ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14824
|
Fri Aug 2 16:46:09 2019 |
Kruthi | Update | Cameras | Clean up | I've put the analog camera back and
disconnected the 151 unit GigE. But I ran
out of time and wasn't able to replace |
|
|
14825
|
Fri Aug 2 17:07:33 2019 |
yehonathan, gautam | Update | Loss Measurement | | We run a loss measurement on the Y arm
with 50 repetitions. |
|
|
14826
|
Sun Aug 4 14:39:41 2019 |
gautam | Update | General | some lab activity |
Unresponsive c1psl, c1iool0, c1auxey
and c1iscaux VME crates were keyed.
c1psl
channels were burt-restored, did a burtrestore, |
|
|
14827
|
Mon Aug 5 14:47:36 2019 |
yehonathan | Update | Loss Measurement | | Summary:
I analyze the 100 reps loss measurement
of the Y arm using the AnalyzeLossData.ipynb |
|
|
Draft
|
Mon Aug 5 16:28:41 2019 |
yehonathan | Update | Loss Measurement | what is going on with the loss measurements ? | We hypothesize that the systematic error
in the loss measurement can come from the
fact that the requirement on the alignment |
|
|
14829
|
Mon Aug 5 17:23:26 2019 |
gautam | Summary | Computers | WiFi Settings on asia | The VEA laptop asia was configured to be
able to connect to too many WiFi networks
- it was getting conflicted in its default |
|
|
14830
|
Mon Aug 5 17:36:04 2019 |
yehonathan | Update | Loss Measurement | | We check for unexpected drifts in the PD
reading (clipping and such). We put a pickoff
mirror where the PD used to be and place |
|
|
14831
|
Tue Aug 6 14:12:02 2019 |
yehonathan | Update | Computers | making rossa great again | cdsutils is not working on rossa.
Import cdsutils produces this error:
In [2]: import cdsutils |
|
|
14832
|
Tue Aug 6 14:55:23 2019 |
gautam | Update | CDS | Making Matlab R2015b the default | ML2013 is unable to open Simulink on any
of the workstations. We decided to make the
default version of Matlab R2015b (the default |
|
|
14833
|
Tue Aug 6 15:52:06 2019 |
gautam | Update | BHD | Preliminary BHD calculations | Summary:
The requirement on the phase noise
on the direct backscatter |
|
|
14834
|
Tue Aug 6 16:44:50 2019 |
yehonathan | Update | Loss Measurement | | I grab 2 hours of the PD measurements using
dlData_simple.ipynb in the misaligned state.
I get pretty much a normally distributed |
|
|
14835
|
Tue Aug 6 23:09:20 2019 |
gautam | Update | ALS | EY table work |
Removed power monitoring PD (It
was off anyways)
Installed Steering
mirror and collimator in K6XS mount (fast |
|
|
14836
|
Thu Aug 8 12:01:12 2019 |
gautam | Update | IOO | MC1 suspension oddness | At ~1am PDT today, all the MC1 shadow sensor
readbacks (fast CDS channels and Slow Acromag
channels, latter not shown here) went to |
|
|
14837
|
Fri Aug 9 08:59:04 2019 |
gautam | Update | CDS | Prep for install of c1iscaux | [chub, gautam]
We scoped out the 1Y3 rack this
morning to figure out what needs to be done |
|
|
14838
|
Fri Aug 9 16:37:39 2019 |
gautam | Update | ALS | More EY table work | Summary:
220 uW / 600 uW (~36 %
mode-matching) of IR light coupled into fiber |
|
|
14839
|
Fri Aug 9 20:58:33 2019 |
Jon | Update | Electronics | Borrowed Variac transformer | I borrowed an old-looking Variac variable
transformer from the power supplies cabinet
along the y-arm. It is currently in |
|
|
14840
|
Sun Aug 11 11:47:42 2019 |
gautam | Update | CDS | Bench test of c1iscaux | I bench tested the functionality of all
the c1iscaux Acromag crate channels. Summary:
we are not ready for a Monday install, much |
|
|
14841
|
Mon Aug 12 17:36:04 2019 |
gautam | Update | CDS | More bench test of c1iscaux | [chub, gautam]
With Chub's help, most of the
problems have been resolved. Summary: I |
|
|
14842
|
Mon Aug 12 19:58:23 2019 |
gautam | Update | IOO | MC1 suspension oddness | Repair plan:
Get "spare" satellite
box working --- Chub
According |
|
|
14843
|
Mon Aug 12 21:25:19 2019 |
Koji | Update | CDS | More bench test of c1iscaux | 1.
> Looking through the manual,
I found a recommendation (pg10) that the |
|
|
14844
|
Tue Aug 13 08:07:09 2019 |
gautam | Update | CDS | P1--->P2 | This morning, I wanted to move the existing
cables going to the P1 connectors of the
iLIGO whitening boards to the P2 connector, |
|
|
14845
|
Tue Aug 13 14:36:17 2019 |
gautam | Update | CDS | P1--->P2 | As it turns out, only one extra shroud
needed to be installed - I did this and migrated
the cables for the 4 whitening boards from |
|
|
14846
|
Thu Aug 15 18:54:54 2019 |
gautam | Update | ALS | ALS sensing noise due to IMC | Summary:
I came aross an interesting
suggestion by Yutaro that KAGRA's |
|
|
14847
|
Fri Aug 16 04:24:03 2019 |
rana | Update | ALS | ALS sensing noise due to IMC | What about just use high gain feedback
to MC2 below 20 Hz for the IMC lock? That
would reduce the excess if this theory is |
|
|
14848
|
Fri Aug 16 16:40:04 2019 |
gautam | Update | CDS | 1Y3 work | [chub,
gautam] |
|
|
14849
|
Sat Aug 17 16:49:23 2019 |
gautam | Update | CDS | More 1Y3 work | Work done today:
All ribbon cable connections
to the backplane of the 1Y2 Eurocrates were |
|
|
14850
|
Mon Aug 19 14:36:21 2019 |
gautam | Update | CDS | c1iscaux remaining work | Here is what is left to do:
Strain relief of all cabling.
Chub will take care of this in the coming |
|
|
14851
|
Tue Aug 20 19:05:24 2019 |
Koji | Update | CDS | MC1 (and MC3) troubleshoot | Started the troubleshoot from the MC1 issue.
Gautam showed me how to use the fake PD/LED
pair to diagnose the satellite box without |
|
|
14852
|
Thu Aug 22 12:54:06 2019 |
Koji | Update | CDS | MC1 glitch removed (for now) and IMC locking recovered | I have checked the MC1 satellite box and
made a bunch of changes. For now, the glitches
coming from the satellite box is gone. I |
7x |
|
14853
|
Thu Aug 22 20:56:51 2019 |
Koji | Update | CDS | MC1 glitch removed (for now) and IMC locking recovered | The internal ribbon cable for the MC1 satellite
box was replaced with the one in the spare
box. The MC1 box was closed and reinstalled |
|
|
14854
|
Fri Aug 23 10:01:14 2019 |
gautam | Update | BHD | OMC cavity geometry - some more modeling | Summary:
I did some more investigation of
what the appropriate cavity geometry would |
|
|
14855
|
Fri Aug 23 18:46:17 2019 |
Jon | Update | CDS | c1iscaux remaining work | I added the list of new c1iscaux channels
to /opt/rtcds/caltech/c1/chans/daq/C0EDCU.ini |
|
|
14856
|
Fri Aug 23 19:10:02 2019 |
Jon | Update | Cameras | GigE camera server is online | Following the death of rossa, which was
hosting the only working environment for
the |
|
|
14857
|
Sun Aug 25 14:18:08 2019 |
gautam | Update | CDS | c1iscaux remaining work | There were a bunch of useless / degenerate
channels added - e.g. whitening gains which
are alreay burt-snapshot. Maybe there are |
|
|
14858
|
Thu Sep 5 18:42:19 2019 |
aaron | HowTo | CDS | WFS discussion, restarting CDS | [aaron, rana]
While going to take some transfer
functions of the MC WFS loop, LSC was down. |
|
|
14859
|
Thu Sep 5 20:30:43 2019 |
rana | HowTo | CDS | WFS discussion, restarting CDS | via Polish chat, GV tells us to RTFE |
|
|
14860
|
Fri Sep 6 09:40:56 2019 |
aaron | HowTo | CDS | WFS discussion, restarting CDS | As suggested, I ran the script cds/rebootC1LSC.sh
I got a timeout error when the
script tried closing the PSL shutter ('C1:AUX-PSL_ShutterRqst' |
|
|
14861
|
Fri Sep 6 11:56:44 2019 |
aaron | HowTo | CDS | WFS discussion, restarting CDS | Rebooting
I reset c1lsc, c1sus,
and c1ioo.
I noticed that the script gives |
|
|
14862
|
Fri Sep 6 15:12:49 2019 |
Koji | HowTo | CDS | WFS discussion, restarting CDS | Assuming you are at pianosa, /etc/resolv.conf
is like
# |
|
|
14863
|
Fri Sep 6 16:38:24 2019 |
aaron | Update | ALARM | Alarm noise from smart-ups machine under workstation? | There was an alarm sound from the Smart-UPS
2200 sitting under the workstation. I see
that the 'replace battery' light |
|
|
14864
|
Fri Sep 6 18:08:29 2019 |
rana | Update | Computers | Alarm noise from smart-ups machine under workstation? | please no one touch
the UPS: last time it destroyed ROSSA.
Please ask Chub to order the replacement |
|
|
14865
|
Fri Sep 6 21:22:06 2019 |
Koji | HowTo | CDS | How to save c1ioo | Q1 Can we run the machine with the reduced
# of cores?
Q2 We might be able to order them |
|
|
14866
|
Fri Sep 6 22:03:30 2019 |
aaron | HowTo | CDS | How to save c1ioo | Saw these slightly delayed.
Q1: Not sure--is it a safe operation
for me to remove the DIMM on CPU0, replace |
|
|
14867
|
Mon Sep 9 11:36:48 2019 |
aaron | HowTo | CDS | How to save c1ioo | One pair of DIMM cards from the Sunstone
box had the same Sun part number as those
in c1ioo, so |
|
|
14868
|
Tue Sep 10 15:41:37 2019 |
aaron | Update | IOO | WFS measurements | [rika, aaron, rana]
We are getting the MC locked in
anticipation of making some WFS transfer |
|
|
14869
|
Tue Sep 10 16:10:40 2019 |
Chub | Update | | Rack Update | Still removing old cable, terminal blocks
and hardware. Once new strain reliefs
and cable guides are in place, I will need |
|
|
14870
|
Tue Sep 10 17:26:49 2019 |
Koji | Update | CDS | D1900068 SR785 accessory box | I picked up a unit of D1900068 SR785 accessory
box from Dean's office at Downs. |
|
|
14871
|
Wed Sep 11 10:26:56 2019 |
aaron | Update | IOO | WFS measurements | Gameplan
We should also have
a plan for the next couple weeks so we are
organized; heavily adapted |
|
|
14872
|
Wed Sep 11 14:37:43 2019 |
aaron | Update | IOO | WFS measurements | [aaron, rika]
We identified the Jenne laser and
found a long optical fiber that might be |
|
|
14873
|
Thu Sep 12 09:49:07 2019 |
gautam | Update | Computers | control rm wkstns shutdown | Chub wanted to get the correct part number
for the replacement UPS batteries which necessitated
opening up the UPS. To be cautious, all the |
|