| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2099
|
Thu Oct 15 12:57:23 2009 |
Zach | Update | PSL | inventory |
|
|
|
2102
|
Fri Oct 16 10:15:02 2009 |
steve | Update | IOO | IP ang & pos recentered | Pointing stability of 4 days. Initial pointing
does not go through suspended optics. It
is launched right after the Piezo Jena |
|
|
2106
|
Fri Oct 16 16:44:39 2009 |
Alberto, Sanjit | Update | Computers | elog restarted | This afternoon the elog crashed. We just
restarted it. |
|
|
2111
|
Sun Oct 18 22:05:40 2009 |
kiwamu | Update | LSC | LSC timing issue | Today
I made a measurement to research the LSC
timitng issue as mentioned on |
|
|
2113
|
Sun Oct 18 23:02:03 2009 |
Koji | Update | LSC | LSC timing issue | You yourself told me that tdsdata uses
some downconversion from 32k to 16k!
So, how does the downconversion appears |
|
|
2114
|
Mon Oct 19 10:00:52 2009 |
kiwamu | Update | LSC | RE: LSC timing issue | Of course I know there is a downconversion
in OMC signal from 32k to 16k.
But I was just wondering if the delay |
|
|
2116
|
Mon Oct 19 11:31:55 2009 |
Jenne | Update | Adaptive Filtering | extra delay and noise in PEM -> ASS/OAF system |
|
|
|
2117
|
Mon Oct 19 13:00:53 2009 |
Mott | Update | General | Phase Noise Measurement | Here is the result for the measurement
of the phase noise. We used the marconi
function generator and compared it with an |
|
|
2119
|
Mon Oct 19 17:12:54 2009 |
jenne | Update | PEM | accelerometers and seismomters are all good. |
|
|
|
2120
|
Mon Oct 19 18:14:28 2009 |
rob | Update | Cameras | video switch broken | The Chameleon HB (by Knox) video switch
that we use for routing video signals into
the control room monitors is broken. |
|
|
2121
|
Mon Oct 19 19:37:39 2009 |
Sanjit, Jenne | Update | Adaptive Filtering | extra delay and noise in PEM -> ASS/OAF system | Rana pointed out that the delay may be
caused by the 110B DAQ, as it integrates
over 2ms (5 clock cycles at 2048Hz on the |
|
|
2122
|
Mon Oct 19 23:14:32 2009 |
kiwamu | Update | LSC | LSC timing issue | I measured
the noise spectrum of LSC_DARM_IN1 and OMC-LSC_DRIVE_EXC
by using DTT, |
|
|
2123
|
Tue Oct 20 02:14:29 2009 |
rob | Update | IOO | MC2 alignment bias changed | the mode cleaner was having trouble locking
in a 00 mode, needing several tries.
I changed the MC2 coil biases, and it seems |
|
|
2124
|
Tue Oct 20 10:46:18 2009 |
steve | Update | IOO | clipping IP-ANG beam at ETMX chamber | Initial pointing beam is clearly clipping
on 2" pick off mirror in ETMX
vacuum chamber. |
|
|
2125
|
Tue Oct 20 11:38:10 2009 |
rana, rolf | Update | Adaptive Filtering | extra delay and noise in PEM -> ASS/OAF system | An email from Rolf about the delay in
the 110Bs:
|
|
|
2127
|
Wed Oct 21 11:41:29 2009 |
Zach | Update | WIKI-40M Update | PSL Table Diagram wiki entry | I made a wiki entry for the PSL table
diagram under the PSL directory on the 40mHomePage.
I tried to use the ImageLink macro to use |
|
|
2128
|
Wed Oct 21 13:07:54 2009 |
Koji | Update | WIKI-40M Update | PSL Table Diagram wiki entry | http://lhocds.ligo-wa.caltech.edu:8000/40m/PSL_Table_Diagram
Thanks. I love this. Could you also
put the original file that is editable for |
|
|
2129
|
Wed Oct 21 15:07:45 2009 |
Alberto | Update | WIKI-40M Update | Photodiodes' configuration for the Upgrade | I uploaded on the Wiki (here)
the results of an inventory over our current
PDs, a list of the new ones that we're going |
|
|
2131
|
Wed Oct 21 17:12:30 2009 |
Alberto | Update | elog | Browser context menu enabled on the Elog under HTM editing mode | On behalf of Steve and of the rest of the
not-native-English community at the 40m willing
to have their browser's spell checker working |
|
|
2132
|
Thu Oct 22 08:45:58 2009 |
steve | Update | IOO | IP ang & pos recentered |
|
|
|
2133
|
Thu Oct 22 15:44:16 2009 |
Zach | Update | WIKI-40M Update | MOPA diagram | I have updated the PSL Diagram wiki
page to include MOPA. As with the PSL diagram,
clicking the photo on the main page takes |
|
|
2134
|
Thu Oct 22 15:49:29 2009 |
Zach | Update | WIKI-40M Update | PSL Table Diagram wiki entry |
|
|
|
2135
|
Thu Oct 22 21:58:26 2009 |
Koji | Update | WIKI-40M Update | PSL Table Diagram wiki entry | Diagram. I don't want to say PNG is an
editable format for this purpose...
You have the PPT, PDF or any drawing |
|
|
2136
|
Thu Oct 22 23:14:54 2009 |
Zach | Update | WIKI-40M Update | PSL Table Diagram wiki entry |
|
|
|
2138
|
Fri Oct 23 15:02:00 2009 |
rob | Update | lore | marconi phase | So, it appears that one doesn't even have
to change the Marconi set frequency to alter
the phase of the output signal. It |
|
|
2139
|
Sat Oct 24 04:57:33 2009 |
rana | Update | lore | marconi phase |
|
|
|
2141
|
Mon Oct 26 03:57:06 2009 |
rob | Update | Locking | bad | Lock acquisition has gone bad tonight.
The initial stage works fine, up
through handing off control of CARM to MCL. |
|
|
2142
|
Mon Oct 26 15:40:01 2009 |
steve | Update | PSL | laser power is down | The laser power is down 5-6% |
|
|
2143
|
Mon Oct 26 17:45:34 2009 |
Jenne | Update | Adaptive Filtering | New changes to the OAF fe code | [Alex, Jenne, Sanjit]
Alex came to the 40m today, and did
several awesome things in OAF-land. |
|
|
2144
|
Mon Oct 26 18:15:57 2009 |
rob | Update | IOO | MC OLG | I measured the mode cleaner open loop gain.
It's around 60kHz with 29 degs of phase margin. |
|
|
2145
|
Mon Oct 26 18:49:18 2009 |
kiwamu | Update | LSC | OMC-LSC timing issue | According to my measurements I
conclude that LSC-signal is retarded from |
|
|
2146
|
Mon Oct 26 19:12:50 2009 |
kiwamu | Update | LSC | diagnostic script for LSC timing | The diagnostic script I've written is available
in the 'caltech/users/kiwamu/work/20091026_OMC-LSC-diag/src'.
To run the script, you can just execute |
|
|
2147
|
Mon Oct 26 23:14:08 2009 |
Koji | Update | PSL | laser power is down | I adjusted the steerings to the PMC and
gained 7%. Now the MC_TRANS 7.0 has been
recovered. |
|
|
2148
|
Tue Oct 27 01:45:02 2009 |
rob | Update | Locking | MZ | [quote] Tonight we also encountered a large
peak in the frequency noise around 485 Hz.
Changing the MZ lock point (the spot in |
|
|
2149
|
Tue Oct 27 15:55:04 2009 |
Koji | Update | General | ISS injection work / HEPA is on | I was working on the ISS excitation to
take TFs.
I used ISS IL excitation, stealing |
|
|
2151
|
Tue Oct 27 18:01:49 2009 |
rob | Update | PSL | hmmm | A 30-day trend of the PCDRIVE from the
FSS. |
|
|
2152
|
Tue Oct 27 18:19:14 2009 |
rob | Update | Locking | bad |
|
|
|
2153
|
Tue Oct 27 19:37:03 2009 |
kiwamu | Update | LSC | cron job to diagnose LSC-timing | I set a cron job on allegra.martian to
run the
diagnostic script every weekend. |
|
|
2154
|
Wed Oct 28 05:02:28 2009 |
rob | Update | Locking | back | LockAcq is back on track, with the full
script working well. Measurements in
progress. |
|
|
2155
|
Wed Oct 28 09:12:18 2009 |
steve | Update | PSL | PMC power on the rise? | The PMC power is seems to be on the rise,
( MOPA_AMPMON is dropping ?) but I do not
think it is real. We have Santa Anna wind |
|
|
2156
|
Wed Oct 28 14:39:10 2009 |
steve | Update | PEM | after the tour of the 40m | Illuminators and PSL lights turned off.
HEPA filter speed increased from 20 to 100% |
|
|
2158
|
Thu Oct 29 13:48:32 2009 |
Koji | Update | PSL | NPRO LTMP lowered 9.5deg | 13:00 Found MC TRANS less than 7.
13:50 Go into the PSL table.
14:20 Work done. Now I am running |
|
|
2159
|
Thu Oct 29 18:04:02 2009 |
Jenne | Update | Adaptive Filtering | More work on saving coeffs on the OAF screen | [Sanjit,Jenne]
Sanjit has been working today on
trying to get the OAF coefficients to save |
|
|
2160
|
Thu Oct 29 18:25:33 2009 |
Sanjit | Update | Adaptive Filtering | More work on saving coeffs on the OAF screen |
|
|
|
2161
|
Thu Oct 29 20:21:14 2009 |
Koji | Update | PSL | NPRO LTMP lowered 9.5deg | Here is the plots for the powers. MC TRANS
is still rising.
What I noticed was that C1:PSL-FSS_PCDRIVE |
|
|
2162
|
Thu Oct 29 21:51:07 2009 |
rob | Update | Locking | bad |
|
|
|
2163
|
Fri Oct 30 04:41:37 2009 |
rob | Update | Locking | working again | I never actually figured out exactly what
was wrong in entry 2162,
but I managed to circumvent by changing the |
|
|
2165
|
Fri Oct 30 10:52:56 2009 |
Jenne | Update | PSL | HEPAs | Zach found the HEPA switch on the PSL table
OFF. He turned them on. |
|
|
2166
|
Sun Nov 1 17:58:44 2009 |
Jenne | Update | General | Update on Video Switch | The current update on the Chameleon video
switch is: no progress.
I connected the old laptop that Rob/Steve |
|
|
2167
|
Mon Nov 2 10:56:09 2009 |
kiwamu | Update | LSC | cron job works succesfully & no timing jitter | As
I wrote on Oct.27th, the cron job works
every Sunday. |
|