| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17723
|
Thu Jul 27 10:43:58 2023 |
Koji | Update | ALS | OLTFS of digital controller | Wow, this is awesome. Can you plot the
comparison between the measured and expected
OLTFs for both (or either) Moku cases? |
|
|
17727
|
Thu Jul 27 17:03:57 2023 |
Koji | Summary | CDS | c1psl spare channel situation | I looked at the Acromag situation
of c1psl to prepare for the PSL air flow
speed sensor. |
|
|
17728
|
Thu Jul 27 18:21:33 2023 |
Koji | Update | ALS | OLTFS of digital controller | Here is the OLTF from the model of the
system I made in Python. https://github.com/CaltechExperimentalGravity/LaserStabilization/blob/main/code/PlantSim/plant_model.py
|
|
|
17730
|
Fri Jul 28 00:27:17 2023 |
Koji | Update | PEM | ITMX issue continues | Even though the noise issue of an OSEM
was resolved, the issue with ITMX still continues.
OPLEV pitch servo can't be turned |
|
|
17734
|
Sat Jul 29 00:44:57 2023 |
Koji | Update | PEM | Remarks on the IFO recovery after CDS restart. | I had a suspicion that some of the ITMX
coils were not properly working. So individual
coils of the 4 test masses were excited while |
|
|
17738
|
Mon Jul 31 22:25:07 2023 |
Koji | Update | PEM | FIXED: Strange behavior of ITMX and ITMY probably due to DAC issue | [Hiroki, Yehonathan, Yuta, Koji]
Summary
The |
|
|
17746
|
Wed Aug 2 14:50:22 2023 |
Koji | Update | PSL | FIXED: Remote switching of PSL shutter is not working | [JC Koji]
c1vac was hard rebooted. This fixed
the PSL shutter issue. |
|
|
17748
|
Wed Aug 2 17:17:37 2023 |
Koji | Update | PSL | IMC Locking (FIXED: Remote switching of PSL shutter is not working) | After the exploration of c1psl, the IMC
locking was not functioning well. It looked
like the MC autolocker issue. |
|
|
17751
|
Thu Aug 3 17:27:07 2023 |
Koji | Update | CDS | Slow machine target folder clean up | I went to /cvs/cds/caltech/target and found
some folders for apparently old targets.
c0daqawg |
|
|
17753
|
Thu Aug 3 21:35:50 2023 |
Koji | Configuration | PEM | PSL Flow speed sensor channels added | As the preparation of the flow
sensor installation, I added two slow channels
via c1psl (Acromag IOC). |
|
|
17754
|
Fri Aug 4 20:50:13 2023 |
Koji | Summary | CDS | The location where the wiper script is running | The raw frame file is stored in /frames
at fb. Before the disk space is flooded,
the wiper script deletes the old raw frame |
|
|
17756
|
Sat Aug 5 01:42:19 2023 |
Koji | Update | PEM | c1sus DAC1/DAC2 negative side DAC outputs were isolated from the downstream chain | As reported already, we resolved the c1sus
DAC0 issue by introducing the differential
receivers for the DAC output CHs. |
9x |
|
17757
|
Sat Aug 5 01:46:01 2023 |
Koji | Update | Optical Levers | BS/PRM/SRM Oplev dead | [Koij Hiroki]
While KA was working on the DAC
issue, BS/PRM/SRM Oplev died. |
|
|
17778
|
Fri Aug 11 20:44:00 2023 |
Koji | Update | PSL | CDS crash / PMC recovery and mystery / IFO recovery | [JC, Koji]
In the morning, JC came in and
found that c1sus had crashed. JC tried to |
|
|
17781
|
Mon Aug 14 15:16:40 2023 |
Koji | Update | IOO | PMC offset voltage issue fixed. IMC WFS recentered and offsets zeroed. | 1.
Well, it seems that the PMC error offset
issue still remains. |
|
|
17782
|
Tue Aug 15 00:41:17 2023 |
Koji | Update | IOO | PMC issue cont'd | I went down to the IFO hall and checked
the PMC situation. The freq mixer fixed on
the rack 1X1 had BNC-T, so the raw error |
|
|
17783
|
Tue Aug 15 00:44:29 2023 |
Koji | Update | General | ELOG slowness fixed | Elog was continuously accessed by net crawlers
or something similar. They continuously retrieve
random logs and also randomly hits the entries |
|
|
17786
|
Tue Aug 15 17:11:17 2023 |
Koji | Update | IOO | FIXED: PMC issue | Summary
The problem in the PMC
Frequency Reference Card (35.5MHz) was fixed. |
7x |
|
17790
|
Wed Aug 16 17:16:13 2023 |
Koji | Update | General | BHD / Misc Inventory | ==
BHD Components ==
BHD BS: |
11x |
|
17802
|
Tue Aug 22 15:56:53 2023 |
Koji | Update | General | BHD / Misc Inventory | Photodiode inventory: [OMC
ELOG 615] |
|
|
17806
|
Wed Aug 23 19:47:53 2023 |
Koji | Update | CDS | Dolphin Fencing Investigation / Full CDS crash / nodus reboot / recovered all | Dolphin
Investigation
- I made a basic description on |
|
|
17807
|
Thu Aug 24 02:54:19 2023 |
Koji | Update | BHD | OMC Interface Aligner / BHD OFI arrangement | OMC Interface Aligner - (It's upside
down...)
BHD OFI arrangement |
|
|
17810
|
Thu Aug 24 17:08:38 2023 |
Koji | Update | General | Excess noise on YALS BEAT | Paco took the data which means he already
had the beat note.
There is some chance that the beat |
|
|
17811
|
Fri Aug 25 20:27:33 2023 |
Koji | Update | BHD | OMC Interface Aligner | A bit improved the design of OMC Interface
Aligner
The idea is...The OMC I/F aligner |
|
|
17812
|
Fri Aug 25 22:52:30 2023 |
Koji | Update | General | Taking nodus /home/export backup | Took the backup (snapshot) of nodus'
/home/export as of Aug 25, 2023
controls@nodus> |
|
|
17813
|
Tue Aug 29 01:39:47 2023 |
Koji | Update | General | BHD / Misc Inventory | 40m BHD OFI Inventory
OFI HWP 1
Motorized |
|
|
17814
|
Tue Aug 29 02:02:51 2023 |
Koji | Update | BHD | BHD Prep Status | Ready / Soon Ready
- BHD OMC Cables ready
- OMC#1 / OMC#4 ready |
|
|
17827
|
Tue Sep 5 18:46:08 2023 |
Koji | Summary | General | Dsub 9 (DB9) cable inventory | I went to Section Y7 to check the stock
DB9-MF cables. The custom dsub cables are
also there. |
|
|
17830
|
Thu Sep 7 14:09:37 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition | The vertex electronics transition work
will begin on Monday. We expect the ongoing
ASS-X work to be completed by then. But if |
|
|
17834
|
Fri Sep 8 17:11:53 2023 |
Koji | Update | CDS | FSSSlow restoration | I came to the lab to see the recovery work
from the power glitch this morning 8:15AM.
All CDS seems up. The suspensions are somewhat |
|
|
17837
|
Tue Sep 12 18:49:51 2023 |
Koji | Update | General | Transformed 3x 18bit AI chassis into 16bit | For the preparation of the electronics
upgrade, three 18bit DAC AI chassis were
transformed to 16bit version. |
|
|
17838
|
Tue Sep 12 18:55:55 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition | We are ready to do the transition
from Wed 1PM.
The items for the upgrade was collected |
|
|
17839
|
Tue Sep 12 23:10:06 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition | Note on Sorensen:
- Eurocard crate requires
+-15V. We can place two 15V Sorensens on |
|
|
17840
|
Wed Sep 13 12:46:03 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition ~ final prep |
[OK] Reflected the sorensen
setup (minimal change from the conventional
config. (See the attachment)
Before |
|
|
17842
|
Wed Sep 13 14:02:29 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition ~ final prep | - 4x 1064nm NPROs
are OFF. The lab hall is laser safe, although |
|
|
17843
|
Wed Sep 13 17:26:26 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition ~ DAY 1 | [Radhika, Paco, Murtaza, Koji]
- Removed all the units
that will not be used in the new setup. |
|
|
17844
|
Thu Sep 14 11:46:28 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition ~ DAY 2 | [Radhika, Paco, Murtaza, Koji]
Morning work:
Power Strip assembly
Power |
|
|
17845
|
Fri Sep 15 12:51:29 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition ~ DAY 3 | [Radhika, Paco, Murtaza, Koji]
We made great |
|
|
17846
|
Fri Sep 15 18:50:34 2023 |
Koji | Update | CDS | Dolphin Fencing Investigation / Full CDS crash / nodus reboot / recovered all | Dolphin
Fencing technique
I believe that the dolphin emits |
|
|
17847
|
Fri Sep 15 22:57:15 2023 |
Koji | Summary | Electronics | c1sus ADC1 AA chassis fix | c1sus ADC1 AA chassis fix.
Brought the chassis on
the workbench.
Opened the chassis |
|
|
17848
|
Mon Sep 18 10:26:12 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition ~ DAY 4 | [JC, Paco, Radhika, Koji]
Morning/Afternoon work:
Long DB cable installation |
|
|
17852
|
Mon Sep 18 20:16:03 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition ~ DAY 4 | - Here is the thought how does the factor
of 9 come from:
We are driving OSEM LEDs |
|
|
17853
|
Mon Sep 18 23:09:40 2023 |
Koji | Summary | Electronics | Vertex Electronics Transition ~ DAY 4 | MC1 is ready for the damping test
Trouble shooting plan
Is the LED on? => Check |
|
|
17856
|
Tue Sep 19 19:48:20 2023 |
Koji | Summary | Electronics | Vertex Electronics Trouble shooting | [Paco, Murtaza, JC, Koji, Radhika]
MC1/MC2 was working fine.
At |
|
|
17857
|
Tue Sep 19 20:49:08 2023 |
Koji | Summary | Electronics | Vertex Electronics Trouble shooting | [Murtaza, Koji]
ITMX / BS / PRM sat amps were removed
from the rack and checked on the workbench. |
|
|
17858
|
Tue Sep 19 23:40:33 2023 |
Koji | Summary | Electronics | Vertex Electronics Wed Plan | Plan
for Sept 20, 2023
For morning people: |
|
|
17859
|
Wed Sep 20 00:03:22 2023 |
Koji | Summary | Electronics | re: Filter Coefficient Loading Issue | I asked CDS mattermost for help. Chris
(Wipf) checked it and reported it is working
fine as usual (without fixing anything). |
|
|
17860
|
Wed Sep 20 00:20:09 2023 |
Koji | Summary | Electronics | Vertex Electronics ~ change in the actuator calibration | I found the actuator calibration is more
complicated. The numbers I reported in the
previous elog was not correct. |
|
|
17864
|
Wed Sep 20 18:18:38 2023 |
Koji | Summary | Electronics | Vertex Electronics Wed Plan | [Koji, Murtaza, JC]
Regarding PRM/BS:
PRM2 cable and BS2 cable |
|
|
17865
|
Thu Sep 21 12:02:25 2023 |
Koji | Update | General | Power Outage Sept 21, 2023 ~9AM | [JC, Paco, Koji]
We had a power outage on Sept 21,
2023 at ~9AM. This is the third power outage |
|