| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2576
|
Mon Feb 8 14:13:03 2010 |
Alberto | Update | ABSL | PLL Characterization | Lately I've been trying to improve the
PLL for the AbsL experiment so that it could
handle larger frequency steps and thus speed |
|
|
2577
|
Mon Feb 8 14:56:17 2010 |
Alberto | Update | ABSL | Suddenly a much better alignment of PRC | I just aligned PRM and locked PRC and I
noticed that SPOB is much higehr than it
used to be. It's now about 1800, vs 1200 |
|
|
2578
|
Mon Feb 8 15:01:46 2010 |
rob | Update | ABSL | Suddenly a much better alignment of PRC |
|
|
|
2579
|
Mon Feb 8 15:41:51 2010 |
Alberto | Update | ABSL | Suddenly a much better alignment of PRC |
|
|
|
2581
|
Tue Feb 9 09:07:06 2010 |
Alberto | Update | ABSL | PLL Characterization |
|
|
|
2582
|
Tue Feb 9 10:10:58 2010 |
Alberto | Update | ABSL | back to analog | I want to try to do the measurement with
the network analyzer used as local oscillator,
instead of the Marconis that I'm using now. |
|
|
2679
|
Thu Mar 18 10:46:51 2010 |
Koji | Update | ABSL | PLL reconstructed | Last night (Mar 17) I checked the PLL
setup as Mott have had some difficulty to
get a clean lock of the PLL setting. |
|
|
2680
|
Thu Mar 18 12:27:56 2010 |
Alberto | Update | ABSL | PLL reconstructed |
|
|
|
2681
|
Thu Mar 18 13:40:35 2010 |
Koji | Update | ABSL | PLL reconstructed | We use the current PLL just now, but the
renewal of the components are not immediate
as it will take some time. Even so we need |
|
|
2684
|
Thu Mar 18 21:42:26 2010 |
Koji | Update | ABSL | PLL reconstructed | I checked the setup further more.
I replaced the PD from
NewFocus 1GHz one to Thorlabs PDA255.
|
|
|
2696
|
Mon Mar 22 22:11:26 2010 |
Mott | Update | ABSL | PLL reconstructed |
It looks like the PLL drifted
alot over the weekend, and we couldn't get |
|
|
2697
|
Mon Mar 22 23:37:32 2010 |
Mott | Update | ABSL | PLL reconstructed |
We have managed to lock the PLL to
reasonable stability. The RF input is attenuated |
|
|
2703
|
Tue Mar 23 18:44:46 2010 |
Mott | Update | ABSL | PLL reconstructed |
After realigning and getting
the lock today, I tried to add in the SR785 |
|
|
4832
|
Fri Jun 17 16:05:07 2011 |
kiwamu | Update | ABSL | LightWave out of MOPA box | [Suresh / Kiwamu]
We did the following things
: |
|
|
4840
|
Mon Jun 20 11:38:49 2011 |
kiwamu | Update | ABSL | I-P curve of LightWave M126-1064-700 | The
I-P curve of the LightWave NPRO (M126-1064-700),
which was taken out from the MOPA box, was |
|
|
4841
|
Mon Jun 20 13:48:25 2011 |
Koji | Update | ABSL | I-P curve of LightWave M126-1064-700 | Hmm. Was the current within the operating
range? (i.e. Is it a 700mW laser or a 1W
one?) |
|
|
4842
|
Mon Jun 20 16:44:02 2011 |
steve | Update | ABSL | I-P curve of LightWave M126-1064-700 |
Put the serial numbers into
the elog. So we can identify the laser and |
|
|
4855
|
Wed Jun 22 15:24:10 2011 |
kiwamu | Update | ABSL | got a laser controller for LightWave | Peter
King came over to the 40m with a laser controller
and gave it to us. |
|
|
4872
|
Thu Jun 23 22:59:45 2011 |
kiwamu | Update | ABSL | I-P curve of LWE | The |
|
|
4874
|
Fri Jun 24 00:13:24 2011 |
kiwamu | Update | ABSL | beam profile measurement of LWE | The
beam profile of the LWE (LightWave Electronics)
NPRO was measured. |
|
|
4877
|
Fri Jun 24 07:49:23 2011 |
steve | Update | ABSL | I-P curve of LWE with serial numbers |
|
|
|
4917
|
Thu Jun 30 03:26:40 2011 |
kiwamu | Update | ABSL | status update | Status
update of the absolute length (ABSL) measurement: |
|
|
4923
|
Thu Jun 30 14:11:55 2011 |
kiwamu | Update | ABSL | a photo of ABSL setup on the AP table | Here
is a picture of the latest ABSL setup at
the east part of the AP table. |
|
|
4925
|
Thu Jun 30 21:00:20 2011 |
kiwamu | Update | ABSL | fine alignment done | (Just a quick report)
The
fine alignment of the ABSL laser injection |
|
|
4939
|
Tue Jul 5 16:09:54 2011 |
kiwamu | Update | ABSL | some photos for ABSL setup | Here
I show two photos of the latest ABSL (ABSolute
Length measurement) setup. |
|
|
4940
|
Tue Jul 5 17:38:46 2011 |
kiwamu | Update | ABSL | ABSL laser frequency-locked | In this
past weekend the ABSL laser was successfully |
|
|
5079
|
Mon Aug 1 04:08:24 2011 |
kiwamu | Update | ABSL | Arm length measurement : cavity kick technique | I made some
attempts to measure the current length of |
|
|
5095
|
Tue Aug 2 16:55:21 2011 |
rana | Update | ABSL | Arm length measurement : cavity kick technique |
|
|
|
5117
|
Thu Aug 4 09:42:19 2011 |
Koji | Update | ABSL | ABSL Laser shutter closed | The shutter of the ABSL laser is closed
for the vent work. |
|
|
8257
|
Fri Mar 8 12:57:57 2013 |
Annalisa | Update | ABSL | BS installed on ITMY table | Sendhil and I installed the S polarized
BS on the ITMY table to steer the NPRO beam
through the AR wedge and align it to the |
|
|
8258
|
Fri Mar 8 13:42:35 2013 |
Jenne | Update | ABSL | BS installed on ITMY table | Re: POY beam reduction.
We are able to lock the Yarm with
the beam / gain as it is. I had thought |
|
|
8303
|
Mon Mar 18 12:02:12 2013 |
Annalisa | Configuration | ABSL | ABSL setup for g-factor measurement of PRC | Motivations
The ABSL
technique has been already used in the past
to measure the |
|
|
8361
|
Wed Mar 27 21:53:21 2013 |
Annalisa | Update | ABSL | Beat note of ATF auxiliary laser | After measuring the beat note, the "Alberto"
NPRO auxiliary laser has been moved from
the PSL table to the POY table. Its beam |
|
|
8369
|
Thu Mar 28 23:00:30 2013 |
Annalisa | Update | ABSL | Beat note of ATF auxiliary laser found |
The beat note for the ATF lab laser
has been found. |
|
|
8495
|
Fri Apr 26 10:50:07 2013 |
Annalisa | Update | ABSL | ATF laser on PSL | The ATF NPRO auxiliary laser has been moved
on the PSL table. All the optics for beat
note measurement are in place and alignment |
|
|
677
|
Wed Jul 16 09:27:17 2008 |
steve | Update | ALARM | PSL-FSS_RMTEMP alarm is false | Morning alarm sound is good for people who
does not drink coffee.
Our 40m alarm is on every morning.
|
|
|
1615
|
Thu May 21 12:58:32 2009 |
rob | Configuration | ALARM | PEM count-half disabled | I've disabled the alarm for PEM_count_half,
using the mask in the 40m.alhConfig file.
We can't do anything about it, and it's just |
|
|
2549
|
Tue Jan 26 20:18:32 2010 |
rana | Configuration | ALARM | op540m: alarms and BLRMS and StripTool restored | I turned the StripTool and ALARMS and BLRMS
back on on op540m. Looks like it has been
rebooted 5 days ago and no one turned these |
|
|
11241
|
Thu Apr 23 23:07:23 2015 |
Dugolini | Frogs | ALARM | laptops warning | Please!
|
|
|
11893
|
Sun Dec 20 23:23:54 2015 |
ericq | Update | ALARM | Rats. | A small rat / large mouse just ran through
the control room. Ugh. |
|
|
11901
|
Wed Dec 23 16:15:47 2015 |
rana | Omnistructure | ALARM | fire alarm | Fire alarm went off several minutes ago.
Talked to security and they said there was
no fire. It beeped twice again just now. |
|
|
12216
|
Mon Jun 27 15:26:03 2016 |
Steve | Omnistructure | ALARM | fire alarm test | The fire alarm came on around 15:05
for about 2-3 minutes. We all left
the lab and counted heads. I called |
|
|
14294
|
Wed Nov 14 14:35:38 2018 |
Steve | Update | ALARM | emergency calling list for 40m Lab | It is posted at the 40m
wiki with Gautam' help. Printed copies
posted around doors also. |
|
|
14863
|
Fri Sep 6 16:38:24 2019 |
aaron | Update | ALARM | Alarm noise from smart-ups machine under workstation? | There was an alarm sound from the Smart-UPS
2200 sitting under the workstation. I see
that the 'replace battery' light |
|
|
13157
|
Tue Aug 1 19:23:06 2017 |
rana | Update | ALS | X - arm alignment | Rana, Naomi
We dither locked the X arm and
then aligned the green beam to it using the |
|
|
13177
|
Wed Aug 9 12:35:47 2017 |
gautam | Update | ALS | Fiber ALS | Last week, we were talking about reviving
the Fiber ALS box. Right now, it's not
in great shape. Some changes to be made: |
|
|
13180
|
Wed Aug 9 19:21:18 2017 |
gautam | Update | ALS | ALS recovery | Summary:
Between frequent MC1 excursions,
I worked on ALS recovery today. Attachment |
|
|
13204
|
Mon Aug 14 16:24:09 2017 |
gautam | Update | ALS | Fiber ALS | Today, I borrowed the fiber microscope
from Johannes and took a look at the fibers
coupled to the PDs. The PD labelled " |
|
|
13222
|
Wed Aug 16 20:24:23 2017 |
gautam | Update | ALS | Fiber ALS | Today, with Johannes' help, I cleaned
the fiber tips of the photodiodes. The effect
of the cleaning was dramatic - see Attachments |
|
|
13229
|
Fri Aug 18 23:59:53 2017 |
gautam | Update | ALS | X Arm ALS lock | [ericq, gautam]
I was just getting the
IFO aligned, and single arm lock going, when |
|