| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
8038
|
Fri Feb 8 17:15:56 2013 |
Jenne | Update | RF System | MC REFL Photodiode transimpedance | This measurement was done already about
a week ago, in elog 7984.
Can you please describe why the numbers for |
|
|
8039
|
Fri Feb 8 17:41:34 2013 |
Jenne | Update | Locking | PRMI work |
[Yuta, Jenne]
After much tweaking of the alignment |
|
|
8043
|
Fri Feb 8 20:05:15 2013 |
Jenne | Update | Locking | PRMI work | I fixed up the POP path so that there is
no clipping, so that Yuta can take a cavity
mode scan. |
|
|
8054
|
Mon Feb 11 12:49:54 2013 |
Jenne | Summary | LSC | Resonant freq change - why? (and passive TT mode freqs) |
|
|
|
8058
|
Mon Feb 11 16:29:33 2013 |
Jenne | Update | Locking | Temp oplev for PR2; ITMX temporarily has no oplev | [Yuta, Jenne]
In an effort to see what is going
on with the beam spot motion, and to investigate |
|
|
8071
|
Tue Feb 12 20:57:47 2013 |
Jenne | Update | Alignment | IFO alignment in prep for in-air PRMI | We should check MC spot positions to see
what they are.
Also, I'm not thrilled about the |
|
|
8076
|
Wed Feb 13 14:21:19 2013 |
Jenne | Update | Locking | PRC cavity gains |
|
|
|
8077
|
Wed Feb 13 16:31:08 2013 |
Jenne | Update | PSL | PMC pitch input tuned, MC yaw input tuned | [Jenne, Yuta]
I looked at PMCR camera on the MC1
tv, and tweaked up the beam going into the |
|
|
8081
|
Wed Feb 13 22:09:26 2013 |
Jenne | Update | Alignment | REFL is not clipped | We need to calculate whether this level
of astigmatism is expected from the new active
TT mirrors, but |
|
|
8086
|
Fri Feb 15 01:51:43 2013 |
Jenne | Summary | Alignment | IFO aligned and ready for PRMI locking |
Yuta and Manasa, you guys are awesome!
Small, inconsequential point: |
|
|
8116
|
Wed Feb 20 18:35:42 2013 |
Jenne | Update | Alignment | New in-vac alignment procedure | I have updated the vacuum checklist for
in vacuum alignment. Please take a
look (https://wiki-40m.ligo.caltech.edu/vent/checklist) |
|
|
8117
|
Wed Feb 20 18:53:48 2013 |
Jenne | Update | Alignment | IFO ready for doors, then pumping | [Yuta, Manasa, Sendhil, Jenne, Steve, Jamie,
Koji, Evan]
|
|
|
8126
|
Thu Feb 21 12:56:38 2013 |
Jenne | Update | CDS | c1iscex dead again | c1iscex is dead again. Red lights,
no "breathing" on the FE status
screen. |
|
|
8127
|
Thu Feb 21 13:34:35 2013 |
Jenne | Update | Treasure | IR card removed |
|
|
|
8145
|
Sat Feb 23 14:52:03 2013 |
Jenne | Update | LSC | ETMYT camera back to normal |
|
|
|
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 |
|
|
8163
|
Mon Feb 25 22:30:40 2013 |
Jenne | Bureaucracy | General | action items for PRFPMI |
CDS:
- Check out ASS |
|
|
8165
|
Tue Feb 26 01:49:27 2013 |
Jenne | Update | Locking | PRMI locked | [Jenne, Yuta]
We began the evening, after alignment
of all optics was good (arms flashing, PRC |
|
|
8171
|
Tue Feb 26 15:32:47 2013 |
Jenne | Update | Locking | FPMI locked |
|
|
|
8175
|
Wed Feb 27 00:08:43 2013 |
Jenne | Update | IOO | Meditations on converting TT channels to be more SUS-like | Jamie and I have had a few back-and-forths
on this, but I wanted to write down my thoughts
on the parts of the SUS infrastructure that |
|
|
8176
|
Wed Feb 27 00:56:01 2013 |
Jenne | Update | ASS | Motivation for reactivating the ASS | I am putting a little bit of brain power
into reviving the ASS, and I want to write
down what the motivation is, and what the |
|
|
8178
|
Wed Feb 27 02:21:55 2013 |
Jenne | Update | ASS | Motivation for reactivating the ASS | I have modified the MeasureSpotPositions.py
script to accept the arms as valid cavities
(it used to give an error "Sorry, this |
|
|
8179
|
Wed Feb 27 02:44:39 2013 |
Jenne | Update | Locking | DRFPMI flashes | Before Yuta left, I asked him to restore
all optics to last saved values, to avoid
hysteresis. |
|
|
8180
|
Wed Feb 27 02:52:40 2013 |
Jenne | Omnistructure | SAFETY | Back door unlocked | Did someone unlock the back door by the
(unofficial) bike storage lately? Out
of habit, I checked the door behind me while |
|
|
8202
|
Thu Feb 28 14:51:43 2013 |
Jenne | Update | PEM | "Rock Monster" causing low frequency noise | Manasa and I have been wondering why the
low frequency seismic noise has been different
in the last few days/weeks. I went |
|
|
8203
|
Fri Mar 1 01:17:06 2013 |
Jenne | Update | LSC | Xarm oscillation | There is an oscillation in the Xarm at
631Hz, which is not in the Yarm. There
is a small peak in POY11_I at this frequency, |
|
|
8204
|
Fri Mar 1 02:49:34 2013 |
Jenne | Update | ASS | Arm A2L measurement | I haven't finished debugging the scripts
so that the measurement is fully automatic,
like the MC, but I did measure the arm spot |
|
|
8215
|
Sun Mar 3 22:16:46 2013 |
Jenne | Update | LSC | LSC whitening triggering started | [Jenne, Annalisa]
We have started working on writing
the c-code to parse the LSC input matrix, |
|
|
8229
|
Tue Mar 5 01:43:04 2013 |
Jenne | Update | ASS | Arm A2L measurement script finished | In either .../scripts/XARM or ...../scripts/YARM
run either A2L_XARM or A2L_YARM.
The wrapper script will, like the |
|
|
8234
|
Tue Mar 5 18:36:27 2013 |
Jenne | Update | LSC | LSC whitening triggering started | More effort at debugging the LSC whitening.
Today I tried moving things over
to the c1tst model, which runs on the y-end |
|
|
8246
|
Wed Mar 6 21:58:39 2013 |
Jenne | Update | Electronics | POX whitening was fine all along | After my investigations this afternoon
(with help from Sendhil and Shivaraj), |
|
|
8249
|
Thu Mar 7 11:43:15 2013 |
Jenne | Update | Electronics | POX and POY whitening DC gain left low | Manasa and Jan were having trouble locking
the Yarm, and asked me to take a look at
it. After a good long time of trying |
|
|
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 |
|
|
8253
|
Thu Mar 7 18:41:03 2013 |
Jenne | Update | Electronics | POX whitening was fine all along | Here are the transfer functions that we
took back in 2011 (see elog
4915 and replies) for POX: |
|
|
8258
|
Fri Mar 8 13:42:35 2013 |
Jenne | Update | ABSL | BS installed on ITMY table | Re: POY beam reduction.
We are able to lock the Yarm with
the beam / gain as it is. I had thought |
|
|
8260
|
Fri Mar 8 16:02:52 2013 |
Jenne | Update | Alignment | Getting closer to beam centering on Yarm | I'm working on getting the input beam centered
on the Yarm optics. To do this, I measured
the spot positions, move the tip tilts, realign |
|
|
8268
|
Mon Mar 11 14:10:05 2013 |
Jenne | Update | Environment | MC suspensions moved by this morning's earthquakes | None of the suspensions
All suspensions were tripped (edited
by Manasa; see elog |
|
|
8269
|
Mon Mar 11 15:52:46 2013 |
Jenne | Update | IOO | MC spots centered, WFS realigned | Looking more into the MC, it appears that
no spot centering was done after the power
attenuation optics were removed (see elog |
|
|
8272
|
Mon Mar 11 19:01:21 2013 |
Jenne | Update | PEM | proposed seismometer locations | This is my interpretation of where Steve
is proposing to place the seismometers (he
wrote ITMX southwest, but I'm pretty sure |
|
|
8274
|
Tue Mar 12 00:35:56 2013 |
Jenne | Update | Computers | FB's RAID is beeping | [Manasa, Jenne]
Manasa just went inside to recenter
the AS beam on the camera after our Yarm |
|
|
8275
|
Tue Mar 12 00:45:50 2013 |
Jenne | Update | IOO | MC weird again | ~20 minutes ago, maybe right around the
time the fb's RAID died (elog 8274)
the mode cleaner started behaving weirdly |
|
|
8277
|
Tue Mar 12 11:49:18 2013 |
Jenne | Update | IOO | MC weird again | [Manasa, Annalisa, Jenne]
The MC wasn't locking on TEM00 this
morning, and the WFS kept pulling the MC |
|
|
8279
|
Tue Mar 12 14:02:22 2013 |
Jenne | Update | Alignment | Beam drift - mystery partially solved? | Steve just told those of us in the control
room that the custodian who goes into the
IFO room regularly steps on the blue support |
|
|
8281
|
Wed Mar 13 02:48:13 2013 |
Jenne | Update | IOO | MC all better | Koji reminded me (again....this is probably
the 2nd or 3rd time I've "discovered"
this, at least) that the script |
|
|
8290
|
Wed Mar 13 21:04:37 2013 |
Jenne | Update | Green Locking | PSL green cleaned up | Both X and Y green are aligned such that
the arm beams hit the broadband PD.
Also, the 4th port of the combining BS for |
|
|
8291
|
Thu Mar 14 04:20:54 2013 |
Jenne | Update | Green Locking | Ybeat attempt | I dedicated my evening to trying to get
the Ygreen beatnote (the idea being to then
get the Xgreen beatnote). |
|
|
8293
|
Thu Mar 14 13:38:29 2013 |
Jenne | Update | Green Locking | PSL green cleaned up | I ran a cable to the GTRX camera.
It is now input #2. The videoswitch
script input naming is modified to match |
|
|
8294
|
Thu Mar 14 16:41:48 2013 |
Jenne | Update | Green Locking | Yarm ALS laser is funny / dying |
|
|
|
8297
|
Thu Mar 14 20:22:33 2013 |
Jenne | Update | Green Locking | Xbeat attempt | I aligned the Xgreen and PSL green to overlap
on the X beat PD, and reconnected the splitter
which combines the X and Y beat signals and |
|
|
8298
|
Fri Mar 15 01:57:02 2013 |
Jenne | Update | Green Locking | X arm green locked in TEM00 | This work earlier today had required moving
the harmonic separator back closer to its
original position, so that the green could |
|