| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1793
|
Sun Jul 26 13:19:54 2009 |
rana | Update | PSL | Aligning the mode cleaner | I set the MC back to its good alignment
(June 21st) using this
procedure. The trend of the OSEM values |
|
|
1796
|
Mon Jul 27 14:12:14 2009 |
rana | Summary | SUS | TM Coil Noise Spectra | Rob noticed that the ITMY DAC channels were
saturating occassionally. Looking at the
spectrum we can see why.
|
|
|
1809
|
Wed Jul 29 19:31:17 2009 |
rana | Configuration | Computers | elog restarted | Just now found it dead. Restarted it. Is
our elog backed up in the daily backups? |
|
|
1814
|
Thu Jul 30 21:26:16 2009 |
rana | Update | IOO | MC Drumhead mode | I used COMSOL 3.5a to do a FEA of one of the
MC flat mirrors. Should be close to the same
for all the mirrors.
|
|
|
1851
|
Fri Aug 7 00:10:14 2009 |
rana | Update | PSL | Ref cav reflection PD is funky | we have a tester cable, but you don't want
it. Instead the problem is probably at the
cross-connect. The D-cable goes to a cross-connect |
|
|
1867
|
Sat Aug 8 15:08:14 2009 |
rana | Configuration | PSL | SMOO settings updated in psl.db and SVN updated | I have added/modified SMOO settings to
all of the records in psl.db appropriately.
Changes checked in to SVN. |
|
|
1868
|
Sat Aug 8 17:19:07 2009 |
rana | Update | PEM | Two Guralps plugged in, prepped for huddle test | I found that several of the cables
are unlabeled so I'm not sure what's plugged
in. In the end, I found that the TEMP_2, |
|
|
1869
|
Sat Aug 8 17:23:29 2009 |
rana | Update | PEM | offensive 2 Hz sine wave removed | Friday, we were seeing a 2 Hz harmonic
series in all of the PEM channels. Today
I found that some bad person had put in |
|
|
1870
|
Sun Aug 9 16:32:18 2009 |
rana | Update | Computers | RCG work. MDC MDP open loop transfer function | This is very nice. We have, for the first
time, a real time plant with which we can
test our changes of the control system. From |
|
|
1887
|
Tue Aug 11 23:17:21 2009 |
rana | Summary | Computers | Nodus rebooted / SVN down | Looks like someone rebooted nodus at ~3
PM today but did not elog it. Also the SVN
is not running. Why? |
|
|
1897
|
Thu Aug 13 09:22:06 2009 |
rana | Update | PEM | ranger | Rana, Jan, Jenne
We noticed that the Ranger data was
all bogus at low frequencies. So we checked |
|
|
1912
|
Sat Aug 15 18:57:48 2009 |
rana | Update | VAC | UPS failed | As Rob noted last Friday, the UPS which
powers the Vacuum rack failed. When we were
trying to move the plugs around to debug |
|
|
1920
|
Mon Aug 17 17:43:11 2009 |
rana | Summary | General | conlogger restarted | Added the conlog directory to the SVN,
minus the enormous data directory. We are
now free to make changes to the conlog code. |
|
|
1927
|
Wed Aug 19 02:17:52 2009 |
rana | Omnistructure | Environment | Control Room Workstation desks lowered to human height | There were no injuries...Now we need to
get some new chairs. |
|
|
1938
|
Tue Aug 25 00:35:04 2009 |
rana | Update | General | Transfer function of Mode Cleaner Stacks | Looks like all of the accelerometers and
seismometers have been disconnected since
early AM last Monday when Clara disconnected |
|
|
1939
|
Tue Aug 25 01:27:09 2009 |
rana | Configuration | Computers | Raid update to Framebuilder (not quite) |
|
|
|
1940
|
Tue Aug 25 02:37:53 2009 |
rana | Configuration | Computer Scripts / Programs | Firefox 3.5 installed for 64 bit linux in apps/ | |
|
|
1942
|
Tue Aug 25 11:02:39 2009 |
rana | Summary | PSL | Temperature Box | The PSL Temperature Box (D980400-B-C, what
kind of numbering scheme is that?) modified
at LHO/LLO ~8 years ago to have better resolution |
|
|
1946
|
Tue Aug 25 21:55:11 2009 |
rana | Update | PSL | reference cavity temp box temporarly out of order | There's no elog entry about what work has
gone on today, but it looks like Peter took
apart the reference cavity temperature control |
|
|
1956
|
Thu Aug 27 13:42:08 2009 |
rana | Summary | PSL | Reference Cavity Temperature Control: psl.db changes | I made the changes
to the psl.db to handle the new Temperature |
|
|
1957
|
Thu Aug 27 14:00:33 2009 |
rana | Update | PSL | RC thermal servo impulse response | I stepped the TIDALSET and looked at
what happened. Loop was closed with the very |
|
|
1968
|
Mon Sep 7 20:05:18 2009 |
rana | Update | PSL | RCTEMP v. RMTEMP | Since ~Aug. 27, the reference cavity has
been running with no thermal control. This
is not really a problem at the 40m; a 1 deg |
|
|
1970
|
Mon Sep 7 23:35:03 2009 |
rana | Update | PSL | RC thermal servo: PID script modified, database + screen added | I have added the records for the RC thermal
PID servo into the psl/slowpid.db file which
also holds the records for the SLOW servo |
|
|
1971
|
Mon Sep 7 23:51:48 2009 |
rana | Configuration | Computers | matlab installed: 64-bit linux | I have wiped out the 2008a install of 64-bit
linux matlab and installed 2009a in its place.
Enjoy. |
|
|
1976
|
Tue Sep 8 19:30:33 2009 |
rana | Update | PSL | c1psl rebooted for new RCPID database settings | The RC thermal PID is now controllable
from its own MEDM screen which is reachable
from the FSS screen. The slowpid.db and |
|
|
1983
|
Thu Sep 10 18:25:15 2009 |
rana | Update | PSL | c1psl rebooted for new RCPID database settings | I added a new database record (C1:PSL-FSS_RCPID_SETPOINT)
to allow for changing of the RC setpoint
while the loop is on. This will enable us |
|
|
1986
|
Sat Sep 12 15:40:15 2009 |
rana | Update | PSL | RC response v. can temperature | I stepped the RC can temperature |
|
|
1995
|
Wed Sep 23 19:36:41 2009 |
rana | Update | PSL | RC temperature performance | This first plot shows the RC temperature
channels' performance from 40 days ago, before
we disabled the MINCO PID controller. Although |
|
|
1998
|
Thu Sep 24 19:35:20 2009 |
rana | HowTo | Photos | 40m Google account | I've created a 40m Google account. Please
post all the 40m related photos to this site.
If you don't already have it, download Picasa |
|
|
1999
|
Thu Sep 24 20:17:05 2009 |
rana | Summary | LSC | Comparison of Material Properties for the new RFPD Mounts |
|
|
|
2005
|
Fri Sep 25 19:56:08 2009 |
rana | Configuration | Computers | NTPD restarted on c1dcuepics (to fix the MEDM screen times) | [SIZE=3][FONT=Tahoma]restarted ntp on op440m
using this syntax[/FONT][/SIZE]
|
|
|
2007
|
Sun Sep 27 12:52:56 2009 |
rana | Update | MOPA | Increasing the power from the MOPA | This is a trend of the last 20 days. After
our work with the NPRO, we have recovered
only 5% in PMC trans power, although there's |
|
|
2010
|
Sun Sep 27 23:21:14 2009 |
rana | Update | PSL | SLOWscan result |
|
|
|
2011
|
Mon Sep 28 02:24:05 2009 |
rana | Update | Locking | MC1/3 Dewhitening found OFF: Turned back ON | While trying to make the OAF work, I found
that the XYCOM switches for MC1/3 have been
set in the bad way for awhile. This means |
|
|
2021
|
Tue Sep 29 21:37:09 2009 |
rana | Update | MZ | MZ work done : some noise checking | Since we used to run with a gain slider
setting of +15 dB on the MZ, I wanted to
check that the new setting of +30dB was OK. |
|
|
2025
|
Tue Sep 29 23:43:49 2009 |
rana | AoG | all down cond. | Cosmic | |
|
|
2041
|
Fri Oct 2 14:52:55 2009 |
rana | Update | Computers | c1susvme2 timing problems update | The attached shows the 200 day '10-minute'
trend of the CPU meters and also the room
temperature. |
|
|
2061
|
Wed Oct 7 03:49:49 2009 |
rana | Update | Adaptive Filtering | Attempts to take a TF of the OAF system | Here's a plot of the spectra of the
seismometers and MCL. The coherence shows
which axes are aligned right now: MC1_X is |
|
|
2062
|
Wed Oct 7 06:26:09 2009 |
rana | HowTo | IOO | MC_L calibration + some DTT lore | I drove MC2 in POS and used the
resulting response in MC_F to calibrate the
IOO-MC_L channel. |
|
|
2063
|
Wed Oct 7 07:42:55 2009 |
rana | Update | Adaptive Filtering | Attempts to take a TF of the OAF system | I remeasured
the OAF time delay using the OAF-TF template |
|
|
2066
|
Wed Oct 7 20:32:21 2009 |
rana | Update | Adaptive Filtering | extra delay and noise in PEM -> ASS/OAF system | [Rana, Jenne]
There is some craziness going on
with the delay in the PEM path for the OAF. |
|
|
2072
|
Thu Oct 8 22:17:15 2009 |
rana | Configuration | DMF | input channels changed | I changed the input channels of the DMF
recently so that it now uses 3 Guralp channels
in addition to the 3 ACC and 1 Ranger. |
|
|
2073
|
Fri Oct 9 01:31:56 2009 |
rana | Configuration | DAQ | tpchn mystery | Does anyone know if this master
file is the real thing that's in use now? |
|
|
2079
|
Sun Oct 11 04:12:44 2009 |
rana | Update | PEM | Accelerometers relocated | Some of these channels are not like the
others. |
|
|
2088
|
Mon Oct 12 22:15:15 2009 |
rana | Configuration | PSL | Stray beam blocking | You can remove the RFAM measuring setup.
Once we upgrade, we will no longer have a
MZ or the related problems. |
|
|
2093
|
Wed Oct 14 23:02:41 2009 |
rana | Update | Locking | daytime locking | This is huge. |
|
|
2094
|
Thu Oct 15 01:21:31 2009 |
rana | Summary | COC | Thermal Lensing in the ITM | Thermal lensing formula:
|
|
|
2096
|
Thu Oct 15 02:41:04 2009 |
rana | Update | COC | Choice of folding mirrors in the RC cavities | In addition to the main mirrors (PRM, SRM)
we will also have fold mirrors (called PR1,
PR2, SR1, SR2). I am curious to see if we |
|
|
2100
|
Thu Oct 15 17:12:00 2009 |
rana | Summary | Locking | never had it so good |
|
|
|
2107
|
Fri Oct 16 18:46:36 2009 |
rana | Configuration | ASC | loop opened on PZT2 YAW at 3:40 pm |
|
|