| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6407
|
Tue Mar 13 19:14:40 2012 |
kiwamu | Update | LSC | Noise estimatino in the REFL33Q as a MICH sensor |
A feasibility study of the REFL33Q as a MICH
sensor was coarsely performed from the point |
|
|
6409
|
Wed Mar 14 03:34:44 2012 |
kiwamu | Update | SUS | Adjustment of BS suspension output matrix : coupling from SIDE to POS | [Rana / Kiwamu]
We put some elements in the |
|
|
6410
|
Wed Mar 14 04:03:37 2012 |
kiwamu | Update | IOO | PZT1 and associate extra works | As the PZT1 has not been functional, I
have been aligning the Y arm to the input
beam instead of aligning the beam to the |
|
|
6411
|
Wed Mar 14 04:19:51 2012 |
kiwamu | Update | LSC | REFL33Q for MICH control : not good | I tried the REFL33Q for controlling
MICH in the PRMI configuration (#6407)
|
|
|
6414
|
Wed Mar 14 13:16:50 2012 |
kiwamu | Update | LSC | A correction on Noise estimatino in the REFL33Q | A
correction on the previous elog about the
REFL33Q noise: |
|
|
6426
|
Fri Mar 16 16:03:03 2012 |
kiwamu | Update | IOO | MC alignment servo : put some offsets in the TRANS QPD signal | The
MC alignment servo wasn't great in the last
1 hour or so as it kept disturbing the MC |
|
|
6436
|
Thu Mar 22 16:45:06 2012 |
kiwamu | Update | CDS | c1scx and c1scy not properly running | It
seems that neither c1scx nor c1scy is working
properly as their ADC counts are showing |
|
|
6437
|
Thu Mar 22 17:35:59 2012 |
kiwamu | Update | Locking | mode profiles of the POP and POX beams : not bright enough | I tried to measure the beam profiles at
the POP and POX ports as Koji mentioned in
his entry (#6421). |
|
|
6440
|
Fri Mar 23 01:59:59 2012 |
kiwamu | Update | IOO | REFL beam currently unavilable | [Suresh / Kiwamu]
Currently
the REFL beam is bypassed by additional mirrors |
|
|
6444
|
Mon Mar 26 15:15:16 2012 |
kiwamu | Update | IOO | expected beam profile of PRM reflection | I have estimated how the mode profile
of the PRM reflection should be, as shown
in the plot blow. |
|
|
6445
|
Mon Mar 26 16:25:44 2012 |
kiwamu | Update | IOO | expected v.s. measured beam profile of PRM reflection | [Suresh / Kiwamu]
We did the 2nd round of
the PRM reflection mode scan on Friday. |
|
|
6446
|
Mon Mar 26 18:04:43 2012 |
kiwamu | Update | IOO | mode scan at the REFL port | For those who are interested in the
actual data, I attache the actual data in
zip file together with a python plot code. |
|
|
6450
|
Tue Mar 27 02:46:28 2012 |
kiwamu | Update | IOO | REFL beam available | The dump and some temporary mirrors
were removed and now the REFL beam is available
again. |
|
|
6471
|
Fri Mar 30 10:20:51 2012 |
kiwamu | Update | LSC | locking last night | I was trying to make the DRMI lock more
robust.
Increasing the gains of the oplev |
|
|
6474
|
Sat Mar 31 08:01:07 2012 |
kiwamu | Update | LSC | DRMI measurement | I have measured the sensing matrix of the
DRMI although the lock still doesn't stay
for a long time. |
|
|
6488
|
Thu Apr 5 06:27:51 2012 |
kiwamu | Update | LSC | AS110 sideband monitor installed | [Jenne / Kiwamu]
We |
|
|
6489
|
Thu Apr 5 07:19:16 2012 |
kiwamu | Update | LSC | DRMI locking | I
tried locking the DRMI to the signal-extraction
condition with the new trigger by AS110. |
|
|
6506
|
Sat Apr 7 01:56:05 2012 |
kiwamu | Update | LSC | OSA signal in DRMI condition | It wasn't a dream or illusion -- I was
locking the DRMI to the right condition last
Wednesday (#6489). |
|
|
6508
|
Sat Apr 7 06:58:34 2012 |
kiwamu | Update | LSC | DRMI lock : lost good alignment | Somehow I lost the good alignment, where
the lock can be frequently acquired and hence
I didn't go further ahead. |
|
|
6512
|
Mon Apr 9 18:18:14 2012 |
kiwamu | Update | LSC | DRMI time series | Here is a time series when the DRMI is
being locked.
You can see that the AS110 goes up |
|
|
7534
|
Fri Oct 12 01:56:26 2012 |
kiwamu | Update | General | Alignment situation of interferometer | [Koji / Kiwamu]
We have realigned the interferometer
except the incident beam. |
|
|
8866
|
Thu Jul 18 01:10:00 2013 |
kiwamu | Update | Green Locking | ALS Y performance with the new whitening filter |
|
|
|
9051
|
Thu Aug 22 10:20:32 2013 |
kiwamu | Update | LSC | DRMI Locked for 1+ minute!!!!!! | Wonderful
! I like the video -- the spatial |
|
|
2631
|
Tue Feb 23 13:37:04 2010 |
kiwamu and steve | Configuration | VAC | venting the 40m vac envelope | Kiwamu and Steve have started venting
the 40m vacuum envelope.
Preparation: |
|
|
2636
|
Tue Feb 23 19:07:43 2010 |
kiwamu and steve | Configuration | VAC | vent is completed |
|
|
|
2444
|
Tue Dec 22 11:23:51 2009 |
kiwamu, Steve | Update | IOO | MC relocked | In this morning I found MC unlocked.
Steve restored the watchdogs before
I found that. |
|
|
2707
|
Wed Mar 24 04:22:51 2010 |
kiwamu, matt | Update | Green Locking | two NPRO PLL | Now some pedestals, mirrors and lenses
are left on the PSL table, since we are on
the middle way to construct a PLL setup which |
|
|
2712
|
Wed Mar 24 15:59:59 2010 |
kiwamu, matt | Update | Green Locking | leave PLL locked | Matt checked it in this morning and he
found it's been locked during the night.
|
|
|
2706
|
Wed Mar 24 03:58:18 2010 |
kiwamu, matt, koji | Update | Green Locking | leave PLL locked | We are leaving the PLL as it is locked
in order to see the long term stability.
And we will check the results in early morning |
|
|
2714
|
Thu Mar 25 17:29:48 2010 |
kiwamu, mott | Update | Green Locking | PLL two NPROs | In this afternoon, Mott and I tried to
find a beat note between two NPROs which
are going to be set onto each end table for |
|
|
2462
|
Mon Dec 28 23:56:44 2009 |
kiwamu, rana | Update | Computers | add the HILO drift channels to the burt | The HIGH and LOW channels are added into
the burt request file "/target/c1losepics/autoBurt.req".
These values are used to colorize |
|
|
2690
|
Sun Mar 21 20:08:20 2010 |
kiwamu, rana | Update | PSL | EOM wasit size | We
are going to set the waist size to 0.1 mm for |
|
|
2464
|
Tue Dec 29 04:28:27 2009 |
kiwamu, rana, haixing | Update | Cameras | New Video Switch Installed | We have installed the new |
|
|
2538
|
Thu Jan 21 11:08:30 2010 |
kiwamu, steve | Update | VAC | Dry Pump replacement | This morning I and Steve replaced
the dry fore pump of TP3, which is located
under the y-arm. |
|
|
5261
|
Thu Aug 18 10:17:04 2011 |
kiwamu, steve | Update | SUS | oplevs reestablished at Vertex | Kiwamu and Steve, from yesterday
PRM and BS oplev paths were relaid
after setting 1/2 OSEM voltages. The incident |
|
|
2676
|
Tue Mar 16 05:10:39 2010 |
koji | Update | Environment | Earthquake, Mag 4.4 | Some of the suspensions got watchdog tripped
-> enabled -> damped.
The MC mirrors got slightly misaligned. |
|
|
2894
|
Fri May 7 11:21:49 2010 |
koji | Update | 40m Upgrading | New improved design for the 11MHz photodiode | How much is the width?
|
|
|
3577
|
Wed Sep 15 16:00:26 2010 |
koji, steve | Update | MOPA | | We removed the Lightwave MOPA Controller
from 1X1 (south) It was a real painfully
messy job to pull out the umbilical. |
|
|
3578
|
Wed Sep 15 16:12:35 2010 |
koji, steve | Update | MOPA | MOPA Controller is taken out of the PSL rack | We removed the Lightwave MOPA Controller,
PA#102, NPRO206 power supply to make room
for the IOO chassy at 1X1 (south) rack. |
|
|
3604
|
Fri Sep 24 00:56:35 2010 |
koji, tara | Update | Electronics | testing TTFSS | We
found that a transistor was broken from yesterday
spark too. We partially fixed TTFSS, and |
|
|
3607
|
Fri Sep 24 23:47:10 2010 |
koji, tara | Update | Electronics | testing TTFSS | Q3, a PZT2222A transistor,
on D0901846 is replaced by a GE-82. However,
the board is still not fully function. |
|
|
3617
|
Tue Sep 28 21:11:52 2010 |
koji, tara | Update | Electronics | Fixing the new TTFSS | We
found a small PCB defect which is an excess
copper shorting circuit on the daughter board, |
|
|
4777
|
Wed Jun 1 13:33:22 2011 |
koji, tara | Update | Electronics | TTFSS #7 | We replaced GE81 by PZT2907A (PNP transistor)
in TTFSS #7, it's working fine.
Last time I broke Q4 transistor, |
|
|
3596
|
Thu Sep 23 02:23:04 2010 |
koji,tara | Summary | Electronics | Testing new TTFSS | I tested the new table top
frequency stabilization system(TTFSS), |
|
|
7952
|
Tue Jan 29 10:59:37 2013 |
lazy person | Frogs | General | better plan |
I propose we work around this
problem with giant |
|
|
4752
|
Fri May 20 01:02:50 2011 |
loose connection hunter | Update | SUS | loose connection on ETMY rack | The
UL signal of the shadow sensor on ETMY went
to zero this evening. |
|
|
3701
|
Tue Oct 12 23:35:12 2010 |
mafalda | Update | Computers | celan-installed CentOS 5.5 on mafalda |
|
|
|
8769
|
Thu Jun 27 17:49:17 2013 |
manasa | Update | Green Locking | c1als model edited |
|
|
|
8772
|
Thu Jun 27 19:17:03 2013 |
manasa | Update | LSC | Xarm ALS out-of-loop noise | Measured
frequency noise is ~10Hz/rtHz @100Hz. |
|
|
8779
|
Fri Jun 28 02:12:21 2013 |
manasa | Update | LSC | PRMI + X arm ALS | X arm stabilized
using ALS while PRMI stayed locked |
|