ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
10058
|
Wed Jun 18 15:25:06 2014 |
Nichin | Update | Electronics | BBPD Transimepedence plot | Motivation: |
|
|
10059
|
Wed Jun 18 16:44:55 2014 |
Manasa | Update | Electronics | BBPD installed for BEATX detection | This BBPD is the spare that we pulled out
and is installed for ALSX-PSL beat note detection. |
|
|
10060
|
Wed Jun 18 17:38:14 2014 |
Jenne | Update | Computer Scripts / Programs | autolocker running again | The MC autolocker is once again running
on Ottavia, with the nohup command.
It was hanging for a long time (at |
|
|
10061
|
Wed Jun 18 18:00:36 2014 |
ericq | Update | Computer Scripts / Programs | control room bashrc change | Some time ago, Rana changed the PS1 prompt
codes on the control room computers. However,
the exit codes of commands weren't being |
|
|
10062
|
Wed Jun 18 18:16:26 2014 |
Nichin | Update | Electronics | Changes to the PD frequency response measurement system | [Nichin,
Eric G, Koji]
Continuing |
|
|
10063
|
Wed Jun 18 19:30:28 2014 |
Jenne | Update | Computer Scripts / Programs | Rossa having a better day | I have modified the /etc/default/grub
file, so that we're loading up |
|
|
10064
|
Wed Jun 18 21:37:11 2014 |
Koji | Update | IOO | MC REFL investigation | [Jenne Koji]
We decided to check the situation
of the REFL MC beam path. |
|
|
10065
|
Wed Jun 18 21:53:48 2014 |
Koji | Update | Electronics | Changes to the PD frequency response measurement system | Not "hot" current but "photo"
current. Is this my bad!?
It was me who told Nichin that the |
|
|
10066
|
Wed Jun 18 22:34:44 2014 |
ericq | Update | IOO | caget frusrtation |
|
|
|
10067
|
Wed Jun 18 22:47:48 2014 |
ericq | Update | CDS | Raspberry pi added to martian network | I set up a raspberry pi on the martian
network, to be hooked up to a frequency counter
for tracking ALS beatnotes. |
|
|
10068
|
Thu Jun 19 00:02:48 2014 |
Jenne | Update | LSC | PRMI+2 arms recovery | Arms locked in comm and diff with ALS.
PRMI locked with REFL33 I&Q while arms
off resonance. Having trouble reducing CARM |
|
|
10069
|
Thu Jun 19 10:39:22 2014 |
steve | Update | safety | surf safety training |
Andres Medina and Andrew "Harry"
Hall received 40m specific safety training. |
|
|
10070
|
Thu Jun 19 12:10:18 2014 |
Akhil | Update | Electronics | Gain plots to Characterize UFC-6000 RF Frequency Counter | The
goal is to characterize the Mini-Circuits
RF FC (Model UFC-6000) by plotting |
|
|
10071
|
Thu Jun 19 14:12:45 2014 |
steve | Update | safety | optical table scans |
PSL, AP, ETMY and ETMX optical
tables were scanned for stay beam. |
|
|
10072
|
Thu Jun 19 14:41:00 2014 |
Manasa | Update | PSL | ISS disabled | I would like to measure the switching time
of the AOM. So I have disconnected the modulation
input to the AOM that comes from the ISS. |
|
|
10073
|
Thu Jun 19 14:52:20 2014 |
not ericq | Update | Computer Scripts / Programs | control room bashrc change |
|
|
|
10074
|
Thu Jun 19 16:49:15 2014 |
rana | Update | Computer Scripts / Programs | autolocker running again | We've noticed that the caget/caput
and cdsutils take a long time to return the
command prompt. The following two ping commands |
|
|
10075
|
Thu Jun 19 17:11:52 2014 |
steve | Update | PEM | it is warmer today | The PSL HEPA was running at 30VAC-variac.
It is 1 degree C warmer than usual. The HEPA
fan motor turned up to 60 V |
|
|
10076
|
Thu Jun 19 17:28:19 2014 |
Steve | Update | PSL | window device is ready for test | The window is at the north west corner
of the PSL enclosure.
The 1 mm thick BK7 window is AR coated |
|
|
10077
|
Thu Jun 19 22:04:23 2014 |
ericq | Update | Computer Scripts / Programs | caget/caput now return in reasonable time | I think I've fixed the caget/caput issue.
Rana's observation that pinging the IP directly
was faster than pinging the hostname set |
|
|
10078
|
Fri Jun 20 09:46:49 2014 |
manasa | Update | IOO | MC WFS servo turned ON | The IMC stayed locked last night, but with
a high REFL ~3.0. I found the WFS servo OFF;
so went ahead and enabled it. (Did somebody |
|
|
10079
|
Fri Jun 20 11:41:18 2014 |
Nichin | Update | Electronics | Transimpedence measurement-BBPD | EDIT:
Please ignore the following data. The revised |
|
|
10080
|
Fri Jun 20 11:43:30 2014 |
ericq | Update | Computer Scripts / Programs | Restarting ELOG | Manasa let me know that the ELOG was down,
and that she used the normal restart procedure,
but then all entries were gone. |
|
|
10081
|
Fri Jun 20 14:42:57 2014 |
steve | Update | SUS | vac illuminators turned off | |
|
|
10082
|
Fri Jun 20 16:36:44 2014 |
Nichin | Update | Electronics | RF cables removed | [Nichin, Eric G]
As mentioned in Elog 10062, we found
RF cables running between demodulators in |
|
|
10083
|
Fri Jun 20 18:33:53 2014 |
Harry | Update | General | Razorblade Beam Analysis Setup | Eric Q and I set up the optical configuration
for razorblade beam analysis on SP table
for future use. |
|
|
10084
|
Fri Jun 20 19:07:44 2014 |
rana | Update | Computer Scripts / Programs | op340m DNS | I had forgotten to fix the DNS setup
on op340m and so our slow, perl, PID loops
for the laser were not running well (and |
|
|
10085
|
Fri Jun 20 19:09:23 2014 |
Koji | Update | Electronics | Transimpedence measurement-BBPD | Oh,
nice! This must be a new technique to have
a higher transimpedance by breaking the PD. |
|
|
10086
|
Sat Jun 21 01:25:12 2014 |
Nichin | HowTo | Electronics | PD Trasimpedence measurement theory | Here
is the logic that I have been using to calculate
the transimpedence of PDs. Please let me |
|
|
10087
|
Sat Jun 21 01:46:28 2014 |
Nichin | Update | Electronics | BBPD Transimepedence plot | Sorry for
the late update Koji.
There |
|
|
10088
|
Mon Jun 23 20:58:38 2014 |
ericq | Update | CDS | Bootfest 2014! | This afternoon, I wanted to start the nominal
alignment/adjustment steps for evening time
locking, but got sucked into CDS frustrations. |
|
|
10089
|
Mon Jun 23 21:16:14 2014 |
Nichin | Update | Electronics | Transimpedence measurement-BBPD | [Nichin,
Koji]
Today |
|
|
10090
|
Tue Jun 24 01:07:56 2014 |
Jenne | Update | LSC | Bootfest 2014! | Still no real luck getting the beam back
aligned to the IFO.
Koji and I tried a few minutes of |
|
|
10091
|
Tue Jun 24 13:02:54 2014 |
Manasa | Update | PSL | Ringdown PD installed |
|
|
|
10092
|
Tue Jun 24 13:04:49 2014 |
Harry, Manasa | Update | General | Razorblade Beam Analysis Setup | Harry will update this elog with details
about his beam waist measurements for the
old NPRO on the SP table. |
|
|
10093
|
Tue Jun 24 16:52:43 2014 |
Nichin | Update | Electronics | An RF cable re-installed |
|
|
|
10094
|
Tue Jun 24 18:35:53 2014 |
Jenne | Update | LSC | Still no beam going to IFO | [Jenne, EricQ, Manasa]
We are still not able to get the
beam to go to the interferometer, which is |
|
|
10095
|
Tue Jun 24 22:46:15 2014 |
ericq | Update | Computer Scripts / Programs | op340m crons |
|
|
|
10096
|
Wed Jun 25 01:18:24 2014 |
Akhil | Update | elog | Weekly Update | Plans
for the Week:
Phase and noise characterization |
|
|
10097
|
Wed Jun 25 02:01:21 2014 |
Nichin | Summary | General | Weekly Report | Attached is the weekly work plan / equipment requirement
/ lab expert's presence needed for |
|
|
10098
|
Wed Jun 25 09:16:52 2014 |
Harry | Update | General | Razorblade Measurements | Purpose
To use a razorblade to measure beam
waist at multiple points along the optical |
|
|
10099
|
Wed Jun 25 09:17:33 2014 |
Harry, Manasa | Update | General | Razorblade Beam Analysis Setup |
|
|
|
10100
|
Wed Jun 25 09:30:44 2014 |
Harry | Update | General | Weekly Update | See attached weekly update |
|
|
10101
|
Wed Jun 25 14:52:22 2014 |
Andres Medina | Update | elog | Placing a lens between the steering mirrors and another lens between the second steering mirror and the cavity | I was asked to calculate the lenses
that we need in order to obtained a Gouy
phase close to 90 degrees between the two |
|
|
10102
|
Wed Jun 25 17:13:10 2014 |
Nichin | Update | Electronics | Laser power check - PDFR system | [Nichin, Manasa]
I wanted to make sure Alex's system
of Diode laser + laser controller + optical |
|
|
10103
|
Wed Jun 25 17:49:36 2014 |
Harry | Update | General | Razorblade Analysis Pt. 2 | Reconfigured razorblade analysis setup
on the PD table as per instructions. Used
it to collect data to calculate beam waist |
|
|
10104
|
Wed Jun 25 19:29:19 2014 |
Akhil | Update | Electronics | Analog-to-Digital Converter | I have been trying to use an ADC
with the Raspberry Pi to be able to measure
the phase difference between FC input and |
|
|
10105
|
Wed Jun 25 20:45:04 2014 |
Nichin | Update | Electronics | AS55 Bodeplot | [Nichin]
I |
|
|
10106
|
Fri Jun 27 10:09:10 2014 |
Harry | Update | General | Beam Waist Measurement | Purpose
To use a razorblade to measure beam
waist at four points along the optical axis, |
|
|
10107
|
Fri Jun 27 12:54:13 2014 |
Akhil | Update | Electronics | Gain plots of UFC-6000 for 0.1s Sampling Rate | Finally, the 0.1s sampling rate of
the frequency counter(FC) has been achieved.
For this I had to : |
|