| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16950
|
Mon Jun 27 13:25:50 2022 |
Cici | Update | General | Characterizing the Transfer Loop | [Deeksha, Cici]
We first took data of a simple
low pass filter, and attempted to perform |
|
|
16951
|
Mon Jun 27 13:39:40 2022 |
Deeksha | Update | Electronics | Setting up the MokuLab | [Cici, Deeksha]
On Friday Cici and I set up the
Mokulab to take readings of our loop. The |
|
|
16952
|
Mon Jun 27 18:54:27 2022 |
yuta | Update | LSC | Modulation depths measurement using Yarm cavity scan | [Yehonathan, Yuta]
EDITED
by YM on 22:11 June 27, 2022 to correct for |
|
|
16953
|
Tue Jun 28 09:03:58 2022 |
JC | Update | General | Organizing and Cleaning | The plan for
the tools in 40m
As of right now, there are 4 tool |
|
|
16954
|
Tue Jun 28 14:24:23 2022 |
yuta | Update | BHD | BHD DC PD signals now also sent to c1lsc to circumvent IPC error | [JC, Yuta]
To circumvent IPC error sending
BHD DC PD signals from c1sus2 to c1lsc, DB9 |
|
|
16955
|
Tue Jun 28 16:26:58 2022 |
Cici | Summary | General | Vector fitting open loop transfer function/Audio cancellation of optical table enclosure | [Deeksha, Cici]
We attempted to use vectfit to
fit our earlier transfer function data, and |
|
|
16956
|
Tue Jun 28 16:59:35 2022 |
Paco | Summary | ALS | ALS beat allan deviation (XARM) | [Paco]
I took ~ 7 minutes of XALS beatnote
data with the XAUX laser locked to the XARM |
|
|
16957
|
Tue Jun 28 17:07:47 2022 |
Anchal | Update | Calibration | Added Beatnote channels in demodulation of c1cal | I added today demodulation of C1:LSC-BEATX/Y_FINE_I/Q
in the c1cal demodulation where different
degrees of freedom can be dithered. For McCal |
|
|
16958
|
Tue Jun 28 18:19:09 2022 |
Tomislav | Update | Electronics | Electronics noise | I measured electronics noise of WFSs and
QPD (of the WFS/QPD, whitening, ADC...) by
closing PSL and measuring the error signal. |
|
|
16959
|
Tue Jun 28 18:53:16 2022 |
rana | Summary | ALS | ALS beat allan deviation (XARM) | what's the reasoning behind using df/f_beat
instead of df/f_laser ?
|
|
|
16960
|
Tue Jun 28 22:27:11 2022 |
Yehonathan | Update | BHD | Measurement of input and output electronics noise | {Yuta, Yehonathan}
For MICH noise budgeting we measure
the input electronics noise which includes |
|
|
16961
|
Tue Jun 28 23:10:34 2022 |
Yehonathan | Update | BHD | Measurement of AS55 demod board conversion factor | {Yuta, Yehonathan}
We measured the AS55 demod board
conversion from the amplitude of a 55MHz |
|
|
16962
|
Wed Jun 29 14:28:06 2022 |
Paco | Summary | ALS | ALS beat allan deviation (XARM) | I guess it didn't make sense since
f_beat can be arbitrarily moved, but the
beat is taken around the PSL freq ~ 281.73 |
|
|
16963
|
Wed Jun 29 18:53:38 2022 |
rana | Update | Electronics | Electronics noise | this is just the CDS error signal, but
is not the electronics noise. You have to
go into the lab and measure the noise at |
|
|
16964
|
Thu Jun 30 17:19:55 2022 |
Deeksha | Summary | Electronics | Measured Transfer Functions of the Control Loop, Servo (OLTF); got Vectfit working | [Cici, Deeksha]
We were able to greatly improve
the quality of our readings by changing the |
|
|
16965
|
Thu Jun 30 18:06:22 2022 |
Paco | Update | ALS | Optimum ALS recovery - part I | [Paco]
In the morning I took some time
to align the AUX beams in the XEND table. |
|
|
16966
|
Thu Jun 30 19:04:55 2022 |
rana | Summary | PSL | PSL HEPA: How what when why | For the PSL HEPA, we wanted it to remain
at full speed during the vent, when anyone
is working on the PSL, or when there is a |
|
|
16967
|
Thu Jun 30 19:24:24 2022 |
rana | Summary | PEM | effect of nearby CES construction | For the proposed construction in the NW
corner of the CES building (near the 40m
BS chamber), they did a simulated construction |
|