| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16899
|
Tue Jun 7 19:40:45 2022 |
Anchal | Update | SUS | ITMY changed output matrix to disable use of UL coil | Since UL coil actuation is lost, we modified
the output matrix of ITMY to use only UR,
LR and LL face coils for POS, PIT and YAW |
|
|
16900
|
Wed Jun 8 16:03:12 2022 |
Koji | Update | VAC | Power Outage 220608: Vacuum Recovery | === Observation ===
TP1/2/3 failed. AUX RP
did not survive the power outage (of course)
=== |
|
|
16901
|
Wed Jun 8 16:33:26 2022 |
Koji | Update | General | Power Outage 220608: HVAC restored | I found the HVACs for the ends were off.
They were turned back on. |
|
|
16902
|
Wed Jun 8 16:57:46 2022 |
Koji | Update | IOO | Power Outage 220608: IMC restored | The IMC alignment was restored and the
IMC is nicely locking.
Once the vacuum level recovered |
|
|
16903
|
Wed Jun 8 18:16:20 2022 |
yuta | Update | SUS | ITMY ULCOIL mystery: Coil driver swap test | To see if the ULCOIL channel of the ITMY coil driver
is working or not, I swapped ITMY coil |
|
|
16904
|
Thu Jun 9 23:08:39 2022 |
rana | Update | SUS | ITMY ULCOIL mystery: Coil driver swap test | what was the result of the inductance measurement?
should be ~3.3 mH as measured from the flannge
or cable that goes to the flange from sat |
|
|
16905
|
Fri Jun 10 13:02:14 2022 |
yuta | Update | SUS | ITMY ULCOIL mystery: Coil driver swap test | ITMY ULCOIL was measured to have ~3.3 mH
as measured from the flange. RTFE 40m/16896
. |
|
|
16906
|
Fri Jun 10 13:52:22 2022 |
JC | Update | OPLEV Tables | ITMX, ITMY, and Vertex Table Beam Paths | I have at taken photos and added arrows
which signify the beam paths for ITMX,
ITMY, and Vertex Oplev tables. |
|
|
16907
|
Fri Jun 10 15:02:04 2022 |
yuta | Update | SUS | Servo gain sign flipped for MC1 WFS relief | The servo gain for MC1 in /opt/rtcds/caltech/c1/Git/40m/scripts/MC/WFS/reliefWFS
was flipped to account for COIL_GAIN flip
done in 40m/16898. |
|
|
16908
|
Fri Jun 10 15:04:23 2022 |
rana | Update | SUS | ITMY ULCOIL mystery: Coil driver swap test | Its good that the inductance test passed.
This means that the coil is OK. How does
the inspection photo look? This is the one |
|
|
16909
|
Fri Jun 10 20:11:46 2022 |
yuta | Update | ASC | Yarm ASS re-tuning in progress | [Anchal, Yuta]
We tried to re-tune Yarm ASS today. |
|
|
16910
|
Fri Jun 10 21:10:01 2022 |
yuta | Update | SUS | ITMY ULCOIL mystery: Coil driver swap test | We checked the photos we have, but we didn't
have the photos which show ULCOIL situation
clearly. |
|
|
16911
|
Mon Jun 13 20:26:09 2022 |
yuta | Update | ASC | Yarm ASS re-tuning in progress -part 2- | [Anchal, Yuta]
We are still in the progress of re-commissioning |
|
|
16912
|
Tue Jun 14 08:41:36 2022 |
JC | Update | OPLEV Tables | BS Oplev Table Sketch | [JC]
Lately, I have been working on
a 3d sketch of the BS OPLEV Table on SolidWorks. |
|
|
16913
|
Tue Jun 14 18:45:43 2022 |
Anchal | Update | SUS | LO2 lower magnets are stuck in coil, won't come off | [Anchal, Yuta]
In the weekend, I ran a free swing
test on all optics. During this test, LO2 |
|
|
16914
|
Tue Jun 14 19:34:06 2022 |
yuta | Update | SUS | Resonant frequency identification from the free swing test | [JC, Anchal, Yuta]
We are working on resonant frequency
idendification from the free swing test done |
7x |
|
16915
|
Tue Jun 14 20:57:15 2022 |
Anchal | Update | ASC | Yarm ASS working now | I finally got YARM AS to work today. It
is hard to describe what worked, I did a
lot of monkey business and some dirty offset |
|
|
16916
|
Wed Jun 15 07:26:35 2022 |
JC | Update | VAC | Beginning Pumpdown | [Jordan, JC]
Jordan and I went in to retore
the Vacuum System back to it's original |
|
|
16917
|
Wed Jun 15 15:03:41 2022 |
Koji | Update | PSL | PMC input beam aligned | The commissioners complained about the
PMC alignment. The PMC input beam was aligned.
It made the transmission improved from 0.72 |
|
|
16918
|
Wed Jun 15 15:07:07 2022 |
Koji | Update | SUS | LO2 SUS stuck fixed | I checked the state of the LO2 suspension.
I found that the coil driver Enable
Mon was all red. |
|
|
16919
|
Wed Jun 15 15:45:37 2022 |
yuta | Update | SUS | LO1 LLCOIL now working, it was loose connection | We tracked the issue of LO1 LLCOIL not
actuating LO1, and found that the DB9 cable
from the coil driver to the sat amp was loose. |
|
|
16920
|
Wed Jun 15 17:03:17 2022 |
yuta | Update | SUS | ITMY ULCOIL issue solved, loose connection in sat amp box | [Anchal, Yuta]
We fixed the issue of ITMY ULCOIL |
|
|
16921
|
Wed Jun 15 17:12:39 2022 |
Cici | Summary | General | Preparation for AUX Loop Characterization | [Deeksha, Cici]
We went to the end Xarm station
and looked at the green laser setup and electronics. |
|
|
16922
|
Thu Jun 16 15:29:03 2022 |
yuta | Update | PSL | PMC input beam aligned again, IMC | [Paco, Tomislav, Yuta]
Somehow, when we were trying to measure |
|
|
16923
|
Thu Jun 16 17:40:15 2022 |
Yehonathan | Update | BHD | Comparison of MICH OLTF model with measurement | I made some progress in modeling MICH loop.
Putting all the LSC and SUS filters
together with the MICH Finesse model I constructed |
|
|
16924
|
Thu Jun 16 18:23:15 2022 |
Paco | Configuration | BHD | Recovering LO beam in BHD DCPDs | [Paco, Yuta]
We recovered the LO beam on the
BHD port. To do this, we first tried reverting |
|
|
16925
|
Thu Jun 16 18:30:07 2022 |
Anchal | Update | SUS | New diagonalized input matrices applied | I used the same fre swing data to diagnolize
input matrices of following optics:
MC1, MC2, MC3 |
|
|
16926
|
Thu Jun 16 19:49:48 2022 |
Cici | Update | General | Using the SR785 | [Deeksha, Cici]
We used a python script to collect
data from the SR785 remotely. The SR785 is |
|
|
16927
|
Fri Jun 17 12:05:32 2022 |
Yehonathan | Update | BHD | Comparison of MICH OLTF model with measurement | I should write down what I didn't include
for completeness:
1. AA filters |
|
|
16928
|
Fri Jun 17 13:07:08 2022 |
Koji | Update | BHD | Comparison of MICH OLTF model with measurement | I'm curious why the actual OLTF included
the 60Hz comb...? It is undesirable to have
such structure in the OLTF around the UGF |
|
|
16929
|
Fri Jun 17 16:22:21 2022 |
yuta | Update | LSC | Actuator calibration of BS. ITMX, ITMY, updated MICH displacement spectra from c1cal | Following what we have done in 2013 (40m/8242),
actuator calibration was done using MICH. |
6x |
|
16930
|
Mon Jun 20 19:46:04 2022 |
Tomislav | Update | ASC | Simulation plots | In the attachment please find IMC ASC simulation
plots. Let me know what you think, if you
want some other plots, and if you need any |
|
|
16931
|
Tue Jun 21 08:36:50 2022 |
Anchal | Update | SUS | Diagonalized input matrices for LO1, freeSwing on ITMY and ITMX | Over the weekend, I ran freeSwing test
with sequential kicks in specific DOFs for
LO1, ITMY, ITMX. LO1 results were successfully |
|
|
16932
|
Tue Jun 21 14:17:50 2022 |
yuta | Configuration | BHD | BHD DCPDs re-routed to c1sus2 | After discussing with Anchal, we decided
to route BHD related PD signals directly
to ADC of c1sus2, which handles our new suspensions |
|
|
16933
|
Tue Jun 21 14:59:22 2022 |
Cici | Summary | General | AUX Transfer Function Loop Exploration | [Deeksha, Cici]
We learned about the auxillary
laser control loop, and then went into the |
|
|
16934
|
Tue Jun 21 18:41:46 2022 |
Tomislav | Update | ASC | Simulation plot | In the attachment please find a comparison
of error signals of simulation and reality.
For C1:IOO-WFS1/2_PIT_IN1 excess signal ('belly') |
|
|
16935
|
Tue Jun 21 21:17:16 2022 |
yuta | Update | BHD | RTS models for BHD added but PCIE error remaining | [Anchal, Yuta]
RTS
models for BHD homodyne phase control (c1hpc) |
|
|
16937
|
Tue Jun 21 22:22:37 2022 |
Tomislav | Update | ASC | Plots | In the attachment please find a comparison
of error signals of simulation and reality
after including air turbulence as input noise. |
|
|
16938
|
Wed Jun 22 14:44:03 2022 |
Anchal | Update | BHD | Fixed DC error in c1su2, added new library model for suspensions | The 0x2000 error in c1su2 happens whenever
we make it and install it as the default
data acquisition rates are too much in the |
|
|
16939
|
Wed Jun 22 17:04:06 2022 |
Deeksha | Summary | Electronics | Characterising the AUX control loop | [Cici, Deekha]
Setup loop to measure transfer
function of control loop - the aim is |
|
|
16940
|
Wed Jun 22 18:55:31 2022 |
yuta | Update | LSC | Daily alignment work; POY trouble solved | [Koji, Yuta]
I found that Yarm cannot be locked |
|
|
16941
|
Wed Jun 22 19:41:13 2022 |
Koji | Update | LSC | Daily alignment work; POY trouble solved | Before the final measurement of the DC
values for the transmissions, I aligned the
PMC. This made the PMC trans increased from |
|
|
16942
|
Thu Jun 23 15:05:01 2022 |
Water Monitor | Update | Upgrade | Water Bottle Refill | 22:05:02 UTC Jordan refilled his water
bottle at the water dispenser in the control
room. |
|
|
16943
|
Fri Jun 24 12:13:16 2022 |
JC | Update | IOO | WFS issues | [Yuta, JC]
It seems that early this morning
MC got very misaligned. Yuta was able to |
|
|
16944
|
Fri Jun 24 13:29:37 2022 |
Yehonathan | Update | General | OSEMs from KAGRA | The box was given to Juan Gamez (SURF)
|
|
|
16945
|
Fri Jun 24 17:16:59 2022 |
Paco | Update | ALS | XAUX cable in control room | [JC, Paco]
We took the long BNC cable that
ran from ETMX to ETMY and ran it from ETMX |
|
|
16946
|
Sat Jun 25 14:29:48 2022 |
Anchal | Update | IOO | WFS issues | This issue is very weird and still unresolved.
Without WFS loops, we'll have to realign
IMC often and we might loose IMC alignment |
|
|
16947
|
Sat Jun 25 20:23:59 2022 |
Koji | Update | IOO | WFS issues | I could run the WFS servo (6dofs) for more
than 15min by flipping the sign for the MC2
Pit and WFS1 Yaw. (See attachments) |
|
|
16948
|
Sat Jun 25 22:18:41 2022 |
Tomislav | Update | ASC | Simulation and reality comparisons | In the attachment please find plots comparing
controller output, local damping output,
and error signals. |
|
|
16949
|
Mon Jun 27 12:32:45 2022 |
yuta | Update | IOO | WFS issues fixed | |
|