| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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.
|
|
|
907
|
Mon Sep 1 04:34:00 2008 |
rana | Update | PSL | FSS loop transfer functions | I started from 6th item in Yoichi's todo list.
1) Increased the setpoint of the thermostat |
|
|
906
|
Sat Aug 30 13:28:01 2008 |
rana | Configuration | PSL | PMC: List of changes | This is a list of changes made to the PMC
board while we had it out for modifying the
notch:
|
|
|
905
|
Fri Aug 29 22:57:48 2008 |
Yoichi | Update | PSL | FSS loop transfer functions | I've been measuring a bunch of transfer functions
of the FSS related stuffs.
There are a lot to be analyzed yet, but here |
|
|
904
|
Fri Aug 29 18:24:48 2008 |
rana | HowTo | PSL | PMC: PZT Calibration | I calibrated the PMC PZT at DC by using 'trianglewave'
to drive the DC offset slider
and reading back PMC_PZT and PMC_TRANSPD_F |
|
|
903
|
Fri Aug 29 17:39:25 2008 |
rana | Configuration | PSL | PMC: ADC Channels | The attached PNG shows the PMC error and controls
signals with no calibration.
|
|
|
902
|
Fri Aug 29 16:35:18 2008 |
Yoichi | Configuration | PSL | beam block distorted | [quote]There was a beam block after the Mach
Zender. Who or what put this there?
|
|
|
901
|
Fri Aug 29 15:01:45 2008 |
steve | Update | PSL | MOPA_HTEMP in increasing | The laser chiller temp is 21.9C ( it should
be 20.0C )
Control room temp 73F ok, no obvious block
|
|
|
900
|
Fri Aug 29 12:43:44 2008 |
josephb | Summary | Computers | c1susvme1 down | Around noon today, c1susvme was having problems.
The C0DAQ_RFMNETWORK light was red. The
status light was off, the sig det light was |
|
|
899
|
Fri Aug 29 12:41:26 2008 |
josephb, Eric | Configuration | Computers | More front ends moved to new network | Used Cat6 cables to finish moving all the
front ends in 1Y4 and 1Y5 over to the new
GigE network switches, specifically to the |
|
|
898
|
Fri Aug 29 11:05:11 2008 |
josephb | Summary | Computers | c1asc was down this morning | I had to manually reboot c1asc this morning,
as for some unknown reason its status was
red, and the fiber lights on the board were |
|
|
897
|
Fri Aug 29 11:01:49 2008 |
josephb | Configuration | Computers | Attempt to change a channel gain in ICS-110B | As noted earlier by Rana, I was playing around
with the /cvs/cds/caltech/chans/daq/C1IOOF.ini
file with help from Rob. I had made a backup |
|
|
896
|
Fri Aug 29 10:20:32 2008 |
Yoichi | Configuration | PSL | beam block distorted | [quote]There was a beam block after the Mach
Zender. Who or what put this there?
|
|
|
895
|
Fri Aug 29 02:40:43 2008 |
rana,jenne | Update | PSL | PMC Servo Board | [quote]Board is back in. PMC is locked.
[/quote]
|
|
|
894
|
Thu Aug 28 19:02:25 2008 |
rana, josephb, rob | Summary | Computers | big boot | This afternoon Joe did something with an .ini
file (look for his detailed elog entry) and
the computers went bad.
|
|
|
893
|
Thu Aug 28 18:56:14 2008 |
rana | Configuration | PSL | beam block distorted | There was a beam block after the Mach Zender.
Who or what put this there?
|
|
|
892
|
Wed Aug 27 13:55:43 2008 |
rana,jenne | Update | PSL | PMC Servo Board | Board is back in. PMC is locked.
Nominal gain is now 15 dB with brick. We |
|
|
891
|
Wed Aug 27 12:09:10 2008 |
Eric | Summary | Cameras | Weekly Summary | I added a configuration file parser to the
Snap code. This allows all command line
parameters (like exposure time, etc.) to |
|
|
890
|
Wed Aug 27 10:55:35 2008 |
Yoichi | HowTo | Computers | Annoying behavior of the touch pads of the lab. laptops is fixed | I was sick of the stupid touch pad behavior
of the lab. laptops, i.e. firefox goes back
and forth in the history when the cursor |
|
|
889
|
Tue Aug 26 19:07:37 2008 |
Yoichi | HowTo | Computers | Reading data from Agilent 4395A analyzer through GPIB from *Linux* machine | I succeeded in reading data from Agilent 4395A
analyzer, who's floppy is crappy, through
GPIB from a Linux machine using
|
|
|
888
|
Tue Aug 26 18:19:16 2008 |
rana | Omnistructure | Electronics | Resistor Noise at the 40m | As Stefan points out in his recent ISS ilog
entries at LLO, Daniel [COLOR=darkgreen]Sigg
recently wrote a
|
|
|
887
|
Tue Aug 26 15:06:16 2008 |
steve | Configuration | VAC | rga scan | Pumpdown 66 PRM-maglev vac normal -day 11
short form: pd66PRM-m-d11 |
|
|
886
|
Tue Aug 26 12:00:45 2008 |
Jenne | Summary | PEM | Transfer function of Ranger seismometer | This finishes up the calibration that Rana
started in elog # 881.
|
|
|
885
|
Tue Aug 26 09:58:59 2008 |
steve | Omnistructure | COC | ETMX is #03 | This is the picture of ETMX from the upper
south west viewport |
|
|
884
|
Tue Aug 26 09:04:59 2008 |
rana | Configuration | PSL | PMC Servo Board: Out for Repairs | I've started modifying our PMC board to bring
it up to the 21st century - [B][COLOR=blue]leave
the screen alone[/COLOR][/B] or else you |
|
|
883
|
Mon Aug 25 21:15:23 2008 |
rana | Configuration | LSC | aux NPRO off | [FONT=Comic Sans MS][COLOR=purple]Looks like
no one has used the Lightwave NPRO on the
AS table after Koji left, so I turned it |
|
|
882
|
Mon Aug 25 17:45:34 2008 |
rana, josephb, rob | HowTo | PEM | Accelerometer range | Joe shows us by jumping up ~15" in the control
rom that the accelerometers are set with
not enough gain.
|
|
|
881
|
Mon Aug 25 15:50:18 2008 |
rana | Summary | PEM | Ranger SS-1 | The manual for the Ranger SS-1 seismometer
can be found on line here:
[URL=ftp://ftp.kmi.com/pub/software_manuals/300190/300190nc.pdf]ftp://ftp.kmi.com/pub/software_manuals/300190/300190nc.pdf[/URL]
|
|
|
880
|
Mon Aug 25 14:42:09 2008 |
Eric | Configuration | Cameras | ETMX Digital Camera | I changed the lens on the camera looking at
the ETMX to a 16mm, 1:1.4 zoom lens. This
is in preparation to measure a couple parameters |
|
|
879
|
Mon Aug 25 14:18:36 2008 |
Jenne | Update | PSL | PMC servo board is fixed | The PMC servo board is back in place, all
fixed up with a shiny new resistor. The
PMC locks, and the MC locks (I'm not saying |
|