| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
9163
|
Thu Sep 26 01:49:28 2013 |
Masayuki | Summary | Green Locking | FPMI noise caused by ARM locking |
Measurement |
|
|
9167
|
Thu Sep 26 23:02:40 2013 |
rana | Update | LSC | FPMI noise caused by ARM locking | Hidden in Nakano-kun's previous entries
was that the phase margin of the X-Arm was
only 9 degrees!! This extremely close to |
|
|
9168
|
Fri Sep 27 00:48:53 2013 |
Masayuki | Update | LSC | FPMI noise caused by ARM locking |
|
|
|
17069
|
Tue Aug 9 19:54:31 2022 |
yuta | Summary | LSC | FPMI locking tonight | [Tega, Anchal, Yuta]
We resored FPMI locking settings. |
|
|
17012
|
Mon Jul 18 16:39:07 2022 |
Paco | Summary | LSC | FPMI locking procedure using REFL55 and AS55 | [Yuta, Paco]
In summary, we locked FPMI using
REFL55_I, REFL55_Q, and AS55_Q. The key to |
|
|
17016
|
Mon Jul 18 21:41:42 2022 |
Anchal | Summary | LSC | FPMI locking procedure using REFL55 and AS55 | Now that you have found a working configuration,
I suggest we update CARM and DARM filter
banks so that they are used in locking those |
|
|
14926
|
Wed Oct 2 23:15:02 2019 |
gautam | Update | LSC | FPMI locking | Summary:
I was able to lock the FPMI. The
lock was quite stable. However, |
|
|
17369
|
Wed Dec 21 12:18:44 2022 |
Paco | Summary | LSC | FPMI locked, but FPMI BHD not locked | [Yuta, Paco]
We tried restoring the FPMI BHD
readout from yesterday but |
|
|
17367
|
Tue Dec 20 18:27:14 2022 |
Anchal | Summary | LSC | FPMI locked, DARM calibration data taken, FPMI BHD locked! | [Anchal, Paco, Yuta]
FPMI |
|
|
17366
|
Tue Dec 20 09:20:18 2022 |
Paco | Summary | LSC | FPMI locked and cal | [Anchal, Yuta, Paco]
Late elog (from yesterday) -- We
locked FPMI, YAUX, and turned on calibration |
|
|
7240
|
Tue Aug 21 01:54:09 2012 |
Jenne | Update | Locking | FPMI locked - arms locked with IR | I (for the first time personally) locked
the FPMI. I have data for the POX11I,
POY11I, AS55Q error signals for each arm |
|
|
8170
|
Tue Feb 26 11:55:11 2013 |
Manasa | Update | Locking | FPMI locked | [Yuta, Manasa]
FPMI locked. |
|
|
8171
|
Tue Feb 26 15:32:47 2013 |
Jenne | Update | Locking | FPMI locked |
|
|
|
9157
|
Tue Sep 24 22:19:57 2013 |
Manasa | Update | General | FPMI locked | [Masayuki, Manasa]
We locked FPMI and measured the FPMI
noise (power spectrum of error signal - MICH_IN1) |
|
|
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.
|
|
|
17359
|
Wed Dec 14 17:01:39 2022 |
Paco | Summary | LSC | FPMI in the post-cds upgrade era | [Paco, Anchal, Koji]
A possible long-hidden
bug of MC2 dewhitening switching was found |
|
|
17414
|
Tue Jan 24 11:21:59 2023 |
yuta | Summary | BHD | FPMI displacement noise with 60 Hz harmonics side lobes | Just to show how bad 60 Hz noise is, I
compared FPMI displacement noise with pre-BH44
era (measured on Jan 13, 40m/17400). |
|
|
17415
|
Tue Jan 24 16:12:07 2023 |
rana | Summary | BHD | FPMI displacement noise with 60 Hz harmonics side lobes | 1) do a comparison with the whtiening before
the ADC on/off. This will tell us if it is
pickup before the whtiening filter or not. |
|
|
17593
|
Tue May 16 08:42:14 2023 |
Paco | Update | ASC | FPMI differential ASC - II | We
aligned the AS WFS and measured some angular
motion from ETMX |
|
|
17589
|
Wed May 10 17:11:34 2023 |
Paco | Update | ASC | FPMI differential ASC - I | I
began commissioning the AS WFS for (PR)FPMI
configurations |
|
|
17089
|
Thu Aug 18 14:49:35 2022 |
Yehonathan | Summary | LSC | FPMI Sensitivity | {Yuta, Yehonathan}
We wrote a notebook found on Git/40m/measurements/LSC/FPMI/NoiseBudget/FPMISensitivity.ipynb
for calculating the MICH, DARM (currently |
|
|
17091
|
Thu Aug 18 18:10:49 2022 |
Koji | Summary | LSC | FPMI Sensitivity | The overlapping plot of the calibrated
error and control signals gives you an approximately
good estimation of the freerun fluctuation, |
|
|
4180
|
Thu Jan 20 22:17:12 2011 |
rana | Summary | LSC | FPMI Displacement Noise | I found this old plot in an old elog entry
of Osamu's (original
link). |
|
|
17499
|
Wed Mar 8 18:32:22 2023 |
Anchal | Configuration | Calibration | FPMI DARM calibration run set to happen at 1 am | On rossa in tmux session name FPMI_DARM_Cal,
a script is running to take FPMI DARM calibration
data at 1:00 am on March 9th. Please do not |
|
|
17502
|
Thu Mar 9 19:20:44 2023 |
Anchal | Configuration | Calibration | FPMI DARM calibration run set to happen at 1 am | Running this test again tonight. Will probably
run it every night now.
|
|
|
17492
|
Sat Mar 4 18:57:18 2023 |
Paco | Configuration | Calibration | FPMI DARM calibration run | Locked FPMI, measured DARM and CARM OLTFs,
locked YAUX and measured the analog loop
TF at the cal line frequencies. Turned the |
|
|
17468
|
Thu Feb 16 14:44:06 2023 |
yuta | Update | BHD | FPMI BHD with BH55 recovered | FPMI BHD with LO phase locked using BH55
is recovered after 60 Hz frequency noise
saga. |
|
|
17395
|
Thu Jan 12 12:00:09 2023 |
Paco | Summary | LSC | FPMI BHD sensitivity curve with higher resolution upto 6.9 kHz | Here's the same sensitivity plot from
yesterday (40m/17392),
but with higher frequency resolution, upto |
|
|
17506
|
Mon Mar 13 19:53:36 2023 |
yuta | Update | BHD | FPMI BHD sensing matrix measurement with individual lines | FPMI BHD sensing matrix was measured by
an updated method with updated RF demodulation
phases for REFL55 and AS55. |
|
|
17392
|
Wed Jan 11 16:56:57 2023 |
yuta | Summary | LSC | FPMI BHD recovered, LO phase noise not limiting the sensitivity | [Paco, Yuta]
We recovered FPMI BHD, and sensitivity |
6x |
|
835
|
Thu Aug 14 15:51:35 2008 |
josephb | Summary | Cameras | FOUND! The Missing Standoff! | We used a zoom lens on the GC750 to take this
picture of the standoff while inside a plastic
rubber-glove bag. The standoff with bag |
|
|
11110
|
Fri Mar 6 14:29:59 2015 |
manasa | Update | General | FOL troubleshooting | [EricQ, Manasa]
Domenica:
Since Domenica |
|
|
11123
|
Mon Mar 9 14:43:31 2015 |
manasa | Update | General | FOL troubleshooting | Figuring out the problem with
frequency counter readouts:
|
|
|
11128
|
Tue Mar 10 17:48:07 2015 |
manasa | Update | General | FOL troubleshooting | [Koji, Manasa]
This problem was solved by changing
the Frequency Counter range settings. |
|
|
11135
|
Wed Mar 11 19:48:25 2015 |
Koji | Update | General | FOL troubleshooting | There is a frequency counter code written
by the summer student.
The code needed some cleaning up. |
|
|
11137
|
Thu Mar 12 11:57:38 2015 |
Koji | Update | General | FOL troubleshooting | BTW, during this trouble shoot, we looked
at the IR beatnote spectrum between the Xend
and the PSL. |
|
|
11650
|
Tue Sep 29 19:38:09 2015 |
gautam | Update | General | FOL fiber box revamp | The new 2x2 fiber couplers arrived today
so Eric gave me an overview on the changes
to be made to the existing configuration |
|
|
11652
|
Wed Sep 30 13:07:13 2015 |
gautam | Update | General | FOL fiber box revamp | Eric pointed out that the 1x2 couplers
that were used in the previous arrangement
and which I recycled, were in fact NOT |
|
|
11670
|
Tue Oct 6 16:56:40 2015 |
gautam | Update | General | FOL fiber box revamp | [gautam, ericq]
We had a look at the IR beat (PSL+Xarm)
today using the new FOL fiber box, and compared |
|
|
11102
|
Thu Mar 5 12:27:27 2015 |
manasa | Update | General | FOL fiber box on the PSL table | Working
around the PSL table
I have put the FOL |
|
|
10352
|
Fri Aug 8 14:27:18 2014 |
Akhil | Update | Computer Scripts / Programs | FOL Scripts | The scripts written for interfacing
the FC with R Pi, building EPICS database,
piping data into EPICS channels,PID loop |
|
|
10376
|
Wed Aug 13 16:12:55 2014 |
Harry | Update | General | FOL Layout Diagram | Per Q's request, I've made up a diagram
of the complete FOL layout for general reference.
|
|
|
10273
|
Fri Jul 25 17:28:31 2014 |
Harry | Update | General | FOL Box and PER Update | Purpose
We're putting together a box to go
into the 1X2 rack, to facilitate the frequency |
|
|
1498
|
Mon Apr 20 05:18:42 2009 |
Yoichi | Configuration | Locking | FM6 and FM10 of LSC-MC were restored | During tonight's locking work, I realized
that FM6 and FM10 (both resonant gains around
20Hz) were actually activated by cm_step.
|
|
|
10226
|
Thu Jul 17 02:57:32 2014 |
Andres | Update | 40m Xend Table upgrade | FInish Calculation on Current X-arm mode Matching | Data and Calculation for the
Xarm Current Mode Matching |
|
|
10237
|
Fri Jul 18 16:52:56 2014 |
Andres | Update | 40m Xend Table upgrade | FInish Calculation on Current X-arm mode Matching |
|
|
|
17711
|
Mon Jul 24 23:01:10 2023 |
Koji | Summary | CDS | FIXED: rossa can't boot | Compared the network settings between some
of the machines.
It seemed that we can write network |
|
|
17738
|
Mon Jul 31 22:25:07 2023 |
Koji | Update | PEM | FIXED: Strange behavior of ITMX and ITMY probably due to DAC issue | [Hiroki, Yehonathan, Yuta, Koji]
Summary
The |
|
|
17746
|
Wed Aug 2 14:50:22 2023 |
Koji | Update | PSL | FIXED: Remote switching of PSL shutter is not working | [JC Koji]
c1vac was hard rebooted. This fixed
the PSL shutter issue. |
|
|
17786
|
Tue Aug 15 17:11:17 2023 |
Koji | Update | IOO | FIXED: PMC issue | Summary
The problem in the PMC
Frequency Reference Card (35.5MHz) was fixed. |
7x |