| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
12131
|
Tue May 24 23:17:37 2016 |
ericq | Update | COC | Finesse modelling - mode overlap scans | I think you should use the current actual
PRC & SRC cavity lengths as measured,
as it would be simplest to simply replace |
|
|
12132
|
Wed May 25 02:54:09 2016 |
ericq | Update | General | Odds and ends | WFS locking point seemed degraded; I hand
aligned and reset the WFS offsets as usual.
ITMX oplev recentered. While doing |
|
|
12133
|
Wed May 25 08:32:55 2016 |
Steve | Update | SUS | local EQ 3.5m | Local EQ 3.5 mag at 2:28 UTC May
24, 2016 Rancho Cucamonga, Ca.....no damage
|
|
|
12134
|
Wed May 25 11:51:40 2016 |
Steve | Update | safety | SURF 2016 safety |
|
|
|
12135
|
Wed May 25 14:21:29 2016 |
Max Isi | Update | General | Summary page configuration | I have modified the c1summary.ini and c1lsc.ini
configuration files slightly to avoid overloading
the system and remove the errors that were |
|
|
12136
|
Wed May 25 14:29:31 2016 |
Varun | Update | General | SURF 2016 | Edited the AGC to include overlapping frames
yesterday. forgot to put an elog on it!
|
|
|
12137
|
Thu May 26 18:10:48 2016 |
Varun | Update | General | SURF 2016 | Wrote and tested a function for downconversion.
It contains a mixer with a sinusoidal input
for modulation with the desired frequency |
|
|
12138
|
Fri May 27 02:52:53 2016 |
ericq | Update | LSC | Restoring high BW single arm control | I've been futzing with the common mode
servo, trying to engage the AO path with
POY for high bandwidth control of a single |
|
|
12139
|
Fri May 27 11:54:22 2016 |
Varun | Update | General | Package delivery | A package labelled 'UPS Ground'
has arrived.
-Varun |
|
|
12140
|
Mon May 30 18:19:50 2016 |
Johannes | Update | CDS | ASS medm screen update | I noticed that the TRY button in the ASS
main screen was linking to LSC_TRX instead
of LSC_TRY. Gautam fixed it. |
|
|
12141
|
Tue May 31 16:52:58 2016 |
Steve | Update | safety | NONO | Please do not place anything on the top
of the cabinets that is not tied down. It
will end up on our head in an earth quake. |
|
|
12142
|
Wed Jun 1 09:06:38 2016 |
Steve | Update | LSC | New stands for TransMon/Oplev QPDs | Machined from I-beam 6061 T6 Aluminum 5"
x 0.5 x 3.25
|
|
|
12143
|
Wed Jun 1 11:19:14 2016 |
Varun | Update | General | Update of work till now | Completed:
Wrote and tested a code for AGC
using cavity transmission signal and length |
|
|
12144
|
Wed Jun 1 15:01:56 2016 |
Steve | Update | SUS | wire standoffs update | There are some issues with 5 mm sapphire
prism Atm5. It will cause interference
between one of the prisms and the Side OSEM. |
|
|
12145
|
Wed Jun 1 16:28:28 2016 |
ericq | Update | Electronics | Common board Op amp input offsets | I used a Eurocard extension board to peek
at the inputs and outputs of each of the
gain-ladder AD829s on input B of the CM board |
|
|
12146
|
Thu Jun 2 16:35:44 2016 |
Koji | Update | SUS | wire standoffs update | Gap of the prism from the mirror
Sag: s = R(1-Cos[ArcSin[d/2/R]])
- Mirror curvature sag for 2mm |
|
|
12147
|
Fri Jun 3 12:53:44 2016 |
ericq | Update | Electronics | Common board Op amp input offsets | I replaced some of the AD829s with other
AD829s, but the offset situation didn't
improve. |
|
|
12148
|
Fri Jun 3 13:05:18 2016 |
ericq | Update | CDS | CDS Notes | Some CDS related things:
Keith Thorne has told us
about a potential fix for our framebuilder woes. |
|
|
12149
|
Fri Jun 3 14:24:13 2016 |
Steve | Update | SUS | local EQ 3.1 m | Local EQ 3.1 mag at Jun 2, 2016 11:06:16
PM UTC, Muscoy CA........no damage
Our STS should seen this shake. |
|
|
12150
|
Fri Jun 3 17:56:14 2016 |
Varun | Update | General | DAFI update | Wrote and tested a phase vocoder, with
two of its applications:
1) Time scaling: This enables change |
|
|
12151
|
Mon Jun 6 16:41:36 2016 |
ericq | Update | CDS | FB upgrade work | Barring objections, starting tomorrow morning, Jamie
will be testing the new FB code. The IFO
will not be available for other use while |
|
|
12152
|
Tue Jun 7 11:12:47 2016 |
jamie | Update | CDS | DAQD UPGRADE WORK UNDERWAY | I
am re-starting work on the daqd upgrade again
now. Expect the daqd |
|
|
12153
|
Tue Jun 7 17:21:13 2016 |
Aakash | Update | General | SURF 2016 | Hi!
I am Aakash Patil. I will be working
at the 40m lab as a SURF student with Gautam |
|
|
12154
|
Tue Jun 7 18:20:18 2016 |
Varun | Update | General | DAFI update | Tried to implement AGC on FE. Had some
trouble bringing the code into the correct
form. It looks okay now. However, this agc |
|
|
12155
|
Tue Jun 7 20:49:50 2016 |
jamie | Update | CDS | DAQD work ongoing | Summary: new daqd code
running overnight test on fb1. Stability
issues persist. |
|
|
12156
|
Wed Jun 8 08:34:55 2016 |
jamie | Update | CDS | DAQD work ongoing | 38 restarts overnight. Problem definitely
not fixed. I'll be reverting back
to old daqd and fb this morning. Then |
|
|
12157
|
Wed Jun 8 10:20:14 2016 |
Steve | Update | safety | SURF 2016 safety | Aakash Patil received 40m specific basic
safety training.
|
|
|
12158
|
Wed Jun 8 13:50:39 2016 |
jamie | Configuration | CDS | Spectracom IRIG-B card installed on fb1 | [EDIT: corrected name of installed card]
We just installed a Spectracom
TSyc-PCIe timing card on fb1. The |
|
|
12159
|
Wed Jun 8 16:12:38 2016 |
Varun | Update | General | DAFI update | Summary: I am implementing
digital audio filtering on various interferometer |
|
|
12160
|
Thu Jun 9 09:57:06 2016 |
Aakash | Update | General | Seismometer Enclosure Development |
Me and Gautam yesterday
opened the tilt-free seismometer enclosure
to see if we could use the thermocouples |
|
|
12161
|
Thu Jun 9 13:28:07 2016 |
jamie | Configuration | CDS | Spectracom IRIG-B card installed on fb1 | Something is wrong with the timing we're
getting out of the symmetricom driver, associated
with the new spectracom card. |
|
|
12162
|
Thu Jun 9 15:14:46 2016 |
jamie | Update | CDS | old fb restarted, test of new daqdon fb1 aborted for time being | I've restarted the old daqd on fb until
I can figure out what's going on with
the symmetricom driver on fb1. |
|
|
12163
|
Thu Jun 9 18:54:40 2016 |
Aakash | Update | General | About Acromag | SURF 2016 | Today I tried to setup Acromag Busworks
card. I was able to calibrate and test it
over USB but I couldn't test it over |
|
|
12164
|
Thu Jun 9 19:08:58 2016 |
Varun | Update | Electronics | Anti-Aliasing Filter update | Eric gave me a psd plot of a signal which
would be the input of a channel of the AA
filter. the Nyquist freq. is about 32.8kHz. |
|
|
12165
|
Fri Jun 10 09:52:51 2016 |
Steve | Update | SUS | EQ 5.2 mag Borego Spring | EQ 5.2 mag at Jun 10, 8:04 am UTC,
Borego Spring, CA ~150 mi away.........no
obvoius damage, damping restored, MC is locking, |
|
|
12166
|
Fri Jun 10 12:09:01 2016 |
jamie | Configuration | CDS | IRIG-B debugging | Looks like we might have a problem with
the IRIG-B output of the GPS receiver.
Rolf came over this morning to |
|
|
12167
|
Fri Jun 10 12:21:54 2016 |
jamie | Configuration | CDS | GPS receiver not resetting properly | The GPS receiver (EndRun Technologies box
in 1Y5? (rack closest to door)) seems to
not coming back up properly after the reboot. |
|
|
12168
|
Fri Jun 10 16:19:03 2016 |
ericq | Update | SUS | ETMX watch | ETMX has been jumping around again lately.
Just now, I zeroed the ETMX alignment offsets
in the SUS model, and centered the ETMX |
|
|
12169
|
Fri Jun 10 18:16:59 2016 |
varun | Update | PSL | Realignment of pre mode cleaner | The mode cleaner was misaligned probably
due to the earthquake (the drop in the
MC transmitted value slightly after utc 7:38:52 |
|
|
12170
|
Mon Jun 13 09:08:17 2016 |
Steve | Update | PSL | PMC slow drift | The PMC transmission slow degration or
it's input beam is not stable.
|
|
|
12171
|
Mon Jun 13 10:01:58 2016 |
Steve | Update | SUS | ETMX jumps |
|
|
|
12172
|
Mon Jun 13 19:30:58 2016 |
Aakash | Update | General | EPICS Installation | SURF 2016 | About acquiring data: Initially I couldn't
start with proper Acromag setup as the Raspberry
pi had a faulty SD card slot. Then Gautam |
|
|
12173
|
Mon Jun 13 20:01:30 2016 |
varun | Update | CDS | DAFI GUI update | Summary: I am implementing
digital audio filtering on various interferometer
signals in order to listen to the processed |
|
|
12174
|
Tue Jun 14 10:13:34 2016 |
Steve | Update | VAC | temporary N2 supply line | The drill room floor will be retiled Thursday,
June 16. Temporary nitrogen line set up will
allow emptying the hole area. |
|
|
12175
|
Tue Jun 14 11:29:25 2016 |
Johannes | Summary | ASC | YArm OpLev Calibration | In preparation for the armloss map I checked
the calibration of the Y-Arm ITM and ETM
OpLevs with the method originally described |
|
|
12176
|
Tue Jun 14 11:52:08 2016 |
Johannes | Update | General | EPICS Installation | SURF 2016 | We generally want to keep the configuration
of the 40m close to that of the LIGO sites,
which is why we chose BusWorks, and it is |
|
|
12177
|
Tue Jun 14 15:55:17 2016 |
ericq | Update | SUS | ETMX watch | Within two hours, it was already all over
the place.
|
|
|
12178
|
Tue Jun 14 16:53:16 2016 |
rana | Update | SUS | ETMX watch | What about ETMY? and are these really microradians
or just some made up cal? |
|
|
12179
|
Tue Jun 14 19:37:40 2016 |
jamie | Update | CDS | Overnight daqd test underway | I'm running another overnight test
with new daqd software on fb1. The
normal daqd process on fb has been shutdown, |
|
|
12180
|
Tue Jun 14 20:10:19 2016 |
varun | Update | CDS | DAFI GUI update | I have added Enable buttons for each of
the DSP blocks, and labels for the matrix
elements. The input matrix takes inputs from |
|