| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16082
|
Fri Apr 23 18:00:02 2021 |
gautam | Update | PSL | HEPA speed lowered | I will upload some plots later - but in
summary, I set the HEPA speed to ~40%. I
used (i)IMC transmission RIN, (ii) Arm cavity |
|
|
16083
|
Fri Apr 23 19:26:58 2021 |
Koji | Update | PSL | HEPA speed lowered | I believe that there is an internal setting
for the minimum flow, so the flow is not
linear ("0%" is not zero), but |
|
|
16141
|
Fri May 14 17:45:05 2021 |
rana | Update | PSL | HEPA speed raised | The PSL was too hot, so I turned on the
south HEPA on the PSL. The north one was
on and the south one was off (or so slow |
|
|
16142
|
Sat May 15 12:39:54 2021 |
gautam | Update | PSL | NPRO tripped/switched off | The NPRO has been off since ~1AM this morning
it looks like. |
|
|
16144
|
Tue May 18 00:52:38 2021 |
rana | Update | PSL | HEPA speed raised | Looks like the fan lowered the temperature
as expected. Need to get a few more days
of data to see if its stabilized, or if that's |
|
|
16145
|
Tue May 18 20:26:11 2021 |
rana | Update | PSL | HEPA speed raised | Fluke. Temp fluctuations
are as usual, but the overall temperature
is still lower. We ought to put some temperature |
|
|
16400
|
Thu Oct 14 09:28:46 2021 |
Yehonathan | Update | PSL | PMC unlocked | PMC has been unlocked since ~ 2:30 AM.
Seems like the PZT got saturated. I moved
the DC output adjuster and the PMC locked |
|
|
16401
|
Thu Oct 14 11:25:49 2021 |
Yehonathan | Update | PSL | PMC unlocked | {Yehonathan, Anchal}
I went to get a sandwich around
10:20 AM and when I came back BS was moving |
|
|
16886
|
Thu Jun 2 20:05:37 2022 |
yuta | Configuration | PSL | IMC input power recovered to 1W, some alignment works | [Paco, Yuta]
We have |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
17047
|
Fri Jul 29 20:21:11 2022 |
Koji | Update | PSL | FSSSlow/MCAutolocker issue (docker) | MCAutolocker/FSSSlow are not properly documented
and not properly working.
Tidy up the script and documentation, |
|
|
17049
|
Sat Jul 30 10:38:12 2022 |
Anchal | Update | PSL | FSSSlow/MCAutolocker issue (docker) | The FSSSlow script was not properly documented
and it was not working, so I had to use one
that I knew worked from CTN. This scripts |
|
|
17050
|
Sat Jul 30 12:48:18 2022 |
Koji | Update | PSL | FSSSlow/MCAutolocker issue (docker) | > it only starts working when C1:IOO-MC_LOCK
is 1 and C1:PSL-FSS_SLOWLOOP is 1.
- OK. Your new MCAutolocker does |
|
|
17057
|
Thu Aug 4 11:28:22 2022 |
Anchal | Update | PSL | FSSSlow/MCAutolocker issue (docker) | Added C1:IOO-MC_LOCK
to ALConfigMC.yml which solved the isse
with FSS Slow. We should tune the FSS Slow |
|
|
17065
|
Mon Aug 8 14:47:10 2022 |
rana | Update | PSL | FSSSlow/MCAutolocker issue (docker) | can't we just go back to the old python
script that was working for many years, and
tested? I imagine that as soon as someone |
|
|
17201
|
Thu Oct 20 14:13:42 2022 |
yuta | Summary | PSL | PMC and IMC sideband frequencies measured | I measured the sideband frequencies for
PMC and IMC lock (to use it for Mariner PMC
and IMC design). |
|
|
17271
|
Wed Nov 16 11:56:21 2022 |
Radhika | Update | PSL | PMC input beam aligned again, IMC | [Yuta, JC, Radhika]
PMC input beam was aligned again,
bringing transmission from 0.70 to ~0.75. |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
17390
|
Tue Jan 10 16:06:58 2023 |
yuta | Summary | PSL | PMC transmission dropped to 0.68 | [JC, Paco, Yuta]
It seems like PMC transmission
(C1:PSL-PMC_PMCTRANSPD) dropped to ~0.68 |
|
|
17426
|
Thu Jan 26 16:07:05 2023 |
yuta | Summary | PSL | PMC aligned, now PMC transmission is 0.7 | PMC aligned (Attachment #1).
Over the past month, PMC transmission
is actually slowly growing from 0.68 to 0.70 |
|
|
17433
|
Mon Jan 30 10:59:15 2023 |
JC | Summary | PSL | PMC aligned, now PMC transmission is 0.7 | PMC hit a drop around mid-day on Saturday
and has been going down since. As of now,
C1:PSL-PMC_PMCTRANSPD - 0.664 |
|
|
113
|
Fri Nov 16 18:46:49 2007 |
steve | Bureaucracy | PSL | MOPA was turned off & on | The "Mohana" boys scouts and their parents
visited the 40m lab today.
The laser was turned off for their safety.
|
|
|
2951
|
Wed May 19 14:36:46 2010 |
Aidan | HowTo | Phase Camera | Phase Camera algorithm and stuff | I had a think about the algorithm
we might use for the phase camera measurement.
MATLAB has an fft function that will allow |
|
|
2955
|
Thu May 20 10:06:56 2010 |
Aidan | HowTo | Phase Camera | Phase Camera- raw data video | |
|
|
3096
|
Tue Jun 22 09:45:21 2010 |
Aidan, Joe, Razib | Update | Phase Camera | Current phase camera setup. Seeing Acoustic beat | We've set up a preliminary test bed
for the phase camera. It simply uses a HeNe
that is split into two beams. One is frequency |
|
|
3097
|
Tue Jun 22 13:38:13 2010 |
Koji | Update | Phase Camera | Current phase camera setup. Seeing Acoustic beat | 1. In terms of the AOM:
How much beam power is incident |
|
|
3102
|
Wed Jun 23 12:28:34 2010 |
Razib | Summary | Phase Camera | Weeekly Summary | This past week I have completed the following
tasks:
|
|
|
3146
|
Wed Jun 30 12:20:49 2010 |
Razib | Update | Phase Camera | Weekly update | This week I have completed following tasks:
1. Worked out the analytical expressions
for the amount of power of the DC and oscillatory |
|
|
3167
|
Wed Jul 7 12:17:36 2010 |
Razib | Update | Phase Camera | Weekly update | I have completed the following tasks:
1. Find a simplified calibration
of the exposure time for the current He-Ne |
|
|
3187
|
Fri Jul 9 12:07:26 2010 |
Razib | Update | Phase Camera | Weekly update | Here are some more details about the current
phasecam setup. We are using a He-Ne laser
setup |
|
|
3213
|
Wed Jul 14 10:00:14 2010 |
josephb | Update | Phase Camera | Work near 1Y2 yesterday | Razib and I were attempting to get the
output of a photodiode (PD55A in this case)
recorded, so that we could independently |
|
|
3215
|
Wed Jul 14 11:51:48 2010 |
Razib | Update | Phase Camera | Work near 1Y2 yesterday |
|
|
|
3217
|
Wed Jul 14 12:12:03 2010 |
Razib | Summary | Phase Camera | Weekly update | This week I was mainly interested in investigating
the noise source at the phase camera. So
having this issue in mind, my activities |
|
|
3221
|
Wed Jul 14 18:09:50 2010 |
josephb, razib | Update | Phase Camera | Some cleanup behind 1Y2 rack of phasecamera electronics | We made an attempt at cleaning up the phase
camera setup electronics.
We have moved a portion of the electronics |
|
|
3258
|
Wed Jul 21 12:20:58 2010 |
Razib | Update | Phase Camera | Weekly update | This past week I have worked on the following:
1. Setting up the infrastructure
to do noise analysis: We added a temporary |
|
|
3309
|
Wed Jul 28 13:06:47 2010 |
Razib | Update | Phase Camera | | Attached are some calculation that I did
previously for the phasecamera setup. This
shows the nature of the beat signal that |
|
|
3360
|
Wed Aug 4 16:52:59 2010 |
Razib, Aidan | Update | Phase Camera | Sideband power measurement (updated) | Aidan and I made some attempt to measure
the power of the sidebands so that we can
calculate our expected signal strength. |
|
|
3411
|
Thu Aug 12 16:52:02 2010 |
Razib | Update | Phase Camera | Sideband power measurement (updated) | I made some measurement of the SCR (signal
to contrast ratio) from the signal from the
EOM and the AOM. |
|
|
3412
|
Thu Aug 12 17:10:07 2010 |
Koji | Update | Phase Camera | Sideband power measurement (updated) | This sounds very relieving although this
could be a lower bound of the number.
Why didn't you use the output on the |
|
|
3413
|
Thu Aug 12 17:28:28 2010 |
Razib | Update | Phase Camera | Sideband power measurement (updated) |
|
|
|
50
|
Thu Nov 1 19:53:02 2007 |
Andrey Rodionov | Bureaucracy | Photos | Tobin's picture | |
|
|
51
|
Thu Nov 1 19:53:34 2007 |
Andrey Rodionov | Bureaucracy | Photos | Robert's photo | |
|
|
52
|
Thu Nov 1 19:54:22 2007 |
Andrey Rodionov | Bureaucracy | Photos | Rana's photo | |
|
|
53
|
Thu Nov 1 19:55:03 2007 |
Andrey Rodionov | Bureaucracy | Photos | Andrey's photo | |
|
|
54
|
Thu Nov 1 19:55:59 2007 |
Andrey Rodionov | Bureaucracy | Photos | Andrey, Tobin, Robert - photo | |
|
|
55
|
Thu Nov 1 19:58:07 2007 |
Andrey Rodionov | Bureaucracy | Photos | Steve and Tobin's picture | |
|