| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17204
|
Fri Oct 21 16:15:10 2022 |
yuta | Summary | BHD | LO phase locking with BH55 audio dither trials | [Paco, Yuta]
We are still struggling with locking
LO phase in MICH or ITM single bounce with |
|
|
17171
|
Mon Oct 3 15:19:05 2022 |
Paco | Update | BHD | LO phase noise and control after violin mode filters | [Anchal, Paco]
We started the day by taking a
spectrum of C1:HPC-LO_PHASE_IN1, |
|
|
17520
|
Thu Mar 23 17:47:53 2023 |
Paco | Update | NoiseBudget | LO phase noise budget (BH55_Q) | I drafted a calibrated LO Phase noise budget
using diaggui whose template is saved under
/opt/rtcds/caltech/c1/Git/40m/measurements/BHD/LO_PHASE_cal_nb.xml |
|
|
17514
|
Mon Mar 20 20:27:30 2023 |
yuta | Update | BHD | LO phase noise contribution in MICH BHD | [Paco, Yuta]
MICH was locked with balanced homodyne
readout with LO phase locked using BH55_Q |
|
|
17511
|
Tue Mar 14 18:44:39 2023 |
yuta | Update | BHD | LO phase noise measurements in ITMX single bounce, MICH and FPMI | [Anchal, Yuta]
We have measured LO phase noise in |
|
|
17547
|
Tue Apr 18 19:29:43 2023 |
yuta | Update | BHD | LO phase noise measurements in ITMX single bounce, MICH and FPMI | [Anchal, Yuta]
We have repeated LO phase noise measurement |
|
|
17167
|
Fri Sep 30 20:18:55 2022 |
Paco | Update | BHD | LO phase noise with different actuation points | [Paco, Koji]
We took lo phase noise spectra
actuating on the for different optics-- LO1, |
|
|
17560
|
Mon Apr 24 19:11:20 2023 |
Koji | Summary | BHD | LO/MI(DARM) signal strength comparison between the configurations | Yuta and I had a discussion last week about
the signal strength between the configurations.
Here are some naive calculations. |
|
|
17565
|
Wed Apr 26 11:27:49 2023 |
Paco | Summary | BHD | LO/MI(DARM) signal strength comparison between the configurations with finesse | I'm
checking Koji + Yuta's not-so-naive calculations
using finesse. |
|
|
17994
|
Tue Nov 28 17:24:44 2023 |
Radhika | Update | General | LO/POP beams aligned | [Paco, Vittoria, Murtaza, Radhika]
LO/POP alignment
We |
7x |
|
16572
|
Tue Jan 11 12:19:12 2022 |
Anchal | Summary | BHD | LO1 Input Matrix Diagonalization performed. | The frree swinging test was successful.
I ran the input matrix diagonalization code
(scripts/SUS/InMAtCalc/sus_diagonalization.py) |
|
|
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. |
|
|
17133
|
Tue Sep 6 17:39:40 2022 |
Paco | Update | SUS | LO1 LO2 AS1 AS4 damping loop step responses | I tuned the local damping gains for LO1,
LO2, AS1, and AS4 by looking at step responses
in the DOF basis (i.e. POS, PIT, YAW, and |
|
|
16562
|
Mon Jan 10 14:52:51 2022 |
Anchal | Summary | BHD | LO1 OSEMs roughly calibrated and noise measured | I used the open light level output of 908
for ITMX side OSEM from 40m/16549
to roughly calibrate cts2um filter module |
|
|
17487
|
Wed Mar 1 19:18:18 2023 |
Paco | Update | SUS | LO1 dewhitening | [Paco, Anchal]
Today we invested some time in
the DW filters for LO1 supension. We discovered |
|
|
17488
|
Thu Mar 2 10:54:25 2023 |
Paco | Update | SUS | LO1 dewhitening | We added the DB9 short connectors to all
coil drivers in the BHD suspensions and updated
FM9-FM10 for LO1, LO2, AS1, AS4, SR2, PR2 |
|
|
16567
|
Mon Jan 10 18:36:41 2022 |
Anchal | Summary | BHD | LO1 free swinging test set to trigger | LO1 is set to go through a free swinging
test at 1 am tonight. We have used this script
(scripts/SUS/InMatCalc/freeSwing.py) reliably |
|
|
16851
|
Fri May 13 14:26:00 2022 |
JC | Update | Alignment | LO2 Beam | [Yehonathan, JC]
Yehonathan and I attempted to align
the LO2 beam today through the BS chamber |
|
|
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. |
|
|
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 |
|
|
2411
|
Mon Dec 14 13:08:33 2009 |
Koji | Update | Treasure | LOCKSTARS | Good job guys. What I did was
saying "I don't know", "Maybe", |
|
|
2413
|
Mon Dec 14 14:16:14 2009 |
Alberto | Update | Treasure | LOCKSTARS |
|
|
|
5661
|
Thu Oct 13 20:25:32 2011 |
Katrin | Update | Green Locking | LPF transfer function YARM | It is a 4th order filter with
cut of frequency of 120 kHz.
|
|
|
7076
|
Thu Aug 2 03:06:57 2012 |
Sasha | Update | Simulations | LS Plant (LSP) is officially ONLINE | My ls plant compiled!! The
RCG code can now be found in |
|
|
4689
|
Wed May 11 13:54:32 2011 |
steve | Update | LSC | LSC power supplies | Aux- rack _1Y2 is just behind 1Y3
It contains Kepco Analoge DC power supplies
for +- 5, 15 and 24V |
|
|
4523
|
Thu Apr 14 01:03:43 2011 |
Koji | Update | LSC | LSC Campaign ~ Status | Target:
To lock the Michelson with the new RF/LSC
Status |
|
|
5210
|
Fri Aug 12 16:42:51 2011 |
Yoichi | Configuration | LSC | LSC Feed Forward Compensator | I've been working on adding feed forward (FF)
paths to our LSC code.
So far, I've made a basic feed forward functionality |
|
|
11445
|
Fri Jul 24 20:32:15 2015 |
ericq | Update | Electronics | LSC LO distribution box power button replaced | As happened with the RF distribution box
in the IOO rack a while back, the shiny blue
power button in the LSC LO distribution box |
|
|
5473
|
Tue Sep 20 02:21:10 2011 |
Koji | Update | LSC | LSC MEDM screen cleaning up | I have made some cleaning up of the LSC-related
MEDM screens.
- LSC overview screen: ADC OVFL and |
|
|
10390
|
Thu Aug 14 18:31:45 2014 |
ericq | Update | LSC | LSC Modeling Update | Based on the game plan, I have created
a slew of updated pretty plots about our
signals and loops. |
7x |
|
4982
|
Mon Jul 18 14:39:53 2011 |
Jenne | Update | Computers | LSC PD chans acquired | There's too much tromping around, so I'm
not going to actually measure PRC length
right now, but I did set some channels to |
|
|
4951
|
Thu Jul 7 02:23:59 2011 |
Jenne | Summary | LSC | LSC Whitening Filters have been fit | I have fit all of the LSC whitening filters
using vectfit4.m
All the data is in my folder ..../users/jenne/LSC_WhiteningTest_29June2011/ |
|
|
4955
|
Thu Jul 7 15:34:44 2011 |
Jenne | Summary | LSC | LSC Whitening Filters have been fit |
|
|
|
11607
|
Wed Sep 16 23:07:06 2015 |
rana | Update | Electronics | LSC Whitening board: LP filters added, pictures taken | I added the 0.1 uF and 47 nF caps
that I mentioned so that we can now bypass
the AA filters for these channels. (mistakenly |
|
|
9509
|
Sat Dec 21 01:54:04 2013 |
Koji | Configuration | LSC | LSC Whitening for the DCPDs/CM servo replaced | The previous LSC whitening filters for
the DCPDs were in an unknown state (although
the transfer functions were actually measured |
|
|
9136
|
Tue Sep 17 18:44:29 2013 |
Masayuki | Update | LSC | LSC calibration screen | I update the LSC calibration screen. This
screen is for real time calibration of each
DOF with using error signal and control signal. |
|
|
9149
|
Fri Sep 20 22:49:10 2013 |
Masayuki | Update | LSC | LSC calibration screen |
|
|
|
9158
|
Wed Sep 25 08:11:01 2013 |
Masayuki | Summary | LSC | LSC calibration screen |
|
|
|
9169
|
Fri Sep 27 13:55:11 2013 |
Masayuki | Update | LSC | LSC calibration screen | I added the DAQ channel to
all output of calibration servo. The name
of channels are C1CAL_(plant name)_W_OUT_DQ. |
|
|
9172
|
Fri Sep 27 21:01:50 2013 |
Masayuki | Update | LSC | LSC calibration screen |
I fixed the XARM and YARM real
time calibration servo. |
|
|
9174
|
Mon Sep 30 11:33:15 2013 |
rana | Update | LSC | LSC calibration screen |
|
|
|
381
|
Fri Mar 14 15:52:07 2008 |
rob | Configuration | LSC | LSC code change |
I've edited the LSC code to send different
signals to the ASS box. Now, instead of |
|
|
386
|
Thu Mar 20 16:06:27 2008 |
rob | Configuration | LSC | LSC code change |
I changed the LSC code again. I noticed
that when turning off the LSC (e.g., going |
|
|
1457
|
Tue Apr 7 21:39:57 2009 |
Yoichi | Configuration | Computers | LSC code recompiled with a fix for denormalization problem | This is not my work but I will put it for
the record.
|
|
|
1460
|
Wed Apr 8 18:18:33 2009 |
rana | Configuration | Computers | LSC code recompiled with a fix for denormalization problem | Below is the link to the anti-denormalization
technique that Rolf and Alex implemented
at the sites,
|
|
|
3995
|
Tue Nov 30 12:25:08 2010 |
josephb | Update | CDS | LSC computer to chassis cable dead | Problem:
We
seemed to have a broken fiber link for use |
|
|
9312
|
Wed Oct 30 00:02:25 2013 |
Jenne | Update | LSC | LSC demod boards need some thought | As we are meditating on things to look
at for PRMI + 2 arms, Rana brought up the
question of the demod board situation. |
|
|
9316
|
Wed Oct 30 03:33:17 2013 |
Rana | Update | LSC | LSC demod boards need some thought |
|
|
|
14313
|
Wed Nov 21 09:59:26 2018 |
gautam | Update | LSC | LSC feedforward block diagram | Attachment
#1 is a block diagram depicting
the pathway by which the vertex DOF control |
|
|
14326
|
Fri Nov 30 19:37:47 2018 |
gautam | Update | LSC | LSC feedforward block diagram | I wanted to set up an RTCDS model to understand
this problem better. Attachment #1 is the
simulink diagram of the signal flow. The |
|