| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
15955
|
Tue Mar 23 09:16:42 2021 |
Paco, Anchal | Update | Computers | Power cycled C1PSL; restored C1PSL | So actually, it was the C1PSL channels
that had died. We did the following to get
them back: |
|
|
15954
|
Mon Mar 22 19:07:50 2021 |
Paco, Anchal | Update | SUS | Trying coil actuation balance | We found that following protocol works
for changing the input matrices to new matrices:
Shut the PSL shutter C1:PSL-PSL_ShutterRqst. |
8x |
|
15953
|
Mon Mar 22 16:29:17 2021 |
gautam | Update | ASC | Some prep for AS WFS commissioning |
Added rough cts2mW calibration
filters to the quadrants, see |
|
|
15952
|
Mon Mar 22 15:10:00 2021 |
rana | Update | SUS | Trying coil actuation balance | There's an integrator in the MC WFS
servos, so you should never be disabling
the ASC inputs in the suspensions. Disabling |
|
|
15951
|
Mon Mar 22 11:57:21 2021 |
Paco, Anchal | Update | SUS | Trying coil actuation balance | [Paco, Anchal]
For MC coil balancing we
will use the ASC (i.e. WFS) error signals |
|
|
15950
|
Sun Mar 21 19:31:29 2021 |
rana | Summary | Electronics | RTL-SDR for monitoring RF noise / interference | When we're debugging our RF system,
either due to weird demod phases, or low
SNR, or non-stationary noise in the PDH signals, |
|
|
15949
|
Fri Mar 19 22:24:54 2021 |
gautam | Update | LSC | PRMI investigations: what IS the matrix?? | I did all these checks today.
|
|
|
15948
|
Fri Mar 19 19:15:13 2021 |
Jon | Update | CDS | c1auxey assembly | Today I helped Yehonathan get started with
assembly of the c1auxey (slow controls) Acromag
chassis. This will replace the final remaining |
|
|
15947
|
Fri Mar 19 18:14:56 2021 |
Jon | Update | CDS | Front-end testing | Summary
Today I finished setting
up the subnet for new FE testing. There
are clones of both fb1 and chiara running |
|
|
15946
|
Fri Mar 19 15:31:56 2021 |
Aidan | Update | Computers | Activated MATLAB license on donatella | Activated MATLAB license on donatella |
|
|
15945
|
Fri Mar 19 15:26:19 2021 |
Aidan | Update | Computers | Activated MATLAB license on megatron | Activated MATLAB license on megatron |
|
|
15944
|
Fri Mar 19 11:18:25 2021 |
gautam | Update | LSC | PRMI investigations: what IS the matrix?? | From Finesse simulation (and also analytic
calcs), the expected PRCL optical gain
is ~1 MW/m (there is a large uncertainty, |
|
|
15943
|
Fri Mar 19 10:49:44 2021 |
Paco, Anchal | Update | SUS | Trying coil actuation balance | [Paco, Anchal]
We decided to try out the
coil actuation balancing after seeing some |
|
|
15942
|
Thu Mar 18 21:37:59 2021 |
rana | Update | LSC | PRMI investigations: what IS the matrix?? |
Locked PRMI several tmes after
Gautam setup. Easy w IFO CONFIG screen |
|
|
15941
|
Thu Mar 18 18:06:36 2021 |
gautam | Update | Electronics | Modified Sat Amp and Coil Driver | I uploaded the annotated schematics (to
be more convenient than the noise analysis
notes linked from the DCC page) for the |
|
|
15940
|
Thu Mar 18 13:12:39 2021 |
gautam | Update | Computer Scripts / Programs | Omnigraffle vs draw.io | What is the advantage of Omnigraffle c.f.
draw.io?
The latter also has a desktop app, and for |
|
|
15939
|
Thu Mar 18 12:46:53 2021 |
rana | Update | SUS | Testing of new input matrices with new data | Good Enough! Let's move on with output
matrix tuning. I will talk to you guys about
it privately so that the whole doesn't |
|
|
15938
|
Thu Mar 18 12:35:29 2021 |
rana | Update | safety | Door to outside from control room was unlocked | I think this is probably due to the safety
tour yesterday. I beleive Jordan showed them
around the office area and C&B. Not sure |
|
|
15937
|
Thu Mar 18 09:18:49 2021 |
Paco, Anchal | Update | SUS | Testing of new input matrices with new data | [Paco, Anchal]
Since the new generated matrices
were created for the measurement made last |
|
|
15936
|
Thu Mar 18 07:02:27 2021 |
Koji | Update | LSC | REFL11 demod retrofitting | Attachment 1: Transfer Functions
The original circuit had a gain
of ~20 and the phase delay of ~1deg at 10kHz, |
|
|
15935
|
Thu Mar 18 01:12:31 2021 |
gautam | Update | LSC | PRFPMi |
Integrated >1
hour at RF only control, high circulating
powers tonight.
All |
|
|
15934
|
Wed Mar 17 16:30:46 2021 |
Anchal | Update | SUS | Normalized Input Matrices plotted better than SURF students | Here, I present the same input matrices
now normalized row by row to have same norm
as current matrices rows. These now I plotted |
|
|
15933
|
Wed Mar 17 15:04:20 2021 |
gautam | Update | Electronics | Ribbon cable for chassis | I had asked Chub to order 100ft ea of 9,
15 and 25 conductor ribbon cable. These arrived
today and are stored in the VEA alongside |
|
|
15932
|
Wed Mar 17 15:02:06 2021 |
gautam | Update | safety | Door to outside from control room was unlocked | I came into the lab a few mins ago and
found the back door |
|
|
15931
|
Wed Mar 17 14:40:39 2021 |
Yehonathan | Update | BHD | SOS SmCo magnets Inspection | Continuing with envelope number 2
Magnet |
|
|
15930
|
Wed Mar 17 11:57:54 2021 |
Paco, Anchal | Update | SUS | Tested New Input Matrix for MC1 | [Paco, Anchal]
Paco accidentally clicked on C1:SUS-MC1_UL_TO_COIL_SW_1_1
(MC1 POS to UL Coil Switch) and clicked it |
|
|
15929
|
Wed Mar 17 10:52:48 2021 |
Jordan | Update | SUS | 3" Ring Adpater for SOS | I have added a .1", 45deg chamfer
to the bottom of the adapter ring. This was
added for a new placement of the eq stops, |
|
|
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 |
|