| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2217
|
Mon Nov 9 15:11:02 2009 |
Alberto | Update | LSC | Everything put back as it was |
|
|
|
2218
|
Mon Nov 9 15:21:37 2009 |
Jenne | Update | General | Drill Press is down for the count |
|
|
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2219
|
Mon Nov 9 16:32:36 2009 |
Alberto | Frogs | Environment | Shot of the white board yesterday before erasing | Yesterday Rana and I needed some room on
the white board in the Control Room. We had
to erase some of the stuff present on the |
|
|
2220
|
Mon Nov 9 18:27:30 2009 |
Alberto | Frogs | Computers | OMC DCPD Interface Box Disconnected from the power Supply | This afternoon I inadvertently disconnected
one of the power cables coming from the power
supply on the floor next to the OMC cabinet |
|
|
2221
|
Mon Nov 9 18:32:38 2009 |
rob | Update | Computers | OMC FE hosed | It won't start--it just sits at Waiting
for EPICS BURT, even though the EPICS is
running and BURTed. |
|
|
2222
|
Mon Nov 9 19:04:23 2009 |
rob | Update | Computers | OMC FE hosed |
|
|
|
2223
|
Mon Nov 9 19:09:09 2009 |
Jenne | Update | PEM | Noise floor of the Ranger Seismometer | To estimate the noise floor of the Ranger,
Rana and I locked the mass on the seismometer,
so there will be no (aka minimal) signal |
|
|
2224
|
Mon Nov 9 19:44:38 2009 |
rob, rana | Update | Computers | OMC FE hosed |
We found that someone had set the
name of megatron to scipe11. This is the |
|
|
2225
|
Tue Nov 10 10:51:00 2009 |
josephb, alex | Update | Computers | Megatron on, powercycled c1omc, and burt restored from 3am snapshot | Last night around 5pm or so, Alex had remotely
logged in and made some fixes to megatron.
First, he changed the local name |
|
|
2226
|
Tue Nov 10 13:02:36 2009 |
Alberto | Update | LSC | X and Y Arm Cavity Poles Measurement | From fitting the arm cavity transfer functions
I got the following values for the cavity
pole frequencies. |
|
|
2227
|
Tue Nov 10 17:01:33 2009 |
Alberto | Configuration | IOO | c1ioovme and c1iool0 rebooted | This afternoon, while I was trying to add
the StochMon channels to the frames, I rebooted
the c1ioovme and c1iool0. |
|
|
2228
|
Tue Nov 10 17:49:20 2009 |
Alberto | Metaphysics | Computers | Test Point Number Mapping | I found this interesting entry by Rana
in the old (deprecated) elog : here
I wonder if Rolf has ever written |
|
|
2229
|
Tue Nov 10 19:19:57 2009 |
Alberto | Update | ABSL | Rotated polarizer on the PSL table, along the MC input pick off beam | Aligning the beam for the PLL of the AbsL
Experiement I rotated the polarizer along
the path of the MC Input pick off beam (= |
|
|
2230
|
Tue Nov 10 19:21:53 2009 |
Alberto | Update | ABSL | PLL Alignment | I've been trying to lock the PLL for the
AbsL Experiment but I can't see the beat
(between the auxiliary NPRO and the PSL). |
|
|
2231
|
Tue Nov 10 21:46:31 2009 |
rana | Summary | Computers | Test Point Number Mapping |
|
|
|
2232
|
Wed Nov 11 00:55:47 2009 |
Jenne | Update | Adaptive Filtering | Terms put on some ADC inputs | Mostly a note to self: I have put
terminators on the ADC inputs which are usually
the PEM-SEIS-GUR2_(XYZ) channels. Since |
|
|
2233
|
Wed Nov 11 01:33:52 2009 |
pete | Update | CDS | RCG ETMY code update | I've added the side coil to the model
controller and plant, and the oplev quad
to the model controller and plant. After |
|
|
2234
|
Wed Nov 11 09:48:04 2009 |
steve | Update | IOO | where is IOO-RFAMPD_DCMON ? | RFAMPD_DCMON disappered on Nov 5, 2009 |
|
|
2236
|
Wed Nov 11 12:29:44 2009 |
Alberto | Frogs | PSL | MC Locked on the wrong mode? | This morning, after Steve pointed out that
the readout RFAMPD_DC was zero, I thought
of realigning the beam on the photodiode. |
|
|
2237
|
Wed Nov 11 12:50:10 2009 |
Jenne | Update | PEM | Seismometer Noise Characteristics | The attached plot shows the spectra of
the 3 Z axes of the 3 seismometers we have
(this data is from ~20Aug2009, when the Ranger |
|
|
2238
|
Wed Nov 11 15:04:52 2009 |
Alberto | Update | ABSL | Working on the AP table | I've opened the AP table and I'm working
on it. |
|
|
2239
|
Wed Nov 11 16:18:57 2009 |
Alberto | Update | ABSL | Working on the AP table |
|
|
|
2240
|
Wed Nov 11 17:10:51 2009 |
Jenne | Update | ABSL | Working on the AP table |
|
|
|
2241
|
Wed Nov 11 17:33:54 2009 |
Koji | Update | ABSL | Working on the AP table | Yes it did.
For long time, the crystal temperature
C1:PSL-126MOPA_LTMP was 43~46deg. Now |
|
|
2242
|
Wed Nov 11 18:43:57 2009 |
rana, koji | HowTo | Photos | Illuminated Paintbrush Technique | |
|
|
2243
|
Wed Nov 11 20:46:07 2009 |
pete | Update | CDS | RCG ETMY phase I update | The .mdl code for the mdc and
mdp |
|
|
2244
|
Wed Nov 11 20:57:06 2009 |
kiwamu | Update | Electronics | Multi-resonant EOM --- LC tank circuit --- | I have been working about multi-resonant
EOM since last week.
In order to characterize the behavior |
|
|
2245
|
Wed Nov 11 21:30:20 2009 |
Haixing | Update | General | magnetic levitation modelling files uploaded to svn | I have created a directory under the svn.
The link is https://nodus.ligo.caltech.edu:30889/svn/trunk/docs/haixing |
|
|
2246
|
Thu Nov 12 01:18:34 2009 |
haixing | Update | SUS | open-loop transfer function of mag levi system (comparison between simulink and measurement) | I built a Simulink model of the magnetic
levitation system and try to explain
the dip in the open-loop transfer function |
|
|
2247
|
Thu Nov 12 02:02:18 2009 |
rana | Summary | LSC | Arm Locking with no feedback to the ETM or ITM | Steps:
1) Turn off feedback to ETMY (the
ETMY button on the LSC screen). |
|
|
2248
|
Thu Nov 12 09:43:29 2009 |
steve | Update | PEM | construction has started at CES | The concrete floor cutting has begun
next door at CES |
|
|
2249
|
Thu Nov 12 10:45:02 2009 |
Alberto | Update | PSL | Abandoned Frequency Generator | This morning I found a frequency generator
connected to something on the PSL table sitting
on the blue step next to the sliding doors. |
|
|
2250
|
Thu Nov 12 10:45:36 2009 |
Alberto | Update | ABSL | Working on the AP table | I've opened the AP table and I'm working
on it.
Also auxiliary NPRO turned on and |
|
|
2251
|
Thu Nov 12 11:19:10 2009 |
Koji | Update | PSL | Abandoned Frequency Generator | Last night there was an activity for a
calibratuon work, which I helped. I can take
care of the FG. |
|
|
2252
|
Thu Nov 12 11:34:38 2009 |
Alberto | Update | ABSL | Working on the AP table |
|
|
|
2253
|
Thu Nov 12 12:50:35 2009 |
Alberto | Update | Computers | StochMon calibrated channels added to the data trend | I added the StochMon calibrated channels
to the data trend by including the following
channel names in the C0EDCU.ini file: |
|
|
2254
|
Thu Nov 12 12:51:45 2009 |
Alberto | Update | ABSL | Working on the AP table |
|
|
|
2255
|
Thu Nov 12 15:40:27 2009 |
josephb, koji, peter | Update | Computers | ETMY and Megatron test take 1 | We connected megatron to the IO chassis
which in turn was plugged into the rest of
the ITMY setup. We had manually turned |
|
|
2256
|
Thu Nov 12 16:13:05 2009 |
Alberto | Update | PSL | MC Trans Offset | On Rana's suggestion I checked the MC
transmission QPD (C1:IOO-MC_TRANS_SUM). I
found that the readout is almost zero when |
|
|
2257
|
Thu Nov 12 16:53:59 2009 |
Alberto | Update | ABSL | Working on the AP table |
|
|
|
2258
|
Thu Nov 12 17:15:43 2009 |
Koji | Update | PSL | MC Trans Offset | OK. I have been keeping my eyes on the
MC transmission. In deed, the MC trans has
been well kept at around 7.7 since the last |
|
|
2259
|
Thu Nov 12 17:24:29 2009 |
Koji, Joe, Peter | Configuration | CDS | ETMY CDS test started | We started the test of the new CDS system
at ETMY.
The plan is as follows: |
|
|
2260
|
Thu Nov 12 17:42:04 2009 |
Koji | Update | PSL | MC Trans Offset | PC_DRIVE is also improving after the last
PSL work!
|
|
|
2261
|
Thu Nov 12 18:10:27 2009 |
Alberto | Update | ABSL | PLL Locked | I locked the PLL and made some first measuremtns
of the spectrum of the error signal. I'll
post them later. |
|
|
2262
|
Fri Nov 13 03:38:47 2009 |
kiwamu | Update | Electronics | multi-resonant EOM --- impedance of LC tank circuit ---- | I have measured the impedance of the LC
tank circuit which I referred on my
last entry. |
|
|
2263
|
Fri Nov 13 05:03:09 2009 |
kiwamu | Update | Electronics | multi-resonant EOM --- input impedance of LC tank ---- | I measured the input impedance of the
LC tank circuit with the transformer. The |
|
|
2264
|
Fri Nov 13 09:47:18 2009 |
josephb | Update | Computers | Megatron status lights lit | Megatron's top fan, rear ps, and temperature
front panel lights were all lit amber this
morning. I checked the service manual, |
|
|
2265
|
Fri Nov 13 09:54:14 2009 |
josephb | Configuration | Computers | Megatron switched to tcsh | I've changed megatron's controls account
default shell to tcsh (like it was before).
It now sources cshrc.40m in /cvs/cds/caltech/ |
|
|
2266
|
Fri Nov 13 10:28:03 2009 |
josephb, alex | Update | Computers | Megatron is back to its old self | I called Alex this morning and explained
the problems with megatron.
Turns out when he had been setting |
|
|
2267
|
Fri Nov 13 14:04:27 2009 |
josephb, koji | Update | Computers | Updated wiki with RCG instructions/tips | I've placed some notes pertaining to what
Koji and I have learned today about getting
the RCG code working on the 40m wiki at: |
|