| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
9131
|
Mon Sep 16 14:11:47 2013 |
rana | Update | LSC | MICH calbration | There doesn't seem to be any
coherence among the different directions
of ground motion (as expected from seismic |
|
|
9130
|
Mon Sep 16 13:11:15 2013 |
Evan | Update | Computer Scripts / Programs | Comsol 4.3b upgrade | Comsol 4.3b is now installed under /cvs/cds/caltech/apps/linux64/COMSOL43b.
I've left the existing Comsol 4.2 installation |
|
|
9129
|
Mon Sep 16 10:57:11 2013 |
Steve | Update | VAC | RGA scan at day 41 |
|
|
|
9128
|
Fri Sep 13 19:22:01 2013 |
Masayuki | Update | LSC | MICH calbration |
I made sure the yesterday's
result was collect. I measured not only the |
|
|
9127
|
Thu Sep 12 23:36:25 2013 |
Masayuki | Update | LSC | MICH calbration | For Modelling of the OLTF, I measured the
response of the BS suspension. I used the
OSEM sensor for measurement. The attatchment1 |
|
|
9126
|
Thu Sep 12 01:06:09 2013 |
Jenne | Update | ASC | SRCL ASS implemented | I have modified the ASS model to also have
an ASS for SRCL. The input options
are POPDC, POP110, AS110. I suppose |
|
|
9125
|
Thu Sep 12 00:07:26 2013 |
Masayuki | Summary | Green Locking | ALS locking in both arms |
|
|
|
9124
|
Wed Sep 11 23:43:10 2013 |
Koji | Summary | Green Locking | ALS locking in both arms | What was the beat freq for each arm?
The HF noise level depends on the
frequency of the beat note. |
|
|
9123
|
Wed Sep 11 23:34:37 2013 |
Masayuki | Summary | Green Locking | ALS locking in both arms | [manasa, masayuki]
We locked the XARM and YARM with
using ALS control loop and |
|
|
9122
|
Wed Sep 11 17:35:38 2013 |
Jenne | Update | LSC | ALS requirement | I have done a quickie look at Optickle
to see how the linewidth of an arm cavity
changes versus the configuration. |
|
|
9121
|
Tue Sep 10 17:35:50 2013 |
Masayuki, Manasa | Update | LSC | MICH calbration |
|
|
|
9120
|
Tue Sep 10 15:43:01 2013 |
Steve | Update | VAC | TP3' dry pump is replaced |
|
|
|
9119
|
Tue Sep 10 09:18:22 2013 |
Steve | Update | VAC | dry pump is getting loud |
TP3 foreline's dry pump is
getting noisier and noisier. Turbo |
|
|
9118
|
Mon Sep 9 20:46:28 2013 |
Masayuki | Update | LSC | MICH calbration | [Manasa, Masayuki]
We took a bunch of measurements.
Transfer function and power spectrum using |
|
|
9117
|
Mon Sep 9 15:33:06 2013 |
Steve | Update | VAC | vertex crane repair is scheduled |
|
|
|
9116
|
Fri Sep 6 23:01:08 2013 |
Koji | Update | LSC | Stable DRMI lock was recovered from the impact on the RF system modification | Summary
|
|
|
9115
|
Fri Sep 6 09:27:10 2013 |
Steve | Update | VAC | 31 days after pumpdown |
|
|
|
9114
|
Thu Sep 5 21:07:09 2013 |
Jenne | Update | LSC | Started work on logic for triggering | I want something like an "AND"
for the degree of freedom triggers.
Koji and I talked through an idea, and I |
|
|
9113
|
Thu Sep 5 15:18:41 2013 |
Jenne | Update | LSC | Free swinging DRMI power buildups | I have the DRMI free swinging right now,
since it's not really locking. Looking
at these time series in the attached pdf, |
|
|
9112
|
Thu Sep 5 11:19:33 2013 |
Jenne | Update | SUS | PRM side |
|
|
|
9111
|
Thu Sep 5 10:47:58 2013 |
Steve | Update | VAC | vertex crane folding issue |
[Fred Goldbar, Mike Gerfen,
Dennis Coyne and Steve] |
|
|
9110
|
Thu Sep 5 10:28:17 2013 |
Steve | Update | SUS | PRM side | I think the crane repair guy accidentally
stepped on the BSC support beam.
PRM side is not coming down. |
|
|
9109
|
Thu Sep 5 01:55:29 2013 |
Jenne | Update | LSC | LSC model upated to have AS110 channels, violin filter triggering | I have
modified the c1lsc model so that I have access
to the AS110 channels in the triggering and |
|
|
9108
|
Thu Sep 5 00:40:33 2013 |
rana | Update | SUS | MC2 tickler turned OFF |
You're right - down turns it
on. Still, the fact that the same tickle |
|
|
9107
|
Wed Sep 4 22:14:35 2013 |
Jenne | Update | SUS | MC2 tickler turned OFF |
|
|
|
9106
|
Wed Sep 4 21:44:54 2013 |
Not Jenne | Update | Electronics | RF distribution box: Reinstalled | Temporary fix for the switch: give a bit
of oil to the button
Permanent fix: buy better switches. |
|
|
9105
|
Wed Sep 4 20:47:15 2013 |
manasa | Update | LSC | Calibrated in-loop MICH noise | To estimate in-loop MICH noise:
(a) Calibrate MICH_ERR:
1. Lock the arms for IR using POX11 |
|
|
9104
|
Wed Sep 4 20:39:23 2013 |
rana | Update | SUS | MC2 tickler turned OFF |
|
|
|
9103
|
Wed Sep 4 17:22:09 2013 |
Jenne | Update | LSC | Demod phases for RFPDs | I checked the demod phases for AS55, POP110,
and all the REFL PDs.
AS55: I locked MICH, and shook |
|
|
9102
|
Wed Sep 4 16:08:22 2013 |
manasa | Update | SUS | MC2 tickler turned OFF | [Jenne, Manasa]
While we were trying to relock the
MC after Jenne put back the RF box, we found |
|
|
9101
|
Wed Sep 4 16:06:40 2013 |
Jenne | Update | Electronics | RF distribution box: Reinstalled | I have reinstalled the RF distribution
box, as well put in the AS110 demod board.
I plugged everything back in, and turned |
|
|
9100
|
Tue Sep 3 21:10:36 2013 |
Jenne | Configuration | Electronics | putting together a 110 MHz LSC demod board for AS |
|
|
|
9099
|
Tue Sep 3 21:08:13 2013 |
Jenne | Update | Electronics | RF distribution box: 110 MHz LO options | The RF distribution box is still on the
bench, so again, don't |
|
|
9098
|
Tue Sep 3 14:23:21 2013 |
Steve | Update | PEM | earthquakes | ~Vancuver, Canada earthquakes: magnitude
6, 5 and more shaking
|
|
|
9097
|
Tue Sep 3 10:54:33 2013 |
Steve | HowTo | General | How To Coil Cables |
|
|
|
9096
|
Mon Sep 2 18:06:21 2013 |
Jenne | Update | Electronics | RF distribution box: 110 MHz LO options | After scrounging for parts, and opening
up the box, I have modified my proposal to
the following: |
|
|
9095
|
Mon Sep 2 16:46:32 2013 |
Jenne | Update | Electronics | RF distribution box is on the bench | I have pulled the RF distribution box out
of the rack, so I can look at it, and modify
it to have 2 110 MHz spigots. I'm going to |
|
|
9094
|
Mon Sep 2 15:22:57 2013 |
Jenne | Update | PSL | PMC relocked | The PMC was locked on an LG 10 mode
(or something like it), for at least the
last 8 hours. I relocked it on the |
|
|
9093
|
Mon Sep 2 03:51:14 2013 |
rana | HowTo | General | How To Coil Cables | http://youtu.be/pEd7ru24Vx0 |
|
|
9092
|
Fri Aug 30 14:31:57 2013 |
Steve | Update | General | cleaning up | I cleaned up around MC2 and 1Y1 area this
morning.
ETMY NPRO moved from the side to |
|
|
9091
|
Fri Aug 30 11:00:46 2013 |
Manasa | Update | General | Series of earthquakes | There has been a series of earthquakes |
|
|
9090
|
Fri Aug 30 08:08:29 2013 |
steve | Update | safety | fire horns-flashers tested OK |
We had fire alarm tests
and evacuation drills at 1:30pm yesterday. |
|
|
9089
|
Fri Aug 30 01:01:28 2013 |
rana, nic | Summary | Computer Scripts / Programs | aLIGO Noise Budget code installed and running | Chris Wipf has been developing a new Noise
Budget code that allows us to use our existing
Simulink models to handle all of the noise |
|
|
9088
|
Thu Aug 29 17:25:50 2013 |
Jamie | Update | SUS | SUS medm screen upgrade | Rana asked me to look at the SUS MEDM screen
upgrade situation, and provide an upgrade
prescription. Unfortunately there not |
|
|
9087
|
Wed Aug 28 23:09:55 2013 |
jamie | Configuration | CDS | code to generate host IPC graph | |
|
|
9086
|
Wed Aug 28 19:47:28 2013 |
jamie | Configuration | CDS | front end IPC configuration |
|
|
|
9085
|
Wed Aug 28 15:41:42 2013 |
Steve | Update | VAC | RGA scan at day 23 | Valve configuration: Vacuum Normal
pd76-m-d23
|
|
|
9084
|
Wed Aug 28 11:23:41 2013 |
Steve | Update | VAC | crane repair sheduled |
|
|
|
9083
|
Wed Aug 28 11:15:02 2013 |
Steve | Update | Green Locking | Xend green layout corrections |
|
|
|
9082
|
Wed Aug 28 07:33:51 2013 |
manasa | Update | LSC | MICH locking | I wanted to measure the OLTF of MICH.
What I did:
1. Ran LSC offsets script to zero |
|