| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14207
|
Fri Sep 21 16:51:43 2018 |
gautam | Update | VAC | c1vac1 is unresponsive | Steve pointed out that some of the vacuum
MEDM screen fields were reporting "NO
COMM". Koji confirmed that this is a |
|
|
14215
|
Mon Sep 24 15:06:10 2018 |
gautam | Update | VAC | c1vac1 reboot + TP1 controller replacement | [steve, gautam]
Following the procedure in this |
|
|
14278
|
Tue Nov 6 19:41:46 2018 |
Jon | Omnistructure | | c1vac1/2 replacement | This afternoon I started setting up the
Supermicro 5017A-EP that will replace c1vac1/2.
Following Johannes's procedure in |
|
|
1505
|
Mon Apr 20 23:27:59 2009 |
rana | Summary | VAC | c1vac2 rebooted: non-functional for several months | We found several problems with the framebuilder
tonight. The first symptom was that it was
totally out of
|
|
|
5989
|
Wed Nov 23 16:48:39 2011 |
Suresh | Update | General | cable cleanup | [Koji Suresh]
As part of the general lab clean
up we removed many unused BNC cables (long |
|
|
875
|
Mon Aug 25 10:23:53 2008 |
steve | HowTo | General | cable killer | Rack 1Y7 double violation:
BNC cables left to be jammed by door
|
|
|
7873
|
Thu Jan 3 19:19:59 2013 |
rana | HowTo | Electronics | cable racks | Today I found 3 power cables in the
orange Pomona cable tray, put in
so that the cables were |
|
|
4390
|
Wed Mar 9 16:07:42 2011 |
kiwamu | Update | VIDEO | cable session | [Koji, Steve, Suresh, Kiwamu]
The following video cables have been
newly laid down : |
|
|
11659
|
Fri Oct 2 15:11:08 2015 |
Steve | Update | PEM | cable squashed | Cable numbered #53 from Accelerometer 4
to 1X7 / DAQ input c26 was squased while
removing network card from Sun Fire x4600 |
|
|
7807
|
Tue Dec 11 08:53:52 2012 |
Steve | HowTo | PEM | cables needs care | How NOT
to:
The |
|
|
7809
|
Tue Dec 11 10:09:04 2012 |
Ayaka | HowTo | PEM | cables needs care |
|
|
|
3996
|
Tue Nov 30 12:33:27 2010 |
kiwamu | Summary | IOO | cabling of in-vac PZT mirrors | |
|
|
10066
|
Wed Jun 18 22:34:44 2014 |
ericq | Update | IOO | caget frusrtation |
|
|
|
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 |
|
|
6931
|
Fri Jul 6 14:10:31 2012 |
yuta | Summary | LSC | calculation of FPMI using ALS | From calculation, phase fluctuation of
reflected beam from length stabilized arm
is not disturbing MI lock. |
|
|
4402
|
Thu Mar 10 17:03:48 2011 |
Larisa Thorne | Configuration | Electronics | calculations for passive low pass filter on X arm | [Kiwamu, Larisa]
We want to increase gain in the lower |
|
|
17160
|
Tue Sep 27 10:50:11 2022 |
Paco | Update | BHD | calibrated LO phase noise | Locked LO phase to ITMX single bounce beam
at the AS port, using the DCPD (A-B) error
point and actuating on LO1 POS. For this |
|
|
17161
|
Wed Sep 28 16:37:26 2022 |
Paco | Update | BHD | calibrated LO phase noise; update | [yuta, paco]
Update; the high frequency ( >
100 Hz) drop is of course not real and comes |
|
|
17163
|
Wed Sep 28 21:54:08 2022 |
Paco | Update | BHD | calibrated LO phase noise; update | Repeated the LO phase noise measurement,
this time with the LO - ITMY single
bounce, and a couple of fixes Koji |
|
|
8248
|
Thu Mar 7 01:43:35 2013 |
yuta | Update | LSC | calibrated MI differential length spectra | Free swing MI differential length is 86 nm
RMS and residual length when locked |
|
|
6841
|
Wed Jun 20 18:43:57 2012 |
yuta | Update | LSC | calibrated POX error signal | [Jenne, Yuta]
We did the same calibration for POX. |
|
|
6834
|
Tue Jun 19 23:36:19 2012 |
yuta | Update | LSC | calibrated POY error signal | [Jenne, Yuta]
We calibrated POY error signal(C1:LSC-POY11_I_ERR). |
|
|
6835
|
Wed Jun 20 00:01:04 2012 |
Jenne | Update | LSC | calibrated POY error signal | [Yuta, Jenne]
We have measured the out of loop
residual motion of the Yarm while locked |
|
|
8256
|
Fri Mar 8 03:07:19 2013 |
yuta | Update | LSC | calibrated PRM-ITMY length spectra | Measured free swing PRM-ITMY length was
230
nm RMS. |
|
|
9606
|
Wed Feb 5 20:41:57 2014 |
Den | Update | LSC | calibrated spetra from OAF test | We did online adaptive filtering test with
IMC and arms 1 year ago (log
7771). In the 40m presentations I can |
|
|
6938
|
Sun Jul 8 00:27:54 2012 |
yuta | Summary | Locking | calibrating phase tracking mode scan data | FSR
for X/Y arm are 3.97 +/- 0.03 MHz and 3.96
+/- 0.02 MHz respectively. This |
|
|
6939
|
Sun Jul 8 00:58:08 2012 |
Koji | Summary | Locking | calibrating phase tracking mode scan data |
|
|
|
6815
|
Wed Jun 13 17:39:13 2012 |
yuta | Update | Green Locking | calibrating the beatbox | [Jenne, Yuta]
We put 0 dBm sine wave to the RF input |
|
|
1185
|
Mon Dec 8 00:10:42 2008 |
caryn | Summary | General | calibrating the jenne laser | I apologize in advance for the long list of
numbers in the attachment. I can't seem to
make them hide for some reason.
|
|
|
1189
|
Tue Dec 9 10:48:17 2008 |
Caryn | Summary | General | calibrating the jenne laser: impedance mismatch? |
We sent RFout of network analyzer to a splitter,
with one side going back to the network analyzer |
|
|
8255
|
Fri Mar 8 02:17:04 2013 |
yuta | Update | LSC | calibration of PRM actuator | [Manasa, Yuta]
We measured AC response of PRM actuator |
|
|
5637
|
Sat Oct 8 00:44:42 2011 |
kiwamu | Update | LSC | calibration of SRM actuator | The AC response
of the SRM actuator has been calibrated. |
|
|
7738
|
Wed Nov 21 21:06:13 2012 |
Ayaka | Update | LSC | calibration of arms | Motivation
In order to estimate whether we can
see acoustic coupling in arms or not, we |
7x |
|
7739
|
Sat Nov 24 13:58:07 2012 |
rana | Update | LSC | calibration of arms | For the loop diagnosis, its best
to use the method of "IN1/IN2",
rather than manipulate the close loop gain. |
|
|
7743
|
Mon Nov 26 10:42:06 2012 |
Ayaka | Update | LSC | calibration of arms | I uploaded a zip file that contains data
files used for the calibration.
OLTF_x/y.txt: the open loop transfer |
|
|
8009
|
Wed Feb 6 15:05:18 2013 |
Steve | Update | SAFETY | cameras must be anchord | Cameras
must be immediately anchord to avoid a possible |
|
|
7178
|
Tue Aug 14 14:26:40 2012 |
Steve | Update | Cameras | cameras touched up | I optimized the TM views with illuminator
light on quad1 It actually looks better
there. |
|
|
2453
|
Sun Dec 27 20:05:28 2009 |
kiwamu | Update | Computers | can not communicate with front-ends | In this evening I found that fb40m has
been down, then I restarted fm40m successfully.
|
|
|
8714
|
Mon Jun 17 23:12:19 2013 |
Manasa | Update | Green Locking | can't get IR to resonate | What I did:
1. Followed the same procedure to
enable ALS (http://nodus.ligo.caltech.edu:8080/40m/8703) |
|
|
1836
|
Wed Aug 5 15:33:05 2009 |
rob, alberto | DAQ | General | can't get trends | We can't read minute trends from either
Dataviewer or loadLIGOData from before 11am
this morning. |
|
|
1841
|
Thu Aug 6 09:22:17 2009 |
Alberto | DAQ | General | can't get trends |
|
|
|
8143
|
Sat Feb 23 07:14:58 2013 |
yuta | Update | LSC | can't lock Y arm | I tried to align and lock Y arm for the
first time after pumping.
But I couldn't lock Y arm for more |
|
|
8149
|
Sat Feb 23 16:54:24 2013 |
Jenne | Update | LSC | can't lock Y arm | I'm not sure that Yuta had found the real
Yarm flashes last night. When I came
in today, the Yarm would flash. However |
|
|
8150
|
Sat Feb 23 17:14:59 2013 |
yuta | Update | LSC | can't lock Y arm | Jenne found that;
0. If all mirrors are "aligned,"
Yarm flashes. |
|
|
6816
|
Thu Jun 14 01:36:34 2012 |
yuta | Update | Green Locking | can't scan Y arm for 1FSR | [Jenne, Koji, Yuta]
We tried to scan of the Y arm but |
|
|
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 |
|
|
4667
|
Mon May 9 16:12:49 2011 |
Jamie | Configuration | CDS | canonicalize paths to core and userapps | I have updated the /opt/rtcds paths to
reflect the new specification of the CDS
aLIGO code release procedures document. |
|
|
10938
|
Fri Jan 23 19:38:02 2015 |
Jenne | Update | LSC | carm_cm_up supports both signs of CARM offset | A small change, but now the carm_up script
supports both sides of the CARM offset.
After the arms are locked with ALS it asks |
|
|
12965
|
Wed May 3 16:12:36 2017 |
johannes | Configuration | Computers | catastrophic multiple monitor failures | It seems we lost |
|
|
12966
|
Wed May 3 16:46:18 2017 |
Koji | Configuration | Computers | catastrophic multiple monitor failures | - Is there any machine that can handle
4K? I have one 4K LCD for no use.
- I also can donate one 24" Dell |
|