| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
12888
|
Tue Mar 14 15:05:18 2017 |
Steve | Update | Optical Levers | history of ETMX oplev laser |
|
|
|
12889
|
Thu Mar 16 08:22:16 2017 |
Steve | Update | SUS | ETMX damping | Finally I see what kicks the sus damping
off
|
|
|
12890
|
Fri Mar 17 10:47:16 2017 |
Steve | Update | Optical Levers | ETMX oplev laser replaced | JDSU 1103P. sn T8070866, made March 2007,
output power 2.7 mW, on pd 17,750 counts,
GV |
|
|
12891
|
Fri Mar 17 14:49:09 2017 |
gautam | Update | LSC | MCREFL condition pictures | I did a quick measurement of the beam size
on the MC REFL PD today morning. I disabled
the MC autolocker while this measurement |
|
|
12893
|
Mon Mar 20 11:18:58 2017 |
gautam | Update | CDS | No internet connectivity on control room machines | There
is no internet connectivity on any of the |
|
|
12894
|
Mon Mar 20 14:39:44 2017 |
gautam | Update | CDS | No internet connectivity on control room machines | Koji
diagnosed that the NAT router was to blame |
|
|
12895
|
Mon Mar 20 17:12:08 2017 |
steve | Update | PEM | particle counter inside of PSL enclousure | The logging script is multiplying by 100
instead of 10 !
|
|
|
12896
|
Tue Mar 21 15:13:44 2017 |
gautam | Update | IMC | IMC input beam mode matching | [valera, gautam]
Last night, Valera and I looked
into two aspects of the IMC: |
|
|
12897
|
Tue Mar 21 21:21:58 2017 |
gautam | Update | IOO | WFS filter banks updated | The arrangement of filters in the WFS loop
filter banks have been altered, Rana will
update with details of the motivation behind |
|
|
12898
|
Tue Mar 21 21:59:48 2017 |
gautam | Update | IMC | IMC input beam mode matching | [valera, gautam]
We implemented the plan outlined
in the previous elog. The visibility (Pmax-Pmin)/(Pmax+Pmin) calculated |
|
|
12899
|
Wed Mar 22 00:33:00 2017 |
gautam | Update | IMC | IMC length offset nulling | [valera, gautam]
Motivation: see this
elog |
|
|
12900
|
Wed Mar 22 16:58:25 2017 |
gautam | Update | IMC | WFS sensing matrix measurements | I've taken a bunch of transfer function
measurements from the MC ASC PIT and YAW
channels to the WFS error signals using the |
|
|
12901
|
Thu Mar 23 01:44:53 2017 |
gautam | Update | IMC | WFS sensing matrix measurements | Thanks to Koji's nice MATLAB script
using DttData functions, I was able to quickly
analyze the TF data. Essentially, this measurement |
|
|
12902
|
Thu Mar 23 08:43:11 2017 |
rana | Update | IMC | WFS sensing matrix measurements | For sensing matrix, better to use single
frequency sine response. We don't want
to measure around the bounce or above the |
|
|
12903
|
Thu Mar 23 23:38:58 2017 |
gautam | Update | IMC | MC SUS damping gains stepped down | I've reduced the gains of the damping
on all 3 MC SUS by a factor of 3 for overnight
observation as part of the ongoing feedforward |
|
|
12904
|
Fri Mar 24 11:26:57 2017 |
gautam | Update | IMC | MC SUS damping gains restored | I've restored the damping loop gains
to their nominal values. Analysis of the
coherence between MCL and seismometer channels |
|
|
12906
|
Fri Mar 24 19:04:18 2017 |
gautam | Update | IMC | Seismic feedforward and WFS | [valera, gautam]
On Wednesday at the meeting, we
were discussing why we aren't able to |
|
|
12908
|
Mon Mar 27 15:36:27 2017 |
Steve | Update | PEM | particle counter inside of PSL enclousure |
|
|
|
12909
|
Mon Mar 27 16:01:55 2017 |
Steve | Update | PEM | X arm AC set to 68F |
The X arm air conditioner was not
regulating properly. The arm temp was warmer |
|
|
12911
|
Mon Mar 27 20:41:21 2017 |
rana, gautam | Update | PSL | PMC DAQ assay for feed-forward integration | We are thinking to use the PMC signals
to help us in figuring out the feedback /
feedforward stuff and making it better. |
|
|
12913
|
Tue Mar 28 16:47:40 2017 |
Steve | Update | safety | Projector bulb is out again | Three replacement
bulbs ordered
Rana can discribe |
|
|
12915
|
Wed Mar 29 09:24:28 2017 |
Steve | Update | lore | summery pages | The summery pages are working at a slow
motion speed. It's response time 12 minutes. |
|
|
12916
|
Wed Mar 29 11:41:19 2017 |
gautam | Update | PSL | PMC DAQ assay for feed-forward integration | The C1IOO frontend machine that resides
in 1X1/1X2 has 2 ADCs, ADC0 and ADC1. The
latter has 28 out of 32 channels unused at |
|
|
12918
|
Thu Mar 30 00:16:09 2017 |
gautam | Update | PSL | PSL NPRO PZT calibration | As part of the ongoing effort to try and
calibrate the PMC DAQ channels into physical
units, I tried to get a calibration for the |
|
|
12920
|
Thu Mar 30 18:11:01 2017 |
rana | Update | PSL | PMC DAQ assay for feed-forward integration | What you have drawn looks good to me: the
cut should be between TP3 and pin3 of the
AD620. This should maintain the DC coupled |
|
|
12921
|
Fri Mar 31 10:16:07 2017 |
Steve | Update | safety | laser safety glasses annual inspection | Laser safety glasses cleaned in "
Dawn Ultra " mild soap - water solution
and measured for 1064 nm transmission at |
|
|
12922
|
Fri Mar 31 16:10:33 2017 |
Steve | Update | Treasure | Les Guthman | Les Guthman interviews gradstudent
Graig.
Main laser emergency shut off was |
|
|
12923
|
Sun Apr 2 23:14:30 2017 |
rana | Update | Computer Scripts / Programs | nodus update/upgrade/reboot | I just did remote apt-get update, apt-get
upgrade, and then reboot on nodus. ELOG started
up by itself. |
|
|
12924
|
Mon Apr 3 17:09:47 2017 |
gautam | Update | CDS | C1PSL burt-restored | When I came in this morning, Steve had
re-locked the PMC and IMC - but I could see
a ~1Hz intensity fluctuation on the PMC REFL video |
|
|
12925
|
Mon Apr 3 17:25:13 2017 |
gautam | Update | PSL | PSL NPRO PZT calibration | Summary:
By sweeping the laser frequency
and looking at the PMC PDH error signal, |
|
|
12926
|
Mon Apr 3 23:07:09 2017 |
gautam | Update | PSL | PMC DAQ assay for feed-forward integration | I made some changes to the DAQ path on
the PMC servo board, as per the plan posted
earlier in this thread. Summary of changes: |
|
|
12927
|
Tue Apr 4 11:24:21 2017 |
Steve | Update | safety | Projector bulb is out again | Shipped out for repair.
|
|
|
12928
|
Tue Apr 4 17:27:58 2017 |
rana | Update | PSL | PSL NPRO PZT calibration | good cal. I wonder if this data also gives
us a good measurement of the cavity pole
or if the photo-thermal self-locking effect |
|
|
12929
|
Wed Apr 5 16:05:47 2017 |
gautam | Update | General | NB code checkout | [evan, gautam]
We spent some time trying to get
the noise-budgeting code running today. I |
|
|
12930
|
Thu Apr 6 15:35:44 2017 |
Steve | Update | PEM | envioirmental noise | Building:
Central Engineering Services
|
|
|
12931
|
Fri Apr 7 13:46:23 2017 |
Steve | Update | SUS | ETMX enclosure feedthough | ETMX enclosure feedtrouh cabeling corrected. |
|
|
12932
|
Mon Apr 10 09:49:32 2017 |
Steve | Update | Optical Levers | oplev laser RIN test planning | We are planning to test 3 identical 1103Ps
RIN with continous temp monitoring
and control later. |
|
|
12934
|
Mon Apr 10 14:21:57 2017 |
rana | Update | Optical Levers | oplev laser RIN test planning | I'm suspicious of this temperature
sensor comparison. Usually, what they mean
by accuracy is not the same as what we mean. |
|
|
12936
|
Mon Apr 10 15:37:11 2017 |
gautam | Update | COC | RC folding mirrors - v3 of specs uploaded | Koji and I have been going over these calculations
again before we send a list of revised requirements
to Ramin. I've uploaded v3 of the specs |
8x |
|
12937
|
Mon Apr 10 16:00:26 2017 |
rebecca | Update | Cameras | Pylon installation warning | When trying to install an older version
of Pylon packaged for Debian that Joe B.
had sent, it gave the warning that the package |
|
|
12938
|
Mon Apr 10 18:42:09 2017 |
johannes | Update | Cameras | Pylon installation warning | It looks like we may not need to use this
old Pylon version after all. Gautam and I
looked into installing SnapPy with the makefile |
|
|
12939
|
Tue Apr 11 00:38:37 2017 |
gautam | Update | PSL | PMC demod moved off servo board | As discussed at the Wednesday meeting last
week, I tried moving the demodulation of
the PMC error signal off the PMC servo board, |
|
|
12940
|
Wed Apr 12 00:36:53 2017 |
gautam | Update | PSL | PMC demod moved off servo board | Here is a more detailed comparison of the
spectra of the signals at the front panel
DAQ LEMO output, measured with the Agilent |
|
|
12941
|
Thu Apr 13 09:48:37 2017 |
Steve | Update | SUS | ITMY-UL and ETMX sensors | Why ITMY UL can not see this earth quake?
SRM and PRM are misaligned. ETMX is still
not well. |
|
|
12942
|
Thu Apr 13 19:54:07 2017 |
rana | Update | DAQ | checkup on minute trends | Our minute trends are still not available
through NDS2 from the outside world due to
the bad config of the DAQ, but I can confirm |
|
|
12944
|
Tue Apr 18 01:01:03 2017 |
gautam | Update | PSL | PMC OLTF measured, DAQ channels calibrated | Quick entry, details to follow in the AM
tomorrow.
I calibrated the PMC DAQ |
|
|
12945
|
Tue Apr 18 16:10:00 2017 |
gautam | Update | PSL | PMC OLTF measured, DAQ channels calibrated | Here are the details:
PMC OLTF:
the
procedure used was identical to what Koji |
|
|
12946
|
Tue Apr 18 23:37:15 2017 |
rana | Update | PSL | PMC OLTF measured, DAQ channels calibrated | What's
the reasoning behind setting the the gain |
|
|
12947
|
Wed Apr 19 15:13:30 2017 |
gautam | Update | PSL | PMC/MCL multicoherence | I used a one hour stretch of data from
last night to look at coherence between the
PMC control signal and MCL, to see if the |
|
|
12948
|
Wed Apr 19 15:46:24 2017 |
gautam | Update | General | 1611/1811 inventory check | I looked through the lab area to do a fast
photodiode inventory check, as we may need
to buy some for the higher order mode spectroscopy |
|