| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
6910
|
Tue Jul 3 20:51:06 2012 |
yuta | Update | IOO | MC in vacuum is back | MC came back to the state as it was before
the vent.
|
|
|
6913
|
Wed Jul 4 20:13:46 2012 |
yuta | Bureaucracy | Locking | PRC commissioning plan | Issues in PRC:
1. Power recycling gain is
too low (~ 15 instead of 40, according to |
|
|
6914
|
Wed Jul 4 21:11:53 2012 |
yuta | Update | Locking | FPMI in vacuum is back | I aligned FPMI and greens. There's no recognizable
difference between before and after the vent.
|
|
|
6915
|
Thu Jul 5 01:20:58 2012 |
yuta | Summary | CDS | slow computers, 0x4000 for all DAQ status | ALS looks OK. I tried to lock FPMI using
ALS, but I feel like I need 6 hands to do
it with current ALS stability. Now I have |
|
|
6916
|
Thu Jul 5 01:34:11 2012 |
yuta | Update | Locking | MI with X arm ALS | I tried to lock FPMI using ALS, but I could
not take care of ALS for both arms + MI.
So, I decided to try one arm + MI. |
|
|
6922
|
Thu Jul 5 13:38:05 2012 |
yuta | Summary | Locking | cavity g-factor from mode scan | Cavity
g-factor for X arm is 0.3737 +/- 0.002, Y
arm is 0.3765 +/- 0.003. |
|
|
6925
|
Fri Jul 6 01:39:56 2012 |
yuta | Update | Locking | MI + Y arm ALS succeed, but not both | MI with X arm length stabilized off resonance
and Y arm length stabilized at resonance
using ALS succeed, but I couldn't bring X |
|
|
6926
|
Fri Jul 6 02:46:03 2012 |
yuta | Update | Locking | Y arm ALS handing off to LSC | Handing off the servo from ALS to LSC for
one arm is quite easy because servo filters
are pretty much same for ALS and LSC. I demonstrated |
|
|
6931
|
Fri Jul 6 14:10:31 2012 |
yuta | Summary | LSC | calculation of FPMI using ALS | From calculation, phase fluctuation of
reflected beam from length stabilized arm
is not disturbing MI lock. |
|
|
6938
|
Sun Jul 8 00:27:54 2012 |
yuta | Summary | Locking | calibrating phase tracking mode scan data | FSR
for X/Y arm are 3.97 +/- 0.03 MHz and 3.96
+/- 0.02 MHz respectively. This |
|
|
6940
|
Sun Jul 8 19:31:53 2012 |
yuta | Update | Locking | characterizing LSC arm lock by ALS error signal | RMS
of X/Y arm length using POX/POY lock is <160
pm and <120 pm respectively. |
|
|
6941
|
Mon Jul 9 05:02:58 2012 |
yuta | Update | Locking | adjusted ALS filters, current RMS | I adjusted filters of ALS to give more
phase margin.
RMS |
|
|
6942
|
Mon Jul 9 05:15:46 2012 |
yuta | Update | Green Locking | locked MI while ALS using ASDC | I locked MI while both arm length are stabilized
at IR resonance. This could be done using
DC READOUT, |
|
|
6947
|
Mon Jul 9 23:18:09 2012 |
yuta | Update | LSC | PRMI got more stable a bit | I modified filiters for LSC_MICH and LSC_PRCL.
Although modes we can see at POP and
AS look still bad, error signals are less |
|
|
6950
|
Tue Jul 10 03:16:17 2012 |
yuta | Update | LSC | PRMI got more stable a bit | I modified filiters for LSC_MICH and LSC_PRCL
again to cope with power recycling gain fluctuation.
After some more alignment, power recycling |
|