| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
958
|
Wed Sep 17 17:31:24 2008 |
Yoichi | Update | PSL | FSS calibration | I calibrated the reference cavity error signal
with the following procedure.
|
|
|
957
|
Wed Sep 17 15:22:31 2008 |
Yoichi | Configuration | PSL | RC sweep going on | [quote]I'm doing a cavity sweep of the RC.
Please leave the IFO untouched until the
meeting is over.[/quote]
|
|
|
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 |
|
|
954
|
Wed Sep 17 13:43:54 2008 |
Yoichi | Configuration | PSL | RC sweep going on | I'm doing a cavity sweep of the RC. Please
leave the IFO untouched until the meeting
is over. |
|
|
953
|
Wed Sep 17 12:58:12 2008 |
rob | Update | Locking | bad |
Locking was pretty unsuccessful last night.
All the subparts were locked (ARMs, PRM, |
|
|
952
|
Wed Sep 17 12:55:28 2008 |
rob | Configuration | IOO | MC length | I measured the mode cleaner length last night:
[code]
|
|
|
951
|
Tue Sep 16 16:47:01 2008 |
pete | Configuration | PSL | Prototype FSS reference installed | After verifying output, I installed the new
prototype 21.5 MHz FSS reference (Wenzel
crystal oscillator and ZHL-2 amp). Yoichi |
|
|
950
|
Tue Sep 16 13:04:22 2008 |
Yoichi | Configuration | PEM | C1:PSL-FSS_RMTEMP alarm level changed | At the request of Steve, I modified the HIGH
value of C1:PSL-FSS_RMTEMP from 21.27 to
23.0.
|
|
|
949
|
Tue Sep 16 10:57:45 2008 |
Yoichi | Configuration | PEM | Particle counter gain | Summary:
Since we reduced the integration time of
the particle counter by a factor of 10, we |
|
|
948
|
Mon Sep 15 14:00:52 2008 |
josephb | Configuration | Computers | 1Y9 Hub and C1asc | The 1Y9 switch is now using a labeled Cat6
cable in cable trays to connect to the main
switch in the offices. In addition, the |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
943
|
Thu Sep 11 23:28:35 2008 |
alberto | Update | General | abs cavity length experiment | The MC lost lock for some reason not related
to either the FSS or the PMC I'm done with
my measurement for tonight. I've shut the |
|
|
942
|
Thu Sep 11 14:27:53 2008 |
steve | Bureaucracy | SAFETY | safety training | Peter Kalmus received 40m specific safety
training last week. |
|
|
941
|
Thu Sep 11 11:29:14 2008 |
josephb | Configuration | Computers | Final netgear switch in place in 1Y2 | I've placed the final (of 4) Netgear prosafe
24 port switch at the very top of 1Y2. At
that location, there are no holes left to |
|
|
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.
|
|
|
939
|
Wed Sep 10 13:28:25 2008 |
Yoichi | Summary | Electronics | IOO rack lost -24V (recovered) | Alberto, Yoichi
This morning, the MC suddenly started to |
|
|
938
|
Wed Sep 10 08:57:03 2008 |
steve | Update | General | etmy illuminator turned off | The ETMY illuminator was left on yesterday.
I just turned it off. |
|
|
937
|
Mon Sep 8 15:38:57 2008 |
Yoichi | Configuration | PSL | POY RF amp is back to its original task | I temporarily fixed the busted ZHL-32A RF
amplifier's power connector by simply soldering
a cable to the internal circuit and pulling |
|
|
936
|
Mon Sep 8 13:47:35 2008 |
steve | Update | PEM | thermostate setting changed | [quote][quote]Some one changed the thermostat
(old control room ) setting behind 1Y6 from
73 to 79F
|
|
|
935
|
Mon Sep 8 10:57:49 2008 |
steve | Update | IOO | the psl and mc are back to normal | The alarm handler is silent this morning.
This is almost unbelievably pleasant after
two mount of harassment.
|
|
|
934
|
Fri Sep 5 15:09:50 2008 |
rana | Update | PEM | thermostate setting changed | [quote]Some one changed the thermostat (old
control room ) setting behind 1Y6 from 73
to 79F
|
|
|
933
|
Fri Sep 5 10:36:34 2008 |
steve | Update | PEM | thermostate setting changed | Some one changed the thermostat (old control
room ) setting behind 1Y6 from 73 to 79F
It should be in the elog.
|
|
|
932
|
Fri Sep 5 09:56:14 2008 |
josephb, Eric | Configuration | Computers | Funny channels, reboots, and ethernet connections | 1) Apparently the I00-ICS type channels had
gotten into a funny state last night, where
they were showing just noise, exactly when |
|
|
931
|
Fri Sep 5 08:34:03 2008 |
steve | Update | PSL | MZ locked | The MC is happy.
The MZ can be locked if you move the slider
by hand. |
|
|
930
|
Thu Sep 4 18:02:34 2008 |
rana, josephb | Configuration | PEM | Accelerometer gains increased by 10 | [COLOR=chocolate][SIZE=3]We increased the
Accelerometer gains by 10 by modifying the
C1ADCU_PEM.ini file.[/SIZE][/COLOR]
|
|
|
929
|
Thu Sep 4 17:44:27 2008 |
Yoichi | Update | PSL | FSS error signal spectrum | Attached is a spectrum of the FSS error signal.
There are a lot of sharp peaks above 100kHz
(the UGF of the servo is about 200kHz).
|
|
|
928
|
Thu Sep 4 17:17:03 2008 |
Yoichi | Update | IOO | MC open loop TF | I measured open loop transfer functions of
the MC servo.
The UGF was about 30kHz. Since there was |
|
|
927
|
Thu Sep 4 17:12:57 2008 |
Yoichi | Update | PSL | FSS open loop TF | I changed the gain settings of the FSS servo.
Now the Common Gain is 5dB (the last night
it was 2dB) and the Fast Gain is 12dB (formerly |
|
|
926
|
Thu Sep 4 17:03:25 2008 |
Yoichi | Update | PSL | RF oscillator noise comparison | I measured current spectra of the RF signal
going to the FSS EOM.
The attachment compares the spectra between |
|
|
925
|
Thu Sep 4 16:24:56 2008 |
rana | Configuration | Computers | Attempt to increase gain for C1:PSL-ISS_INMONPD_F via 110B | [quote]We were attempting to increase the
gain on the channel C1:PSL-ISS_INMONPD_F
in preparation to do a scan of the PMC at |
|
|
924
|
Thu Sep 4 14:43:58 2008 |
Jenne | Update | PSL | PMC Open Loop Gain | I have measured the PMC's open loop gain.
[SIZE=3][COLOR=green]UGF is 629.7Hz, with
a phase margin of 53 degrees.
|
|
|
923
|
Thu Sep 4 13:48:50 2008 |
Yoichi | Update | PSL | FSS modulation depth | I scanned the reference cavity with the NPRO
temperature (see the attached plot).
The power ratio between the carrier and the |
|
|
922
|
Thu Sep 4 11:33:25 2008 |
josephb, Eric, Jenne | Configuration | Computers | Attempt to increase gain for C1:PSL-ISS_INMONPD_F via 110B | We were attempting to increase the gain on
the channel C1:PSL-ISS_INMONPD_F in preparation
to do a scan of the PMC at very low input |
|
|
921
|
Thu Sep 4 10:13:48 2008 |
Jenne | Update | IOO | We unlocked the MC temporarily | [Joe, Eric, Jenne]
While trying to diagnose some DAQ/PD problems |
|
|
920
|
Thu Sep 4 07:46:10 2008 |
Yoichi | Update | IOO | MC is now happy | The MC has been locked for more than 12 hours
continuously now !
Changes I made yesterday were:
|
|
|
919
|
Thu Sep 4 07:29:52 2008 |
Yoichi | Update | PSL | c1iovme power cycled | [quote]Entry 663 has a plot of this using
the PSL/FSS/SLOWscan script. It shows that
the SB's were ~8x smaller than the carrier.
|
|
|
918
|
Thu Sep 4 00:38:14 2008 |
rana | Update | PSL | c1iovme power cycled | Entry 663 has a plot of this using the PSL/FSS/SLOWscan
script. It shows that the SB's were ~8x smaller
than the carrier.
|
|
|
917
|
Wed Sep 3 19:09:56 2008 |
Yoichi | DAQ | Computers | c1iovme power cycled | When I tried to measure the sideband power
of the FSS using the scan of the reference
cavity, I noticed that the RC trans. PD signal |
|
|
916
|
Wed Sep 3 18:45:01 2008 |
Alberto | Configuration | | PD3 gain | Alberto, Yoichi,
We found that the PD3 servo was unstable |
|
|
915
|
Wed Sep 3 18:43:19 2008 |
Yoichi | Configuration | Electronics | Two more active probes | I found two active probes, an HP41800A and
a Tektronix P6201.
Thanks John for telling me you saw them before.
|
|
|
914
|
Wed Sep 3 12:26:49 2008 |
Eric | Summary | Cameras | Weekly Summary | Finished up simulating the end mirror error
in order to test the whether the fitting
code still provides reasonable answers despite |
|
|
913
|
Tue Sep 2 22:43:16 2008 |
Yoichi | Configuration | PSL | Updated FSS open loop TF | Since the LO level of the FSS servo was too
low, I replaced the RF oscillator board with
a combination of
|
|
|
912
|
Tue Sep 2 14:28:41 2008 |
Yoichi | Update | PSL | FSS EOM driving signal spectra | Rich advised me to change the +10V input of
the FSS crystal frequency reference board
from whatever voltage supply we use now to |
|
|
911
|
Tue Sep 2 10:09:03 2008 |
steve | Update | PSL | head temp is cooling down | The chiller was over flowing this morning.
800 cc of water was removed.
PSL-126MOPA_HTEMP peaked at 20.7 C (normal |
|
|
910
|
Tue Sep 2 09:58:42 2008 |
Yoichi | Configuration | PSL | FSS on an auxiliary loop | [quote]Summary: The FSS is now temporarily
disabled. Naturally, the MC won't lock. I
will fix it tomorrow morning.
|
|
|
909
|
Tue Sep 2 07:58:34 2008 |
rana | Summary | PSL | FSS & PMC LO trends for 2 years | The attached plot is a 2 year minute trend
of the EPICS readback of the PMC & FSS LO
Monitors (FSS_LODET & PMC_LODET).
|
|
|
908
|
Mon Sep 1 19:23:17 2008 |
Yoichi | Configuration | PSL | FSS on an auxiliary loop | Summary: The FSS is now temporarily disabled.
Naturally, the MC won't lock. I will fix
it tomorrow morning.
|
|