| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
15928
|
Wed Mar 17 09:05:01 2021 |
Paco, Anchal | Configuration | Computers | 40m Control Room Changes |
Switched positions of allegra and
donatella.
While doing so, the
hdmi cable previously used by donatella snapped. |
|
|
15927
|
Wed Mar 17 00:05:26 2021 |
gautam | Update | LSC | Delay line BIO remote control | While Koji is working on the REFL 11 demod
board, I took the opportunity to investigate
the non-remote-controllability of the |
|
|
15926
|
Tue Mar 16 19:13:09 2021 |
Paco, Anchal | Update | SUS | First success in Input Matric Diagonalization | After jumping through few hoops, we have
one successful result in diagonalizing the
input matrix for MC1, MC2 and MC3. |
|
|
15925
|
Tue Mar 16 19:04:20 2021 |
gautam | Update | CDS | Front-end testing | Now that I think about it, I may only have
backed up the root file system of chiara,
and not |
|
|
15924
|
Tue Mar 16 16:27:22 2021 |
Jon | Update | CDS | Front-end testing | Some progress today towards setting up
an isolated subnet for testing the new front-ends.
I was able to recover the fb1 backup disk |
|
|
15923
|
Tue Mar 16 16:02:33 2021 |
Koji | Update | LSC | REFL11 demod retrofitting | I'm going to remove REFL11 demod for
the noise check/circuit improvement.
---- |
|
|
15922
|
Tue Mar 16 14:37:36 2021 |
Yehonathan | Update | BHD | SOS SmCo magnets Inspection | In the cleanroom, I opened the nickel-plated
SmCo magnet box to take a closer look. I
handled the magnets with tweezers. I wrapped |
|
|
15921
|
Mon Mar 15 20:40:01 2021 |
rana | Configuration | Computers | installed QTgrace on donatella for dataviewer | I installed QTgrace using yum on donatella. Both Grace and |
|
|
15920
|
Mon Mar 15 20:22:01 2021 |
gautam | Update | ASC | c1rfm model restarted | On Friday, I felt that the ASC performance
when the PRFPMI was locked was not as good
as it used to be, so I looked into the situation |
|
|
15919
|
Mon Mar 15 08:55:45 2021 |
Paco, Anchal | Summary | training | | [Paco, Anchal]
Found IMC locked upon arrival.
Since
"allegra" was set up as an additional |
|
|
15918
|
Fri Mar 12 21:15:19 2021 |
gautam | Update | LSC | coronaversary PRFPMi | Attachment
#1 - proof that the |
|
|
15917
|
Fri Mar 12 19:44:31 2021 |
gautam | Update | LSC | Delay line | I may want to use the delay line phase
shifter in 1Y2 to allow remote actuation
of the REFL11 demod phase (for the AO path, |
|
|
15916
|
Fri Mar 12 18:10:01 2021 |
Anchal | Summary | Computer Scripts / Programs | Installed cds-workstation on allegra | allegra had fresh Debian 10 installed on
it already. I installed cds-workstation packages
(with the help of Erik von Reis). I checked |
|
|
15915
|
Fri Mar 12 13:48:53 2021 |
gautam | Summary | SUS | Coil Rs & Ls for PRM/BS/SRM | I didn't repeat Koji's measurement,
but he reports the expected ~3.2mH per coil
on all the BS and PRM coils. |
|
|
15914
|
Fri Mar 12 13:01:43 2021 |
rana | Summary | SUS | Coil Rs & Ls for PRM/BS/SRM | ugh. sounds bad - maybe a short. I suggest
measuring the inductance; thats usually a
clearer measurement of coil health |
|
|
15913
|
Fri Mar 12 12:32:54 2021 |
gautam | Summary | SUS | Coil Rs & Ls for PRM/BS/SRM | For consistency, today, I measured both
the BS and PRM actuator balancing using the
same technique and don't find as serious |
|
|
15912
|
Fri Mar 12 11:44:53 2021 |
Paco, Anchal | Update | training | IMC SUS diagonalization in progress | [Paco, Anchal]
- Today we spent the morning shift
debugging SUS input matrix diagonalization. |
|
|
15911
|
Fri Mar 12 11:02:38 2021 |
gautam | Update | CDS | cds reboot | I looked into this a bit today morning.
I forgot exactly what time we restarted the
machines, but looking at the timesyncd logs, |
|
|
15910
|
Fri Mar 12 03:28:51 2021 |
Koji | Update | CDS | cds reboot | I want to emphasize the followings:
FB's RTC (real-time
clock/motherboard clock) is synchronized |
|
|
15909
|
Fri Mar 12 03:23:37 2021 |
Koji | Update | BHD | DO card (DO-32L-PE) brought from WB | I've brought 4 DO-32L-PE cards from
WB for BHD upgrade for Jon. |
|
|
15908
|
Fri Mar 12 03:22:45 2021 |
Koji | Update | General | Gaussmeter in the electronics drawer | For magnet strength measurement:
There is a gaussmeter in the flukes'
drawer (2nd from the top). It turns on and |
|
|
15907
|
Fri Mar 12 03:08:23 2021 |
Koji | Summary | SUS | Coil Rs & Ls for PRM/BS/SRM | Summary
Per Gautam's request, I've
checked the coil resistances and inductances. |
|
|
15906
|
Thu Mar 11 20:18:00 2021 |
gautam | Update | LSC | High bandwidth POY | I repeated the high bandwidth POY locking
experiment.
The "Q" demod |
|
|
15905
|
Thu Mar 11 18:46:06 2021 |
gautam | Update | CDS | cds reboot | Since Koji was in the lab I decided to
bite the bullet and do the reboot. I've
modified the reboot script - now, it prompts |
|
|
15904
|
Thu Mar 11 14:27:56 2021 |
gautam | Update | CDS | timesync issue? | I have recently been running into hitting
the 4MB/s data rate limit on testpoints -
basically, I can't run DTT TF and spectrum |
|
|
15903
|
Thu Mar 11 14:03:02 2021 |
gautam | Update | LSC | AO path | There is some evidence of weird saturation
but the gain balancing (0.8dB) and orthogonality
(~89 deg) for the daughter board on the REFL11 |
|
|
15902
|
Thu Mar 11 08:13:24 2021 |
Paco, Anchal | Update | SUS | IMC First Free Swing Test failed due to typo, restarting now | [Paco, Anchal]
The triggered code went on at 5:00
am today but a last minute change I made |
|
|
15901
|
Thu Mar 11 02:10:06 2021 |
Koji | Summary | BHD | BHD Platform vertical dimentions | Stephen and I discussed the nominal heights
of the BHD platform components.
The beam height from the |
|
|
15900
|
Thu Mar 11 01:45:42 2021 |
gautam | Update | LSC | PRFPMi |
PRM satellite box indeed seems
to have been the culprit - shortly after
I swapped it to the SRM, its shadow sensors |
|
|
15899
|
Wed Mar 10 19:58:27 2021 |
gautam | Update | LSC | SR785 hooked up to CM board | In preparation for later today evening.
The TT alignment wasn't visibly disturbed. |
|
|
15898
|
Wed Mar 10 17:35:47 2021 |
gautam | Update | SUS | Spooky action at a distance | As I am sitting in the control room, the
PRM suspension watchdog tripped again. This
time, there is clearly no |
|
|
15897
|
Wed Mar 10 15:35:25 2021 |
Paco, Anchal | Summary | IMC | IMC free swinging experiment set to trigger at 5:00 am | A tmux session named "MCFreeSwingTest"
will run on Rossa. This session is running
script scripts/SUS/freeSwingMC.py (also attached) |
|
|
15896
|
Wed Mar 10 15:29:58 2021 |
Anchal | Summary | IMC | IMC free swinging prep | No we didn't fix the issue. We'll
post some screenshots tomorrow. From "sitemap>Shutter>PSL"
we meant in Shutter medm window, we clicked |
|
|
15895
|
Wed Mar 10 15:00:16 2021 |
gautam | Summary | IMC | IMC free swinging prep | Did you fix this issue? It is helpful to
post a screenshot of the offending MEDM screen
in addition to witticisms. The elog says |
|
|
15894
|
Wed Mar 10 11:55:22 2021 |
gautam | Update | SUS | PRM suspension suspect | The procedure is that the optic is kicked
to excite it, and allowed to ring down for
~1ksec, with damping turned off. The procedure |
|
|
15893
|
Wed Mar 10 11:46:22 2021 |
Paco, Anchal | Summary | IMC | IMC free swinging prep | [Paco, Anchal]
# Initial State
- MC is locked. The PRM monitor shows |
|
|
15892
|
Wed Mar 10 00:32:03 2021 |
gautam | Update | LSC | PRFPMi | The interferometer can nearly be locked
again. I was unable to fully hand off control
from ALS-->RF, I suspect I may be using |
|
|
15891
|
Tue Mar 9 18:49:28 2021 |
Yehonathan | Update | SUS | OSEM testing for SOSs | 29 Good OSEMs, of which 1 is questionable
(089) with PD voltage of 1.5V, 5 need some
work (pigtailing, replace/remove/add screws). |
|
|
15890
|
Tue Mar 9 16:52:47 2021 |
Jon | Update | CDS | Front-end testing | Today I continued with assembly and testing
of the new front-ends. The main progress
is that the IO chassis is now communicating |
|
|
15889
|
Tue Mar 9 15:22:56 2021 |
Koji | Summary | SUS | PRM suspension | I just saw the PRM watchdog tripped
at ~15:20 local (23:20UTC). I restored
the PRM but I saw only the side watchdog |
|
|
15888
|
Tue Mar 9 15:19:03 2021 |
Koji | Update | SUS | OSEM testing for SOSs | How were the statistics of them? i.e. #
of Good OSEMs, # of OK OSEMs, etc... |
|
|
15887
|
Tue Mar 9 14:37:26 2021 |
gautam | Summary | SUS | PRM suspension | The PRM got tripped ~5AM this morning.
The cause is unclear - the seismometer reports
elevated activity ~10 minutes before the |
|
|
15886
|
Tue Mar 9 14:30:22 2021 |
Yehonathan | Update | SUS | OSEM testing for SOSs | I finished ranking the OSEMS on the OSEM
wiki page. |
|
|
15885
|
Tue Mar 9 12:41:29 2021 |
Koji | Summary | Electronics | Investigation on the invacuum Dsub cables | I believe the aLIGO style invac dsub cables
and the conventional 40m ones are incompatible.
While the aLIGO spec is that Pin1 |
|
|
15884
|
Tue Mar 9 10:57:06 2021 |
Paco, Anchal | Summary | IMC | XARM lock and POX spectra | [Paco, Anchal]
- Upon arrival, MC is locked, and
we can see light in MON5 (PRM) (usually dark). |
|
|
15883
|
Mon Mar 8 22:01:26 2021 |
gautam | Update | LSC | More PRMI | There are still many mysteries remaining
- e.g. the MICH-->PRCL contribution still
can't be nulled. But for now, I have |
|
|
15882
|
Mon Mar 8 20:11:51 2021 |
rana | Frogs | Computer Scripts / Programs | activate_matlab out of control on Megatron | there were a zillion processes trying to
activate (this is the initial activation
after the initial installation) matlab 2015b |
|
|
15881
|
Mon Mar 8 19:22:56 2021 |
rana | Summary | SUS | IMC suspension characterization | Herewith,
I describe an adventure |
|
|
15880
|
Mon Mar 8 17:09:29 2021 |
gautam | Update | SUS | PRM coil actuators heavily imbalanced | I realized I hadn't checked the PRM
actuator as thoroughly as I had the others.
I used the Oplev as a sensor to check the |
|
|
15879
|
Mon Mar 8 12:54:54 2021 |
gautam | Update | Equipment loan | 40m-->Cryo |
Busby box
SR554 transformer
preamplifier
|
|