| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6029
|
Mon Nov 28 18:53:35 2011 |
Den | Summary | WienerFiltering | seismic noise substraction | There is still a problem why GUR, STS signals
are poorly coherent to MC_L. But at
least we can see coherence at 2-5 Hz. It |
9x |
|
6028
|
Mon Nov 28 18:19:53 2011 |
kiwamu | Update | IOO | Stochmon seems working | Here is a 48 hours trend of the RFAM
monitor (a.k.a StochMon):
|
|
|
6027
|
Mon Nov 28 16:51:57 2011 |
kiwamu | Update | LSC | modulation frequency reset | I reset the modulation frequency to 11065910
Hz (#5530).
It had been at 11065399 Hz probably since |
|
|
6026
|
Mon Nov 28 16:46:55 2011 |
kiwamu | Update | CDS | c1sus is now up | I have restarted the c1sus machine and
burt-restored c1sus and c1mcs to the day
before Thank giving, namely 23rd of November. |
|
|
6025
|
Mon Nov 28 15:43:36 2011 |
steve | Update | RF System | EOM temp zoomed |
|
|
|
6024
|
Mon Nov 28 15:00:20 2011 |
kiwamu | Update | Green Locking | Y arm ALS engaged |
|
|
|
6023
|
Mon Nov 28 14:40:43 2011 |
Koji | Update | RF System | EOM temp driver |
|
|
|
6022
|
Mon Nov 28 14:27:35 2011 |
Jenne | Update | RF System | EOM temp driver | Here is 5 days of trend of the EOM temp
sensor and the heater driver monitor.
Unfortunately, it looks like we're regularly |
|
|
6021
|
Mon Nov 28 10:54:40 2011 |
rana | Update | SUS | F2A filter for MC | Our
approach to making the F2A or F2P filters |
|
|
6020
|
Mon Nov 28 06:53:30 2011 |
kiwamu | Update | CDS | c1sus shutdown | I have restarted the c1sus machine around
9:00 PM yesterday and then shut it down around
4:00 AM this morning after a little bit of |
|
|
6019
|
Sat Nov 26 19:37:12 2011 |
Den | Update | General | foton files | I've checked foton files for small
numbers. There are several other filters
besides " |
|
|
6018
|
Sat Nov 26 19:07:40 2011 |
kiwamu | Summary | Green Locking | AM trnasfer function of the Y end laser with doublin crystal |
|
|
|
6017
|
Sat Nov 26 10:55:40 2011 |
rana | Update | CDS | Beware of fancy filter modules |
Could be that what we're seeing
is the noise floor of the Direct Form II |
|
|
6016
|
Sat Nov 26 07:22:20 2011 |
suresh | Update | Computers | | c1sus has been shutdown so that the optics
dont bang around. This is because the
watch dogs are not working. |
|
|
6015
|
Sat Nov 26 07:18:11 2011 |
Suresh | Update | IOO | MC WFS related changes to c1ioo model | What I did:
I have changed
the c1ioo model such that the signals which |
|
|
6014
|
Sat Nov 26 02:15:42 2011 |
Mirko | Update | SUS | Not adaptive, still cool | [Rana, Mirko]
I tried out the virtual pendulum
idea today. The idea is to compensate the |
|
|
6013
|
Sat Nov 26 02:05:43 2011 |
Mirko | Update | CDS | Beware of fancy filter modules |
We replaced the complicated Cheby
filter module with three separate filter |
|
|
6012
|
Fri Nov 25 23:25:24 2011 |
Mirko | Update | IOO | F2A filter for MC |
|
|
|
6011
|
Fri Nov 25 22:11:12 2011 |
Mirko | Update | CDS | Beware of fancy filter modules | [Rana, Den, Mirko]
It seems you can shoot yourself in
the foot if your filter modules are too complex. |
|
|
6010
|
Fri Nov 25 20:41:48 2011 |
rana | Update | SUS | MC watchdogs | It seems as if someone was looking into
this on Wednesday, but as there's no elog,
I think probably not. |
|
|
6009
|
Fri Nov 25 20:03:05 2011 |
Koji | Update | IOO | Stochmon update | New RFAM mon calibration |
|
|
6008
|
Fri Nov 25 19:45:36 2011 |
Mirco, Den | Summary | SUS | Excess Noise in Digital Filtering |
|
|
|
6007
|
Fri Nov 25 18:45:31 2011 |
Den, Rana | Summary | SUS | Excess Noise in Digital Filtering | We are now trying to understand why the
coherence between SUS-X_SUSPOS_IN1 and SUS-X_SUSPOS_OUT
is lost below 1 Hz for X = MC1, MC2, MC3, |
|
|
6006
|
Fri Nov 25 17:52:28 2011 |
rana | Update | IOO | F2A filter for MC | Woo. Pretty crazy. The numerators should
only be ~10% larger than the denominator
below 1 Hz. Let's try again. |
|
|
6005
|
Fri Nov 25 12:46:13 2011 |
Mirko | Update | WienerFiltering | Wiener filtering tryout | Tried the wiener filter with the TF from
p.5900
Tried it out with the TFs from p.5900: |
|
|
6004
|
Thu Nov 24 20:22:42 2011 |
Mirko | Update | IOO | F2A filter for MC | I calculated the F2A filters for the input
mode cleaner optics as described in T010140-01-D
eq (4). On Ranas recommendation I added an |
|
|
6003
|
Thu Nov 24 15:48:27 2011 |
Illustrator | Update | elog | elogd gained an immunity to googlebot | |
|
|
6002
|
Thu Nov 24 15:27:15 2011 |
kiwamu | Update | CDS | c1iscey hardware rebooted | The
c1iscey machine crashed around 1:00 AM last
night and I did a hard-ware reboot |
|
|
6001
|
Thu Nov 24 14:42:57 2011 |
Koji | Update | elog | elogd gained an immunity to googlebot | I modified elogd.c as shown below in order
not to allow to display all of the entries
at once by specifying page number "0". |
|
|
6000
|
Thu Nov 24 14:05:10 2011 |
Koji | Update | PSL | HEPA@50% | I left the HEPA at the 50% level @5AM,
Nov 24 |
|
|
5999
|
Thu Nov 24 13:54:31 2011 |
Koji | Update | IOO | RFAMPD channels / EOM monitor channels added to DAQ | Those clips for the readouts were the ones
who popped out.
When I have restored the connections, |
|
|
5998
|
Thu Nov 24 12:45:12 2011 |
Zach | Update | IOO | RFAMPD channels / EOM monitor channels added to DAQ | Jenne |
|
|
5997
|
Thu Nov 24 10:27:07 2011 |
Jenne | Update | IOO | RFAMPD channels / EOM monitor channels added to DAQ | Here is a drawing of where the monitors
are coming from:
|
|
|
5996
|
Thu Nov 24 05:47:16 2011 |
Koji | Summary | IOO | Stochmon running | Now stochmon for 11MHz and 55MHz is running.
The calibration / noise measurement are going
to be post later... |
|
|
5995
|
Thu Nov 24 05:10:00 2011 |
Koji | Update | IOO | RFAMPD channels / EOM monitor channels added to DAQ | EOM TEMPMON and HEATER DRIVEMON have been
hooked up to the following channels.
C1:IOO-EOM_TEMPMON |
|
|
5994
|
Thu Nov 24 02:23:43 2011 |
Koji | Summary | General | GPIB<->WIFI | GPIB<->WIFI on Agilent Network Analyzer
4395A was broken.
The |
|
|
5993
|
Thu Nov 24 01:28:09 2011 |
kiwamu | Update | General | 1X8 sorensen came back |
|
|
|
5992
|
Wed Nov 23 22:58:33 2011 |
Koji | Update | General | c1iscaux2 is back (re: recovery from the power shutdown) | Keying again did not help to solve the
issue. I turned off the power at the back
of the crate, and turn it on again. |
|
|
5991
|
Wed Nov 23 18:28:09 2011 |
Koji | Update | IOO | RFAMPD channels / EOM monitor channels added to DAQ | The
following channels have been registered in
c1iool0 database, and are now recorded by |
|
|
5990
|
Wed Nov 23 16:55:57 2011 |
Suresh | Update | IOO | MC realigned | The PSL alignment into the MC was too poor
for the autolocker to engage. So retaining
the last coil slider settings on the MC_Align |
|
|
5989
|
Wed Nov 23 16:48:39 2011 |
Suresh | Update | General | cable cleanup | [Koji Suresh]
As part of the general lab clean
up we removed many unused BNC cables (long |
|
|
5988
|
Wed Nov 23 14:47:14 2011 |
Jenne | Configuration | Environment | AC in the IFO room was off | I turned it back on, maybe around 11am?
Definitely a little while before the 12:30
meeting. |
|
|
5987
|
Wed Nov 23 13:53:36 2011 |
Zach | Update | Green Locking | Sensor noise | The in-loop Y-Arm error signal looks
equal to the beat note noise divided by the
Y-Arm OL gain in the broadband-noise region |
|
|
5986
|
Wed Nov 23 02:34:28 2011 |
Mirko | Update | PEM | Seismic spectrum & Striptool | The Striptool for the BLRMS seismic channels
is running now. Channels are ( still ) recorded
as slow EPICS channels. |
|
|
5985
|
Wed Nov 23 00:30:55 2011 |
Zach | Update | elog | sucks | Tried the script 3 times and it didn't
come back. Pkill'd and then scripted. That
worked. |
|
|
5984
|
Wed Nov 23 00:30:14 2011 |
Zach | Update | RF System | EOM temperature controller trials | [Jenne, Zach]
We did some testing of the prototype
temperature controller. When I left it late |
|
|
5983
|
Wed Nov 23 00:00:53 2011 |
Zach | Summary | Green Locking | Some issues on the Y end green PDH locking |
|
|
|
5982
|
Tue Nov 22 23:06:13 2011 |
kiwamu | Update | SUS | MC watchdogs | [Rana / Mirko / Kiwamu]
|
|
|
5981
|
Tue Nov 22 20:45:21 2011 |
Mirko | Update | IOO | Measurement of the actuator matrix | Tried measuring the actuator matrix for
MC1.
With the watchdogs tripped I cut |
|
|
5980
|
Tue Nov 22 18:42:10 2011 |
kiwamu | Summary | Green Locking | Some issues on the Y end green PDH locking | [Rana / Kiwamu]
As
a part of the ALS noise budgeting we took |
|