta | Update | Computer Scripts / Programs | image capturing script | Mike J. came tonight and he fixed Sensoray
(elog #6645).
He recompiled it and fixed it. |
|
|
6886
|
Thu Jun 28 00:50:48 2012 |
yuta | Update | Locking | PRMI work started, commissioning plan | My goal for tonight was to lock PRMI,
grasp the current situation
by my eye, |
|
|
6889
|
Thu Jun 28 20:59:28 2012 |
yuta | Bureaucracy | Locking | vent for PRC check, TOMORROW! | Koji, Jamie and I talked together and I decided to VENT TOMORROW |
|
|
6891
|
Fri Jun 29 01:49:36 2012 |
yuta | Bureaucracy | Locking | vent for PRC check, TOMORROW! |
|
|
|
6892
|
Fri Jun 29 02:17:40 2012 |
yuta | Update | IOO | prep for the vent - beam attenuating | [Koji, Jamie, Yuta]
We attenuated the incident beam (1.2 |
|
|
6893
|
Fri Jun 29 03:21:32 2012 |
yuta | Update | General | prep for the vent - others | 1. Turned off high voltage power supplies
for PZT1/2 (input PZTs) and OMC stage 1/2.
They live in 1Y3 rack and AUX_OMC_NORTH rack. |
|
|
6896
|
Fri Jun 29 16:41:41 2012 |
yuta | Update | General | PRM was NOT installed backwards | [Koji, Steve, Jamie, Yuta]
So, PRM was NOT flipped...... |
|
|
6899
|
Sun Jul 1 13:20:09 2012 |
yuta | Update | IOO | MC in low power | I modified autolocker for MC in low power
mode (/opt/rtcds/caltech/c1/scripts/MC/autolockMCmain40m_low_power)
to make it work with the current directory |
|
|
6900
|
Sun Jul 1 23:48:15 2012 |
yuta | Summary | General | clipping at BS, my plan | [Koji, Yuta]
We aligned PRMI and inspected BS chamber. |
|
|
6903
|
Mon Jul 2 18:27:25 2012 |
yuta | Update | General | BS and ITMX chambers closed | [Koji, Steve, Jamie, Jenne, Yuta]
We opened BS and ITMX chambers, took |
|