| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6572
|
Thu Apr 26 11:56:10 2012 |
Den | Update | PEM | Blue Bird Pre-Amplifier |
|
|
|
6574
|
Thu Apr 26 18:15:59 2012 |
Jamie | Update | CDS | possible issue with mx_stream on front ends | I'm noticing what appears to be occasional
failures of mx_stream on the front end machines.
It doesn't happen that frequently, but I've |
|
|
6575
|
Thu Apr 26 18:17:56 2012 |
Suresh | Update | IOO | MC WFS: Tweaked the WFS offsets | [Jamie, Suresh]
Yesterday Den and Koji reported that
the WFS loops were causing the MC to become |
|
|
6576
|
Thu Apr 26 20:44:23 2012 |
Jamie | Update | CDS | daq network failure, c1ioo failing to start models | Den tried adding a SINGLE acquire channel
to the c1ioo, which for some reason hung
c1ioo and took down the entire DAQ network |
|
|
6577
|
Fri Apr 27 08:11:19 2012 |
steve | Update | CDS | c1ioo condition |
|
|
|
6578
|
Fri Apr 27 09:00:15 2012 |
Jamie | Update | CDS | sus watchdogs? | Why are all the suspension watchdogs tripped?
None of the suspension models are running
on c1ioo, so they should be completely unaffected. |
|
|
6579
|
Fri Apr 27 09:27:48 2012 |
Den | Update | CDS | sus watchdogs? |
|
|
|
6580
|
Fri Apr 27 12:12:14 2012 |
Den | Update | CDS | c1ioo is back | Rolf came to the 40m today and managed
to figure out what the problem is. Reading
just dmesg was not enough to solve the problem. |
|
|
6581
|
Fri Apr 27 13:32:06 2012 |
Den | Update | PEM | seism channels | A few weeks ago I found that GUR2_X signal
is biased from 0 to 800 counts in average.
I decided that the corresponding channel |
|
|
6582
|
Mon Apr 30 13:00:50 2012 |
Suresh | Update | CDS | Frame Builder is down | Frame builder is down. PRM has tripped
its watch dogs. I have reset the watch
dog on PRM and turned on the OPLEV. It has |
|
|
6583
|
Mon Apr 30 13:58:25 2012 |
Jamie | Update | CDS | Frame Builder is down |
|
|
|
6584
|
Mon Apr 30 16:56:05 2012 |
Suresh | Update | CDS | Frame Builder is down |
|
|
|
6585
|
Mon Apr 30 18:46:34 2012 |
rana | Update | Computers | megatron | Last week I found that megatron was still
off after the power outage. Apparently, the
power recovery checklist had not been followed |
|
|
6586
|
Mon Apr 30 20:43:33 2012 |
Suresh | Update | CDS | Frame Builder is down |
|
|
|
6587
|
Mon Apr 30 21:05:32 2012 |
Jenne | Update | SUS | ETMY oplev power supply dead | [Jenne, MikeJ]
The ETMY oplev quad sum was ~0, so
we went to investigate. The power supply |
|
|
6588
|
Mon Apr 30 21:24:43 2012 |
Koji | Update | SUS | ETMY oplev power supply dead | And has the temp controller of the green
been recovered too? (Push enable button)
|
|
|
6589
|
Mon Apr 30 22:41:34 2012 |
Jenne | Update | SUS | ETMY oplev power supply dead |
|
|
|
6590
|
Mon Apr 30 22:58:57 2012 |
Jenne | Update | Electronics | 11MHz Marconi set to default after power outage | After a power outage, a Marconi comes back
to it's defaults. It needed to be reset
to the values in elog 5530. |
|
|
6591
|
Tue May 1 08:18:50 2012 |
Jamie | Update | CDS | Frame Builder is down |
|
|
|
6592
|
Tue May 1 17:42:15 2012 |
Mike J. | Update | Computers | Sensoray | I've upgraded the Sensoray GUI so it can
now switch the video channel it receives,
thanks to the videoswitch script. |
|
|
6593
|
Wed May 2 19:47:20 2012 |
Den | Update | PEM | EM 172 nonlinearities | I've checked new small EM172 microphones
for nonlinearities using Koji's Mac Book
speakers. EM172 + Mac nonlinearities are |
|
|
6594
|
Wed May 2 21:04:06 2012 |
Den | Update | PEM | EM 172 coherence | I measured coherence between 2 EM 172 microphones
in a "quiet room" with SR785
|
|
|
6596
|
Thu May 3 13:19:17 2012 |
Jenne | Update | Locking | More success last night | I locked each arm, and the Michelson last
night, no problems after I increased the
Yarm gain from 0.1 to 0.2 . I checked |
|
|
6598
|
Thu May 3 17:15:38 2012 |
Koji | Update | LSC | c1iscaux2 rebooted/burtrestored | [Jenne/Den/Koji]
We saw some white boxes on the LSC
screens. |
|
|
6599
|
Thu May 3 19:52:43 2012 |
Jenne | Update | CDS | Output errors from dither alignment (Xarm) script | epicsThreadOnceOsd epicsMutexLock
failed.
Segmentation fault |
|
|
6601
|
Thu May 3 22:37:44 2012 |
Jenne | Update | General | OpLev 90-day trend | After fixing the PRM tonight, all of the
oplevs look okay.
.....except ITMX, which looks like |
|
|
6602
|
Fri May 4 17:44:42 2012 |
Jenne | Update | General | OpLev 90-day trend |
|
|
|
6603
|
Fri May 4 17:46:46 2012 |
Jenne | Update | Green Locking | PSL doubling oven back on | While walking past the PSL, I noticed that
the PSL's doubling oven's heater was still
disabled from the power outage. As |
|
|
6604
|
Sat May 5 01:24:07 2012 |
Den | Update | PSL | PMC | I was interested what whitening filter
do we have between MC servo and ADC. The
shape is in the figure below, SR provided |
|
|
6605
|
Sat May 5 09:13:02 2012 |
Koji | Update | PSL | PMC | I suspect that it was just unlocked when
you had disconnected the cable.
There is not reflection now. It seems |
|
|
6606
|
Sat May 5 10:20:21 2012 |
Den | Update | PSL | PMC |
|
|
|
6607
|
Sat May 5 12:23:38 2012 |
Koji | Update | PSL | PMC | No matter how you connect/disconnect, touching
the laser may cause the PMC unlocked.
At |
|
|
6608
|
Sat May 5 20:42:59 2012 |
Den | Update | PSL | PMC | [Koji, Den]
Koji was right that I misaligned
everything during the alignment work. I assumed |
|
|
6609
|
Sun May 6 00:11:00 2012 |
Den | Update | CDS | mx_stream | c1sus and c1iscex computers could not connect
to framebuilder, I restarted it, did not
help. Then I restarted mx_stream daemon on |
|
|
6610
|
Sun May 6 01:41:55 2012 |
Den | Update | PEM | seismic in x,y arms | I locked x,y arms and measured coherence
between POS{X,Y}11_I_ERR, MC_F and seismometer
signals. |
|
|
6611
|
Mon May 7 01:07:58 2012 |
Den | Update | IOO | seismic in mcf | I tried to figure out where additional
(to seismic) noise enters to MC_F, so the
coherence below 1 Hz is low (~0.2-0.5). I've |
|
|
6612
|
Mon May 7 12:57:34 2012 |
Den | Update | IOO | WFS noise in MC | I've measured coherence between seismometer
signals and OSEMS of MC 1,2,3
|
|
|
6613
|
Mon May 7 17:28:29 2012 |
Den | Update | IOO | WFS noise in MC |
|
|
|
6614
|
Mon May 7 19:39:52 2012 |
Koji | Update | IOO | WFS noise in MC | OK. Then we should make this number bigger
such that the coherence is still completely
maintained. |
|
|
6615
|
Mon May 7 20:15:37 2012 |
Den | Update | IOO | WFS noise in MC |
|
|
|
6616
|
Mon May 7 21:05:38 2012 |
Den | Update | CDS | biquad filter form | I wanted to switch the implementation of
IIR_FILTER from DIRECT FORM II to BIQUAD
form in C1IOO and C1SUS models. I modified |
|
|
6617
|
Mon May 7 21:19:00 2012 |
Jenne | Update | SUS | ETMX oplev | I'm still not super happy with the low
power level of the ETMX oplev, so I went
to investigate. |
|
|
6618
|
Mon May 7 21:46:10 2012 |
Den | Update | CDS | guralp signal error | GUR1_XYZ_IN1 and GUR2_XYZ_IN1 are the same
and equal to GUR2_XYZ. |
|
|
6619
|
Mon May 7 22:39:37 2012 |
Den | Update | CDS | c1sus | [Jenne, Den]
We decided to reboot C1SUS machine
in hope that this will fix the problem with |
|
|
6620
|
Tue May 8 03:33:24 2012 |
Jenne | Update | SUS | New misalign / restore scripts for IFO_ALIGN screen | Since Den wasn't able to fix c1sus (make
it talk to the framebuilder) before he left
a few hours ago, I decided to do some housekeeping |
|
|
6621
|
Tue May 8 03:38:28 2012 |
Jenne | Update | General | MEDM svn emergency!!! | We officially are
*failures* at svn-ing our scripts and screens. |
|
|
6622
|
Tue May 8 09:47:53 2012 |
Jamie | Update | CDS | biquad filter form |
|
|
|
6623
|
Tue May 8 09:58:17 2012 |
Den | Update | CDS | SUS -> FB | [Alex, Den]
It |
|
|
6624
|
Tue May 8 10:43:42 2012 |
Den | Update | CDS | biquad filter form |
|
|
|
6625
|
Tue May 8 16:43:15 2012 |
Jenne | Update | CDS | Degenerate channels, potentially a big mess | Rana
theorized that we're having problems with
the MC error signal in the OAF model (separate |
|