| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17341
|
Tue Dec 6 15:59:46 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | [Radhika, Paco]
Paco suggested that alignment could
still be the primary reason why the XEND |
|
|
17340
|
Tue Dec 6 15:29:35 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | [Radhika, JC]
We retook transfer function measurements
of the XEND PDH servo box, this time setting |
|
|
17339
|
Tue Dec 6 13:09:44 2022 |
yuta | Update | BHD | c1cal model updates to support sensing matrix for BHD | [Anchal, Yuta]
We have modified c1cal model to support |
|
|
17338
|
Tue Dec 6 09:39:22 2022 |
yehonathan | Update | CDS | Another CDS crash | Around 9:30 we noticed IMC going out of
lock with MC1 swinging hard. It seems like
the coil output shut down. |
|
|
17337
|
Mon Dec 5 20:02:06 2022 |
Anchal | Update | ASC | IMC WFS heads electronic feasibility test for using for Arm ASC | I took transfer function measurement of
WFS2 SEG4 photodiode between 1 MHz to 100
MHz in a linear sweep. |
|
|
17336
|
Mon Dec 5 16:24:45 2022 |
Anchal | Update | ASC | IMC WFS servo diagnosis | Also reply to: 40m/17255
I ran the toggleWFSoffsets.py
script to generate a step response of the |
|
|
17335
|
Mon Dec 5 12:05:29 2022 |
Anchal | Update | CDS | c1sus2 all FE models crashed spontaneously | Just a few minutes ago, all models on FE
c1sus2 crashed. I'm attaching some important
files that can be helpful in investigating |
|
|
17334
|
Sun Dec 4 16:44:04 2022 |
Anchal | Update | ASC | IMC WFS Fixed for now | Today, I worked on WFS loop output matrix
for PIT DOFs.
I began with the matrix |
|
|
17333
|
Sun Dec 4 10:03:02 2022 |
Chris | Update | Optimal Control | IMC alignment controller testing | Another five
mode cleaner alignment controllers were tested
last night (remotely), running in tandem |
|
|
17332
|
Sat Dec 3 17:42:25 2022 |
Anchal | Update | ASC | IMC WFS Fixed for now | Today I did a lot of steps to eventually
reach to WFS locking stably for long times
and improving and keeping the IMC transmission |
|
|
17331
|
Sat Dec 3 10:13:56 2022 |
Anchal | Update | SUS | Low noise state | I've turned off HEPA fan and all lights
at:
PST: 2022-12-03 10:13:03.184705 |
|
|
17330
|
Fri Dec 2 15:59:55 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | I took a transfer function measurement
of the XEND PDH servo box, from servo input
to piezo output [Attachment 1]. The servo |
|
|
17329
|
Thu Dec 1 20:43:25 2022 |
Anchal | Summary | Calibration | Single arm cal with 5 lines | [Anchal, Paco]
We are doing this attempt again
in following configuration: |
|
|
17328
|
Wed Nov 30 20:01:08 2022 |
rana | Summary | Calibration | Single arm cal with 5 lines | I don't think you need to record the
excitations. They are just sine waves. The
amplitude you can read off from the OSC screen. |
|
|
17326
|
Wed Nov 30 18:27:07 2022 |
Paco | Update | General | Making the Jenne laser great again | [Paco]
I picked up the 950 nm laser that
Koji tested before and restored the Jenne |
|
|
17325
|
Wed Nov 30 14:25:34 2022 |
Tega | Update | CDS | AMD display driver installation | After swapping out the HDD on donatella,
I noticed that the display resolution was
stuck on 700x400 and could not be changed. |
|
|
17323
|
Wed Nov 30 10:48:10 2022 |
JC | Configuration | General | LED Instead of Incandescent Lights | All incondescent lightsbulbs have been
switched over to LED.
|
|
|
17322
|
Tue Nov 29 15:32:32 2022 |
Anchal | Update | BHD | c1hpc model updates to support double audio dither | Many changes have been done to c1hpc to
support dual demodulation at audio frequencies.
We moved away with ASS style of lockin setup |
|
|
17321
|
Tue Nov 29 11:38:37 2022 |
JC | HowTo | LSC | Lock Single Arm After MICH lock | I tried locking single arm this morning,
but I was unable to because the triggers
were set to lock strictly to MICH. Anchal |
|
|
17320
|
Mon Nov 28 20:14:27 2022 |
Anchal | Update | ASC | AS WFS proposed path to IMC WFS heads | In Attachment 1, I give a plan for the
proposed path of AS beam into the IMC WFS
heads to use them temporarily as AS WFS. |
|
|
17319
|
Mon Nov 28 18:21:50 2022 |
Paco | Summary | BHD | BH44 prep | I checked the LSC rack to evaluate what
we might need to generate 44 MHz rf in the
hypothetical case we go from BH55 to BH44 |
|
|
17318
|
Mon Nov 28 16:58:20 2022 |
Paco | Update | CDS | pypi package added | [Paco, Tega]
I added the pypi package "restoreEpics" |
|
|
17317
|
Mon Nov 28 16:53:22 2022 |
Anchal | Summary | BHD | F2A filters on LO1 LO2 AS1 and AS4 | [Paco, Anchal]
I changed the script in /opt/rtcds/caltech/c1/Git/40m/scripts/SUS/outMatFilters/createF2Afilters.py |
|
|
17316
|
Mon Nov 28 11:21:25 2022 |
JC | Update | PSL | PMC input beam alignment | C1:PSL-PMC_PMCTRANSPD was increased from
0.72 to 0.731 |
|
|
17315
|
Mon Nov 28 11:15:23 2022 |
Anchal | Update | CDS | Front ends DAC Kill (DK) got activated; restored FEs | [Anchal, Paco, Yehonathan, JC]
Last night at 9:15 pm PST (Nov
27th, 2022) some kind of disruption happened |
|
|
17314
|
Sun Nov 27 15:30:22 2022 |
Chris | Update | Optimal Control | IMC alignment controller testing | Five more mode cleaner alignment controllers
were tested this morning (remotely). These
were designed to run in tandem with the standard |
|
|
17313
|
Fri Nov 25 15:35:23 2022 |
Anchal | Update | SUS | Low noise state | Turned off HEPA at:
PST: 2022-11-25 15:34:55.683645
PST |
|
|
17312
|
Fri Nov 25 12:15:46 2022 |
Anchal | Update | VAC | Vacuum Gate valves restored | I came today to find that PSL shutter was
closed. I orginially thought some shimmer
obersvations are underway in the quiet state. |
|
|
17311
|
Thu Nov 24 15:37:45 2022 |
Anchal | Update | ASC | IMC WFS output matrix diagonalization effort | I tried following the steps and the method
I was using converged to same output matrix
upto 2 decimal points but there is still |
|
|
17310
|
Thu Nov 24 11:23:35 2022 |
Anchal | Update | SUS | Low noise state | I've turned off HEPA fan and all lights
at
PST: 2022-11-24 11:23:59.509949 PST |
|
|
17309
|
Wed Nov 23 20:58:23 2022 |
yuta | Summary | BHD | BHD_DIFF sensitivity to BS dither with MICH Offset with different BH55 demodulation phases | [Anchal, Paco, Yuta]
Attachment #1 is the same plot as |
|
|
17308
|
Wed Nov 23 17:28:39 2022 |
Yehonathan | Update | BHD | Some more calculations | Fields at the BHD BS. More on this later. |
|
|
17307
|
Wed Nov 23 17:21:44 2022 |
JC | Update | VAC | Interlocks may have been tripped due to N2 pressure loss | [Paco, JC]
While changing out one of the N2
tanks today, one of the fitting stripped. |
|
|
17306
|
Wed Nov 23 17:12:34 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | I tested the mixer by feeding it a 300
kHz signal sourced from a Moku:Go. I kept
the LO input the same - 231.25 kHz from |
|
|
17305
|
Wed Nov 23 16:34:33 2022 |
Koji | Update | CDS | New donatella testing | Let's use this entry to list of the
test results of new donatella.
Firefox |
|
|
17304
|
Wed Nov 23 16:12:00 2022 |
Tega | Update | CDS | I/O chassis parts inventory II | [Tega, JC]
We picked up the following I/O
chassis components from Downs CDS testing |
|
|
17303
|
Wed Nov 23 14:59:11 2022 |
Paco | Summary | BHD | BHD_DIFF sensitivity to BS dither with MICH Offset | [Yuta, Paco, Anchal]
We measured
(a) |
|
|
17302
|
Wed Nov 23 12:58:33 2022 |
Yehonathan | Update | BHD | Some more calculations | Changed the BHD BS transmissivity to 0.56.
Demodulation Phases
As was noted before. The LO phase |
|
|
17301
|
Wed Nov 23 11:06:08 2022 |
Anchal | Update | BHD | c1hpc and c1sus modified to add BS dither and demodulation option | c1hpc has option of dithering BS now (sending
excitation to BS LSC port to c1sus over IPC).
This is available for demodulating BHDC and |
|
|
17300
|
Tue Nov 22 20:46:11 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | [Paco, Anchal, Radhika]
We tried to debug why the XARM
green laser isn't catching lock with |
|
|
17299
|
Tue Nov 22 15:33:02 2022 |
Tega | Update | CDS | I/O chassis parts inventory | [Tega, JC]
We received the following I/O chassis
parts from LLO: |
|
|
17298
|
Tue Nov 22 10:29:31 2022 |
Anchal | Summary | SUS | ITMY Coil Strengths Balanced | I followed this
procedure to balance the coil strengths
on ITMY. The position sensor was created |
|
|
17297
|
Tue Nov 22 08:56:27 2022 |
JC | Update | PSL | PMC input beam alignment | [Paco, Anchal, JC]
C1:PSL-PMC_PMCTRANSPD ~ 0.715 this
morning, this was increased to ~0.730. There |
|
|
17296
|
Mon Nov 21 18:43:46 2022 |
yuta | Update | BHD | c1hpc and c1lsc modified to send BHD_DIFF and BHD_SUM | [Anchal, Yuta]
To send BHD signals from c1hpc after |
|
|
17295
|
Mon Nov 21 18:33:05 2022 |
Anchal | Update | SUS | MC2 OSEMs calibrated using MC_F | Repeated this for MC2 using the error measurement
technique mentioned in 40m/17286
using this notebook. |
|
|
17294
|
Mon Nov 21 17:44:00 2022 |
yuta | Summary | BHD | MICH BHD displacement sensitivity with AS55_Q and BHD_DIFF | [Paco, Yuta]
MICH displacement sensitivity was
compared under AS55_Q locking and BHD_DIFF |
|
|
17293
|
Mon Nov 21 15:16:12 2022 |
Tega | Update | CDS | workstation upgrade | We are currently working on donatella workstation
upgrade, which we are calling donatellaclone
for now. After installing Debian 11, we install |
|
|
17292
|
Mon Nov 21 14:55:58 2022 |
JC | Configuration | General | LED Instead of Incandescent Lights | Electrical came by today to see the lights.
The issue may be the switches, but they will
come by tomorrow to solve the issue. A couple |
|
|
17291
|
Mon Nov 21 11:52:50 2022 |
Radhika | Summary | Calibration | Single arm cal with 5 lines | [Paco, Radhika]
We set out to realign the YARM
AUX laser input into the arm cavity. |
|
|
17290
|
Mon Nov 21 09:13:31 2022 |
JC | Update | PSL | PMC input beam aligned again, IMC | [JC, Paco]
I attempted to align PMC Beam from
a transmission of 0.72. I failed to do so |
|