| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
13986
|
Tue Jun 19 14:08:37 2018 |
pooja | Update | Cameras | CCD calibration using LED1050E | Aim: To measure the optical power from
led using a powermeter.
Yesterday Gautam drilled a larger |
|
|
13985
|
Tue Jun 19 00:19:00 2018 |
gautam | Update | ASC | POP status check | Motivation:
I want to use the QPD at
POP, calibrate it into physical units, and |
|
|
13984
|
Mon Jun 18 19:47:02 2018 |
gautam | Update | General | MICH actuator calibration | Summary:
The actuator (pendulum) gains for
the Beam Splitter and the two ITMs were measured |
|
|
13983
|
Mon Jun 18 16:57:54 2018 |
Koji | Update | PSL | Optics on AS table | Of course, many (but no all) of the optics
were custom-ordered back in ~2000. |
|
|
13982
|
Mon Jun 18 15:59:17 2018 |
johannes | Update | PSL | Optics on AS table |
Quote:
|
|
|
13981
|
Mon Jun 18 14:32:42 2018 |
gautam | Update | PSL | Optics on AS table | Yesterday, I moved the following optics:
Lens in front of AS110
PD.
BS splitting light between |
|
|
13980
|
Mon Jun 18 12:07:03 2018 |
Koji | Update | General | Chiara new USB 4TB DIsk | The initial local backup with rsync was
done. Now
the new 4TB disk is (supposed to be) automatically |
|
|
13979
|
Mon Jun 18 11:12:23 2018 |
Kira | Summary | PEM | finishing up work at the lab | Since I am finishing my job at the lab,
I have stored all my electronics in a box
(attachment 1) and placed it under the table |
|
|
13978
|
Mon Jun 18 10:34:45 2018 |
johannes | Update | Computer Scripts / Programs | running comsol job on optimus | I'm running a comsol job on optimus
in a tmux session named cryocavs. Should
be done in less than 24 hours, judging by |
|
|
13977
|
Sun Jun 17 14:20:35 2018 |
Koji | Update | General | Chiara new USB 4TB DIsk | I have connected a 4TB disk to chiara via
a USB-SATA adapter. This disk has been recognized
as /dev/sde. A GUID Partition Table (GPT), |
|
|
13976
|
Sat Jun 16 20:57:59 2018 |
Jon | Update | General | PRC modescan attempt | Here's a Finesse modeling of what
we're expecting to observe with this
test. It uses Gautam's base |
|
|
13975
|
Sat Jun 16 01:25:29 2018 |
Koji | Update | General | PRC modescan attempt | The PRC FSR is, of course, very close to
twice of our f1 moudlation frequency (11MHz
x 2 = 22MHz) . |
|
|
13974
|
Sat Jun 16 00:26:48 2018 |
gautam | Update | General | PRC modescan attempt | [Jon, Gautam, Johannes]
We did the following today:
Dither align arms such |
|
|
13973
|
Fri Jun 15 14:22:05 2018 |
gautam | Update | ALS | BeatMouth PDFR measurement | I did the measurement with the BeatMouth
open today. Main changes:
Directly pipe the RF output |
|
|
13972
|
Fri Jun 15 09:51:55 2018 |
pooja | Update | Cameras | Developing neural network | Aim : To develop a neural network on simulated
data.
I developed a python code that |
|
|
13971
|
Fri Jun 15 09:14:42 2018 |
Steve | Update | General | Oplev sums | Oplev sums of 240 days.
|
|
|
13970
|
Fri Jun 15 08:09:15 2018 |
Steve | Bureaucracy | General | cleaning up at the PSL enclousure | The cabeling was cleaned up a little bit
yesterday morning. The upper back side is
still massy. |
|
|
13969
|
Fri Jun 15 00:53:21 2018 |
gautam | Update | LSC | Calibrated MICH spectrum | Using the numbers from the sensing measurement,
I calibrated the measured in-loop MICH spectrum
from Tuesday night into free-running displacement |
|
|
13968
|
Thu Jun 14 22:45:05 2018 |
johannes | Update | General | AUX beam SRC alignment | [Jon, Gautam, Johannes]
Jon spent some time trying to align
the AUX beam to the SRC today, I got to the |
|
|
13967
|
Thu Jun 14 19:30:12 2018 |
gautam | Update | General | IFO alignment restored | All optics have been re-aligned. Jon/Johannes
will elog about the work today. |
|
|
13966
|
Thu Jun 14 18:09:24 2018 |
gautam | Update | LSC | Reliable and repeatable 1f DRMI locking | I finally analyzed the sensing measurement
I ran on Tuesday evening. Sensing responses
for the DRMI DOFs seems consistent with what |
|
|
13965
|
Thu Jun 14 15:31:18 2018 |
johannes | Update | CDS | EX wiring confusion | Bad wording, sorry. Should have been channels
in excess of ETMX controls. I'll add
the others to the list as well. |
|
|
13964
|
Thu Jun 14 15:24:32 2018 |
Steve | Update | PEM | ADC DAC In Line Test Boards are in | We have 6 of these boards now in cabinet
E7
|
|
|
13963
|
Thu Jun 14 15:21:58 2018 |
gautam | Update | Computer Scripts / Programs | /cvs/cds Backup in danger | I think this is because /cvs/cds is getting
too big. lsblk reveals:
|
|
|
13962
|
Thu Jun 14 13:29:51 2018 |
gautam | Update | General | PSL shutter closed, all optics misaligned | [jon, gautam]
Jon is doing some characterization
of the AUX laser setup for which he wanted |
|
|
13961
|
Thu Jun 14 10:41:00 2018 |
gautam | Update | CDS | EX wiring confusion | Do we really have 2 free ADC channels at
EX now? I was under the impression we had
ZERO free, which is why we wanted to put |
|
|
13960
|
Thu Jun 14 00:46:09 2018 |
rana | Update | IOO | WFS HEAD SW confusion | its painful, but you and I should probably
take these out, bypass the switches
and use them with fixed gain; |
|
|
13959
|
Thu Jun 14 00:40:42 2018 |
gautam | Update | LSC | PRCL loop shape anomaly | don't use IN_1/IN_2: recall pizza meeting
from a few weeks back: use IN1/EXC + Al-Gebra
|
|
|
13958
|
Wed Jun 13 23:23:44 2018 |
johannes | Update | CDS | EX wiring confusion | It's true.
I went through the wiring of the
c1auxex crate today to disentangle the pin |
|
|
13957
|
Wed Jun 13 22:07:31 2018 |
gautam | Update | ALS | BeatMouth PDFR measurement | Summary:
Neither |
|
|
13956
|
Wed Jun 13 18:08:36 2018 |
keerthana | Update | | Finesse code for cavity scan | The unit mentioned in the x-axis was wrong.
So I have remade the graphs. The point where
frequency equals to zero is actually the |
|
|
13955
|
Wed Jun 13 12:21:09 2018 |
gautam | Update | ALS | PDFR laser checkout | I want to use the Fiber Coupled laser from
the PDFR
system to characterize the response of |
|
|
13954
|
Wed Jun 13 11:59:03 2018 |
keerthana | Update | elog | command line enabled code for frequency scanning | I have modified the code for frequency
scanning and have made it completely command
line enabled. The code is written in python. |
|
|
13953
|
Wed Jun 13 11:17:40 2018 |
gautam | Update | LSC | PRCL loop shape anomaly | Attachment
#1 shows the measured |
|
|
13952
|
Wed Jun 13 01:02:40 2018 |
gautam | Update | LSC | Reliable and repeatable 1f DRMI locking | [koji,
gautam]
With Koji's help, I got repeatable |
|
|
13951
|
Tue Jun 12 19:27:25 2018 |
pooja | Update | Cameras | CCD calibration | Today I made the led (1050nm) circuit inside
a box as given in my previous elog. Steve
drilled a 1mm hole in the box as an aperture |
|
|
13950
|
Tue Jun 12 15:32:15 2018 |
Steve | Bureaucracy | General | Salvaged junk from Xend | Koji's collection of Yend components
put away. I cleaned up the Xend bench
today. |
|
|
13949
|
Tue Jun 12 14:47:37 2018 |
gautam | Bureaucracy | General | Unlabelled components from EX moved to SP table and labelled | Steve mentioned two unlabelled optics were
found at EX, relics from the Endtable upgrade.
One was a 1" 45 deg |
|
|
13948
|
Tue Jun 12 03:22:25 2018 |
gautam | Update | LSC | AUX laser shuttered | I worked a bit on recovering the DRMI locking
again tonight. I decided to shutter the AUX
laser on the PSL table at least until I figured |
|
|
13947
|
Mon Jun 11 23:22:53 2018 |
gautam | Update | CDS | EX wiring confusion | [Koji,
gautam]
Per |
|
|
13946
|
Mon Jun 11 22:46:24 2018 |
Koji | Update | IOO | WFS HEAD SW confusion | The unfortunate discovery today was that
the attenuator switches on the IMC WFS heads
are actually assigned to individual segments, |
|
|
13945
|
Mon Jun 11 22:18:18 2018 |
keerthana | Update | elog | Comparison of the analytical and finesse values of TMS and FSR. | Oopss !! I made a mistake while taking
the values from my notes. Sorry.
|
|
|
13944
|
Mon Jun 11 22:05:03 2018 |
Koji | Update | elog | Comparison of the analytical and finesse values of TMS and FSR. | > The percentage error which I found
out =[(analytical value - finesse value)/analytical
value]*100 |
|
|
13943
|
Mon Jun 11 19:16:49 2018 |
keerthana | Update | elog | Comparison of the analytical and finesse values of TMS and FSR. | The percentage error which I found out
=[(analytical value - finesse value)/analytical
value]*100 |
|
|
13942
|
Mon Jun 11 18:49:06 2018 |
gautam | Update | CDS | c1lsc dead again | Why is this happening so frequently now?
Last few lines of error log:
|
|
|
13941
|
Mon Jun 11 18:10:51 2018 |
Koji | Update | elog | Comparison of the analytical and finesse values of TMS and FSR. | Hmm? What is the definition of the percentage
error? I don't obtain these numbers from
the given values. |
|
|
13940
|
Mon Jun 11 17:18:39 2018 |
pooja | Update | Cameras | CCD calibration | Aim: To calibrate CCD of GigE using LED1050E.
The following table shows some
of the specifications for LED1050E as given |
|
|
13939
|
Mon Jun 11 13:55:33 2018 |
keerthana | Update | General | Project Updates | As of now, I have made the codes needed
to sweep the marconi frequency for taking
the cavity scan data, the photo diode at |
|
|
13938
|
Mon Jun 11 11:45:13 2018 |
keerthana | Update | elog | Comparison of the analytical and finesse values of TMS and FSR. |
Quantity
|
|
|
13937
|
Sun Jun 10 15:04:33 2018 |
pooja | Update | Cameras | Developing neural network | Aim: To develop a neural network in order
to correlate the intensity fluctuations in
the scattered light to the angular motion |
|