| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
11790
|
Thu Nov 19 16:06:54 2015 |
yutaro | Update | Optical Levers | Calibration of oplevs for ITMY/ETMY | I'm sorry. I will be careful about
that. And I updated the plots in elog
11785. |
|
|
11789
|
Thu Nov 19 15:16:24 2015 |
ericq | Update | CDS | c1iscey IO chassis now has brackets | [Steve, ericq]
Brackets for the c1iscey IO
chassis cards have been installed. Now, I |
|
|
11788
|
Thu Nov 19 14:50:34 2015 |
Max Isi | Update | General | New 2D histogram plot for summary pages | A new type of plot is now available for
use in the summary pages, based on EricQ's 2D
histogram plots (elog |
|
|
11787
|
Wed Nov 18 23:40:01 2015 |
rana | Update | Optical Levers | Calibration of oplevs for ITMY/ETMY | OMG. Please try to use larger fonts and
PDF so that we can read the plots.
|
|
|
11786
|
Wed Nov 18 23:18:07 2015 |
ericq | Update | Computer Scripts / Programs | nodus /boot cleared up | The /boot partition was filling up with
old kernels. Nodus has automatic security
updates turned on, so new kernels roll in |
|
|
11785
|
Wed Nov 18 22:26:33 2015 |
yutaro | Update | Optical Levers | Calibration of oplevs for ITMY/ETMY | Based on elog
1403, I calibrated the oplevs for ITMY/ETMY.
Summary of this method is following: |
|
|
11784
|
Wed Nov 18 20:49:05 2015 |
rana | Update | Computer Scripts / Programs | nodus boot getting full | controls@nodus|~ > df -h
Filesystem
Size Used |
|
|
11783
|
Wed Nov 18 17:32:36 2015 |
yutaro | Update | Optical Levers | Beam centering for the oplev of ITMY | [yutaro, Koji]
|
|
|
11782
|
Wed Nov 18 17:09:22 2015 |
Koji | Summary | PSL | PMC Servo analysis | Summary
The PMC servo was analysed. OLTF
was measured and modeled by ZPK (Attachment |
|
|
11781
|
Wed Nov 18 16:53:17 2015 |
Koji | Summary | PSL | PMC PZT capacitance | The PMC PZT capacitance was measured.
- Turn off the HV supplies. Disconnect
HV OUT cable. |
|
|
11780
|
Wed Nov 18 16:51:58 2015 |
Koji | Summary | PSL | PMC servo calibration | Summary
The PMC servo error (MIX OUT MON
on the panel) and actuation (HV OUT MON) |
|
|
11779
|
Wed Nov 18 11:22:13 2015 |
yutaro | Update | ASC | Loss maps of arm cavities | I got linear relation between these. The
results and method are below.
|
|
|
11778
|
Wed Nov 18 10:10:53 2015 |
ericq | Update | CDS | c1iscey IO chassis missing brackets | Steve and I inadvertently discovered
that the c1iscey IO chassis doesn't
have brackets to secure the cards where the |
|
|
11777
|
Tue Nov 17 20:57:43 2015 |
ericq | Update | CDS | 16Hz frame writing running again | Back to nominal FB configuration at 1131857782,
aka Nov 18 2015 04:56:05 UTC.
Weirdly, during this time, the script |
|
|
11776
|
Tue Nov 17 20:40:08 2015 |
yutaro | Summary | ASC | Loss maps of arm cavities | In preparation for the measurement of loss
maps of arm cavities, I measured the relationship
between: |
|
|
11775
|
Tue Nov 17 16:21:10 2015 |
Koji | Summary | PSL | PMC servo circuit review, follow up measurements | I'm still analyzing the open loop TF
data. Here I report some nominal settings
of the PMC servo |
|
|
11774
|
Tue Nov 17 15:59:23 2015 |
rana | Update | SUS | ITMX UL calmed? | Although this noise is bad, we have always
had these kind of humps around the bounce
mode. Our interpretation in the past was |
|
|
11773
|
Tue Nov 17 15:49:23 2015 |
Koji | Configuration | IOO | MC Autolocker modified | /opt/rtcds/caltech/c1/scripts/MC/AutoLockMC.csh
was modified last night.
1. Autolocker sometimes forget |
|
|
11772
|
Tue Nov 17 14:31:25 2015 |
ericq | Update | CDS | 16Hz frame writing temporarily disabled | To test the effect on EPICS latency, I've
restarted daqd with modified ini files which
disable all frame writing of 16Hz channels. |
|
|
11771
|
Tue Nov 17 10:06:53 2015 |
Steve | Update | General | water leak in east arm |
|
|
|
11770
|
Tue Nov 17 00:57:21 2015 |
ericq | Update | SUS | ITMX UL calmed? | After running
dither alignment for all mirrors, all oplevs
were recentered. (Except ETMY, since we did |
|
|
11769
|
Mon Nov 16 21:32:49 2015 |
Koji | Summary | PSL | PMC servo circuit review, follow up measurements | The result of the precise inspection
for the PMC servo board for the 40m was done.
The record, including the |
|
|
11768
|
Mon Nov 16 19:05:59 2015 |
Koji | Summary | PSL | PMC servo circuit review, follow up measurements | PMC follow up measurements have been done.
The servo circuit was reviewed.
Now the PMC, IMC, X/Y arms are |
|
|
11767
|
Mon Nov 16 16:18:34 2015 |
gautam | Update | General | water leak along Y-arm? | A Caltech maintenance staff dropped by
at around noon today, and told me that he
had seen a small puddle of water on the other |
|
|
11766
|
Mon Nov 16 11:48:34 2015 |
yutaro | Update | Optical Levers | Beam centering for the oplev of ETMY | [yutaro, ericq]
We made the beam spot on QPD for |
|
|
11765
|
Sun Nov 15 22:43:48 2015 |
Koji | Summary | PSL | PMC LO degraded, usual ERA-5 replacement, LO recovered | I think the IMC locking was somewhat improved.
Still it is not solid as long time before.
Before the PMC fix (attachment |
|
|
11764
|
Sat Nov 14 00:52:25 2015 |
Koji | Summary | CDS | Investion on EPICS freeze | [Yutaro, Koji]
Recently "EPICS Freeze"
is so frequent and the normal work on the |
|
|
11763
|
Fri Nov 13 22:32:54 2015 |
Koji | Summary | PSL | PMC LO degraded, usual ERA-5 replacement, LO recovered | [Yutaro, Koji]
We found that the PMC LO level
was fluctuating in a strage way (it was not |
|
|
11762
|
Fri Nov 13 17:33:39 2015 |
gautam | Update | LSC | g-factor measurements |
|
|
|
11761
|
Fri Nov 13 15:48:16 2015 |
gautam | Update | LSC | Phase tracker calibration using Rubidium standard | [yutaro, gautam]
|
6x |
|
11760
|
Fri Nov 13 15:20:24 2015 |
Steve | Update | SUS | OSEMs | Are they oscillating or not ?
|
|
|
11759
|
Thu Nov 12 16:00:55 2015 |
ericq | Update | IOO | PSL Laser turned back on | We found the PSL laser switched off. Looking
at the wall StripTool, it looks like this
happened about 4 hours ago. Gautam was working |
|
|
11758
|
Thu Nov 12 10:47:17 2015 |
ericq | Update | SUS | ETMX oplev servo disabled | By looking at the oplev and Vmons before
and after a step of 90 counts in SUS-ETMX_PIT_OFFSET,
I observe: |
|
|
11757
|
Thu Nov 12 10:22:33 2015 |
Steve | Update | PEM | possible vibration for 4days | Building:
San Pasqual walkway East to West
|
|
|
11756
|
Thu Nov 12 09:41:02 2015 |
Steve | Update | PSL | PMC | The PMC is not happy and the ITMX UL OSEM
is moving too much
|
|
|
11755
|
Thu Nov 12 09:15:56 2015 |
Steve | Update | SUS | ITMX osems | The ITMX OSEMS are oscillating. |
|
|
11754
|
Wed Nov 11 22:50:39 2015 |
Koji | Configuration | CDS | Slow machine time&date | I was gazing at the log file for Autolocker
script (/opt/rtcds/caltech/c1/scripts/MC/logs/AutoLocker.log
) |
|
|
11753
|
Wed Nov 11 22:11:15 2015 |
Koji | Update | SUS | PSL/IOO maintenance, TM SUS check up | PMC
- Before any of the following work,
I went to the PSL table and aligned the PMC. |
|
|
11752
|
Wed Nov 11 14:06:09 2015 |
rana | Update | SUS | ETMX oplev servo disabled | How many volts does it take to pitch the
ETM by 5 urad? |
|
|
11751
|
Wed Nov 11 11:41:42 2015 |
gautam | Update | General | Long cable laid out for 1pps signal | In order to synchronise the FS725 Rb clock
with our GPS timing signals, I laid out a
longish cable running from 1X7 to the |
|
|
11750
|
Tue Nov 10 19:25:42 2015 |
gautam | Update | General | FS725 Rubidium reference | In the last few days, with Koji's help,
I have recovered both the FS725 Rubidium
references from W. Bridge, one from |
|
|
11749
|
Tue Nov 10 16:34:00 2015 |
yutaro | Update | LSC | Updated interpretation of peaks |
|
|
|
11748
|
Tue Nov 10 11:41:56 2015 |
Koji | Update | LSC | Updated interpretation of peaks | FYI: I've also reported the similar
mod depths of
11M: 0.194 |
|
|
11747
|
Tue Nov 10 11:40:03 2015 |
Koji | Update | LSC | Updated interpretation of peaks | What is the uncertainty of your RoC estimation?
One measurement of the ETMY ROC
was 57.6m, but we trust another measured |
|
|
11746
|
Tue Nov 10 11:06:02 2015 |
yutaro | Update | LSC | Updated interpretation of peaks |
|
|
|
11745
|
Tue Nov 10 02:34:28 2015 |
gautam | Update | LSC | Updated interpretation of peaks | After thinking about the interpretation
of the various peaks seen in the scan through
2 FSRs, I have revised the information presented |
|
|
11744
|
Mon Nov 9 23:22:18 2015 |
ericq | Update | SUS | ETMX oplev servo disabled | During a ETMX kick that just occured, with
only local damping on, the slow VMon channels
didn't show any noticable change. |
|
|
11743
|
Mon Nov 9 16:58:59 2015 |
gautam | Update | LSC | FSR and linewidth measurements with phase tracker |
|
|
|
11742
|
Mon Nov 9 15:59:06 2015 |
ericq | Update | LSC | FSR and linewidth measurements with phase tracker |
|
|
|
11741
|
Mon Nov 9 14:24:36 2015 |
yutaro | Update | LSC | FSR and linewidth measurements with phase tracker | I'd like to add a few calculation results,
mode matching ratio for Y arm and modulation
depth. |
|