| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
668
|
Mon Jul 14 19:15:43 2008 |
Alberto | Update | General | abs cavity length measurement experiment | Lately I've been dealing with the alignment
of the interferometer to have a good beam
spot at the AS port. Today the alignment |
|
|
669
|
Mon Jul 14 21:34:10 2008 |
Alberto | Update | General | abs cavity length measurement experiment | [quote]Lately I've been dealing with the alignment
of the interferometer to have a good beam
spot at the AS port. Today the alignment |
|
|
683
|
Wed Jul 16 16:59:07 2008 |
Alberto | Update | General | Aligment | I think the two beams are aligned again -
they both pass the Faraday, they match at
the irises and all along the optical path |
|
|
724
|
Wed Jul 23 16:31:02 2008 |
Alberto | Configuration | Computers | Megatron connected | Joe, Rana, Alberto,
we found out the password for Megatron so |
|
|
725
|
Wed Jul 23 17:19:48 2008 |
Alberto | Configuration | Computers | Megatron connected | We changed the IP address. Ther new one is
131.215.113.95.
|
|
|
798
|
Tue Aug 5 10:56:05 2008 |
Alberto | Configuration | General | ITMX chamber opened and mirror released | D-Mass, Steve, Rana, Koji, Yoichi, Alberto,
We opened the ITMX chamber to check the optics
after last week earthquake. In particular, |
|
|
800
|
Tue Aug 5 17:56:23 2008 |
Alberto | Configuration | General | SRM and PRM inspection | Yoichi, Koji, Rana, Steve, Alberto
Today we opened the [B]BSC[/B] to inspect |
|
|
805
|
Wed Aug 6 19:01:15 2008 |
Alberto | Update | General | ITMX and SRM OSEM post-earthquake diagnostic | Koji, Yoichi, Alberto
Today we reset the OSEMs on ITMX and SRM |
|
|
916
|
Wed Sep 3 18:45:01 2008 |
Alberto | Configuration | | PD3 gain | Alberto, Yoichi,
We found that the PD3 servo was unstable |
|
|
940
|
Wed Sep 10 19:53:53 2008 |
Alberto | Update | General | abs length experiment | Update of the last days work on the experiment
to measure the absolute length of the cavities.
|
|
|
944
|
Fri Sep 12 11:09:20 2008 |
Alberto | Update | General | abs cavity length experiment | I'm leaving the lab for a couple of hours.
I shut the NPRO. The interferometer is available
to anyone. |
|
|
945
|
Sat Sep 13 23:13:01 2008 |
Alberto | Update | General | abs cavity length experiment | The Y arm was locked all time today but, suddenly,
this afternoon it lost lock and since then
I've been unable to restore it. I tried unsuccessfully |
|
|
946
|
Sun Sep 14 18:30:32 2008 |
Alberto | Update | General | ABSL: measured X arm | Today I measured the X arm FSR.
Hi moved the fast PD (Thor Labs PDA255) from
the Y end table to the X end table. I had |
|
|
947
|
Sun Sep 14 19:29:07 2008 |
Alberto | Update | General | ABSL: measured X arm | [quote]Today I measured the X arm FSR.
Hi moved the fast PD (Thor Labs PDA255) from
the Y end table to the X end table. I had |
|
|
956
|
Wed Sep 17 13:58:36 2008 |
Alberto | Update | General | ABSL: results from the X arm | Today I repeated the measurement of the FSR
on the X arm cavity. The noise in the transmitted
power that made the measures fluctuate was |
|
|
960
|
Wed Sep 17 19:13:47 2008 |
Alberto | Update | General | ABSL: status | I installed the setup for measuring TEM01/10
on the X end table.
I'm leaving. I shut the laser, flipped down |
|
|
979
|
Mon Sep 22 20:00:35 2008 |
Alberto | Update | General | ABSL: running measurement | I'm leaving the X arm locked on the TEm01
mode while a measurement is running. Just
please wait for 40 minute if you need the |
|
|
987
|
Wed Sep 24 17:57:04 2008 |
Alberto | Update | General | ABSL: FSS Slow Actuator Control | Rana, Alberto
Today when I started working with the PLL |
|
|
1015
|
Wed Oct 1 12:05:58 2008 |
Alberto | Configuration | Computers | "StochMon" added to the Alarm Handler | John, Alberto,
we added the four channels of the RF Amplitude |
|
|
1016
|
Wed Oct 1 12:09:25 2008 |
Alberto | Configuration | Computers | "StochMon" added to the Alarm Handler | [quote]John, Alberto,
we added the four channels of the RF Amplitude |
|
|
1022
|
Fri Oct 3 12:15:21 2008 |
Alberto | Configuration | IOO | C1iool0 rebooted | This morning, in order to update the threshold
values of the alarm handler for the StochMon,
I rebooted the C1iool0 computer following |
|
|
1028
|
Mon Oct 6 12:45:41 2008 |
Alberto | DAQ | LSC | C1LSC in coma | Alberto, Joe,
The C1LSC medm screen is frozen and the C1LSC |
|
|
1029
|
Mon Oct 6 16:41:33 2008 |
Alberto | DAQ | LSC | C1LSC in coma | [quote]Alberto, Joe,
The C1LSC medm screen is frozen and the C1LSC |
|
|
1030
|
Tue Oct 7 10:49:29 2008 |
Alberto | Update | General | Displaced Photodiode | This morning I found that the photodidode
of the PLL in the PSL table was not aligned
to the beam anymore. The PD support was not |
|
|
1031
|
Tue Oct 7 12:17:57 2008 |
Alberto | Configuration | Computers | Time reset on MEDM | Yoichi, Alberto
I noticed the MEDM screen time was about |
|
|
1039
|
Fri Oct 10 10:20:42 2008 |
Alberto | Omnistructure | Computers | FEs are down | [quote]
The front-end machines are all down. Another
cosmic-ray in the RFM, I suppose. Whoever |
|
|
1040
|
Fri Oct 10 13:57:33 2008 |
Alberto | Omnistructure | Computers | Problems in locking the X arm | This morning for some reason that I didn't
clearly understand I could not lock the Xarm.
The Y arm was not a problem and the Restore |
|
|
1066
|
Wed Oct 22 09:42:41 2008 |
Alberto | DAQ | Computers | c1iool0 rebooted and MC autolocker restarted | This morning I found the MC unlocked. The
MC-Down script didn't work because of network
problems in communicating with scipe7, a.k.a. |
|
|
1070
|
Wed Oct 22 20:50:30 2008 |
Alberto | Omnistructure | Computers | GPS | Today I measured the GPS clock frequency at
the output of CLOCK_MON in a board on the
same crate where the c1iool0 computer is |
|
|
1072
|
Thu Oct 23 15:27:19 2008 |
Alberto | Update | General | Abs length | Here are the measurements I've got yesterday.
The plot shows the transmitted power after
the X arm while sweeping the frequency of |
|
|
1073
|
Thu Oct 23 18:23:47 2008 |
Alberto | Update | General | Abs length | [quote]Here are the measurements I've got
yesterday. The plot shows the transmitted
power after the X arm while sweeping the |
|
|
1074
|
Thu Oct 23 18:27:04 2008 |
Alberto | Update | General | Abs length | [quote]Here are the measurements I've got
yesterday. The plot shows the transmitted
power after the X arm while sweeping the |
|
|
1075
|
Thu Oct 23 18:45:18 2008 |
Alberto | Omnistructure | Computer Scripts / Programs | Python code for GPIB devices developed for the Absl length experiment | I wrote two Python scripts for my measurement
that can be also used/imitated by others:
sweepfrequency. py and HP8590.py. The first |
|
|
1076
|
Thu Oct 23 18:51:19 2008 |
Alberto | Metaphysics | Computers | eLog | I checked it and the latest version of the
elog software, the 2.7.5 (we have the 2.6.5)
has, among new nice features, the very good |
|
|
1084
|
Fri Oct 24 11:42:48 2008 |
Alberto | Update | General | Abs length: locking the X arm cavity in TEM01/10 | I went back to lock the arm cavity in either
TEM01 or TEM10 mode. Attached are the results.
We still have several resonances which we |
|
|
1086
|
Fri Oct 24 17:21:13 2008 |
Alberto | Update | General | Abs length: the right amount of beam clipping | I found the reason why the peak at about 6.3MHz
appeared only on the TEM10 mode: the blade
was clipping the beam too much and it was |
|
|
1087
|
Fri Oct 24 18:05:01 2008 |
Alberto | Update | General | Abs length: transverse mode spacing measured for the X arm | The ETMX suffers of astigmatism. I measured
the following frequencies for the higher
order modes:
|
|
|
1093
|
Mon Oct 27 11:16:23 2008 |
Alberto | Configuration | IOO | StochMon Calibration | I implemented the calibration for the four
channels of the StochMon in the ioo EPICS
database. Now the output of those channels, |
|
|
1097
|
Tue Oct 28 11:10:18 2008 |
Alberto | Update | LSC | Higher Order Mode resonances in the X arms | [quote]Recently we had been having some trouble
locking the full IFO in the [COLOR=green][I][FONT=Verdana]spring[/FONT][/I][/COLOR]
configuration (SRC on [COLOR=blue]+166[/COLOR]).
|
|
|
1109
|
Mon Nov 3 19:18:47 2008 |
Alberto | Configuration | General | new elog | Phil Ehrens kindly poured our elog's content
in a CD that now is here at the 40m.
I've been trying to install the 2.7.5 version |
|
|
1114
|
Tue Nov 4 17:58:42 2008 |
Alberto | DAQ | PSL | MC temperature sensor | I added a channel for the temperature sensor
on the MC1/MC3 chamber: C1:PSL-MC_TEMP_SEN.
To do that I had to reboot the frame builder. |
|
|
1115
|
Wed Nov 5 12:41:36 2008 |
Alberto | Update | LSC | Absolute Length and g-factor measurements conclusions | [SIZE=4][B][COLOR=green]Absolute Length and
g-Factor Measurement for the 40m Arm Cavities,
Summary of Results[/COLOR][/B][/SIZE]
|
|
|
1124
|
Fri Nov 7 18:38:19 2008 |
Alberto | DAQ | PSL | MC temperature sensor hooked up | Alberto, Rana,
we found that the computer handling the signals
from ICS-110B was C1IOVME so we restarted |
|
|
1132
|
Thu Nov 13 11:33:25 2008 |
Alberto | HowTo | Treasure | Making (good) Matlab figures | Just a little summary of some useful ways
to change plot settings in Matlab that I
wanted to share and remember for the future:
|
|
|
1133
|
Thu Nov 13 15:50:44 2008 |
Alberto | Configuration | General | GPS 10MHz clock | The schematic of the 1Y7 rack that Alan pointed
out (see attachment) don't represent anymore
the actual rack.
|
|
|
1139
|
Mon Nov 17 11:01:15 2008 |
Alberto | HowTo | Electronics | Calibrating the Frequency Standard of the Marconi | I locked the [COLOR=purple][I]SRS Rubidium
Frequency Standard FS275[/I][/COLOR] to the
the 1pps from the GPS. The specs from the |
|
|
1145
|
Tue Nov 18 19:44:53 2008 |
Alberto | Update | General | X Arm Cavity "Negative" FSRs Measured | Previous measurements on the X arm cavity
revealed a shift of the frequencies of the
cavity resonances from where one would expect |
|
|
1146
|
Wed Nov 19 10:32:11 2008 |
Alberto | Configuration | Electronics | All the Marconi Set to the Rubidium Frequency Standard | I placed the SRS Rubidium FS275 over the PSL
rack, next to the frequency counter. This
one and the Marconi on the PSL rack have |
|
|
1169
|
Wed Dec 3 11:58:10 2008 |
Alberto | Update | PSL | MC Alignment | Rana, Alberto,
more details on the MC alignment we did yesterday.
|
|
|
1192
|
Thu Dec 18 12:52:00 2008 |
Alberto | Configuration | SUS | Mode Cleaner Cavity Alignment | This morning I found the MC locked to the
10 mode. When I locked it on the 00 mode,
it was unstable and eventually it always |
|