| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
10896
|
Tue Jan 13 15:11:30 2015 |
diego | Update | LSC | Transitioned to ASDC MICH (PRMI and PRFPMI) | These are the parameters of the UGF servos
we used last night:
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|
10895
|
Tue Jan 13 14:01:20 2015 |
manasa | Update | General | AUX Y + PSL beat note at 1064nm: needs work |
|
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|
10894
|
Tue Jan 13 13:22:54 2015 |
Jenne | Update | General | AUX Y + PSL beat note at 1064nm: needs work | I'm super excited about this new frequency
readback, but I'm |
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|
10893
|
Tue Jan 13 10:28:02 2015 |
manasa | Update | General | AUX Y + PSL beat note at 1064nm |
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|
10892
|
Tue Jan 13 04:57:26 2015 |
ericq | Update | CDS | All FE diagnostics back to green | I was looking into the status of IPC communications
in our realtime network, as Chris suggested
that there may be more phase missing that |
|
|
10891
|
Tue Jan 13 03:58:27 2015 |
Jenne | Update | LSC | Transitioned to ASDC MICH (PRMI and PRFPMI) | [Jenne, Diego, EricQ]
Hopefully there will be more later,
but Chiara just went down (network? other? |
|
|
10890
|
Tue Jan 13 03:47:46 2015 |
ericq | Update | CDS | Installed new ethernet driver on Chiara | Chiara threw another network hissy fit.
Dmesg was spammed with a bunch of messages
like eth0: link up appearing |
|
|
10889
|
Tue Jan 13 01:58:16 2015 |
ericq | Update | Computer Scripts / Programs | Cdsutils upgraded to 382 | I've upgraded our cdsutils installation
to v382; there have been some changes to
pydv which will allow me to implement the |
|
|
10888
|
Tue Jan 13 01:11:51 2015 |
diego | Update | LSC | Response of error signals to MICH EXC | For several MICH offsets, I measured the
response of REFL33Q, ASDC and the ratio ASDC/POPDC
to a MICH EXC. It appears that there is no |
|
|
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 |
|
|
10886
|
Mon Jan 12 18:11:25 2015 |
ericq | Update | ASC | Test Mass -> Transmon QPD TFs measured | We want to have some angular control of
the arms during lock acquistion.
In single arm lock, Diego |
|
|
10885
|
Fri Jan 9 19:18:51 2015 |
Jenne | Update | PSL | PMC realigned | A few hours ago I tweaked up the alignment
to the PMC. It was really bad in pitch,
and the transmission was down to about 0.711. |
|
|
10884
|
Fri Jan 9 14:13:02 2015 |
manasa | Update | General | ALS noise at ~30Hz | Before starting to move things around the
PSL table, I measured the ALS out of loop noise |
|
|
10883
|
Fri Jan 9 14:01:17 2015 |
manasa | Update | General | AUX Y + PSL beat note at 1064nm | I
worked around the PSL table today.
The Y+PSL output from the optical |
|
|
10882
|
Fri Jan 9 10:52:37 2015 |
Steve | Update | SUS | PIT trend plots at the ends | 100 and 10 days trends of ETMX and ETMY_SUSPIT.
One can see clearly the earthquaks
of Dec.30 and 31 on the 10 day plot. You |
|
|
10881
|
Thu Jan 8 23:02:30 2015 |
diego | Update | SUS | SUS Drift Monitor | The MEDM screen has been updated: the new
buttons, one for each optic, call the scripts/general/SUS_DRIFTMON_update_reference.py
script, which measures (and averages) for |
|
|
10880
|
Thu Jan 8 19:41:50 2015 |
ericq | Update | General | inane LSCoffsets script removed | The restored offset script used old tdsavg
calls that our workstations can't do,
and didn't include things like the transmon |
|
|
10879
|
Thu Jan 8 19:02:42 2015 |
Jax | Summary | Electronics | MC demod modifications | Here's a summary of the changes made
to the D990511 serial 115 (formerly
known as REFL 33), as well as a short procedure. |
|
|
10878
|
Thu Jan 8 09:24:40 2015 |
jamie | Update | Computer Scripts / Programs | ELOG 3.0 |
Quote:
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|
10877
|
Thu Jan 8 03:40:50 2015 |
ericq | Update | Computer Scripts / Programs | ELOG 3.0 | I've installed the very fresh ELOG
3.0, for nothing else than the new built
in text editor which has a LATEX capable |
|
|
10876
|
Thu Jan 8 03:09:07 2015 |
Jenne | Update | LSC | Toward variable finesse locking | [Jenne, EricQ, Rana]
Tonight we started prepping for an
attempt at variable finesse locking. |
|
|
10875
|
Thu Jan 8 02:52:09 2015 |
ericq | Update | LSC | UGF Servo for LSC | I added UGF servos for the DRMI DoFs, after
creating a library block for the servos.
I also deleted the FMs before the phase rotation, |
|
|
10874
|
Wed Jan 7 21:13:35 2015 |
rana | Update | General | inane LSCoffsets script removed |
|
|
|
10873
|
Wed Jan 7 19:49:09 2015 |
manasa | Update | General | X end space issues | I have attached a photo of the ETMX table.
The path of the 1064nm light rejected after
the doubler and the green light are indicated |
|
|
10872
|
Wed Jan 7 15:53:01 2015 |
Jenne | Update | LSC | DC PD analog settings exposed | I have added another block to the LSC screen
(and made the corresponding sub-screen) to
expose the analog settings for the DC photodiodes. |
|
|
10871
|
Wed Jan 7 14:41:46 2015 |
Steve | Update | General | Ophir pmeter filter found |
|
|
|
10870
|
Wed Jan 7 14:35:44 2015 |
diego | Update | SUS | SUS Drift Monitor | The SUS Drift Monitor screen has been updated:
removed the old dead channels
from the MEDM screen;
updated |
|
|
10869
|
Wed Jan 7 14:16:27 2015 |
Jenne | Update | LSC | trans QPDs realigned | Now that both end transmission QPDs have
the line filters, I aligned them.
I locked and aligned the IR using |
|
|
10868
|
Wed Jan 7 13:39:42 2015 |
Chris | Update | LSC | DARM phase budget | I think the dolphin and RFM transit times
are double-counted in this budget. As I understand
it, all IPC transit times are already built |
|
|
10867
|
Wed Jan 7 12:15:17 2015 |
manasa | Update | General | New RF cables | I was
working around the PSL table this morning.
1. I have fibers running from |
|
|
10865
|
Wed Jan 7 11:20:22 2015 |
Steve | Update | LSC | X arm T-QPD gets SM1 thread adapter | C1:SUS-ETMX_QPD is removed and internal
SM1 thread adapter epoxied into position
as it is at |
|
|
10864
|
Wed Jan 7 09:44:33 2015 |
ericq | Update | LSC | DARM phase budget | As Jenne mentioned, I created a model of
the DARM OLG to see why we have so little
phase margin. However, it turns out I |
|
|
10863
|
Wed Jan 7 03:09:15 2015 |
Jenne | Update | LSC | PRFPMI status & IFO status | As a warm-up after the holidays, before
the real locking began, I installed 1064nm
bandpass filters in front of the transmission |
|
|
10862
|
Wed Jan 7 03:04:13 2015 |
Jenne | Update | LSC | TRY (thorlabs pd) weird noise | [Jenne, Diego, Rana]
This is a note about work done last
night. |
|
|
10861
|
Wed Jan 7 02:56:15 2015 |
diego | Update | LSC | UGF Servo for DARM | [Jenne, Diego]
Today we began implementing the UGF
Servos. Things we did: |
|
|
10860
|
Wed Jan 7 02:54:09 2015 |
Jenne | Update | LSC | Fiddling with DARM filters | One of the things that we had talked about
last night was the totally tiny amount of
phase margin that we have in the CARM and |
|
|
10859
|
Tue Jan 6 17:41:20 2015 |
Jenne | Configuration | CDS | DTT doesn't do envelopes?? | [Jenne, Diego]
We are working on trying out the
UGF servos, and wanted to take loop measurements |
|
|
10858
|
Tue Jan 6 10:04:39 2015 |
Steve | Update | IOO | happy IOO | |
|
|
10857
|
Tue Jan 6 03:13:09 2015 |
ericq | Update | LSC | PRFPMI status & IFO status | Two plots from tonight:
Lock loss. Based on the fact that
it looked like the DARM servo was running |
|
|
10856
|
Tue Jan 6 03:09:17 2015 |
diego | Update | LSC | PRFPMI status & IFO status | [Jenne, Rana, EricQ, Diego]
Tonight we worked on getting the
IFO back in a working status after the break, |
|
|
10855
|
Mon Jan 5 23:36:47 2015 |
ericq | Update | IOO | AO cable reconnected |
|
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|
10854
|
Mon Jan 5 20:17:26 2015 |
jamie | Configuration | CDS | GDS upgraded to 2.16.14 | I upgraded the GDS and ROOT installations
in /ligo/apps/ubuntu12
the control room workstations: |
|
|
10853
|
Mon Jan 5 18:15:18 2015 |
Jenne | Update | CDS | iscex reboot | Rana noted last week that TRX's value was
stuck, not getting to the lsc from iscex.
I tried restarting the individual models |
|
|
10852
|
Mon Jan 5 12:42:09 2015 |
ericq | Update | SUS | BS misbehaving | The BS was showing some excess motion.
I think I've fixed it. Order of operations:
The DC PIT bias from previous |
|
|
10851
|
Sun Jan 4 22:08:46 2015 |
rana | Update | IOO | MC loop characterizations: PZT/EOM crossover | * PMC + MC were unlocked when I came
in.
* I fiddled around some more with |
|
|
10850
|
Sun Jan 4 12:49:18 2015 |
Steve | Update | SUS | recent earthquakes | All suspensions were tripped. Damping were
restored. No obvious sign of damage. BS OSEM-UR
may be sticking ? |
|
|
10849
|
Tue Dec 30 20:35:59 2014 |
rana | Summary | PSL | PMC Tune Up |
Calibrated the Phase Adjust
slider for the PMC RF Modulation; did this
by putting the LO and RF Mod out on the TDS |
|
|
10848
|
Tue Dec 30 17:26:23 2014 |
rana | Update | PSL | Relaxation Osc and the NPRO Noise eater | I wonder if the variable bump around 100
kHz can be something about the NPRO and if
the bump we see is the closed loop response |
|
|
10847
|
Tue Dec 30 00:46:05 2014 |
rana | Update | IOO | Investigations into the mad PCDRIVE | Koji and I noticed that there was a comb*
of peaks in the MC and FSS at harmonics of
~37 kHz. Today I saw that this shows up (at |
|
|
10846
|
Mon Dec 29 21:30:25 2014 |
rana | Update | General | recovery |
Control room is at +66 F. Brrrr.
Alignment of input beam into the IMC
was wacky; locked on HOM.
Re-aligned |
|