| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
533
|
Thu Jun 12 15:55:15 2008 |
rob | Update | Locking | report | [quote]Rob: Awesome figure. As you can imagine,
I have lots of questions, and hope that you
will consider this figure to be the beginning, |
|
|
534
|
Fri Jun 13 11:17:25 2008 |
Yoichi | Update | PSL | PMC transmittance at high power | We received a new cable for the Scientech
calorimeter. So I measured the transmittance
of the PMC at higher power.
|
|
|
535
|
Mon Jun 16 18:26:01 2008 |
Max Jones | Update | Computer Scripts / Programs | Noise Budget Changes | In the directory cvs/cds/caltech/NB the following
changes were made:
|
|
|
537
|
Wed Jun 18 00:19:29 2008 |
rob | Update | PSL | MOPA trend | 15 day trend of MOPA channels. The NPRO temperature
fluctations are real, and causing the PMC
to consistently run up against its rails. |
|
|
539
|
Wed Jun 18 16:37:54 2008 |
steve,rana | Update | SAFETY | CO2 test in the east arm | The CO2 laser and table are in the east arm
for characterization of the mechanics. We
will not be operating it until we have an |
|
|
540
|
Wed Jun 18 18:20:10 2008 |
Yoichi | Update | PSL | Investigation on the NPRO temperature stabilization glitches | As Rob pointed out in http://dziban.ligo.caltech.edu:40/40m/537
the MOPA NPRO has been showing some glitchiness
in the LTEC loop.
|
|
|
541
|
Wed Jun 18 18:26:19 2008 |
Yoichi | Update | PSL | Finding the optimal operation temperature for the NPRO by the slow act scan | Being suspicious of the temperature stabilization
of the NPRO crystal, I ran the slow scan
script written by Rana to find the suitable |
|
|
542
|
Wed Jun 18 18:32:09 2008 |
Max Jones | Update | Computer Scripts / Programs | NB Update | I am reconfiguring the the noisebudget code
currently in use at the sights. To that end,
I have done the following things (in addition |
|
|
544
|
Wed Jun 18 18:50:09 2008 |
rana | Update | Computers | It can only be attributable to human error. (HAL - 2001) | [B]There has been another one of "those" events
and all of the front end machines are down.[/B]
|
|
|
546
|
Thu Jun 19 20:22:03 2008 |
rana | Update | General | FE Computer Status | I called Rolf (@LLO) who called Alex (@MIT)
who suggested that we power cycle every crate
|
|
|
547
|
Fri Jun 20 01:38:55 2008 |
rana | Update | PEM | 20 day Weather | Yoichi showed me that its possible to make
PNG images from PS using GS:
|
|
|
548
|
Fri Jun 20 02:20:33 2008 |
Yoichi | Update | | PMC transmittance degradation | The PMC transmitted light power has been degrading
constantly for last two weeks (see the attachment
1).
|
|
|
549
|
Fri Jun 20 08:30:27 2008 |
stiv | Update | Photos | 40m summer line up 2008 | atm1: John, Alberto, Yoichi, Koji, Masha,
and Sharon
|
|
|
550
|
Fri Jun 20 17:42:48 2008 |
steve | Update | PSL | SS trap scattering compared to black glass trap | Circular SS304 trap was compared to wedged
black glass trap.
|
|
|
553
|
Mon Jun 23 19:33:01 2008 |
rana, jenne | Update | IOO | MC_F Noise check | We looked at the MC_F spectrum because Rob
and Yoichi said that it had gone 'all crazy'.
It
|
|
|
555
|
Mon Jun 23 21:51:19 2008 |
Alberto | Update | General | Arm Cavity Length Measurement | We measured the arm cavity lengths sweeping
the ETM mirror position and looking at the
reflected demodulated output. We excited |
|
|
556
|
Tue Jun 24 10:24:43 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Cavity Swing Measurement (2) | At the entry 555, Alberto reported the results
of the cavity length measurement using cavity
sweeping.
|
|
|
559
|
Tue Jun 24 22:31:10 2008 |
Masha | Update | Auxiliary locking | my first step in fiber stabilization | There is a new 1W INNOLIGHT NPRO laser at
the Symmetric Port.
|
|
|
563
|
Wed Jun 25 09:46:45 2008 |
Sharon | Update | | Adaptive Filters | I have been learning about different methods
for applying adaptive filters to improve
the Mode Cleaner lock in specific, and other |
|
|
564
|
Wed Jun 25 11:01:45 2008 |
Masha | Update | Auxiliary locking | fiber stabilization | For the first week, I have been learning about
fiber noise cancellation, auxiliary locking
techniques, and other relevant helpful topics |
|
|
565
|
Wed Jun 25 11:36:14 2008 |
Max Jones | Update | Computer Scripts / Programs | First Week Update | For the first week I have been modifying the
noise budget script in caltech/NB to run
with 40 m parameters and data. As per Rana's |
|
|
567
|
Wed Jun 25 13:38:22 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Placement of the 700mW NPRO on the AP table | This morning I have put the 700mW NPRO on
the AP table for the abs length measurement.
|
|
|
571
|
Thu Jun 26 01:10:18 2008 |
rana | Update | PEM | Alarm Handler indicates that dust level is high | [I]In its first useful act[/I], the Alarm
Handler started beeping indicating that the
[COLOR=purple]dust particle
|
|
|
572
|
Thu Jun 26 10:56:15 2008 |
Max Jones | Update | PEM | Removed Magnetometer | I removed the Bartington Magnetometer on the
x arm to one of the outside benches. I'll
be trying to determine if and how it works |
|
|
574
|
Thu Jun 26 14:06:00 2008 |
Masha | Update | General | 500mW INNOLIGHT NPRO info | Below is the placement of 500mW INNOLIGHT
NPRO mephisto laser. It is set up on the
Symmetric Port table. [IMG]elog:574/1[/IMG] |
|
|
575
|
Thu Jun 26 18:24:28 2008 |
Yoichi | Update | PSL | FSS input ofset slider problem - fixed | I checked the FSS servo interface board and
found that a LT1125CSW used to differentialize
offset channel was broken (no virtual short).
|
|
|
576
|
Thu Jun 26 18:27:04 2008 |
rana | Update | Computer Scripts / Programs | No Dataviewer No Cry | Dataviewer was hanging. It would open the
Grace window but then not plot anything.
Since DTT was working
|
|
|
577
|
Thu Jun 26 18:29:44 2008 |
Jenne | Update | | MC Back online | Jenne, Rob, Yoichi
I was playing with the Mode Cleaner earlier |
|
|
578
|
Thu Jun 26 20:59:22 2008 |
rana | Update | Computer Scripts / Programs | Alarm Handler | [COLOR=red][SIZE=5][B]Please do not turn off
the Alarm Handler on op540m.[/B][/SIZE][/COLOR] |
|
|
580
|
Thu Jun 26 22:08:33 2008 |
Jenne | Update | Electronics | 3.7MHz bandstop filter in MC Servo | The 3.7MHz elliptical bandstop filter that
I made during my SURF summer is now installed
in the MC servo loop to reduce the noise |
|
|
584
|
Fri Jun 27 18:03:46 2008 |
Jenne | Update | Electronics | Another bad cable in the MC servo | Eric was helping me to measure the response
of the LO input on the MC's Demod board,
and when we disconnected the end of the cable |
|
|
585
|
Fri Jun 27 18:21:01 2008 |
Jenne | Update | Electronics | Response of the LO input on the MC demod board | The alarm handler has been flipping out saying
that the LO input of the MC's demod board
is too low, so at Rana's suggestion, Eric |
|
|
586
|
Fri Jun 27 19:59:44 2008 |
John | Update | Computers | c1iovme | C1susvme2 and C1iovme crashed which sent the
optics swinging and tripped the watchdogs.
|
|
|
587
|
Sat Jun 28 03:10:25 2008 |
rob | Update | Computers | c1iovme | [quote]C1susvme2 and C1iovme crashed which
sent the optics swinging and tripped the
watchdogs.
|
|
|
588
|
Sat Jun 28 14:56:44 2008 |
John | Update | Computers | ini files | In short, I was editing the ini files yesterday
evening, I didn't e-log it and after some
investigation this afternoon it apears
|
|
|
589
|
Sat Jun 28 23:23:50 2008 |
John | Update | Computers | Rebooting | All of the computers are now showing green
lights.
|
|
|
590
|
Sun Jun 29 02:33:28 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Optical setup (I) | I have constructed the beam injection optics
for the abs length measurement.
|
|
|
592
|
Sun Jun 29 14:53:02 2008 |
rob | Update | Computers | Rebooting | [quote]All of the computers are now showing
green lights.
|
|
|
597
|
Sun Jun 29 20:29:48 2008 |
rana | Update | PSL | Correlation of PSL SLOW control v. Room temperature | |
|
|
598
|
Mon Jun 30 01:49:06 2008 |
John | Update | IOO | MC work | I'm in the process of aligning the mode cleaner/
input beam.
|
|
|
599
|
Mon Jun 30 05:33:38 2008 |
Koji | Update | General | Abs. Len. Meas. ~ Optical setup (II) | o The position of the iris was adjusted so
as not to disturub the beam for OMCR CCD.
|
|
|
600
|
Mon Jun 30 08:59:23 2008 |
steve | Update | IOO | IOO-MC_DEMOD_LO is low | The alarm handler is beeping relentlessly:
asking for help in high partical count and
low demod signal |
|
|
601
|
Mon Jun 30 09:46:15 2008 |
John | Update | IOO | MC WFS | MC WFS are on. They seem to do some good during
the day. |
|
|
605
|
Mon Jun 30 15:56:22 2008 |
Jenne | Update | Electronics | Fixing the LO demod signal | To make the alarm handler happy, at Rana and
John's suggestion I replaced R14 of the MC's
Demod board, changing it from 4.99 Ohms to |
|
|
607
|
Mon Jun 30 18:36:01 2008 |
Yoichi | Update | PSL | MZ alignment again | John, Yoichi
We re-adjusted the MZ alignment. The reason |
|
|
608
|
Tue Jul 1 09:26:33 2008 |
steve | Update | Computers | RFM network is down | |
|
|
609
|
Tue Jul 1 10:15:22 2008 |
steve | Update | PSL | eventfull two days | The laser recovered from a short temp rise.
The MZ was aligned and realigned. The suspentions
were kicked up accidentally.
|
|
|
610
|
Tue Jul 1 11:53:38 2008 |
Yoichi | Update | Computers | RFM network back | I took a tour of the FE machines and power
cycled all of them.
After executing the software restart procedures |
|
|
614
|
Tue Jul 1 13:34:29 2008 |
rob | Update | Computers | RFM network back | [quote]
For some reason, the computers requiring
startup.cmd (like c1lsc) halt after running |
|
|
618
|
Tue Jul 1 21:45:48 2008 |
John | Update | PSL | Mach Zehnder script and screen | I've edited C1: PSL_MACH_ZEHNDER.adl and /cvs/cds/caltech/scripts/PSL/MZ/lockMZ
to reflect the changes described in entry
#616. |
|