| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
855
|
Tue Aug 19 17:15:34 2008 |
Sharon | Update | | MEDM | I plugged in the gains I got for the accelerometers
in the accelerometers' filters in the PEM
screen of the adaptive filter |
|
|
854
|
Tue Aug 19 17:00:19 2008 |
Sharon | Update | | Wiener TF calibration - update | [I]This is an update for post 814[/I]
I added the calibration gains I got for the |
|
|
853
|
Tue Aug 19 14:25:38 2008 |
Sharon | Update | PEM | Accelerometer's calibration - update | [COLOR=blue][B]Goal[/B][/COLOR] - Make sure
the accelerometers are calibrated among themselves
(have the same power spectrum when they are |
|
|
852
|
Tue Aug 19 13:34:58 2008 |
josephb | Configuration | Computers | Switched c1pem1, c0daqawg, c0daqctrl over to new switches | Moved the Ethernet connections for c1pem1,
c0daqawg, and c0daqctrl over to the Netgear
Prosafe switch in 1Y6, using new cat6 cables. |
|
|
851
|
Tue Aug 19 13:12:55 2008 |
Jenne | Update | SUS | Diagonalized PRM Input Matrix | [SIZE=2][COLOR=blue]NOTE: Use the values
in elog #860 instead (20Aug2008)[/COLOR][/SIZE]
|
|
|
850
|
Tue Aug 19 10:36:34 2008 |
Sharon | Update | | Calibrating accelerometers | I took apart the accelerometers near MC1 and
MC2.
The 2 sets of 3 accelerometers are now covered |
|
|
849
|
Mon Aug 18 22:47:12 2008 |
Yoichi | Update | IOO | MC unlock study | As rob noted, the MC keeps unlocking in a
few minutes period.
I plotted time series of several signals |
|
|
848
|
Mon Aug 18 17:37:14 2008 |
rob | Update | Locking | recovery progress |
I removed the beam block after the PSL periscope
and opened the PSL shutter.
|
|
|
847
|
Mon Aug 18 15:32:18 2008 |
josephb | Configuration | Cameras | How to multicast with gstreamer and Gige Cameras | In order to get multicasting to work, one
simply needs to understand the address scheme.
|
|
|
846
|
Mon Aug 18 11:50:29 2008 |
Yoichi | Update | SUS | In vacuum free swinging results | The first attachment is the results of the
free swinging spectra measurement performed
in vacuum this morning.
|
|
|
845
|
Mon Aug 18 09:19:55 2008 |
steve | Summary | VAC | 11 days at atm | It took 11 days to fix earth quake triggered
sus problems of ITMX, SRM and PRM
Only ITMX north and BSC north vac doors were |
|
|
844
|
Mon Aug 18 08:07:10 2008 |
Yoichi | Configuration | SUS | Suspension free swinging | I've started a free swinging measurement of
OSEM spectra now. Please leave the watchdogs
untouched. |
|
|
843
|
Fri Aug 15 19:32:49 2008 |
steve | Configuration | VAC | pumpdown complete | I have just reached vacuum normal. The maglev
peaked at 49.8C body temp with aux fan on
at 3.2 Torr
|
|
|
842
|
Fri Aug 15 17:38:41 2008 |
Yoichi | Update | SUS | OSEM free swinging spectra before the pump down | I ran an overnight measurement of the free
swinging OSEM spectra.
The attm1 shows the results. Everything look |
|
|
841
|
Fri Aug 15 16:45:43 2008 |
Sharon | Update | | Converting from FIR to IIR | I have been looking into different techniques
to convert from FIR to IIR. This is so we
can see how effective the adaptive FIR filter |
|
|
840
|
Fri Aug 15 14:12:31 2008 |
steve | Bureaucracy | SAFETY | safety glasses required | The MOPA shutter is opened,
the PSL enclosure is switched to bypass mode,
manual block removed from PMC,
|
|
|
839
|
Fri Aug 15 11:52:32 2008 |
josephb | Configuration | Cameras | Multi-computer display and recording of digital camera output | Through the magic of gstreamer, I've been
able to live play on one machine, compress
the image, send it to another machine via |
|
|
838
|
Thu Aug 14 21:52:51 2008 |
Koji | Summary | General | Abs. Len. Meas. ~ summary of my Summer | I have made the summary of the absolute length
measurement.
It is attached here. The file is a bit big |
|
|
837
|
Thu Aug 14 19:35:54 2008 |
Jenne | Summary | IOO | PRM in the chamber, ready to pump! | Rob, Yoichi, Jenne, Steve
[COLOR=blue][SIZE=2]Summary: Everything |
|
|
836
|
Thu Aug 14 19:08:14 2008 |
Yoichi | Configuration | SUS | Free swing measurement going on | I started free swinging spectra measurement
of all the suspensions now Aug 14 19:05 (PDT).
The watch dogs are all shutdown. Please do |
|
|
835
|
Thu Aug 14 15:51:35 2008 |
josephb | Summary | Cameras | FOUND! The Missing Standoff! | We used a zoom lens on the GC750 to take this
picture of the standoff while inside a plastic
rubber-glove bag. The standoff with bag |
|
|
834
|
Thu Aug 14 11:39:06 2008 |
steve | Update | PEM | particle counter is out of order | The 40m ifo paricle counter sensor failed
last night. |
|
|
833
|
Thu Aug 14 10:26:45 2008 |
steve | HowTo | SUS | sus cable pin cheater for out of vac damping | The 40m D25 vacuum feed troughs give you a
mirror image pin count.
|
|
|
832
|
Wed Aug 13 20:13:35 2008 |
Yoichi | Update | SUS | PRM stand-off is glued | Steve, Janne, Rob, Bob, Koji, Yoichi
We finally managed to balance the PRM and |
|
|
831
|
Wed Aug 13 17:00:59 2008 |
steve | Configuration | SUS | BS sat amp removed | The PRM sat amp is broken. Ben is working
on it.
The BS sat amp was removed from the BS sus |
|
|
830
|
Tue Aug 12 21:38:19 2008 |
John | Update | LSC | Accidental higher order mode resonances in the arms | 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]).
|
|
|
829
|
Tue Aug 12 19:48:24 2008 |
Jenne | Update | IOO | PRM standoff is in....mostly | Yoichi, Jenne
The missing PRM standoff is now partially |
|
|
828
|
Tue Aug 12 12:21:13 2008 |
josephb | Configuration | Cameras | Variation in fit over 140 images for GC650 and GC750 | Used matlab to calculate Gaussian fits on
145 GC650 images and 142 GC750 images. These
were individual images (no averaging) looking |
|
|
827
|
Tue Aug 12 12:05:36 2008 |
Yoichi | Update | Computers | HP color printer is back | I restarted the HP printer server (a little
box connected to the HP color laser) so that
we can use the HP LaserJet 2550.
|
|
|
826
|
Mon Aug 11 19:09:28 2008 |
Jenne | DAQ | PEM | Seismometer DAQ is being funny | While looking at the Ranger seismometer's
output to figure out what our max typical
ground motion is, Rana and I saw that the |
|
|
825
|
Mon Aug 11 15:07:49 2008 |
josephb | Configuration | Computers | Procyon aka fb40m switched to new switch | I've connected Procyon to the Prosafe 24 port
switch with a new, labeled Cat6 cable. Quick
tests with dataviewer shows that its working. |
|
|
824
|
Mon Aug 11 13:59:23 2008 |
josephb | Configuration | Computers | | While poking around the crate, I noticed an
error light on one of the c1susvme2 related
boards was lit, while the corresponding light |
|
|
823
|
Mon Aug 11 12:42:04 2008 |
josephb | Configuration | Computers | Continuing saga of c1susvme1 | Coming back after lunch around 12:30pm, c1susvme1's
status was again red. After switching off
watchdogs, a reboot (ssh, su, reboot) and |
|
|
822
|
Mon Aug 11 11:36:11 2008 |
josephb, Steve | Configuration | Computers | c1susvme1 minor problems | Around 11 am c1susvme1 start having issues.
Namely C1:SUS-PRM_FE_SYNC was railing at
some large value like 16384 (2^14). I presume |
|
|
821
|
Mon Aug 11 09:39:29 2008 |
rana | Update | PEM | 2 years of temperature trend | Steve and I went around and inspected and
then adjusted the thermostats and [FONT=Comic
Sans MS]humidostats[/FONT].
|
|
|
820
|
Mon Aug 11 00:58:31 2008 |
rana | Update | PEM | 2 years of temperature trend | The PSL RMTEMP alarmed again because it says
the room temperature is 19.5 C. Steve said
in
|
|
|
819
|
Sun Aug 10 16:57:02 2008 |
rana | Summary | Photos | Photos from Vent 8/4 - 8/8 | http://www.ligo.caltech.edu/~rana/40m/VentAug08/
I've added the D40 pictures from last week |
|
|
818
|
Fri Aug 8 17:54:52 2008 |
Jenne | Update | SUS | Standoffs and Guide Rods | After closer inspection of other small optics,
it is clear that the guide rods should be
[SIZE=2]above[/SIZE] the standoffs on our |
|
|
817
|
Fri Aug 8 15:10:35 2008 |
Yoichi | Update | SUS | No groove in the stand-off ... wait, it is not even a stand-off ! | I tried to find the missing stand-off and
the guide rod in the BS chamber, but I couldn't. |
|
|
816
|
Fri Aug 8 13:29:54 2008 |
Yoichi | Update | SUS | No groove in the stand-off ... wait, it is not even a stand-off ! | Yoichi, Steve, Seiji
We took magnified pictures of the stand-offs |
|
|
815
|
Fri Aug 8 12:21:57 2008 |
josephb | Configuration | Computers | Switched X end ethernet connections over to new switch | In 1X4, I've switched the ethernet connections
from c1iscex and c1auxex over to the new
Prosafe 24 port switches. They also use |
|
|
814
|
Fri Aug 8 11:04:34 2008 |
Sharon | Update | | MCL Wiener filter | I took some old data from Rana and converted
the units of the Weiner filter to m/m so
to make the effect of the seismometer and |
|
|
813
|
Fri Aug 8 10:58:05 2008 |
josephb | Configuration | Cameras | Cameras and gstreamer | In regards to camera failure:
1) I forgot to reconnect that particular
camera to the network (my fault) so thats |
|
|
812
|
Fri Aug 8 09:54:10 2008 |
rana | Update | Cameras | New code + gstreamer allows for easy saving and compression of images | [quote]Modified the CamSnap code to output
the image data stream to standard out. This
can then be piped into a gstreamer plugin |
|
|
811
|
Thu Aug 7 17:32:23 2008 |
Jenne | Update | SUS | Afternoon PRM activities | Rana, Jenne, Yoichi, Dmass
After Yoichi confirmed this morning that |
|
|
810
|
Thu Aug 7 12:20:52 2008 |
Yoichi | Update | SUS | PRM stand-offs and wire | We removed the side OSEM of the PRM so that
we can see the stand-off on the farther side.
|
|
|
809
|
Thu Aug 7 11:54:26 2008 |
josephb | Configuration | Cameras | New code + gstreamer allows for easy saving and compression of images | Modified the CamSnap code to output the image
data stream to standard out. This can then
be piped into a gstreamer plugin and then |
|
|
808
|
Thu Aug 7 10:27:59 2008 |
rana | Update | SUS | Free swinging OSEM spectra | Sometimes we see extra peaks in the OSEM spectra
coming from a beat between the regular eigenmodes.
This probably comes from the OSEM shadow |
|
|
807
|
Thu Aug 7 10:07:13 2008 |
Yoichi | Update | SUS | Free swinging OSEM spectra | Looks like there are more extra peaks in the
SRM than other optics.
Maybe because it is closer to the door ? |
|
|
806
|
Wed Aug 6 22:19:07 2008 |
Yoichi | Update | SUS | BS alignment | Koji, Yoichi
We realized that we did not pay attention |
|