| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16593
|
Tue Jan 18 18:16:28 2022 |
Anchal | Summary | BHD | Part IV of BHR upgrade - SR2 Sat Amp Box inspection | I tested the monitor ports on the SR2
Sat Amp Box but found that all LED Mon
and PD Mon are giving expected values. I |
|
|
16595
|
Wed Jan 19 12:50:10 2022 |
Anchal | Summary | BHD | Part IV of BHR upgrade - SR2 OSEM tuning progress. | It was indeed the issue of the top OSEM
plate not being in the right place horizontally.
But the issue was more non-trivial. I believe |
|
|
16598
|
Wed Jan 19 16:22:48 2022 |
Anchal | Update | BHD | PR2 transmission calculation updated | I have further updated my calculation.
Please find the results in the attached pdf.
Following is the description of |
|
|
16605
|
Thu Jan 20 17:03:36 2022 |
Anchal | Summary | BHD | Part IV of BHR upgrade - SR2 OSEM tuned. | The main issue with SR2 OSEMs, now that
I think of it, was that the BS table was
very inclined due to the multiple things |
|
|
16608
|
Thu Jan 20 18:16:29 2022 |
Anchal | Update | BHD | AS4 set to trigger free swing test | AS4 is set to go through a free swinging
test at 10 pm tonight. We have used this
script (Git/40m/scripts/SUS/InMatCalc/ |
|
|
16609
|
Thu Jan 20 18:41:55 2022 |
Anchal | Summary | BHD | SR2 set to trigger free swing test | SR2 is set to go through a free swinging
test at 3 am tonight. We have used this script
(Git/40m/scripts/SUS/InMatCalc/freeSwing.py) |
|
|
16610
|
Fri Jan 21 11:24:42 2022 |
Anchal | Summary | BHD | SR2 Input Matrix Diagonalization performed. | The free swinging test
was successful. I ran the input matrix diagonalization
code ( |
|
|
16613
|
Fri Jan 21 16:40:10 2022 |
Anchal | Update | BHD | AS4 Input Matrix Diagonalization performed. | The free swinging test was successful.
I ran the input matrix diagonalization code
(/opt/rtcds/caltech/c1/Git/40m/scripts/SUS/InMAtCalc/sus_diagonalization.py) |
|
|
16618
|
Mon Jan 24 18:53:09 2022 |
Anchal | Summary | BHD | Part VIII of BHR upgrade - LO2 placed and OSEMs tuned | I placed LO2 in its planned position in
BS chamber, inserted the OSEMs, and tuned
their position to halfway brightness. At |
|
|
16619
|
Mon Jan 24 20:48:48 2022 |
Anchal | Update | BHD | AS4 Input Matrix Diagonalization performed. | I agree. That's an interesting idea.
But does that mean that there is an always
working inverse matrix solution or that any |
|
|
16621
|
Tue Jan 25 10:55:02 2022 |
Anchal | Summary | BHD | Part VIII of BHR upgrade - LO2 input matrix diagonalization performed. | The free swinging test was successful.
I ran the input matrix diagonalization code
(/opt/rtcds/caltech/c1/Git/40m/scripts/SUS/InMAtCalc/sus_diagonalization.py) |
|
|
16622
|
Tue Jan 25 11:02:54 2022 |
Anchal | Summary | BHD | Part IX of BHR upgrade - AS1 free swing test failed | For some reasonf the free swing test showed
only one resonance peak (see attachment 1).
This probably happened because one of the |
|
|
16623
|
Tue Jan 25 16:42:03 2022 |
Anchal | Summary | BHD | Reduced filter gains in all damped new SOS | I noticed that our current suspension damping
loops for the new SOS were railing the DAC
outputs. The reason being that cts2um module |
|
|
16627
|
Thu Jan 27 17:57:35 2022 |
Anchal | Summary | BHD | Part III of BHR upgrade - Replaced small suspended PR3 with new SOS PR3 and OSEM tuning | [Anchal, Paco]
We removed the old PR3 housed in
a tip-tilt style suspension and put it on |
|
|
16632
|
Fri Jan 28 16:35:18 2022 |
Anchal | Summary | BHD | AS1, PR2 and PR3 set to trigger free swing test | AS1, PR2 and PR3 are set to o go through
a free swinging test at 3 am. We have used
this script |
|
|
16637
|
Wed Feb 2 16:22:00 2022 |
Anchal | Summary | BHD | Part III of BHR upgrade - PR2 inpute matrix diagonalized | The
free swinging test was successful. I
ran the input matrix diagonalization code |
|
|
16638
|
Wed Feb 2 16:27:57 2022 |
Anchal | Summary | BHD | Part III of BHR upgrade - PR3 inpute matrix diagonalized | The
free swinging test was successful. I
ran the input matrix diagonalization code |
|
|
16639
|
Wed Feb 2 16:32:02 2022 |
Anchal | Summary | BHD | Part IX of BHR upgrade - AS1 free swing test still not good | We still did not get a good AS1 free swinging
spectrum. It seems the Side OSEM is reporting
coupling to too many DOFs and some extra |
|
|
16647
|
Fri Feb 4 10:21:39 2022 |
Anchal | Summary | General | Complete lab shutdown | Please edit this same
entry throughout the day for the shutdown |
|
|
16652
|
Wed Feb 9 11:56:24 2022 |
Anchal | Update | General | Bringing back CDS | [Anchal, Paco]
Bringing back CDS took a lot of
work yesterday. I'm gonna try to summarize |
|
|
16657
|
Thu Feb 10 15:41:00 2022 |
Anchal | Update | General | Scheduled power outage recovery - Locking mode cleaner(s) | I found out that the ESP300 service needs
to be run in root mode for it to be able
to connect to the USB port of HWP motor controller. |
|
|
16658
|
Thu Feb 10 17:57:48 2022 |
Anchal | Update | General | Scheduled power outage recovery - Locking mode cleaner(s) | Something is wrong with the Video MUX.
The system did not turn back on with full
functionality. Even though we see the screens |
|
|
16664
|
Fri Feb 11 10:56:38 2022 |
Anchal | Update | CDS | [Solved] Huge random numbers flowing into ETMX/ETMY ASC PIT/YAW | Yeah, this is a known issue actually. We
go to ASC screen and manually swich off all
the outputs after every reboot. We haven't |
|
|
16665
|
Fri Feb 11 11:17:00 2022 |
Anchal | Update | General | Scheduled power outage recovery | I found that two computers are not powering
up in the control room, Ottavia and Allegra.
Allegra was important for us as it had the |
|
|
16667
|
Fri Feb 11 16:09:11 2022 |
Anchal | Update | General | Scheduled power outage recovery - Input power increased | We increased the input power to IMC by
replacing the 98% transmission BS by a 10%
transmission BS on the detection table (reverse |
|
|
16668
|
Fri Feb 11 17:07:19 2022 |
Anchal | Update | CDS | [Solved] Huge random numbers flowing into ETMX/ETMY ASC PIT/YAW | The autoBurt file for FE already has the
C1:ASC-ETMX_PIT_SW2 (and other channels for
ETMY, ITMX, ITMY, BS and for YAW) present, |
|
|
16674
|
Wed Feb 16 15:19:41 2022 |
Anchal | Update | General | Reconfigured MC reflection path for low power | I reconfigured the MC reflection path for
low power. This meant the following changes:
Replaced the 10% reflection |
|
|
16676
|
Wed Feb 23 15:08:57 2022 |
Anchal | Update | General | Removed extra beamsplitter in MC WFS path | As discussed in the meeting, I removed
the extra beam splitter that dumps most of
the beam going towards WFS photodiodes. |
|
|
16677
|
Thu Feb 24 14:32:57 2022 |
Anchal | Update | General | MC RFPD DCMON channel got stuck to 0 | I found a peculiar issue today. The C1:IOO-MC_RFPD_DCMON
remains constantly 0. I wonder if the RFPF
output is being read properly. I opened the |
|
|
16679
|
Thu Feb 24 19:26:32 2022 |
Anchal | Update | General | IMC Locking | I think I have aligned the cavity, including
MC1 such that we are seeing flashing of fundamental
mode and significant transmission sum value |
|
|
16697
|
Thu Mar 3 15:37:40 2022 |
Anchal | Summary | CDS | c1teststand restructured | c1teststand has been restructured. There
is no port computer called 'c1teststand'
anymore. When you ssh into the c1teststand |
|
|
16700
|
Fri Mar 4 11:04:34 2022 |
Anchal | Summary | CDS | c1susaux2 system setup and running | I took the c1teststand computer from teststand
and converted it into c1susaux2. To do so,
I installed a fresh copy of debian 10 on |
|
|
16712
|
Mon Mar 7 19:38:47 2022 |
Anchal | Summary | CDS | c1susaux2 slow controls issues | I tried to perform a simple enabling test
of coils using c1susaux2 modbus channels
but failed. I'm able to do the enabling |
|
|
16724
|
Mon Mar 14 12:20:05 2022 |
Anchal | Summary | CDS | c1susaux2 slow controls acromag chassis installed | [Anchal, Yehonathan, Ian]
We installed c1susaux2 acromag
chassis in 1Y0 with c1susaux2 computer. We |
|
|
16726
|
Tue Mar 15 11:52:34 2022 |
Anchal | Summary | CDS | c1su2 model updated for sending Run/Acquire Binary Output to Binary Interface card | I routed the XXX_COIL_DW signals from the
7 SOS blocks in c1su2.mdl (located at /cvs/cds/rtcds/userapps/trunk/sus/c1/models/c1su2.mdl)
to the binary outputs from the FE model. |
|
|
16728
|
Tue Mar 15 14:10:41 2022 |
Anchal | Summary | CDS | c1su2 model remade, reinstalled, restarted after the update | I have restarted c1su2 model with the connections
of Run Acquire switch to analog filters on
coil drivers. Following steps were taken: |
|
|
16729
|
Tue Mar 15 18:42:37 2022 |
Anchal | Summary | BHD | Part IX of BHR upgrade - AS1 resuspended and OSEMs tuned | http://nodus.ligo.caltech.edu:8080/40m/16722
http://nodus.ligo.caltech.edu:8080/40m/16716 |
|
|
16730
|
Tue Mar 15 18:45:12 2022 |
Anchal | Summary | BHD | Part X of BHR upgrade - BHDBS Path setup | [Paco, Anchal]
BS Chamber work
ASL
was positioned in nominal place.
PR3 |
|
|
16733
|
Thu Mar 17 17:23:22 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - Green laser alignment | [Anchal, Yehonathan] (on Y Arm)
We first checked if the PZT mirrors
M1 and M2 can be controlled. They indeed |
|
|
16734
|
Thu Mar 17 19:12:44 2022 |
Anchal | Summary | CDS | c1auxey1 slow controls acromag chassis installed, not powered | [Anchal, Tega]
We installed c1auxey1 computer
and the acromag chassis in 1Y4. The computer |
|
|
16737
|
Fri Mar 18 19:10:51 2022 |
Anchal | Summary | CDS | c1auxey1 slow controls issues | I started the modbusIOC service on c1auxey1
and added PD variance channels for UR and
SD as well. There are unfortunately |
|
|
16738
|
Mon Mar 21 14:22:52 2022 |
Anchal | Update | SUS | ETMY Alignmnet offsets needed to be changed | I'm not sure why but the PIT and YAW
offset values of +2725 and -2341 were not
sufficient for the reflected OPLEV beam to |
|
|
16740
|
Mon Mar 21 18:24:07 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - Green laser alignment on Yarm | [Anchal, Tega]
We did the following alignment
steps on Yarm today: |
|
|
16741
|
Mon Mar 21 18:42:06 2022 |
Anchal | Summary | CDS | c1auxey1 slow controls issues | Another issue, Green Y Shutter can not
be controlled with the EPICS controls right
now. This needs to be investigated. |
|
|
16742
|
Thu Mar 24 19:20:28 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - Green laser alignment on Yarm | [Anchal, Paco]
Uneloged: yesterday, Paco
and Ian tried locking the green laser on |
|
|
16743
|
Fri Mar 25 11:39:14 2022 |
Anchal | Update | SUS | ETMY SUS Electronics Replacement - Questions | After Ian updated the cts2um filters for
OSEM, shouldn't the damping gains be
increased back by factor of 10 to previos |
|
|
16744
|
Fri Mar 25 18:20:28 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - Green laser alignment on Yarm | [Anchal, Paco, Shruti]
Today we found out that
the laser controller at the Yend had it's |
|
|
16756
|
Mon Apr 4 17:03:47 2022 |
Anchal | Summary | CDS | c1susaux2 slow controls acromag chassis fixed and installed | [Anchal, JC, Ian, Paco]
We have now fixed all issues with
the PD mons of c1susaux2 chassis. The slow |
|
|
16757
|
Tue Apr 5 18:15:06 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - IR laser alignment on Xarm | [Paco, Anchal, Ian, JC]
We attempted the alignment of IR
beam into the arm cavities. We used PR2 and |
|
|
16759
|
Wed Apr 6 12:03:51 2022 |
Anchal | Summary | BHD | Part IIa of BHR upgrade - IR laser alignment on Yarm | [Anchal, Paco]
After Koji reduced the output resistors
on PR2/PR3 coil drivers, we got much better |
|