The LIGO Executive Committee meeting for February 14, 2005 is cancelled because of the Staffing Committee meeting.
The President’s Budget request for FY06 was announced this week. This includes a document on the NSF website
which describes the program for Major Research Equipment and Facilities
Construction http://www.nsf.gov/about/budget/fy2006/pdf/6-MREFC/26-FY2006.pdf
not only for FY06, but for several years into the future.
As you will see, the document has a section
near the end on Advanced LIGO. AdvLIGO is treated
very seriously in the document, and so has made a lot of progress out the door
of the NSF and into the Administration's planning for science in the coming
years. There is some disappointment; AdvLIGO is requested to be a 2008 start (first money nominally
in Oct 07), a year later than we had been planning.
I emphasize that the release of the President's budget request is only the
first step in a long process. There is still a small chance that some
earlier funding could be found. The fact
that AdLIGO is included in the plans and budgets is a
very big step and means we are now an established part of the
administration’s science program in spite of very tight science
budgets. So, it is a very big step for us to be part of their budget
planning, even if the start date is later than we would have optimistically
preferred.
no report
STATUS
OF LSC MOUs (Petrac)
LSC MOUs
and Research Plans and Progress Reports
For a web page summary showing the
status of LSC MOUs and associated Attachment updates
through August 15th and Progress Reports through February 12th see:
http://www.ligo.caltech.edu/~irena/Revstatus/Reviewstat.doc
Non-LSC MOUs
SITE
TELECONFERENCE (Lindquist)
A site teleconference was held on
Thursday, February 10, 2005. The following items were among those discussed:
PROPERTY
MANAGEMENT (Chargois)
>From: Ed Chargois
<chargois_e@ligo.caltech.edu>
>From: Linda Turner -
turner@ligo.caltech.edu>
>From: Cleveland Mak <mak_c@ligo.caltech.edu>
COST
SCHEDULE CONTROL SYSTEMS (Cunningham, Brambila,
Kaufman, Salone)
>From: Esther Cunningham
<esther@ligo.caltech.edu>
>From: "Brambila, Ruth" <Ruth.Brambila@caltech.edu>
>From: Gina Salone <gsalone@ligo.caltech.edu>
>From: Florence Kaufman
<fkaufman@ligo.caltech.edu>
SUBCONTRACTS
MANAGEMENT (Petrac, Jasnow)
>From:
irena@ligo.caltech.edu (Irena Petrac)
>From: Ed Jasnow <jasnow@ligo.caltech.edu>
SUPPORT
(Baldon, Lloyd)
>Irene Baldon
>Dorothy Lloyd
PROPOSALS
and REPORTS (Lindquist)
Nothing to report.
DCC Steering
Committee (Lindquist)
The DCC Steering Committee met
February 8, 2005. Discussion focused on the requirements matrix currently
under development. The next meeting of the DCC steering committee is
scheduled for Wednesday, February 16, 2005.
CHANGE
CONTROL/CONTINGENCY MANAGEMENT (Lindquist)
>From: Cindy Akutagawa <cindy@ligo.caltech.edu>
Quality/Safety
(Tyler)
>From: Bill Tyler
<tyler@ligo.caltech.edu>
During the recent LIGO safety audit of the Wilson House complex, there was an
action item generated regarding the operation of the smoke/fire alarm system in
the buildings. Specific questions were: does a smoke/fire alarm alert
Caltech campus security, how often are the detectors operationally checked, and
by whom? The Caltech fire alarm group declared that since it was an
"off-campus" location, Caltech Security should be contacted for
answers regarding the smoke/fire alarm system. In summary, the Wilson
House complex is "protected" by an integrated "burglary" and
fire alarm system and is checked periodically when requested by Security.
Either type of alarm will sound inside the
Summary of Commissioning Activities at
LIGO
E12 closed out with good performance from both interferometers.
Commissioning efforts continued through the early part of the run, followed by
steady science mode operation. The H1 duty cycle during this latter stage
was 73%, with a binary inspiral range of
7-9Mpc. H2 ran more stably at 3.5Mpc, 84% of the time.
Commissioning items during and after the run are bulleted below. Please
see the elog for more details.
Outreach (D. Ingram)
An enthusiastic audience of ~85 attended our February WYP event, a showing of
"Runaway Universe" hosted by Fred. Vern Sandberg
will host our March film, "Death Star".
L1 Commissioning (
---------------------------------------------------------------------
The interferometer
commissioning resumed on Tuesday after the successful E12 engineering run. The
commissioning activities included:
-
installation and testing of the fast DAQ electronics
-
investigation of the dark noise on anti-symmetric port
photodiodes
-
reviving the weather station
Safety and Security (Riesen)
---------------------------------------------------------------------
Nothing to
report.
L1 and AdL
Mechanical Engineering (Spjeld)
---------------------------------------------------------------------
AdL Quad SUS Installation Fixtures
- Spoke with Piset at Ameriflex on the
possibility of using bellows in lift table actuators; edge-welded bellows might
be applicable.
- Had to run new FEA analysis
on support beam; will send to Ken Mason for review upon completion.
- Awaiting review from Dennis
Coyne on overall design and feasibility.
AdL SEI Engineering Effort
- AdL
ISI web-page completed; link from main LIGO page suggested.
- Technical notes document
from ASI meeting in progress; mid next week.
- List of existing/expected AdL ISI drawings from ASI in progress; end of next week .
- Will be posting updated AdL SEI models on PDMWorks vault
at the end of February.
Misc. Engineering
- Still awaiting quote on
drawings for the re-designed GS13 sensor platforms to machine shop.
HEPI Valve Calibration
- analyzed
bad valve from LASTI
- calibration
of new servo valves in progress; four valves remaining
Upcoming Tasks
- finish HAM door lifting
fixture design
- look into shutter problem
(decision made to wait till after S3)
LLO General Computing and
LIGO CyberSecurity (Roddy)
---------------------------------------------------------------------
Two weeks worth since I was
unable to submit a weekly last week.
Replaced the Cisco 3550 with
the Linux firewall and performance seems to be much better. With the consolidated
ruleset, I am getting ~25 times the performance I was
getting on the Cisco 3550.
Working
with LSU on some traffic shaping issues for LDAS. Now that we are positive that the firewall is
not the bottleneck for bandwidth, we are working LSU so that we can hopefully
get enough bandwidth for LDAS to transfer data to CIT during the runs.
LSU so far has not been able to identify the bottleneck.
Working on
a network issue for LSU. They
cannot seem to get to the weather stations and collect their data. There
are no log entries on the firewall and from what I can tell the traffic should
be allowed. This is unresolved at this point. I am continuing to look
into it.
Setting up
a workstation for Natalia. Installing Fedora Core 3 so
that she has a supported platform for the analysis software.
Attended a
meeting at LHO last week.
More details will come later. Also working on a schedule of
items that were discussed at the meeting.
The ilog
crashed the web server over the weekend. I spent Monday night building a
new web server and installing the ilog on it.
There is now a machine named ilog.ligo-la.caltech.edu which serves the ilog. This is a dedicated machine now strictly for
the ilog. Still a lot of work
that needs to be done to the general web server. It desperately
needs to be upgraded. Hopefully I can get this done in the next couple of
weeks.
High Power Laser Facility,
Optics Modeling and L1 Commissioning (Franzen)
---------------------------------------------------------------------
1) The status of the IPG
laser which was returned for repair is still unknown.
2) Writing on the AdvLIGO mode cleaner Melody technical note.
3) Took an LLO SciMon shift.
LDAS/Condor Sysadmin and Burst Analysis (Yakushin)
---------------------------------------------------------------------
Condor/LDAS admin:
1) Shipped E12 tapes to CIT
2) Helped Sukanta
to get data for the analysis of stochastic injections.
3) Configured E12 databases
at LLO and LHO for online backups. Stopped taking online
backups of S2 and S3 databases since they are not updated anymore.
Data analysis:
1) Ran waveburst
online during E12. Found some bugs in my online scripts that will be fixed
before S4. Waveburst triggers were used for
evaluating of the interferometers performance during E12.
2) Started MDC generation for
the whole S3.
3) Learnt how to install and
configure Carrot. I would like to use Carrot as a way to publish online waveburst triggers during S4. The advantage of Carrot is
that one can view and plot the content of a ROOT file using just a web browser.
Since waveburst produces triggers in the ROOT file
format, it would be an extremely convenient way
to make the triggers immediately available and easily browsable.
see also the CDS weekly meeting minutes in the commissioning archives
no report
Jay
Heefner reporting
=============================
-
The first units have been tested.
-
Sander is making sure he has enough equipment to outfit LLO. Right now he only
has enough parts for 10 receivers which may not be enough.
-
Paul is building a portable tester for the system.
===========================
-
Waiting for a prioritized list of frequencies from the observatories.
==============================
-
Making mods to the board for LLO. This will make it
the same as the LHO boards.
-
2 more boards in the shop will also be upgraded.
================================
-
LLO boxes received, upgraded and sent back.
===================================
-
-
Upgraded TCS chiller electronics.
no report
no report
no report
Ken Mailand
LHO,
Cheryl has inspected the 2K chiller assembly and reports that there is no rust
or corrosion at all to date using the recommended dex
fluid mixture.
Two TCS Chillers are assembled, tested, and ready to ship to LLO.
Lee Cardenas, Liyuan Zhang
OTF
Lab. (W. Bridge) shut down for asbestos removal
This chamber has two samples, white Ceramabond,
and disks of TRA-BOND #2254
color light brown epoxy. Cavity shut down and covered.
Absorption Test Measurement prototype shut
down and covered
Scatterometer system shut
down and covered
The fused silica substrate RM06-B is in the scatterometer
enclosure.
We have finished the scanning for this substrate
this past Sunday.
The Quantronix 60 watt laser fully
shut down and covered
OTF Lab at Lauritsen ROOM 38
Cavity
#3
no change
The contamination test for (6) new disks of VAC SEAL Epoxy samples
is in progress. Cavity is locked and we are taking measurements for absorption
and ring down for contamination loss every day.
The measurements continue to be the same which means, samples are "clean"
Cavity #2 in progress
Beam waist measurement of the new NPRO 414 is done, preparation for
mode matching and optical set up is in progress
Since our last report, we
have moved the optical table, vacuum chamber, pumps, and seismic isolation
system for the bond-noise experiment from the OTF lab into our new space in 38 Lauritsen. (Many thanks to Dario and Terry
for doing the heavy lifting!) Andri Gretarsson was here last week, and he gave quite a bit of
useful advice on this experiment.
We now have a new computer to
replace the one CDS had loaned us. We installed linux
on it and got it connected to the network, and Jay is now working on
transferring the TNI control software from the CDS computer to the TNI
computer.
HEPI Testing and MC Triple (Ruet, Mittleman and MacInnes)
The vacuum compatible
L4C-Geophones have been installed on the BSC optics table and the chamber has
been resealed. See ilog (2/10/05) for more details
and pictures.
We are still struggling with
the matlab R13 --> R14 update. Our dSpace software has to be updated to remain compatible; maybe
we will be back on line by Monday.
The triple has been takeout
of the HAM so that tests and measurements can be done on it to resolve the
pitch frequency discrepancies between the model and the suspension.
Advanced LIGO BSC Seismic
Short Term Testing Plan
LIGO 1 HEPI Testing will
continue for another 5 weeks ie till end of March.
After this we will remove the leg elements of the LIGO 1 BSC Seismic. The
optics table and the down tube will be supported by scaffolding built up from
underneath. This will enable us to test whether the excess noise that is
observed at the top of the stack is caused by the interaction of the piers with
the seismic resonances. This will probably take a month by the time that HEPI
system is re-adjusted for the change in mass. The support table and the down
tube will then be removed.
Simulation and Modeling (Bhawal)
Mechanical Simulation
-------------------------
(Hiro)
Mark Barton has started working on the mechanics part of the advanced LIGO
modeling. His task is to build a state space based mechanical simulation of the
SEI and SUS. Hiro and Mark worked together to define
the task - phase one - and to setup for Mark to start using e2e machines and
environment.
(Mark Barton) I encountered
some issues running e2e and Alfi locally on my
computer, so I set up an environment to use them running remotely on the e2e
group's server. I created a very simple model in e2e that uses state space
output from my Mathematica triple pendulum model and
got it to run.
FFT Study
-----------
Hiro
is working to calculate the FFT prediction of the optimal heating of LLO4k and
LHO2k. He is also working to calculate the the
reflected field by a cold state IFO to understand the difference between the
locking using the reflected field and the naive locked point of Michelson
cavity, issue being discussed by Andri and Erika.
Beam shift in output optics
--------------------------------
(Biplab)
Studied with SimLIGO and Fit-data
of phase camera images how much the Sideband beam center shifts as a function
of time as it propagates from the beam splitter through a set-up of output
optics.
Simulation of 40 meter
interferometer
-----------------------------------------
(Monica) Implementation of hardswitches and psd module for
all the degrees of freedom used in the e2e 40m package. Simulations
of the complete interferometer (without Mach-Zehnder)
with a differential shake (white noise) on terminal mirrors in orders to obtain
results to compare to Twiddle ones. Trying to make some sweep sine with
e2e code to compare tem with the ones evaluated with Twiddle.
Code development and maintainance
-----------------------------------
(Hiro)
Bug of the modeler was fixed related to beam peak finder. Other maintenance
updates, codes and documents, were done. A new version, 3.0.0 will be released
soon. The major change is the inclusion of the adoptive thread chain
implemented by Matt.
Alfi
-----------
(Bruce) Updating
Alfi documentation.
(Melody) Performed
regression testing using the new JGo library.
Notified Bruce of any problems found in the code. We anticipate
distributing a new ALFI release soon with the new JGo
library.
Data Analysis Activities (Lazzarini)
Brown:
- Gave Alan Weinstein and
Lisa Goggin a tutorial on the inspiral
pipeline (which is similar to the ring down pipeline which Lisa will be working
on). They both successfully ran the pipeline on the LDAS-CIT cluster.
- Worked on running the inspiral code online during E12. This ran at all three
sites after we uncovered some problems with the L1 calibration data. Triggers
were produced for 30% (L1), 75% (H1), 63% (H2) of the
science mode data. The major loss in data in L1 was due to bad calibration
related to a corrupted calibration frame at the start of the run and DMT
dropouts from SenseMon.
- Produced triggers for the
hardware injections that Steve Fairhurst and Patrick
Brady performed in the E12 L1 data. Preliminary analysis was completed in less
than 40 minutes with complete analysis the next morning at the face to face
meeting. Details were presented at the E12 telecon
(we recovered a 1.4,1.4 M_sun
optimally oriented injection at 14 Mpc!)
- Started the InspiralMon DMT viewer tool at the site on Sunday evening.
This ran without errors, displaying the results of the online code, until I
stopped it on Wednesday. I will talk to John Z about getting this into the DMT
process manager before S4.
- Attended inspiral face meeting at LLO. The focus on Saturday morning
was choosing the final the parameters for the BCV search and the S3 pipeline in
the afternoon. Saturday evening Patrick and I discussed plans for online
running in S4. Sunday morning was on group plans for now until the LSC meeting.
I will be focusing on S4 online analysis. Also discussed review committee
comments on the MACHO paper and I will send out a revised draft next week.
- Worked with Andy Rodriguez,
who was visiting from LSU on integrating signal based vetoes into the inspiral pipeline.
- Collated input for and
mailed out the LSC newsletter.
Creighton:
I've mostly continued working
with the Einstein@home validator.
The validator code itself seems to be bug-free, but
some of the peculiar results that it chatches have
pointed out ``bugs'' (actually non-robust features) in the search codes.
In particular, the search code I/O functions need to check more carefully for
corrupted input, or else one spends a lot of time analyzing garbage that the validator will eventually discard.
Mendell:
Attended
the PULG F2F meeting in
Mandic:
With Peter Shawhan, I worked on hardware injections during the E12
run. The mechanics of injections for all four types of injections (bursts,
pulsars, inspirals, and stochastic) worked fine. We
are waiting for feedback from various analysis groups, to confirm that the
injections were really detected by the various analysis codes.
With Albert Lazzarini, I worked on understanding the nature of the
cross-correlation spectrum in the stochastic analysis, and on understanding its
behavior under time-shifts.
I also redid the S3
stochastic analysis of the H1L1 and H2L1 Hann cases
(with no time-shifts) using new (V3) calibration, new data quality flags, new
frequency range (50-500 Hz) and new frequency mask.
Shawhan:
* Worked on revisions to the
S2 untriggered burst search paper.
*Worked with Andres Rodriguez
(visiting from LSU) on his implementation of a waveform consistency veto for inspiral searches, based on the time series of matched
filter output and chi-squared statistic.
* Planning for the Burst
Group face-to-face meeting at Caltech this weekend.
Shourov:
Studied the
detection efficiency of a coherent search for simulated bursts in the S2 H1-H2
data set using the new calibrated Q Pipeline with amplitude and phase
consistency tests.
Sutton:
Over the last two weeks I've
had a number of small one-off tasks. I did some DMT-related work, helping
Whelan and Klimenko to use the new EasyCalibrate DMT codes for their figure-of-merit monitors
in E12. I've done some quality-assurance tests of the LIGO-AURIGA MDC frames.
I've done some data conditioning on the supernovae waveforms that we will use
for the S3 MDCs. I also posted to S2 bursts elog a revised IGEC comparison proposal using tau=0.1ms Gaussian. Finally, I've been working with Lazzarini to update the LIGO-TAMA MOU.
On the more interesting side,
I've been studying time-frequency representations of signals, and derived a
maximum-entropy representation of signals with specified mean time, duration,
mean frequency, and bandwidth: Gaussian-modulated linear chirps. These
should be very useful ad-hoc signals for exploring the LIGO cheese. I've had
two meetings with Tinto, Lazzarini,
Chatterji, and Shawhan to
discuss a research project to tackle the inverse problem for GWBs. I also travelled to
Yakushin:
1) Ran waveburst
online during E12. Found some bugs in my online scripts that will be fixed
before S4. Waveburst triggers were used for evaluating
of the interferometers performance during E12.
2) Started MDC generation for
the whole S3.
3) Learnt how to install and
configure Carrot. I would like to use Carrot as a way to publish online waveburst triggers during S4. The advantage of Carrot is
that one can view and plot the content of a ROOT file using just a web browser.
Since waveburst produces triggers in the ROOT file
format, it would be an extremely convenient way
to make the triggers immediately available and easily browsable.
Lazzarini: Looking into using a time-shifted analysis to
discriminate insturmental noise from signal for the
H1-H2 stochastic analysis. This is work being carried
out with Vuk Mandic.
LIGO Data Analysis System
Software Systems (
LDAS:
A bug was discovered in the createRDS process during the E12 run. As a result a half
dozen or so frames were either improperly constructed or not generated. The
source of the issue was two fold. The driver script that submits jobs to LDAS
had a minor bug that was rarely exercised and LDAS's frameAPI had a bug that was also rarely exercised. The E12
run was sufficiently long compared to the pre-release testing to uncover these
issues. Fixes for both have been made and a new release of LDAS is planned
prior to the start of the Science Run.
LDAS will go into a code
freeze Thursday February 10 to stabilize the code base. We will only have one
weekend to test the code thoroughly before it needs to be pushed to the sites
for the science run. The expected release date is Friday February 18th if all
goes as planned.
Worked out a new set of test
scripts that are based on the dataStandAlone command
that allow us to push more jobs through the dataConditioningAPI
in an effort to accelerate the new memory leak issue in the dataConditionAPI
and more quickly turnaround our test and evaluation times.
Upgraded
several LDCG packages: wget, gsl,
rrdtool, ganglia, and removed cvspasswd
since openssl passwd
provides the same functionality.
Updated the
scancluster utility used to diagnose issues on the
clusters and commited the changes to CVS.
Added a fix
that resolved the issue with corrupt log files showing up on LDAS systems from
time to time. This has been a rare
occurence going back more than a year. The problem
was traced to parallel log file updates. The process has been serialized and
the corruption has not been seen on the LDAS-DEV system since. This is
significant since it was showing up almost daily on that system when it was
under heavy load.
Performed system tests of the
code based on CVS tag 1.4.16. All test performed as expected indicating that
the code is reasonably stable for the next release.
TCLGLOBUS:
Working on Tcl scripts to exercise asynchronous functionalities
of
Globus I/O. The functions
are:
1. globus_io_register_close()
2. globus_io_register_read()
3. globus_io_register_write()
4. globus_io_register_writev()
5. globus_io_tcp_register_connect()
6. globus_io_tcp_register_listen()
7. globus_io_tcp_register_accept()
Fixed typemaps
issues of various Globus I/O function arguments.
Completed 2 Tcl scripts (blocking file copy and blocking
client/server)
to
exercise blocking
functionalities of Globus I/O.
Five out of 96 SWIG-wrapped Globus I/O functions are still buggy. The
functions are:
1. globus_io_read()
2. globus_io_register_read()
3. globus_io_tcp_register_connect()
4. globus_io_register_select
5. globus_io_secure_authorization_data_get_callback()
GRID3/OSG TESTBED:
Began
putting together the LIGO Application Testbed based
on the Inspiral job. Learned how to install LAL, LALApps,
and the LSC's GLUE packages and will be meeting with
Hardware Systems (
LDAS System Administration
--------------------------
Caltech
-------
(Dan Kozak)
* Set up/debugged login
problems with some grid accounts.
* During E12 run, continued
work on tuning LDR, but ultimately determined
that
the current version probably couldn't do what we wanted in terms
of
prioritizing L3/L1 data but transferring L0 in any remaining bandwidth.
* Worked on keeping LDR
running and transferring data during E12.
* Looked into M6 LLO L1 data
corruption (L1 frames were corrupted during
transfer
from LLO to CIT as best we can tell). Replaced these files in
CIT /archive with good
versions from LLO /samrds so that Murali
(who'd
first
noticed the problem) could get them.
* Helped Vuk
Mandic with LSCdataFind.
* Did E12 md5sum checkout for
LHO L0, all L1 and L3 frames. Some files
still
need to be transferred and some LLO L1's were corrupt and need to
be
retransferred.
* LLO E12 LO tapes shipped,
imported and are being md5sum'd at this writing.
* Kept archiving working at
LHO during E12 despite lack of tapes by
repurposing
second tape copies no longer needed (because the data also
exists
at CIT).
* Some tapes at LHO ejected
from the L700 and put on the shelf.
* Provided support to Scott Koranda's LDR upgrade.
(Phil Ehrens)
* Researched and built
kernels based on Fedora Core 3
2.6.10-1.760
kernel to investigate NFS related kernel
panics on the CIT Beowulf cluster.
* Ongoing debugging of patch.tcl which has a nagging
problem with the stdio handling of
the 'patch'
executable, but not with other programs.
(Al Wilson)
* Finished installing and
setup for BB for the nodes and the systems at Caltech.
* Ordered memory to repair
the 6 systems that are not working.
* Testing Fedora on the ide raid units.
(Stuart Anderson)
* Debugging FC3 cluster node
crashing problem. Currently running with
a
kernel patch provided by Neil Brown.
* Investigating Condor
priority problem.
* Investigating Ganglia
3.0.0.
MIT
---
(Keith Bayer)
* Installing FC3 on new pcraid unit.
* Investigating failed drives
on pcraid#3.
* Reviewing system imager
details.
----------
(Igor Yakushin)
* /frames is doubled in size
and can now hold a week of raw frames (Dan).
* /cluster was created and
QFS mounted on fb1 and Condor nodes to
communicate
the output from astrophysical searches running on the
cluster
to the control room (Dan).
* /fb0_frames was QFS mounted
by both fb0 and LDAS servers (Dan, Alex).
* E12 data archiving, RDS generation
and publishing is running OK so
far.
There was an interruption yesterday caused by the fact that
"segment. server",
publishing
scripts use LSCsegFind, they all died and had to be
restarted.
* Received GigE switch from CIT.
* Two hours after the start
of E12, there was a request from Brian to
add
several new channels to L1 RDS. The new channels appear in RDS
starting
from 791327328. Since at least some of those channels were not
present
in raw frames before that, we cannot regenerate the earlier RDS
frames
with the new channel list.
* Shipped E12 tapes to CIT
* Helped Sukanta
to get data for the analysis of stochastic injections.
* Configured E12 databases at
LLO and LHO for online backups. Stopped
taking
online backups of S2 and S3 databases since they are not updated
anymore.
-------
(Greg Mendell)
* All E12 data was
successfully archived at LHO. E12 RDS data was
generated,
and there were 4 job failures during the run, due to minor
bugs
in the createrds script and LDAS. These bugs
have been fixed, and
testing
is taking place to prepare for S4 RDS generation.
(Ben Johnson)
* E12 has started. Most work
going into getting the publishing code up
and
running. For the most part it works, though it depends on external
(to
ldas) machines due to segment discovery.
* The LHO cluster now has
statically mounted the nodes' NFS shares.
This seems to have
alleviated the problem. Will do CIT directly.
* No disk failures so far, or
robot troubles, for now... The only
troubles
have been due to the automount bug with FC3.
* All Linux machines now at
FC3, except for ldas-gridmon and the
IDE-RAID
servers. ldas-pcdev2 has FC3 installed, but
still needs to be
configured.
* With Dan's help exported 8
tapes from the library. I was then able to
add
28 new tapes into the library.
* Working on generating
daily/weekly/monthly duty cycle stats for the
non-sciencerun data.
* Updating LDR publishing
scripts/subroutines to work with the new LDR.
Also fixing troubles
that occurred during E12 with online /frames
publishing.
General Computing (Wallace)
MIT:
(Keith)
-Investigated and ordered
follow-up matlab toolboxes
Discovered
that some of the utilities have moved to
different toolboxes.
-Ordered DSpace
upgrades
-Windows laptop and desktop
troubleshooting
-Upgraded gc apps fileshare and Sun
machine
-Patched several windows
computers
(
Two weeks worth since I was
unable to submit a weekly last week.
-Replaced the Cisco 3550 with
the Linux firewall and performance seems to be much better. With the
consolidated ruleset, I am getting ~25 times the
performance I was getting on the Cisco 3550.
-Working with LSU on some traffic
shaping issues for LDAS. Now that we are positive that the firewall is
not the bottleneck for bandwidth, we are working LSU so that we can hopefully
get enough bandwidth for LDAS to transfer data to CIT during the runs.
LSU so far has not been able to identify the bottleneck.
-Working on a network issue
for LSU. They cannot seem to get to the weather stations and collect
their data. There are no log entries on the firewall and from what I can
tell the traffic should be allowed. This is unresolved at this point. I
am continuing to look into it.
-Setting up a workstation for
Natalia. Installing Fedora
Core 3 so that she has a supported platform for the analysis software.
-Attended a meeting at LHO
last week. More details will come later. Also working
on a schedule of items that were discussed at the meeting.
-The ilog
crashed the web server over the weekend. I spent Monday night building a
new web server and installing the ilog on it.
There is now a machine named ilog.ligo-la.caltech.edu which serves the ilog. This is a dedicated machine now strictly for
the ilog. Still a lot of work
that needs to be done to the general web server. It desperately
needs to be upgraded. Hopefully I can get this done in the next couple of
weeks.
(Christine)
- Started trying to fix a
problem with old versions of SSH not working with the newer versions of openssh. I am just going to upgrade all Sun computers
to use the new version of openssh with openssl. It took a whole day to get one computer
upgraded. The rest should go quicker now.
-The disk containing the
email and web page files locked up during the early morning tape backup.
This appears to be a warning that the disk is about to go. The disk is
being mirrored on to another disk and will be replaced ASAP.
- Other misc. user support.
CIT:
(Mike)
-Janeen
Romie: Finished loading a new pc for her. This
required loading multiple engineering packages, transferring over user's data
over. I have swapped her out with the new equipment. I am in the process of
reloading her old PC, to use as a visitor workstation.
-Calum
Torrie: I worked with him on getting the Ansys software upgraded to 9.0. I still have to load this
software on a few more workstations.
-Started loading a new laptop
for a user up in Millikan.
-Running some tests on
patches that Microsoft has pushed out for win2000, xp,
and server editions. So far everything seems to be running ok.
-NTSRV's:
I updated PDMWorks & LLPDMWorks
with the latest security patches.
-Other misc. support that
included networking, printers, software issues.
(Veronica)
-LIGO: Website
updates. Security patches /audits of the Windows servers. User support. Helped Bob Taylor with
scripting and setup for the 40m website. Helped
Sydney Meshkov with file transfer for the
- LSC: Website
updates. Worked with Irena on website setup for the MOU
reviews. Updates of the March meeting website.
Working with LLO and an outside ecommerce vendor on setting
up an online payment /registration webpage. Worked
with Linda on updates of the current MOU webpages.
Helped Linda with html and installed the new pages at ligo.org.
(Larry)
-This has been an interesting
week in preparation for the temporary office relocation's. Hopefully, everyone
now has a location that can work in for a couple of weeks without too many
issues. Did spend some time cleaning out some of the offices.
Past occupants left a significant amount of material in the offices. Did a walk
through with PMA and they had the ceiling tiles replaced in a couple of
locations. Did not find any damage from the smoke coming in through the air
vents, and it did not look like any of the smoke made it to the computer room.
Reviewed how things are going to move and on where everyone is going to, with
different people. We will try and get some people moved this week so Mike
doesn't have to do everyone at once and by himself.
-Continual monitoring of the
backup system. We have definitely outgrown the old system and fortunately Lisa
is here and is updating the system.
-Assisted Mike trouble
shooting a couple of minor problems with new installs.
-Worked with the DCC on a
couple of issues and participated in the committee meeting.
-Worked a number of licensing
and procurement issues. Still have a few items to work out with Foundry. The ansys s/w and licensing has arrived. Still working with
Caltech on the IDEAS licensing and the SUN OS upgrade licensing.
-The e-mail issues have been
many this week. There were a couple of locations that were storming us with
spam. We now have most of them blocked. The lsc-all
alias list had a problem with another mailserver.
When e-mail was sent to lsc-all, one of the aliases
would trigger another mailserver to go into a infinite loop and resend the message to lsc-all again. The owner(s) of the alias and the mailserver have been notified of the problem. On the local
end the lsc-all list is maintained by another
database and whenever that database is updated it would put the offending
e-mail alias back into the lsc-all alias file. The
owner and programmer of the routine have been notified of the issue.
Mail Statistics Feb 03, 2005
- Feb 09, 2005
Rejected
10,377
Virus
1,073
False
Positive 102
Allowed
13,478
Total
e-mail 23,855
-There was plenty of regular
user assistance: account modifications, file restoration, h/w replacement, new
accounts...
Adv. LIGO Systems
from Dennis
Coyne
See also:
See also the RODA
status web page
·
no new RODAs
·
Work to define the BS dimensions continues. Mike Smith and Bill Kells are considering scattered light budget and
diffraction respectively. Hope to resolve by April SUS update Requirements
Review.
See the
"Interfaces" section of the AL Systems web
page
·
Coupled SEI/Quad dynamics analysis in modal basis seems to indicate that the
perturbation to the SEI control plant may be acceptable. See recent Systems
meeting notes. A report is being prepared.
·
PSL DRR, 3/24 at LLO (day after the LSC)
·
SUS working meetings: Mon 3/21 morning for SUS-Systems/Mechanical issues and
3/24 morning for SUS Electronics interfaces/requirements (Jay, Stuart, et.
al.).
Need to revisit/review the quad SUS design requirements (at least) as the
Also would like to have an "incremental" quad PDR late this year,
after quad controls SUS assembly & installation at LASTI and before testing
at LASTI completes so that preliminary lessons learned can be folded into the
concurrent noise prototype design effort.
From: Ken Mason
<kmason@ligo.mit.edu>
*SEI Structure:
*ASI has completed 83 out of 130 fabrication and assembly drawings. All 83 of
these drawings have been uploaded to their web site for us to review. 34
additional drawings are complete and in various stages of checking with the
remaining 13 still in design.
ASI has also uploaded a solidworks model of the HAM
SEI structure and a finite element analysis file of the BSC SEI structure. We
have downloaded and checked both of these large files.
They are on schedule to deliver the complete design package on
All hardware purchased by ASI will be inventoried and given to Ed Chargois at Caltech. Ed will separate and send to the
appropriate people at LIGO.
*Actuators:
*Nothing new.
From: "Mark
Barton" <maaku@attglobal.net>
AdvLIGO; Laurent Ruet had discovered a bug in the Matlab
ASUS pendulum model - the B matrix for the transverse-roll state space was
incorrect and was giving the wrong transfer functions. I supplied him with
corrected matrix elements and helped him install them.
From: Janeen Romie <romie_j@ligo.caltech.edu>
AdLIGO Suspensions
Working with the sus
team on the upper structure and its process specification.
Collecting hardware lists from sus team to purchase
nuts, bolts and associated hardware.
Had a couple of conversations with Peter King about his photodiode design and
how best to suspend it.
From: Ken mailand
<kmailand@ligo.caltech.edu>
Adv. LIGO
I'm currently learning solidworks, and working on the
lower suspension installation arm to move the lower suspension into the BSC
chamber. Also Im designing a
platform for the modules for the BSC chamber, to fit either the large or small
port tube, and to allow positioning possibilities to clear obstructions that
may be near the chamber.
I spoke to Riccardo re. his
previous experience with the air bake ovens, for possible configurations and
space requirements. This preliminary hardware design showing an oven with a integral wash cleaning platform was sent for quote. The
preliminary cost estimate for this bake oven/cleaning station should be at CIT
in about a week.
I have requested a ball park baking estimate from NTS based on our visit, not a
quote, just an ROM for our budgeting use. We can use this with Astro-Pacs cleaning estimate and other shipping and
handling costs estimates to compare with our in house estimate, for this task.
From: Helena Armandula
<ahelena@ligo.caltech.edu>
Advanced LIGO Coatings
Up-dated information on the inventory web page for "Q" coated
substrates.
Advanced LIGO SUS
Gathering blade data with Calum and B. Taylor.
Writing silicate bonding procedure.
From: Peter King pking@ligo.caltech.edu
AdvLIGO PSL
===========
The exposure test of the high power
photodetector came to a halt when a voltage regulator
passed out, for reasons unknown. No damage was evident to the photodiode.
Everything else checked out okay. The experiment lasted 5 days.
The boards for the second prototype were found to be faulty. This is
believed to be due to an incompatibility between Protel
98 and Protel 2004 in importing the older files into
the newer software version. A large number of ground connections were not
fabricated as a result.
The conceptual design review for the PSL has been scheduled
to be March 24th. The review will be held at LLO.
From: Michael Smith <smith@ligo.caltech.edu>
From: Riccardo DeSalvo
<desalvo@ligo.caltech.edu>
Hareem
The maraging paper is now available on NIM
Author Gateway article tracking service from Elsevier
Article title: Study of quality factor and hysteresis
associated with the state-of-the-art passive seismic isolation system for
gravitational wave interferometrc detectors
Reference: NIMA42883
Journal title: Nuclear Inst. and Methods in Physics Research, A
Corresponding author: Dr. H. Tariq
First author: Dr. R. DeSalvo
Received at Elsevier: 14-SEP-2004
We would like to inform you that your article is now published online via ScienceDirect:
http://authors.elsevier.com/sd/article/S0168900204020637
Alban Remillieux
news about the Mexican Hat production are available in
http://www.ligo.caltech.edu/~desalvo/temp/
Mexican-Hat-LMA.ppt
juri
Studying material properties in thin films and coatings and their effects on
thermal and thermoelastic noise.
Using the measured profiles of the Mexican Hat mirror which was prepared by the
LMA group in
Now I am building a simplified FFT routine (just for one FP cavity) in order to
use the full mirror map for the calculations of the expected mode shape in our
cavity. This will be useful also for the analysis of the maps of the three
mirrors and prototypes and for misalignment effects.
Marco (03 Feb)
We are preparing the OTF laboratory for the asbestos removal works which will
begin the next week.
I took the last data by BeamScanner which will be
substitute by the BeamView Analyzer.
I tested the correct behavior of the two PZTs driver
boards and now Im assembling its box.
Im continuing
to take data at 170oC at the creep experiment.
Marco (08 Feb)
We finished preparing the OTF laboratory and now the works started, the lab is
shut for at least two weeks.
I set the frame grabber and the software to evaluate and get confidence with
the new profiler. I finished the work on the box layout and I will begin the PZTs driver cabling.
Yesterday Riccardo and I controlled the new
suspension blades after their hardening process which we performed two weeks
ago. The comparison with the previous data seems showing that the problem is
the blades composition, not the precipitation treatment.
As an additional test, we are re-cooking the blades a third time, this time at
480oC for 4 hours, which is the commercial precipitation process, to be sure that
the problem is not the oven, but we find it unlikely that the Lucca oven and our oven went bad the same way at the same
time. If this time it does not precipitate correctly, it is either material or
the surface grinding. We are waiting for ground samples from a different
manufacturer for future tests and comparisons
Creep experiment: after a brief rising of the equilibrium point, it has
stabilized around 3.35mm. Then I switched the controller temperature from 170oC
to 40oC.
Riccardo
writing a conference contribution for the Long Beach ASME meeeting,
draft available in http://www.ligo.caltech.edu/~desalvo/paper_asme-2005.doc
Justin
Started in earnest the work on the silicon flex joints.
Calibration of the experimental pendulum apparatus with the
double pendulum and maraging joints. Initial
resonance frequency found around 6 Hz for maraging
flex joints through excitation of the intermediate mass.
For additional information about this report, contact whitcomb_s@ligo.caltech.edu