| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2026
|
Wed Sep 30 01:04:56 2009 |
rob | Update | Computers | grief | much grief. somehow a burt restore
of c1iscepics failed to work, and so the
LSC XYCOM settings were not correct. |
|
|
7248
|
Wed Aug 22 11:41:20 2012 |
steve | Update | General | grout plate for optical table at the ends | Reinforced concrete grout plate for existing
carbon steel stands at the ends.
|
|
|
3448
|
Fri Aug 20 15:49:14 2010 |
steve | Update | PEM | grouting is done | The preparation for pouring concrete is
continuing. The grout forms were removed.
Half inch ribbed steel bars were epoxied |
|
|
3444
|
Thu Aug 19 16:03:59 2010 |
steve | Update | PEM | grouting of PSL tripod legs | The 10' x 6' optical table is seating on
6 tripods. Each tripod leg has 3 feet. They
are supported by jack screws against copper |
|
|
7150
|
Fri Aug 10 21:37:15 2012 |
Den | Update | PEM | gur, sts noise | Using Guralp, STS-2 and Trillium
I compared Gur and STS-2 self-noise assuming
that Trillium noise is not worse then STS-2 |
|
|
6536
|
Mon Apr 16 09:10:37 2012 |
Den | Update | PEM | gur2_x | Already not for the first time I notice
that GUR2 readjusts its X zero position
|
|
|
6537
|
Mon Apr 16 09:44:54 2012 |
Jenne | Update | PEM | gur2_x |
|
|
|
6538
|
Mon Apr 16 14:37:01 2012 |
Den | Update | PEM | gur2_x |
|
|
|
6721
|
Wed May 30 22:51:32 2012 |
Den | Update | PEM | guralp isolation box | When I've put Guralps inside the isolation
box, the signal from seismometers increased
and was out of AA board range. I've reduced |
|
|
6696
|
Tue May 29 00:35:57 2012 |
Den | Update | PEM | guralp readout box | I measured the frequency response of the
Guralp readout box and noise by providing
sin signal of amplitude 50 mV at 15 Hz for |
|
|
6618
|
Mon May 7 21:46:10 2012 |
Den | Update | CDS | guralp signal error | GUR1_XYZ_IN1 and GUR2_XYZ_IN1 are the same
and equal to GUR2_XYZ. |
|
|
6757
|
Tue Jun 5 21:09:40 2012 |
yuta | Update | Computer Scripts / Programs | hacked ezca tools | Currently, ezca tools are flakey and fails
too much.
So, I hacked ezca tools just like |
|
|
6768
|
Wed Jun 6 18:04:22 2012 |
Jamie | Update | Computer Scripts / Programs | hacked ezca tools |
|
|
|
6769
|
Wed Jun 6 18:22:52 2012 |
Jamie | Update | Computer Scripts / Programs | hacked ezca tools |
|
|
|
8068
|
Tue Feb 12 18:25:43 2013 |
Jamie | Summary | General | half PRC with astigmatic PR2/3 |
|
|
|
1165
|
Mon Dec 1 15:09:27 2008 |
rob | Update | PEM | half-micron particle count is alarming | |
|
|
1168
|
Tue Dec 2 19:51:32 2008 |
rana | Update | PEM | half-micron particle count is alarming | The 0.5 micron dust monitor count is now pretty
high (36000). I wandered around the lab to
see if there was anything
|
|
|
9970
|
Mon May 19 09:19:44 2014 |
Steve | Update | LSC | happy IFO | 15 hours |
|
|
10858
|
Tue Jan 6 10:04:39 2015 |
Steve | Update | IOO | happy IOO | |
|
|
11886
|
Wed Dec 16 10:56:22 2015 |
gautam | Update | CDS | hard reboot of FB | [ericq,gautam]
Forgot to submit this yesterday...
While we were trying to get the |
|
|
1622
|
Fri May 22 17:05:24 2009 |
rob, pete | Update | Computers | hard reboot of vertex suspension controllers | we did a hard reboot of c1susvme1, c1susvme2,
c1sosvme, and c1susaux. We are hoping
this will fix some of the weird suspension |
|
|
88
|
Fri Nov 9 09:37:55 2007 |
steve | Update | PSL | head temp hiccup | Just an other PSL-126MOPA_HTEMP hiccup.
The water chiller is at 20.00C |
|
|
1116
|
Thu Nov 6 09:45:27 2008 |
steve | Update | MOPA | head temp hick-up vs power | The control room AC temp was lowered from
74F to 70F around Oct 10
This hold the head temp rock solid 18.45C |
|
|
911
|
Tue Sep 2 10:09:03 2008 |
steve | Update | PSL | head temp is cooling down | The chiller was over flowing this morning.
800 cc of water was removed.
PSL-126MOPA_HTEMP peaked at 20.7 C (normal |
|
|
13269
|
Tue Aug 29 15:41:17 2017 |
Kira | Summary | PEM | heater circuit | I worked with Kevin and Gautam to create
a heater circuit. The first attachment is
Kevin's schematic of the circuit. The |
|
|
13292
|
Tue Sep 5 09:47:34 2017 |
Kira | Summary | PEM | heater circuit calculations | I decided to calculate the fluctuation
in power that we will have in the heater
circuit. The resistors we ordered have 50 |
|
|
6116
|
Wed Dec 14 12:18:11 2011 |
Zach | Update | RF System | heater reengaged | I
reengaged the heater this morning, to compare |
|
|
14105
|
Thu Jul 26 01:52:01 2018 |
terra | Update | Thermal Compensation | heater work update | Just a quick update: over the past few
days we've taken (at least) 5 scans around
each peak [carrier - HOM3] at 9.4V/0.8A, |
|
|
9499
|
Fri Dec 20 01:24:11 2013 |
Den | Update | LSC | high bandwidth loop achieved for yarm | Koji, Den
CM Servo with |
|
|
9501
|
Fri Dec 20 03:34:40 2013 |
Koji | Update | LSC | high bandwidth loop achieved for yarm | This
too huge offset difference with/without "BOOST"
switch should be checked. |
|
|
9507
|
Fri Dec 20 22:45:02 2013 |
Koji | Update | LSC | high bandwidth loop achieved for yarm | I checked the offset situation in the CM
servo boost circuit.
- The offset voltage on the CM servo |
|
|
7645
|
Wed Oct 31 14:31:34 2012 |
Steve | Update | PEM | high particle count | High particle count confirmed with #2 counter |
|
|
7680
|
Wed Nov 7 11:43:29 2012 |
Steve | Update | PEM | high particle count ALART | The BS camber is open only. We should close
ASAP
Outside air quality is 1.7- 2.2 |
|
|
8001
|
Tue Feb 5 10:18:54 2013 |
Steve | Update | PEM | high particle count ALART |
|
|
|
7681
|
Wed Nov 7 14:59:35 2012 |
Steve | Update | PEM | high particle count ALART & oplevs |
|
|
|
2370
|
Wed Dec 9 09:07:32 2009 |
steve | Update | PEM | high seismic activity | The construction activity is shaking the
tables in the control room. The compactor-
large remote controlled jackhammer is in |
|
|
4405
|
Fri Mar 11 16:30:42 2011 |
steve | Update | General | high speed servo unit is here | New
Focus Servo Controller has just arrived.
We have 25 days to evaluate this product. |
|
|
12888
|
Tue Mar 14 15:05:18 2017 |
Steve | Update | Optical Levers | history of ETMX oplev laser |
|
|
|
2151
|
Tue Oct 27 18:01:49 2009 |
rob | Update | PSL | hmmm | A 30-day trend of the PCDRIVE from the
FSS. |
|
|
1004
|
Mon Sep 29 11:17:14 2008 |
steve | Update | SAFETY | horizontal viewports are protected with lexan | The four horizontal viewports of arms are
protected
by 3/8" thick, 8.5" OD Lexan disk of MR10 |
|
|
12616
|
Tue Nov 15 19:22:17 2016 |
gautam | Update | General | housekeeping | PRM and SRM sat. boxes have been switched
for some time now - but the PRM sat. box
has one channel with a different |
|
|
6306
|
Wed Feb 22 19:45:33 2012 |
kiwamu | Update | LSC | how much length offset do we need ? | I
did a quick calculation to see if the offset
of the arm length which I tried last night |
|
|
4356
|
Fri Feb 25 10:11:56 2011 |
steve | Update | SAFETY | how not to | The beam of IR for doubling is clipping
on bnc cable to green beam transmitted pd. |
|
|
4953
|
Thu Jul 7 13:57:28 2011 |
steve | HowTo | SAFETY | how not to | I found baked allen keys on the top of
the clean optics cabinet. Somewhat
heavy box that can come down in an earthquake |
|
|
9027
|
Mon Aug 19 10:03:17 2013 |
Steve | HowTo | General | how not to leave a cable | We can not leave cables connected like
this. This is a burned toast award. |
|
|
7864
|
Thu Dec 20 17:13:56 2012 |
Jamie | Update | General | how to deal with problem with in-vac wiring for TTs | So this is obviously a general problem
for all the TTs. Our in-vacuum wiring
is unfortunately mirrored relative to that |
|
|
6876
|
Wed Jun 27 03:43:52 2012 |
yuta | Summary | IOO | how to improve mode matching to arms | From the mode scan measurements of the
arms(elog #6859),
~6% of mode-mismatch comes from 2nd-order |
|
|
6877
|
Wed Jun 27 10:27:09 2012 |
rana | Summary | IOO | how to improve mode matching to arms | The MC waist is correct as is the arm RoCs.
Most likely the error is in the telescope
length or its distance from the MC. Jenne |
|
|
2164
|
Fri Oct 30 09:24:45 2009 |
steve | HowTo | MOPA | how to squeeze more out of little |
|
|
|
4960
|
Mon Jul 11 14:03:37 2011 |
steve | HowTo | lore | how to visit your old lab | Alberto is visiting us from Australia.
He brought some terrific presents. It is
going to be very demanding task to wait for |
|