| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
3276
|
Fri Jul 23 14:26:01 2010 |
Gopal | Update | Optic Stacks | Simple Frequency Response Measurements in COMSOL | Over the past couple days, I discovered
a simple, direct method for calculating
frequency responses with a combination |
|
|
3275
|
Fri Jul 23 12:33:51 2010 |
josephb | Update | CDS | megatron, c1iscex, c1sus firewalled | Kiwamu and I strung an ethernet cable from
the new 1X7 rack to the 1X3 rack. The cable
is labeled c1iscex-daq on both ends. |
|
|
3274
|
Fri Jul 23 10:16:44 2010 |
josephb | Update | CDS | Rerouted RFM around c1lsc, took RFM card out of c1lsc | I re-routed around the c1lsc machine
this morning. I turned the crate off,
and disconnected the transmission fiber from |
|
|
3273
|
Fri Jul 23 08:18:03 2010 |
josephb | Update | CDS | Not enough room in IO chassis for RFM card - need to swap PMC to PCIe adapters | The End IO chassis have small trenton boards,
which apparently only have 5 usuable PCI
slots, even though there are 6 on the board. |
|
|
3272
|
Fri Jul 23 08:15:59 2010 |
steve | Update | PSL | ref cavity ion pump | The ref cavity ion pump was running at
7.7kV instead of 5kV
This Digitel SPC-1 20 l/s ion pump |
|
|
3271
|
Fri Jul 23 00:13:11 2010 |
rana | Update | PSL | Problem NOT REALLY Solved | So...who was working around the PSL rack
this morning and afternoon? Looks like there was |
|
|
3270
|
Thu Jul 22 18:18:54 2010 |
Alberto | Update | PSL | Problem Solved |
|
|
|
3269
|
Thu Jul 22 15:59:29 2010 |
Alberto | Update | PSL | PSL front end machine |
|
|
|
3268
|
Thu Jul 22 14:07:20 2010 |
kiwamu | Update | PSL | PSL front end machine | It
looks like something wrong happened around
the PSL front end. One |
|
|
3267
|
Thu Jul 22 13:44:47 2010 |
Jenna | Update | PEM | Guralp seismometer | One of the Guralps [Gur2] has been taken
to the atf gyro lab, along with the breakout
box. |
|
|
3266
|
Thu Jul 22 08:07:27 2010 |
steve | Update | VAC | vent finished |
|
|
|
3265
|
Thu Jul 22 07:19:56 2010 |
Alberto | Update | Treasure | Monsters, LNVR, and Phase noise |
|
|
|
3264
|
Thu Jul 22 03:08:27 2010 |
Koji | Update | IOO | Vent and MC lock | Summary
- The vacuum chambers have been vented. |
|
|
3263
|
Thu Jul 22 01:02:08 2010 |
rana | Update | Treasure | Monsters, LNVR, and Phase noise | On
Picasa |
|
|
3262
|
Wed Jul 21 19:11:18 2010 |
Dmass | Update | Green Locking | locked | What did you use to filter the 2f components
from your error signal? A homemade low pass
or what? |
|
|
3261
|
Wed Jul 21 17:41:17 2010 |
Gopal | Configuration | Optic Stacks | Pictures of Stacks | Now that venting is complete, this is a
request for anyone who opens any chamber:
1) Please notify me immediately |
|
|
3260
|
Wed Jul 21 15:43:38 2010 |
Megan | Summary | PSL | Copper Layer Thickness on the Reference Cavity | Using the equation for thermal resistance
Rthermal = L/(k*A)
where k is the thermal conductivity |
|
|
3259
|
Wed Jul 21 12:41:31 2010 |
kiwamu | Update | VAC | vent finished | The vent
has been finished successfully in this morning. |
|
|
3258
|
Wed Jul 21 12:20:58 2010 |
Razib | Update | Phase Camera | Weekly update | This past week I have worked on the following:
1. Setting up the infrastructure
to do noise analysis: We added a temporary |
|
|
3257
|
Wed Jul 21 12:20:29 2010 |
josephb, kiwamu | Update | Computers | Megatron temporarily disconnected, c1iscex firewalled, green FE test | We are moving towards a first test of getting
Kiwamu's green locking signals into the new
front end at the new X end, as well as sending |
|
|
3256
|
Wed Jul 21 12:03:14 2010 |
Katharine, Sharmila | Update | WIKI-40M Update | weekly update | This past week, we levitated our small
cylindrical magnet (with the flag made from
heat shrink). Though the levitated |
|
|
3255
|
Wed Jul 21 11:57:59 2010 |
Gopal | Update | WIKI-40M Update | 7.14.10-7.21.10 Weekly Update | Summary of this week's activities:
7/14: Analytical calculation of Viton
spring constant; updated Viton values in |
|
|
3254
|
Tue Jul 20 23:52:36 2010 |
kiwamu | Update | VAC | update: slow vent has started | The
vent is still going on. At this moment the
pressure inside of the chambers is about |
|
|
3253
|
Tue Jul 20 18:29:43 2010 |
nancy | Update | IOO | QPD installed behind the MC2 |
Yesterday I installed teh QPD on
the table behind MC2, and observed teh signal |
|
|
3252
|
Tue Jul 20 17:38:16 2010 |
Gopal | Configuration | Optic Stacks | Stack Type Clarifications | Some clarification is warranted regarding
the different shapes of stacks. Corrections |
|
|
3251
|
Tue Jul 20 15:06:48 2010 |
josephb, bob | Omnistructure | General | New speakers in ceiling in control room | After the crane training, Bob attached
speakers to the ceiling right next to the
projector, for use with presentations. |
|
|
3250
|
Tue Jul 20 11:55:15 2010 |
Sharmila,Katharine | Update | elog | Maglev | We plotted the transfer functions for the
maglev control circuit and compared them
with the plots from the spectrum |
|
|
3249
|
Tue Jul 20 11:49:31 2010 |
Jenne | Update | SUS | Some Suspensions not damping | [Jenne, Koji]
I moseyed into the control room this
morning, to find ITMX and ITMY both with |
|
|
3248
|
Tue Jul 20 08:04:31 2010 |
steve | Configuration | VAC | slow vent has started | The PSL shutter was closed. The beam path
blocked two places. High voltage power supplies
to IOO and OMC PZT were checked to be off. |
|
|
3247
|
Mon Jul 19 21:47:36 2010 |
rana | Summary | DAQ | DAQ timing test | Since we now have a good measurement of
the phase noise of the Rb clock
Marconi locked to the Rb clock, I wanted |
|
|
3246
|
Mon Jul 19 16:11:17 2010 |
Gopal | Update | Optic Stacks | Eigenfrequency Analysis of Full Stack | Expanding on the single-layer model, I
added the second, third, and fourth layers
to the stack in COMSOL. Eigenfrequency |
|
|
3245
|
Mon Jul 19 14:16:01 2010 |
nancy, koji | Update | IOO | QPD Response Transfer Function |
|
|
|
3244
|
Mon Jul 19 14:14:03 2010 |
nancy, koji | Update | IOO | QPD Response Transfer Function | Friday night myself and Koji measured the
Transfer function of the QPD circuit at MC2
side using a chopper . Following was our |
|
|
3243
|
Mon Jul 19 13:51:09 2010 |
kiwamu | Update | CDS | TIming card at X end | [Joe, Kiwamu]
The timing slave in the IO |
|
|
3242
|
Sun Jul 18 20:50:03 2010 |
rana | Configuration | IOO | MC TRANS optics changed | To make the beam on the MC trans camera
bigger, I removed the lens + ND filter that
was in that path. |
|
|
3241
|
Fri Jul 16 23:53:27 2010 |
Rana | Update | PSL | Reference Cavity Insulation | From the trend, it seems that the Reference
Cavity's temperature servo is working fine
with the new copper foil. I was unable to |
|
|
3240
|
Fri Jul 16 20:25:52 2010 |
Megan | Update | PSL | Reference Cavity Insulation | Rana and I
1) took the temperature sensors off
the reference cavity; |
|
|
3239
|
Fri Jul 16 16:12:31 2010 |
Alberto | Configuration | Computers | c1susvme1/2 rebooted | Today I noticed that the FE SYNC counters
of c1susvme1/2 on the RFM network screen
were stuck at 16384. I tried to reboot the |
|
|
3238
|
Fri Jul 16 16:07:14 2010 |
josephb | Update | Computers | Possible solution for the last ADC | After talking with Jenne, I realized the
ADC card in the c1ass machine was currently
going unused. As we are short an ADC |
|
|
3237
|
Fri Jul 16 15:57:19 2010 |
josephb,kiwamu | Update | Computers | New X end FE and IO chassis work | We finished setting up the new X end front
end machine (still temporarily called c1scx),
and attached it to its IO chassis. |
|
|
3236
|
Fri Jul 16 15:39:27 2010 |
nancy | Update | IOO | Wavefront Sensors- switched off | I tuned the gain of WFS to 0 last night
at about 3am.
I turned it back on now. |
|
|
3235
|
Fri Jul 16 13:05:48 2010 |
Kyung-ha | Update | SUS | Late update for 7/13 Tue (Tip Tilts) | [Jenne & Kyung-ha]
We suspended the mirror to one of
the main frame with the ECD backplane we |
|
|
3234
|
Fri Jul 16 12:36:00 2010 |
Katharine, Sharmila | Update | elog | levitation | After last night's challenge (or inspiration),
we levitated our magnet this morning.
Since the nice Olympus camera is not currently |
|
|
3233
|
Thu Jul 15 23:51:47 2010 |
Mr. Maric | HowTo | SUS | Levitate me if you can | You guys must work harder.
|
|
|
3232
|
Thu Jul 15 19:27:04 2010 |
rana | Summary | PSL | RC trend after the insulation removal | |
|
|
3231
|
Thu Jul 15 19:13:03 2010 |
rana | Update | IOO | MC_F check | Sometimes I like to plot the spectrum of
MC_F. Its a good diagnosis of whether something
is wrong. |
|
|
3230
|
Thu Jul 15 16:57:31 2010 |
josephb, kiwamu | Update | CDS | The temporarily named c1scx machine getting ready to connect to IO chassis | This is the machine which will be the new
x end front end machine. Its IP is
192.168.113.86. |
|
|
3229
|
Thu Jul 15 16:16:51 2010 |
Alberto | Configuration | LSC | PRC and SRC length adjustements |
|
|
|
3228
|
Thu Jul 15 15:57:10 2010 |
Koji | Configuration | LSC | PRC and SRC length adjustements | Tell me whether it is correct or not. Otherwise
I won't be able to sleep tonight.
|
|
|
3227
|
Thu Jul 15 12:21:08 2010 |
Alberto | Configuration | LSC | PRC and SRC length adjustements | Lately I've been trying to calculate the
corrections to the recycling cavity lengths
that would compensate for the phase that |
8x |