| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
8576
|
Tue May 14 21:03:15 2013 |
Annalisa | Update | 40m Upgrading | Endtable upgrade for auxiliary green laser : progress |
GREEN
The new lenses arrived, and I put |
|
|
8584
|
Wed May 15 21:27:39 2013 |
Annalisa | Update | 40m Upgrading | Endtable upgrade for auxiliary green laser : progress |
GREEN
I still have problems in maximizing |
|
|
8486
|
Wed Apr 24 15:27:59 2013 |
Manasa | Update | 40m Upgrading | Endtable upgrade for auxiliary green laser : progress: New layout | Layout that will be improved upon over
the next few days.
Things that need to be updated: |
|
|
7889
|
Thu Jan 10 12:41:06 2013 |
Manasa | Configuration | 40m Upgrading | Endtable upgrade for auxiliary green laser : wiki page |
I have created a wiki page linked here with |
|
|
3762
|
Fri Oct 22 16:59:21 2010 |
Jenne | Update | Electronics | Epic Takeover | As the suspension work winds down (we'll
be completely done once the ETMs arrive,
are suspended, and then are placed in the |
|
|
3764
|
Fri Oct 22 18:22:27 2010 |
Alberto | Update | Electronics | Epic Takeover |
|
|
|
15007
|
Mon Nov 4 11:41:28 2019 |
shruti | Update | Computer Scripts / Programs | Epics installed on donatella | I've installed pyepics on Donatella
running
sudo yum install pyepics |
|
|
17933
|
Mon Oct 30 13:28:28 2023 |
Koji | Update | BHD | Epoxy removal | [JC Koji]
In the preparation of the OMC bond
rework, we removed the remaining bond layer |
|
|
12828
|
Tue Feb 14 10:43:06 2017 |
gautam | Bureaucracy | Equipment loan | Equipment to Cryo Lab | PZT |
|
|
9660
|
Fri Feb 21 12:45:57 2014 |
ericq | Update | LSC | Equivalent Displacement Noise from QPD Dark Noise in SQRTINV | EQ UPDATE: Measured it wrong the first
time, fixed now.
I measured the spectra of the SQRTINV |
|
|
9693
|
Wed Mar 5 18:04:36 2014 |
ericq | Update | LSC | Equivalent Displacement Noise from QPD Dark Noise in SQRTINV | At today's meeting, it was suspected that
these noise levels were far too low. (ELOG |
|
|
11525
|
Mon Aug 24 14:05:47 2015 |
ericq | Update | SUS | EricG Investigating L2A | This afternoon, I showed Eric Gustafson
some of the basics of making swept sine measurements
with DTT. We turned off the f2a filters and |
|
|
15178
|
Thu Jan 30 17:31:28 2020 |
Jon | Update | PSL | Errant FSS_INOFFSET change | A script I was testing errantly set C1:PSL-FSS_INOFFSET
=> 10 V at about 5:30 pm. I manually reverted
the channel value to 0, but I don't know |
|
|
15179
|
Thu Jan 30 17:41:10 2020 |
gautam | Update | PSL | Errant FSS_INOFFSET change | You can trend the data for the past few
hours and see what the appropriate value.
I think |
|
|
1175
|
Thu Dec 4 16:29:20 2008 |
josephb | Configuration | Computers | Error message on Frame Builder Raid Array | The Fibrenetix FX-606-U4 RAID connected to
the frame builder in 1Y7 is showing the following
error message: IDE Channel #4 Error Reading |
|
|
17010
|
Mon Jul 18 04:42:54 2022 |
Anchal | Update | Calibration | Error propagation to astrophysical parameters from detector calibration uncertainty | We can calculate how much detector calibration
uncertainty affects the estimation of astrophysical
parameters using the following method: |
|
|
17011
|
Mon Jul 18 15:17:51 2022 |
Hang | Update | Calibration | Error propagation to astrophysical parameters from detector calibration uncertainty | 1. In the error propogation equation, it
should be \Delta \Theta = -H^{-1} M \Delta
\Lambda, instead of the fractional error. |
|
|
17017
|
Tue Jul 19 07:34:46 2022 |
Anchal | Update | Calibration | Error propagation to astrophysical parameters from detector calibration uncertainty | Addressing the comments as numbered:
Yeah, that's correct,
that equation normally |
|
|
17029
|
Sun Jul 24 08:56:01 2022 |
Hang | Update | Calibration | Error propagation to astrophysical parameters from detector calibration uncertainty | Sorry I forgot to put tc & phic in
the example.
I modified astroFisherLib.py |
|
|
11119
|
Sun Mar 8 03:27:48 2015 |
Jenne | Update | LSC | Error signal blending for CARM/DARM transitions | This elog will be about work that happened
yesterday. I will write a reply to
this with work from this evening's success. |
|
|
11120
|
Sun Mar 8 04:04:19 2015 |
Jenne | Update | LSC | Error signal blending for CARM/DARM transitions | As I (very excitedly) reported in elog
11116, I was able to follow the error
signal blending procedure from last night, |
|
|
11121
|
Sun Mar 8 13:51:41 2015 |
rana | Update | LSC | Error signal blending for CARM/DARM transitions | According
to the official rules, we only need 8 seconds |
|
|
11122
|
Mon Mar 9 14:14:32 2015 |
Jenne | Update | LSC | Error signal blending for CARM/DARM transitions | Here is a longer stretch of data, from
the first RF-only lock on Saturday night.
Unfortunately daqd had died about 400 |
|
|
8401
|
Wed Apr 3 14:46:17 2013 |
Gabriele | Summary | LSC | Error signal simulation in PRMI | Here is a summary of a simulation of the
error signal behavior in the PRMI configuration.
The main parameters are: |
14x |
|
8537
|
Tue May 7 16:21:01 2013 |
Jenne | Summary | LSC | Error signal simulation in PRMI | I asked Gabriele why it looked like for
the PRCL sweep REFL 55 I&Q were zero
at zero, but for the MICH sweep only REFL55 |
8x |
|
10887
|
Tue Jan 13 00:42:15 2015 |
Jenne | Update | LSC | Error signals for MICH with variable finesse technique | In order to know where we should try to
make the transition from REFL##Q to ASDC
for MICH, I did a quick Optickle simulation |
|
|
8250
|
Thu Mar 7 12:39:12 2013 |
Jenne | Update | Locking | Erudite discussion on PRMI locking | [Rana, Jenne, Yuta] (late last night)
After some trouble getting the PRMI
to lock with REFL55 I&Q last night, we |
|
|
8251
|
Thu Mar 7 16:55:28 2013 |
Koji | Update | Locking | Erudite discussion on PRMI locking | PRMI for the sidebands may have different
situation. Investigate our wiki to find our
the simulation result. |
|
|
13023
|
Wed May 31 14:23:42 2017 |
jigyasa | Update | Computer Scripts / Programs | Establishing the EPICs channels for the GigE | To set up the EPICs channels for the GigE,
Gautam and I followed the steps in the elog
by him 8957 |
|
|
9490
|
Wed Dec 18 17:28:50 2013 |
Gabriele | Summary | LSC | Estimate of the PRC length error | Measurement
Looking back at what I did in april
(see log |
|
|
9493
|
Thu Dec 19 12:51:57 2013 |
Jenne | Summary | LSC | Estimate of the sign of the PRC length error | My hunch is that the PRC is SHORT
by a few cm, not long.
In my Optickle simulation, the sidebands |
|
|
9495
|
Thu Dec 19 18:33:25 2013 |
Gabriele | Summary | LSC | Estimate of the sign of the PRC length error | Maybe I'm getting confused,
but I still believe there is no way to decide
the direction from yesterday's measurement. |
|
|
10706
|
Wed Nov 12 22:22:11 2014 |
Koji | Summary | IOO | Estimation of the angular jitter imposed by the TTs | [Koji, Rana, Jenne]
One coil of the TT produce 36nrad/rtHz
at DC. |
|
|
444
|
Thu Apr 24 22:06:47 2008 |
Andrey | Summary | Computers | Ethernet Cables and Hubs | Today in the morning (between 8.30AM and noon)
Joe and I were working on understanding which
ethernet cables connect "processors controlling |
|
|
7691
|
Thu Nov 8 22:04:43 2012 |
Charles | Update | Electronics | Ethernet Illuminator Control | Configured ethernet controlled power strips
to have static IP addresses: 192.168.113.110,
192.168.113.111 and 192.168.113.112. |
|
|
7698
|
Mon Nov 12 23:38:50 2012 |
Charles | Update | Electronics | Ethernet Illuminator Control |
|
|
|
7701
|
Tue Nov 13 00:27:50 2012 |
Jenne | Update | Electronics | Ethernet Illuminator Control |
|
|
|
14414
|
Wed Jan 23 18:11:56 2019 |
gautam | Update | Electronics | Ethernet Power Strip IP conflict | For the last week, I noticed that I was
unable to turn the EY chamber illuminator
on using the remote python scripts. This |
|
|
14418
|
Fri Jan 25 12:49:53 2019 |
gautam | Update | Electronics | Ethernet Power Strip IP conflict resolved | To avoid the annoying excercise of having
to manually toggle the illuminators, I solved
the IP conflict. Made a wiki |
|
|
3852
|
Wed Nov 3 09:32:00 2010 |
rana | Summary | CDS | Eurocard board swapping | When swapping Eurocard boards, it
is safest to first turn down the power supplies
and then do the swapping. |
|
|
4903
|
Tue Jun 28 22:07:46 2011 |
Jamie | HowTo | SAFETY | Eurocrate extender card fried (ie. Jamie did a very bad thing) | IMPORTANT ELECTRONICS SAFETY
LESSON TO FOLLOW
Yesterday, |
|
|
8167
|
Tue Feb 26 09:55:46 2013 |
Steve | Update | SAFETY | Evan receives safety training | Evan got 40m specific safety training today. |
|
|
6505
|
Sat Apr 7 01:45:02 2012 |
Mike J. | Update | Computers | Even Better Hysteresis Model and Plots | The new hysteresis model is slightly
based on the SHO equation, but with the force
being out of phase with the position by an |
|
|
9674
|
Tue Feb 25 18:16:22 2014 |
Jenne | Summary | LSC | Even more violin filters | A new violin mode at 1303 Hz was ringing
up this afternoon. Rana and I added
a notch for this. |
|
|
2189
|
Fri Nov 6 00:40:29 2009 |
Alberto | Update | LSC | Everything put back as it was | I disconnected the setup for the arm cavity
TF measurement. I opened the scitation switch
on the ISS medm screen. I reconnected the |
|
|
2217
|
Mon Nov 9 15:11:02 2009 |
Alberto | Update | LSC | Everything put back as it was |
|
|
|
4187
|
Sat Jan 22 01:56:04 2011 |
Suresh | Update | Green Locking | Examining the stability of VCO PLL at low frequencies | [Kiwamu,
Suresh, Rana]
Our |
|
|
4188
|
Sat Jan 22 02:03:55 2011 |
Koji | Update | Green Locking | Examining the stability of VCO PLL at low frequencies | Damn.
If this figure is true, we were looking at
wrong signal. We should look at the feedback |
|
|
3090
|
Sat Jun 19 17:31:48 2010 |
rana | DAQ | CDS | Excess Noise in C1:IOO-MC_DRUM1 fixed by reboot | I was getting an excess noise in the C1:IOO-MC_DRUM1
channel - it was a flat spectrum of 10 cts/rHz |
|
|
6007
|
Fri Nov 25 18:45:31 2011 |
Den, Rana | Summary | SUS | Excess Noise in Digital Filtering | We are now trying to understand why the
coherence between SUS-X_SUSPOS_IN1 and SUS-X_SUSPOS_OUT
is lost below 1 Hz for X = MC1, MC2, MC3, |
|