| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14039
|
Thu Jul 5 17:33:36 2018 |
keerthana, sandrine | Update | elog | Lights not working |
N/S ARM FL.
N/S ARM
INC.
These two lights inside
the 40m-lab are not working. |
|
|
14040
|
Thu Jul 5 17:58:04 2018 |
keerthana, sandrine | Update | elog | | (Analisa, Sandrine, Keerthana)
Today Annalisa helped us to understand
the new set up used to make the frequency |
|
|
14057
|
Thu Jul 12 14:06:39 2018 |
keerthana | Update | elog | Finesse and Analytical solution - Comparison | I tried to compare the cavity scan data
we get from the Finesse simulation and that
we expect from the Analytical solution. The |
|
|
14336
|
Fri Dec 7 19:42:47 2018 |
rana | Frogs | elog | can't upgrade DokuWiki because of PHP / SL7 | All of our wikis (except the 40m one which
unfortunately got turned into ligo.org mess)
use DokuWiki. This now has an auto-upgrade |
|
|
15274
|
Fri Mar 13 12:48:47 2020 |
Larry Wallace | Update | elog | Cert Renewal | Updated the cert in /etc/httpd/ssl.
The new cert is good until March 12, 2022. |
|
|
16041
|
Fri Apr 16 11:31:00 2021 |
rana | Update | elog | elog stuck ~10 AM today | found it unresponsive. Restarted fine using
procedure documented in wiki |
|
|
8606
|
Tue May 21 17:03:45 2013 |
Steve | Update | endtable upgrade | enclosure tops are sealed |
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|
8628
|
Thu May 23 12:02:48 2013 |
Steve | Update | endtable upgrade | ETMY - oplev | Temporary oplev in place. The spot
on the qpd is still big. My two lens solution
did not work. |
|
|
8655
|
Thu May 30 11:10:00 2013 |
Steve | Update | endtable upgrade | ETMY - oplev |
|
|
|
8660
|
Thu May 30 20:45:53 2013 |
Annalisa | Update | endtable upgrade | ETMY - oplev |
|
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|
8662
|
Fri May 31 11:15:01 2013 |
Annalisa | Update | endtable upgrade | ETMY - Mode Matching for green - new calculation | Since the beam waist after the Faraday
had changed since the last time I measured
it (maybe alignment changed a bit), I made |
|
|
8669
|
Tue Jun 4 10:44:13 2013 |
Steve | Update | endtable upgrade | PI pzt holders are ready | The PI pzt holders are back from the shop.
They are numbered 1, 2 & 3 and machined
to match. |
|
|
8685
|
Thu Jun 6 09:58:13 2013 |
Steve | Update | endtable upgrade | enclosure to chamber connection |
Thin
wall connector from McMCarr#55275K25 |
|
|
8746
|
Tue Jun 25 19:18:07 2013 |
gautam | Configuration | endtable upgrade | plan of action for PZT installation | This entry is
meant to be a sort of inventory check and |
|
|
8800
|
Wed Jul 3 21:19:04 2013 |
gautam | Configuration | endtable upgrade | plan of action for PZT installation | This is an update on the situation
as far as PZT installation is concerned.
I measured the required cable (PZT driver |
|
|
8804
|
Mon Jul 8 13:45:19 2013 |
gautam | Configuration | endtable upgrade | Driver board verification | With the help of an expansion card, I
verified that the + 15V and + 24V
from the eurocrate in the slot I've identified |
|
|
8823
|
Wed Jul 10 22:41:06 2013 |
gautam | Configuration | endtable upgrade | PZT Driver Board | I
did the following with the |
|
|
8827
|
Thu Jul 11 09:15:10 2013 |
Steve | Update | endtable upgrade | ETMY optable grounded | ETMY optical table top was grounded to
the ETMY chamber through 1 Mohms this morning.
I also strain releifed |
|
|
8845
|
Mon Jul 15 11:51:18 2013 |
gautam | Configuration | endtable upgrade | DAC at 1Y4-Max Output and Power Spectrum | Summary:
I measured the maximum output of
the DAC at 1Y4 as well as its power spectrum. |
|
|
8846
|
Mon Jul 15 13:51:17 2013 |
Koji | Configuration | endtable upgrade | DAC at 1Y4-Max Output and Power Spectrum | We need the unit of the voltage power spectrum
density to be V/sqrt(Hz). |
|
|
8848
|
Mon Jul 15 15:54:20 2013 |
gautam | Configuration | endtable upgrade | DAC at 1Y4- Power Spectrum -with the right units |
|
|
|
8852
|
Mon Jul 15 17:20:43 2013 |
Jenne | Configuration | endtable upgrade | DAC at 1Y4- Power Spectrum -with the right units | Those 'peaks' for the oscillations seem
ridiculously broad. I think you should
look again, really quickly, with smaller |
|
|
8853
|
Mon Jul 15 17:59:31 2013 |
gautam | Configuration | endtable upgrade | DAC at 1Y4- Power Spectrum -6.4kHz bandwidth |
|
|
|
8857
|
Tue Jul 16 14:51:09 2013 |
gautam | Configuration | endtable upgrade | AI Board-D000186-Modified notches | I tried shifting the notch frequencies
on the D000186-revision D board given to
me by Koji. The existing notches were at |
|
|
8873
|
Thu Jul 18 19:09:08 2013 |
gautam | Configuration | endtable upgrade | QPD Calibration for PZT Calibration | Summary
I have been working on setting up
a QPD which can eventually be used to calibrate |
|
|
8874
|
Thu Jul 18 20:20:52 2013 |
gautam | Configuration | endtable upgrade | First mirror glued to PZT and mounted in modified mounts |
Yesterday,
I mounted the first PZT in one of the modified |
|
|
8875
|
Thu Jul 18 21:12:58 2013 |
gautam | Configuration | endtable upgrade | AI Board-D000186-All channels modified |
I carried some further modifications
and tests to the AI Board. Details and observations |
|
|
8877
|
Thu Jul 18 23:34:40 2013 |
gautam | Configuration | endtable upgrade | Coarse adjustment of PZT axes orientation in mount | I have
managed to orient the PZT in the mount such
that its axes are approximately aligned with |
|
|
8883
|
Fri Jul 19 22:51:40 2013 |
gautam | Configuration | endtable upgrade | Second mirror glued to PZT and mounted |
I |
|
|
8884
|
Fri Jul 19 23:35:31 2013 |
gautam | Configuration | endtable upgrade | Preliminary Calibration of PZT | I recalibrated
the QPD today as I had shifted its position
a little. I then identified the linear range |
|
|
8892
|
Mon Jul 22 17:17:30 2013 |
annalisa | Update | endtable upgrade | End table picture | |
|
|
8896
|
Tue Jul 23 00:51:46 2013 |
Koji | Update | endtable upgrade | End table picture | The spot on the IPANG QPD was checked.
The spot is higher than the center and South
side of the lens. |
|
|
8910
|
Tue Jul 23 19:37:08 2013 |
Annalisa | Update | endtable upgrade | End table picture |
|
|
|
8912
|
Tue Jul 23 20:41:40 2013 |
gautam | Configuration | endtable upgrade | Full range calibration and installation of PZT-mounted mirrors | Given
that the green beam is to be used as the |
|
|
8930
|
Sun Jul 28 19:39:04 2013 |
Annalisa | Update | endtable upgrade | Picture | Yend table picture updated on the wiki
page |
|
|
8932
|
Mon Jul 29 13:39:25 2013 |
gautam | Configuration | endtable upgrade | PZT Driver Board-further changes |
I have |
|
|
8935
|
Mon Jul 29 21:57:45 2013 |
gautam | Configuration | endtable upgrade | Hardware installed at 1X9 | The following hardware |
|
|
8942
|
Tue Jul 30 19:40:47 2013 |
gautam | Configuration | endtable upgrade | DAC-PZT Driver Board Output Signal Chain Tested |
[Alex, Gautam]
|
|
|
8943
|
Tue Jul 30 19:44:05 2013 |
gautam | Configuration | endtable upgrade | Second mirror glued to PZT and mounted |
I have |
|
|
8967
|
Mon Aug 5 18:48:44 2013 |
gautam | Configuration | endtable upgrade | Full range calibration of PZT mounted mirrors for Y-endtable | I
had prepared two more PZT mounted mirrors
for the Y-end some time back. These are: |
|
|
9451
|
Mon Dec 9 11:44:08 2013 |
Steve | Update | endtable upgrade | ETMY optable got new beam dump | Aluminum shield replaced by razor beam
dump. |
|
|
9941
|
Mon May 12 14:42:25 2014 |
steve | Update | endtable upgrade | optical table enclosure wall proposal and table at ETMY |
|
|
|
11591
|
Fri Sep 11 10:56:47 2015 |
Steve | Update | endtable upgrade | ETMY optical table feedthrough | The ETMY enclosure feedthrough - north
is installed. The sealing material is hard
to work with. |
|
|
11600
|
Tue Sep 15 16:49:08 2015 |
Steve | Update | endtable upgrade | ETMY optical table feedthrough | ETMY optical table enclosure feedthrough-
south is in. Now it is time to see how air
tightness increases performance. |
|
|
11608
|
Thu Sep 17 02:22:53 2015 |
Steve | Update | endtable upgrade | ETMY optical table feedthrough | I doubt we'll see any effect until
we carefully seal the holes. If there's
1 hole in your boat it still sinks. |
|
|
11897
|
Tue Dec 22 16:39:42 2015 |
Steve | Update | endtable upgrade | ETMY optical table enclosure | I think there should be a scientifically
based aveluation of the ETMY enclosure so
we can make the ETMX better. |
|
|
12029
|
Thu Mar 10 16:29:32 2016 |
gautam | Update | endtable upgrade | Inventory check | I did a quick sweep of the lab to find
out what hardware has already been acquired
for the X-end table upgrade. The attached |
|
|
12030
|
Thu Mar 10 16:32:45 2016 |
rana | Update | endtable upgrade | Inventory check | Its not a good idea to use green mounts
with green lasers. Steve should be able to
get another copy of the EY doubler mount |
|
|
12033
|
Mon Mar 14 22:42:23 2016 |
gautam | Update | endtable upgrade | Inventory check |
|
|
|
12051
|
Mon Mar 28 10:43:18 2016 |
Steve | Update | endtable upgrade | ETMX 4'x2' optical table pictures |
|
|