| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17902
|
Mon Oct 16 20:50:32 2023 |
Paco | Update | IOO | some IMC WFS tweaks: update - MC_TRANS +80dB FM5 back on | Since the MC_TRANS_PIT and MC_TRANS_YAW
control signals were still small even though
the sum was ok, I found the C1:IOO-MC_TRANS_PIT/YAW |
|
|
17901
|
Mon Oct 16 19:37:12 2023 |
yuta | Update | LSC | PRMI 1f carrier locking recovered, but not so stable | PRMI
1f carrier locking using AS55_Q and REFL55_I
was recovered, but |
6x |
|
17900
|
Mon Oct 16 08:28:27 2023 |
JC | Update | VAC | N2 tripped and Vac locked | The last N2 tank ran out this morning ~3:00am.
Since then the Vac system tripped and the
shutter closed. I had to head over to the |
|
|
17899
|
Fri Oct 13 08:42:14 2023 |
murtaza | Update | SUS | OPLEV Whitening Board Missing (ETMX) | [Yuta, Paco, Murtaza]
[WIP]
Chasing the excess noise in TRX, |
6x |
|
17898
|
Thu Oct 12 18:47:52 2023 |
yuta | Update | LSC | ALS DARM CARM locking successful | ALS
DARM and CARM locked.
The procedure basically follows what |
|
|
17897
|
Wed Oct 11 22:57:11 2023 |
Paco | Update | ALS | On the residual frequency dependence of the ALS DARM calibration with FPMI | [Paco, Yuta]
Attachment #1 shows
tonights OOL ALS noises with the PSL hepa |
|
|
17896
|
Wed Oct 11 21:23:49 2023 |
yuta | Update | LSC | FPMI locking restored after vertex coil driver upgrade | [Murtaza, Vittoria, Paco, Yuta]
We
restored FPMI RF locking for the first time |
9x |
|
17895
|
Tue Oct 10 17:43:39 2023 |
Murtaza | HowTo | Computer Scripts / Programs | ligocdsws - XQuartz Troubleshoot | ligocdsws
(https://git.ligo.org/christopher.wipf/ligocdsws)
is a docker with all the good stuff (cdutils, |
|
|
17894
|
Tue Oct 10 17:15:54 2023 |
Murtaza | Update | SUS | Post-Vertex Coil Driver Upgrade Suspension Calibration | Post the vertex coil driver upgrade, we
need to make sure everything downstream is
working correctly. Starting with checking |
18x |
|
17893
|
Tue Oct 10 16:04:15 2023 |
rana | Update | IOO | some IMC WFS tweaks: update - WFS still look OK | |
|
|
17892
|
Tue Oct 10 14:10:11 2023 |
Paco | Configuration | LSC | ETMY actuation calibration using ALSY | [Vittoria, Paco]
This work was done yesterday ~
8 PM. After we aligned YARM and locked using |
|
|
17891
|
Mon Oct 9 15:17:05 2023 |
rana | Update | IOO | some IMC WFS tweaks |
with WFS off, I use MC_ALIGN screen
to get erasonable power and better cenetering
on mc2 QPD
With good alignment, |
|
|
17890
|
Mon Oct 9 14:10:50 2023 |
rana, paco | Update | IOO | IFO ALIGNED (WITH SOME ISSUES) | since the IMC alignement / rework from
Sep 26, the IMC WFS has not been working.
The outputs seem to be railing after a long |
|
|
17889
|
Sat Oct 7 21:39:29 2023 |
Paco | Summary | Calibration | FSR measurement setup | I've been meaning to attempt this
method to measure the arm cavity length
with negligible systematic error for calibration. |
|
|
17888
|
Fri Oct 6 13:51:15 2023 |
JC | Update | BHD | Posts used for the BHD OFI | Not a fanatic of the |
|
|
17887
|
Thu Oct 5 23:32:47 2023 |
Koji | Update | BHD | Posts used for the BHD OFI | The BHD OFI path consists of a few optical
components: (Attachment 1)
HWP ROtator
Thin |
6x |
|
17886
|
Thu Oct 5 13:29:58 2023 |
yuta | Update | SUS | Actuator calibrations after vertex coil driver upgrade | We calibrated actuators for
the first time after the vertex coil driver
upgrade. |
9x |
|
17885
|
Wed Oct 4 19:33:23 2023 |
Koji | Update | BHD | The optical fiber for the BHD/OMC assembly long enough | The optical fiber that Hiroki set up turned
out that long enough for the use in the new
HEPA optical bench. (Attachment 1) |
|
|
17884
|
Wed Oct 4 17:28:48 2023 |
Koji | Summary | BHD | Balance Mass Layout | I went to the Solidworks model of the ITMY
invac table and checked where the center
of mass is. |
|
|
17883
|
Wed Oct 4 10:36:03 2023 |
Murtaza | Update | SUS | Small Optic Suspension Simulation |
The triple suspensions (mode cleaners:
PRM, SRM) at the Livingston site have measured |
|
|
17882
|
Mon Oct 2 17:17:46 2023 |
Paco | Summary | DAQ | YEND and XEND acromag | I pulled out the YEND acromag chassis to
check how a connection is made. I unplugged
it and then opened it without removing any |
|
|
17881
|
Mon Oct 2 15:05:33 2023 |
Vittoria | Summary | PSL | PMC Alignment | [Rana, Vittoria]
At 3 pm, we did some PMC alignment,
and the transmission value went from 665 |
|
|
Draft
|
Thu Sep 28 16:45:54 2023 |
Murtaza | Update | | IFO ALIGNED (WITH SOME ISSUES) | [Rana, Radhika, Murtaza]
WFS Loop Debugging
- |
|
|
17879
|
Thu Sep 28 12:43:02 2023 |
Radhika | Update | | IFO ALIGNED (WITH SOME ISSUES) | While aligning today I realized the cavAlign
step sizes and step factors had not been
updated after the upgrade. |
|
|
17878
|
Thu Sep 28 11:30:13 2023 |
yuta | Update | SUS | Checking suspension damping loop polarity conventions | To further homogenize the suspensions,
we did the following changes.
- Turned on DECIMATION in |
|
|
17877
|
Thu Sep 28 11:27:24 2023 |
Radhika | Update | SUS | PRM/SRM damping/alignment | PRM/SRM OSEM input
calibration
- I realized |
|
|
17876
|
Wed Sep 27 21:11:36 2023 |
yuta | Update | SUS | Checking suspension damping loop polarity conventions | [Paco, Yuta]
We checked the polarity of suspension |
|
|
17875
|
Wed Sep 27 14:01:11 2023 |
yuta | Update | SUS | Whitening/dewhitening check at Yend | [Paco, Yuta]
We checked whitening and dewhitening |
|
|
17874
|
Tue Sep 26 14:07:00 2023 |
Murtaza | Update | | IFO ALIGNED (WITH SOME ISSUES) | [Paco, JC, Murtaza]
[WIP]
To fix the WFS loops, went through |
|
|
17873
|
Mon Sep 25 17:01:46 2023 |
Murtaza | Update | | IFO ALIGNED (WITH SOME ISSUES) | [JC, Paco, Radhika, Murtaza]
IFO ALIGNED
1. |
|
|
17872
|
Mon Sep 25 15:32:57 2023 |
JC | Update | IOO | IMC Alignment After C1Sus2 Crash This Morning | [Paco, Murtaza, JC]
Fixed C1SUS2 Crash from this morning
|
|
|
17871
|
Fri Sep 22 19:38:06 2023 |
Murtaza | Summary | Electronics | Vertex Electronics CDS Update | PRM
CHANNEL 1-4 (BS FEEDTHROUGH 1-3) |
|
|
17870
|
Fri Sep 22 19:31:24 2023 |
Koji | Update | SUS | Fixed IMC/IFO alignment screens | Fixed IMC/IFO alignment screens |
|
|
17869
|
Fri Sep 22 19:05:19 2023 |
Koji | Update | General | Power Outage Sept 21, 2023 ~9AM | Pumping configuration changed.
Now TP2 is backing TP1 and TP3 is pumping
annuli. |
|
|
17868
|
Fri Sep 22 18:26:08 2023 |
Radhika | Summary | Electronics | Vertex Electronics CDS Update | [Koji, Radhika, Murtaza]
All upgraded suspensions |
|
|
17867
|
Fri Sep 22 16:20:25 2023 |
Radhika | Summary | Electronics | Vertex Electronics CDS Update | Today we tried to debug the unreasonable
OSEM readings (see previous ELOG)
|
|
|
17866
|
Thu Sep 21 14:22:02 2023 |
Radhika | Summary | Electronics | Vertex Electronics CDS Update | I recalculated the scale factors between
OSEM sensor readings after/before the upgrade.
The expected factor is 8.64, although we |
|
|
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 |
|
|
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 |
|
|
17863
|
Wed Sep 20 17:28:17 2023 |
Radhika | Summary | Electronics | re: Filter Coefficient Loading Issue | I noticed the same issue today with C1RMS.txt,
when trying to update the coil actuation
gains for SRM. The filter changes were saved |
|
|
17862
|
Wed Sep 20 17:02:22 2023 |
Radhika | Summary | Electronics | Vertex Electronics ~ change in the actuator calibration | [Paco, Radhika]
IMC LOCKED
We |
|
|
17861
|
Wed Sep 20 14:04:58 2023 |
Radhika | Summary | Electronics | Vertex Electronics ~ change in the actuator calibration | MC1/MC2/MC3 damping
restored
I tweaked |
|
|
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. |
|
|
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). |
|
|
17858
|
Tue Sep 19 23:40:33 2023 |
Koji | Summary | Electronics | Vertex Electronics Wed Plan | Plan
for Sept 20, 2023
For morning people: |
|
|
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. |
|
|
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 |
|
|
17855
|
Tue Sep 19 19:21:10 2023 |
Radhika | Summary | Electronics | Vertex Electronics Transition ~ DAY 5 | [Koji, Radhika]
Update to the Foton/Load |
|
|
17854
|
Tue Sep 19 17:25:38 2023 |
Radhika | Summary | Electronics | Vertex Electronics Transition ~ DAY 5 | MCs
OSEM input / coil output gain tuning
Seeing
that MC1, MC2, MC3 OSEM readings looked reasonable |
|
|
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 |
|