The LIGO Executive Committee is cancelled because of the Staffing Committee meeting.
no report
STATUS OF LSC MOUs
(Petrac)
(LSC Research Plans through February 2005 and Progress Reports
through August 2004)
ACIGA
CaRT
Caltech-CEGG
Florida
GEO
IAP
Loyola
LSU
SLU
Syracuse
Columbia
Orsay Group
VIRGO
SITE TELECONFERENCE (Lindquist)
No site teleconference was scheduled for Thursday, September 23,
2004.
The list of assigned actions updated through September 16, 2004 may be found Here.
PROPERTY MANAGEMENT (Chargois)
>From: Ed Chargois <chargois_e@ligo.caltech.edu>
DOCUMENT CONTROL CENTER (Turner, Mak)
>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>
Financial reports can be found at: http://docuserv.ligo.caltech.edu/~fireport.
(For passwords contact Florence)
SUBCONTRACTS MANAGEMENT (Petrac, Jasnow)
>From: irena@ligo.caltech.edu (Irena Petrac)
>From: Ed Jasnow <jasnow@ligo.caltech.edu>
SUPPORT (Baldon, Kammerling, Lloyd)
>Irene Baldon
>Sharon Kammerling
>Dorothy Lloyd
PROPOSAL and REPORTS (Lindquist)
Schedule of proposals and reports planned for the remainder of the calendar
year.
CHANGE CONTROL/CONTINGENCY MANAGEMENT
(Lindquist)
HUMAN RESOURCES (Akutagawa)
>From: Cindy Akutagawa <cindy@ligo.caltech.edu>
Quality/Safety (Tyler)
>From: Bill Tyler <tyler@ligo.caltech.edu>
No report this week.
.
Summary of Commissioning
Activities at LIGO Hanford Observatory (Landry)
(Raab)
John Worden and Fred Raab attended a scoping meeting for the enivronmental
impact study (EIS) on de-activation of the Fast Flux Test Facility (FFTF). Fred
officially commented on the need to consider vibration impacts of entombment
and demolition options on LIGO operations in the EIS. The FFTF complex is 2.7
miles from the conrer station and 3.1 miles from the Y midstation.
A large and predictable seismic disruption comes from groundmoving work to
creat a new disposal pit (IDF) in the Hanford 200 Area. Typical ground
vibration levels rise from 5X to 2X in different bands every workday, beginning
between 6-7 AM PDT, stopping for lunch and resuming until 4-5 PM PDT. This
work, which causes a our NS/NS inspiral figure of merit to drop to ~4 Mpc, is
expected to continue through Dec 5.
(Lubinski)
This week we have started to archive data for potential future analyses {expect
triggered searches such as supernovae, GRBs, pulsar glitches}. So far we have
archived via LDAS 29.75 hours {start date for archiving was ~Sunday
19th}. We have been able to use Peter Shawhan's revised Conlog tool to
find "Clean lock stretches" and then save via Ben Johnson's
"LDAS Segment Archiver tool" Please see elog entries for
details.
An upbeat assessement of acoustic coupling was entered in the elog on the
weekend; see Sat. 18th for an entry by Robert Schofield.
LLO (Zucker et al)
---------------------------------------------------------------------
WIth completion of the EMC retrofit there is a big commissioning push to bring
the interferometer back online. We were encouraged by brief periods of full
interferometer lock Sunday night, but there remains a daunting punchlist of
details.
In addition, the Atlantic storm season is giving us a very high microseism;
without the assistance of PEPI (cut out to make room for HEPI), and with HEPI
not yet fully operational, full-interferometer locking is not easy. The HEPI
crew is under immense pressure to bring the Y arm up as quickly as possible.
We're especially thankful for the expert help of our many visitors, including
(for now) Rana Adhikari, Rob Ward, Matt Evans, Rich Mittleman, Flavio Nocera,
Stefan Ballmer, and Peter Fritschel.
Livingston Outreach (Zucker, Thacker)
---------------------------------------------------------------------
John attended the Association of Science and Technology Centers annual meeting
in San Jose, CA this week along with Dale Ingram from LHO. LIGO has applied for
membership in this association, which offers terrific resources for science
outreach. John also stopped by the Exploratorium in San Francisco
to meet with our partners and play with their toys.
After intensive competition, we have decided to name our new Livingston
outreach center...
We've selected the architectural firm of Eskew+Dumez+Ripple to design it for
us. E+D+R is a premier national firm based in New Orleans with many acclaimed
science outreach, museum, and education projects to their credit. We are very
excited to work with them.
Safety & security (Zucker for Riesen)
---------------------------------------------------------------------
Rich is away on travel. Tom Evans is monitoring safety systems in his absence
and reports no safety incidents this period.
General computing (Roddy)
--------------------------------------------------------------------
Since Bell South worked on the fiber between LLO and the Livingston CO, we have
had no downtime on the internet connection. We have been up for ~11 days
now.
Spent Mon-Wed working with Dave Barker at LHO configuring and testing the new
Foundry network equipment. The equipment is really some nice stuff.
The benchmarks showed exactly what should be expected, however it is pretty
hard to saturate these switches with network traffic without hooking up two
dozen computers for testing. It looks like the equipment should provide
quite a lot of capacity for some time. The LLO equipment should be
shipped today or tomorrow from Hanford and be at LLO by the end of next
week. The one thing I did not get to test at LHO was the use of Jumbo
Frames. I am hoping to test this at LLO since we have the equipment to
support the tests. More to report later, I just got off the plane from
Seattle about an hour ago.
HEPI and L1 Commissioning (Abbott)
---------------------------------------------------------------------
1. Continuing work on HEPI punch list. Recent activity consisted of
curing a flow reversal error on one of the HAM chamber hydraulic lines, it was
noted that this pier had an opposite sign to all other piers. A picture
is emerging regarding the hydraulic accumulators used on HEPI. It appears
as though some of them leak off their pressure, perhaps quite quickly. We
are testing and taking data.
2. A position sensor down at the X-end station was showing a large 60Hz
content with 1Hz sidebands that look much like the SCR fired heater sidebands
that have been seen before. Speculating that the sensor may be damaged
and picking up a magnetic signal in its coils that would normally be cancelled
by the bridges common mode rejection, we replaced the sensor. A quick
check indicates that the sensor no longer shows the 60Hz pollution, but we did
not know the state of the heaters at the time of observation. More
exhaustive testing is needed before we can say the problem is fixed. The
sensor that was removed is being physically examined for damage.
3. Fixed some wiring issues that were stopping the main laser from
turning on. About 4 wires were disconnected in the cross-connects. Once
restored, everything seems to be back up. Have no idea as to how the
wires came out of the cross-connects.
L1 PEM (Lormand)
---------------------------------------------------------------------
PEM Status
D. Lormand
The following PEM channels are operational,
Y-end
Guralp and STS-2 seismometers
The accelerometers
The microphone
The magnetometer
LVEA
Guralp and STS-2 seismometers
All accelerometers except the three on ISCT1 and the one on the PSL periscope
(The above 4 accelerometers will come online after we receive replacement
cables.)
All microphones
The magnetometer has been tested and does work, but has been taken offline
until its power connection can be finalized.
X-end
Guralp and STS-2 seismometers
All accelerometers are producing signals, but the signals are faulty, so these signals
need to be troubleshooted.
The microphone
The magnetometer y-axis signal is suspect, so I will troubleshoot with the
accelerometers.
Data analysis (Yakushin)
---------------------------------------------------------------------
LDAS admin:
1) Made current data in /frames/full available to LDAS on Antony Searle's
request.
Data analysis:
1) Found an error in SN1_S3_P MDC frames. Generated corrected SN2_S3_P frames
and tested them with waveburst.
2) Processed band limited white noise MDC frames WNB1A_S3_P and WNB2A_S3_P, the
results are rather puzzling: efficiency curves for long duration and narrow
bandwidth signals never make it to 100%. Investigating whether the problem is
with MDC frames or waveburst.
3) Published to LDR at CIT the following MDC frames: SG4_S3_P, SG5_S3_P,
GA1_S3_P, SN2_S3_P, WNB1A_S3_P and WNB2A_S3. They are documented here:
http://www.ligo-la.caltech.edu/~igor/MDC/S3playgroundMDCframes.html
Waveburst results on these frames are given here:
http://www.ligo-la.caltech.edu/~igor/MDC_S3_P
4) Working on allowing waveburst to read calibration frames.
5) Working on allowing waveburst to read GEO frames.
6) Discussing with Alexander Dietz from LSU a possibility of automatically
getting GRB information for online analysis.
HPLF (Zucker for Franzen)
---------------------------------------------------------------------
The IPG 100-watt laser passed its safety checkout and was authorized to begin
operations. At this writing it has achieved its 100-watt output specification
and appears to be functioning normally. THE HPLF IS BACK IN BUSINESS!
CDS software (Khan)
---------------------------------------------------------------------
1) Updated the redbook to reflect the current state of the CDS controllers.
2) Investigated the ICS110b problem
3) prepared a proposal for an enhanced DAQ system
see also the CDS weekly meeting minutes in the commissioning archives:
Rolf Bork reporting
- Finished up latest changes at 40m lab. This involved a few
fixes, including getting the ETM test points operational, fixing the xycom bit
settings for white/dewhite filter switching, and fixing the filter coeff reload
function. Jay and I still need to go over this morning to finish putting in the
proper dewhite compensation filters.
- Set up to do more hepi tests to follow up on the ADC
channel hopping problem. I have also ordered a PMC to Front Panel Data Port
(FPDP) module. The idea is to read data out of the ADC modules over the FPDP
instead of the VME bus to see if this remedies the situation.
- Finished up changes at MIT for latest hepi system (2
chamber control).
- Alex has begun work on new Framebuilder change request ie
write data status for each 1/16 second instead of just once per frame. Since we
"denoted" our Framebuilder machine to the 40m lab, we will test new
software there.
Jay Heefner reporting
Fiber Optic Timing Link (Sander)
==============================
- Sander is completing and documenting the tests performed
on the prototype installed on the 40M.
- He has completed the schematics for the GPS to Fiber
Transmitter and Fiber Receiver boards and will send them to the group for
review.
- The fiber fanout schematic is in progress.
Timing System Redesign (Flavio)
=============================
- No action
Anti-Image Filter Modules (Todd, Jay)
==============================
- 10 Boards are in test.
40 Meter
=================================
- Mohana is working on a web based documentation system. It
should be ready for review next week.
- The suspension, DAQ and LSC upgrade is in progress.
- There appears to be glitching on some sus channels. It
appears to be hardware related.
LASTI HEPI (Jay, Ben)
==================================
- Jay Installed components in lab last week. The system
could not be completed. Cable shipments from LLO were delayed due to Ivan.
- Jay Installed optical lever readouts on MC triple and put
connections in for future quad.
- Ben collected and mailed off a box full of connectors,
cables, and modules that Jay needed to install HEPI in LASTI.
LSC PD Redesign (Ben)
================================
1) Ben redid the PCB, in order to move connectors and the PD
footprint. Sent it out to the design committee and will have a review
early next week.
2) Continue to test and characterize the prototype board.
ISS (Flavio)
================================
- Flavio is at LLO for test and installation of system.
EMI Upgrade (Mohana)
================================
- Adding EO and mechanical shutters to LLO LSC drawings.
AdL SEI and SUS
==================================
- No action
TNI (Jay, Ben)
==================================
- Installed EPICS based controls for arm cavity and MC
servos.
Elect Shop (Todd)
==================================
- Continued spares production for LHO.
- Fabbing 100 4-pin EMO cables for LHO.
- Fabbing 10KHz LPF boards for LLO ETM PDs.
PeterKing
I have been checking out the state code that controls the
10-W laser AC current adjust actuator, as the behaviour is not quite what I
expected. Alternatively there
could be a logic problem in the state code that I have overlooked.
Ken Mailand
The mode cleaner is complete, and I informed Keita Kawabe
that the complete package will arrive @ LHO Friday.
Ken Mailand, Lee Cardenas
I have completed several flow rate, and chiller temp tests,
and given the data to Phil Willems, who is working on a control circuit
The chilled water heat exchanger flow rate will regulate the
reservoir water temperature.
A signal from a thermal couple at the laser water input will
open and close a 30VDC proportional valve to regulate the chilled water flow
thru the heat exchanger; the valve flow will be tested tomorrow morning.
The closed loop circuit test should be complete this week. I
sent a PDF of the complete assembly to Cheryl Vorvick @ LHO and spoke to her
re. the house side plumbing connections to the Laser and Chilled water.
Mike Smith
I have begun looking through the LHO e-log to gather
pertinent observations about the ellipticity of the output beam.
Lee Cardenas, Liyuan Zhang
OTF Lab. (W. Bridge)
The chamber has two samples, white Ceramabond, and disks of TRA-BOND #2254
color light brown epoxy. Cavity is locked.
We continue taking measurements everyday. No Change
Data will be treated for ring down and absorption.
Absorption Test Measurement prototype in standby
Scatterometer system in progress!!
We have installed the Inner test mass 2ITM04 fused silica mirror in the
scatterometer enclosure.
We have finished alignment and mode matching. The scatterometer head is
installed.
We are scanning the 2ITM04 mirror for scattered light and it is in progress
now!
The Quantronix 60 watt laser No change
*We have installed the new laser enclosure.
OTF Lab at Lauritsen ROOM 38
no change
Cavity #3
Chamber is pumping with (6) disks of TRA-BOND #2151 color blue epoxy and
(4) disks of TRA-BOND #2902 color silver epoxy. The cavity is
locked.
We continue taking daily measurements.
data will be treated for ring down and absorption.
Cavity #2
The new chamber is IN but we still waiting on the viewport windows 2B baked.
The base holder for the cavity is also in for cleaning and baking.
PSL Laser lab Laser in standby
This week we had a minor setback when the turbopump on our large vacuum
chamber failed. Fortunately, we have two. Akira removed the old pump and sent
it to Varian, then installed the spare. The vacuum chamber is now back to
normal operation. Varian has offered to replace the old pump with a refurbished
one for the same price as a repair, so we don't anticipate "driving on the
spare" for too long.
Also, the noise is back down to its original level, and the unity-gain
oscillations have been suppressed. The new, computer-controlled servo filters
now appear to be working to spec, and the next step is to install the
photodetectors and modify the state code so that the computer can sense when
the interferometer comes into lock.
no report
Simulation and Modeling
(Bhawal)
E2E Weekly Physics Meeting
------------------------------
Sany Yoshida and Raghu from Southern Lousianna University discussed a problem
of mode-matching in their simulation of the LIGO input optics. Virginio
introduced his matlab utility functions which can be useful tools for analyzing
e2e and especially SimLIGO runs.
Mode mismatch and sideband imbalance
----------------------------------------
(Hiro) Lower order modal model is being used to study this issue. The result is
summarized in G040442 and T040177. Using the FFT program, the fields status
under the bright port configuration has been calculated. The imbalance does not
exist, which is consistent with the analysis using modal model. i.e., the
imbalance is caused by the "cavity" formed by Recycling and Input
mirrors.
Phasecamera data
------------------
(Biplab) Interacted with Keita and Luca on the calibration of phase camera
measurements.
Support to SLU group
----------------------------------------
(Biplab) Assisted Sany Yoshida and his student Raghu from Southern Louisianna
University (SLU) for their e2e simulation set-up of the input optics and proper
mode-matching.
40 meter interferometer simulation
---------------------------------------
(Monica) The static configuration of the 40m/Advanced LIGO configuration has
been tested with e2e both for the configuration with EOMs in series (previous
configuration of the 40m) and with the Mach-Zehnder configuration (new one).
Results are in agreement with those obtained with the TWIDDLE simulation
(proposal of the 40m IFO).
Mirror phase map document
-----------------------------
(Xiao, Hiro) A document, T040156-E, summarizing the creation of the
phasemap for FFT has been finihed, and has been submitted to DCC.
Length and Angle correction of FFT runs
-------------------------------------------
(Biplab) It seems calculation of Wave Front Sensor matrix keeping
interferometer lengths fixed gives wrong results. A correct matrix is obtained
only when the FFT is allowed to lock in its own way while the angular changes
are made. As a result faced problem in doing both length and angle corrections
together.
Code development and maintenance
---------------------------------------
(Hiro) Homam / 64 bit machine e2e has been built on the 4 CPU 64 bit machine,
and the performance was compared with halfdome. Homam's speed is 2.2GHz (AMD),
while halfdome is 3GHz (Intel). Without using thread, they run almost at the
same speed. When thread is used, homam is 70% faster than halfdome. One problem
found is that the simulation result is different. The cause is being
investigated.
(Melody) Assisted Hiro with building e2e in a 64bit Linux environment.
(Hiro) A few bugs fixes and updates for newer version of gcc.
Alfi
----------
(Bruce)
- Box Settings dialog and Box Setting Declarations dialog.(4.5 days)
- Employee Appraisal Form and associated
problems. (0.5 days)
(Melody)
Continuing modifications to display the FUNC_X variables in a friendlier
user interface. Currently working on the simple view which parses
the C++ code in the MemberDecl primitive setting.
Data Analysis Activities (Lazzarini)
Mendell;
Work continues on investigations for comparison of StackSlide with Hough and
Power Flux, using S2 and fake data.
Sutton:
This week I wrote and distributed a draft paper on the results the LIGO-TAMA
joint S2 bursts search. I also (almost) finished the new DMT calibration
tool; I will be distributing it after a few last tests are
completed. Finally, I compiled some data quality statistics for the LIGO
detectors in S3 for use in planning the LIGO-Auriga analysis. These consisted
of plots of the band-limited noise rms and the expected amplitude of detectable
sine-Gaussians over the LIGO-Auriga frequency band of [850,950]Hz.
Shawhan:
* Finished my study of "dips" in the arm cavity light intensity
during the S3 run:
http://www.ligo.caltech.edu/~pshawhan/lsc/S3/dataqual/lightdips.html
.
Alsodetermined that these dips do correlate somewhat with inspiral triggers
found in the S3 playground data:
http://www.lsc-group.phys.uwm.edu/cgi-bin/enote.pl?nb=s3detchar&page=9
* Completed a check of the total observation time for the S2 binary neutron
star inspiral search, taking into account the effect of a bug in the LAL
frame-reading software which caused a small amount of data to be skipped:
http://www.lsc-group.phys.uwm.edu/cgi-bin/enote.pl?nb=s2template&page=69
* Worked on final steps of reviewing the S2 known-pulsar paper, plus reviewing
the code used for the frequency-domain (F-statistic) searches.
* Added a new conlog query option to support archiving data collected overnight
by H1 in the "GRB/supernova watch" activity.
Yakushin:
1) Found an error in SN1_S3_P MDC frames. Generated corrected SN2_S3_P frames
and tested them with waveburst.
2) Processed band limited white noise MDC frames WNB1A_S3_P and WNB2A_S3_P,
the results are rather puzzling: efficiency curves for long duration and
narrow bandwidth signals never make it to 100%. Investigating whether the
problem is with MDC frames or waveburst.
3) Published to LDR at CIT the following MDC frames: SG4_S3_P, SG5_S3_P,
GA1_S3_P, SN2_S3_P, WNB1A_S3_P and WNB2A_S3. They are documented here:
http://www.ligo-la.caltech.edu/~igor/MDC/S3playgroundMDCframes.html
Waveburst results on these frames are given here:
http://www.ligo-la.caltech.edu/~igor/MDC_S3_P
4) Working on allowing waveburst to read calibration frames.
5) Working on allowing waveburst to read GEO frames.
6) Discussing with Alexander Dietz from LSU a possibility of automatically
getting GRB information for online analysis.
LIGO Data Analysis System
Software Systems (Blackburn)
The LDAS Account Application webpage now allows applicants to apply for an
active account for up to one year in concert with the LSC decision to have a
yearly MOU process. The extension option now support 6 month extensions,
doubling the previous extension period.
The Problem Report PR 2698 which identified the case sensitivity to email
addresses in the Perl CGI script has now been fixed and closed.
The cacheDump utility now support generation of an explicit file list as
requested in the Problem Report PR2694. Code is now in CVS and the PR should be
closed out today.
Work continues on the new time interval structure for the diskCacheAPI
associated with PR 2392.
Tcl/Globus: While writing swig wrappers for a Tcl Demo to exercise a simple
Globus XIO read, encountered a major problem wrapping the globus_xio_read()
routine. This is still under investigation, but a work around has been
theorized and will be tested shortly.
A prototype version of the frameAPI running on one of our tandem systems now
supports writing out multiple frames per file in the createRDS command. The
ability to read these back into the createRDS process is still missing and will
be added in the next week. This new code default to the previous mode of
generating RDS frame (i.e., one frame per file) if the new options specifying
the number of frames per file is missing, allowing for backwards compatibility
with existing scripts.
Began work on supporting time series concatenation within the createRDS
command.
Standard controlMonitorAPI client tests to allow testing of all users and nodes
associated with the mpiAPI will be added to CVS today (PR 1780).
A new genericAPI "thread-wake-up" function has been tested
successfully and added to CVS. This address the lightWeightAPI's PR 2355.
Updated the system and integration test documentation webpages with new links
to the actual test scripts and descriptive test documents. This is a work in
progress.
Completed the LDAS system/integration tests on LDAS version 1.2.10 and updated
the webpages to reflect results. No issues found in testing.
Updated createRDS test scripts to use the SAM/QFS mounted scratch space on the
LDAS Dev and Tandem systems. This improved LDAS performance by a few percent
over standard NFS.
Worked with the LAM-MPI developers to identify a bug in the 7.1 version of LAM
that we are using associated with the mishandling of the lam-killfiles file
persisting across LAM restarts. A fix will be available in LAM version 7.1.1
and a patch has been provided for current vesion. A problem report on this is
filed (PR 2709).
Worked on PR 2705, LDAS user commands that attempt to retrieve hundreds of
remote files via http or ftp cause manager to behave erratically. Worked on
determining a sensible protocol for this involving the use of tar and untar.
Tested several techniques for guaranteeing known location of untarred user
files.
KB subscriped to the policy and security mailing lists of the Open Science Grid
Project. The secure group has already posted a breakin that sucessfully substituted
ssh with a version that captures passwords.
KB also reviewed all the presentations posted on the web from the Sept 9-10 OSG
workshop held at Harvard.
Hardware Systems (Wilson for Anderson)
LHO
Greg
1) I have added to the lscsoft/lalwrapper/dsorun cvs repository new scripts to
run createrds.tcl as a cron job. The purpose here is to allow LDAS to see all
the raw data, but run RDS jobs only on segments of the data. The following
scripts can be used to schedule createrds.tcl from a cron job, and in particular
to run on 1000 s of data every 100,000 s: createrds_scheduler.tcl,
createrds_scheduler.rsc, one_percent_times.tcl, and one_percent.rec. The
resource file createrds_scheduler.rsc sets variables used by
createrds_scheduler.tcl. The createrds_scheduler.tcl scripts stops any
createrds scripts running from a directory called createrdsDir, calls
getNextTimesScript to get the next set of times to run on, and updates
createrds.rsc with the new times and starts createrds.tcl. The
one_percent_times.tcl is an example of a getNextTimesScript script that returns
a 1000 s segments of times to run createrds.tcl for every 100,000 s. It uses
one_percent.rec initialize these times. See README.createrdsScheduler in cvs
for more details.
2) I am assisting LDAS with planning for the future power and AC requirements
for the data analysis cluster at LHO.
LLO
Igor
1) Made current data in /frames/full available to LDAS on Antony Searle's
request.
CIT
Hari
1. Published S3 C01_LX frames into ldas-gridmon
2. Issued new certificates to all the sites
3. Made some changes to the publishing to remove a bug discovered by
Igor
Dan
1. Finished the transfer of non-run second trends for LHO from HPSS to SAM-QFS
(and their subsequent deletion from HPSS). All that remains to do on the HPSS
transfer is to retry the files that failed to transfer correctly the first time
(~300 files).
2. Set up /scratch shared QFS filesystem for DEV & TEST systems to write
output to.
3. Still working on getting a quote from STK for silo maintenance.
4. Finished working with Sun on the problem where shared clients (in this case
alterf) ask for files, but they never get staged. We're going to try it again
when we install 4.2.
5. Received/installed replacement T3 disks for CIT.
Al
1. Testing out some new Tripwire utils I got from the security seminar I went
to. Looks promising.
2. Installed Fedora core 2 on a laptop and desktop machine. Setting up
"kickstart" to work with our install procedures.
General Computing (Wallace)
MIT:
Nothing to report
Livingston:
(Shannon)
-Since Bell South worked on the fiber between LLO and the Livingston CO, we
have had no downtime on the internet connection. We have been up for ~11
days now.
-Spent Mon-Wed working with Dave Barker at LHO configuring and testing the new
Foundry network equipment. The equipment is really some nice stuff.
The benchmarks showed exactly what should be expected, however it is pretty
hard to saturate these switches with network traffic without hooking up two
dozen computers for testing. It looks like the equipment should provide
quite a lot of capacity for some time. The LLO equipment should be
shipped today or tomorrow from Hanford and be at LLO by the end of next
week. The one thing I did not get to test at LHO was the use of Jumbo Frames.
I am hoping to test this at LLO since we have the equipment to support the
tests. More to report later, I just got off the plane from Seattle about
an hour ago.
Hanford:
(Christine)
- Network usage can be seen at
http://www.ligo-wa.caltech.edu/~christin/mrtg/
198.129.208.1_198.129.78.122.html
- Working on a new workpermit web form. Trying to use a PDF form instead
of HTML so the work permits can be attached to elog entries and because the PDF
form has more input widgets. The only problem encountered with the PDF
form is how to automatically write the work permit number to the form.
- Trying out a software package to be used as a network monitor. It uses
SNMP to talk to the router, switches and servers then reports back network
statistics and hardware status.
- Rebuilding another Dell, Win2k computer that is periodically dumping memory
to disk and crashing.
- Helping out with the procurement of Solid Works software license for our
site.
CIT:
(Mike)
-Barry Barish: Loaded a loaner laptop for Dr. Barish to take on travel.
-Rana Adhikari &Vuk Mandic: Loaded new laptops for these users, with
General Computing software and some additional engineering packages.
-NTSRV: I updated all NTSRV's with OS and security patches, and checked logs
for system errors and intrusion attempts. Everything looks good.
-Ghost Server: I have been burning DVD's to make room for additional backups. I
am getting ready for end of month backups. This server is just about maxed out
of disk space. Larry Wallace is ordering a much bigger unit to handle this type
of server.
-Calum Torrie: I worked on loading PTC pro engineer on a guest workstation for
some visitors that are coming next week. This turned out to be a project that
required a lot of time. I finally got this software up and running.
-Much other onsite/phone user support that included networking, printers,
hardware, OS updates, and software issues.
(Veronica)
- LIGO website: Working on the websites for the upcoming NSF Review and PAC
meeting. Processed a high-resolution image for an APS publication.
Updates to the seminars webpage. User support: e-mail alias, vacation
mail forwarding issues.
- LSC website: Startedworking on the webpages for the next LSC meeting. Updated
the author list posting.
- Project Science: Updates to the pages for the upcoming workshop.
(Larry)
-Spent a deal of time with procurement related issues. Ordering a number of
items for the computer room and other groups. Getting paperwork sent from
various companies took most of the time. We also had a few mis-shipped items
that needed to be taken care of. Most of the Dell equipment has arrived and
Mike is taking care of the units that are to be distributed.
-Spentmore time on the server room. Installing more equipment into the racks
and getting things cleaned up before the fire suppression test. The cleanup is
still going to take some time.
-The new sandbox is on-line and there are a few people testing it out. So far
it looks good. There is still some cleanup work to be performed and a number of
applications to be installed. Hopefully, there will be some testing of the
64bit capabilities in the near future. -Working on cleaning up some of the home
accounts now that the SURF students have left. A number of logistical issues
will be addressed to help simplify their accounts for next year.
-Assisted a number of users with various problems. Worked a couple of printer
issues and some minor network problems. Assisted a number of people with e-mail
issues and helped them clean things up.
(Lisa)
- Helped a number of people whose mailspools had grown to large proportions.
- Worked on an odd situation where certain legitimate email were getting
trapped by the spam filters. I think this is fixed but it needs more testing.
- Installed new video/gigE cards on hadar.
- Put in a PO to add the second autochanger from LDAS to our existing solstice
licenses.
Mail Stats 09/16 - 09/22/04
Messages Accepted:
Spam Rejected:
Viruses Rejected:
False Positives:
Total Mail Thru:
% spam blocked:
From: Larry Jones <ljones@ligo.caltech.edu>
Advanced LIGO Seismic Structure
SEI Structure:
Jasnow and Jones met with McClendon and Scott VanderZyl, ASI's new project
manager for the SEI task, on 9/22. Scott described his philosophy of
management, which, for this task, involves focusing on salvaging ASI's
credibility for cost and schedule. He demonstrated his seriousness in achieving
this by the following:
1. Scott proposed that he develop a proposal for moving the BSC prototype
structure piece part fabrication out of the existing cost reimbursable (CPFF)
contract and into a fixed price contract. We indicated an interest in his
preparing this proposal, as this would be one way for LIGO to contain the
fabrication costs, the largest area remaining under this contract. Scott plans
to update ASI's manufacturing cost to complete on 10/7, and to propose the
fixed price for piece part fab on 10/8.
2. Scott plans to have each individual part bid separately, rather than bid as
packages.
3. Scott has reassigned at least two of the task team members within the team
to better suit his policies, and states that he will guard against "making
room" for others on the team---only adding others as they are absolutely
needed.
4. Scott plans to maximize loading of work on ASI employees that are charged to
overhead, such as the Purchasing Manager and the VP of Engineering.
5. Scott plans to exercise discipline in pressuring for finalizing of
unpleasant tasks, such as completing a global tolerance spreadsheet, the
absence of which has been holding up drawing completions.
6. Scott plans to increase the number of drawings classified as MDDs, to save
labor. These are minimally dimensioned drawings, where (as usual) all of the
details are in the solids model electronic files (which are used to program the
machining and inspection equipment) but only only critical/general dimensions
are on the 2D, paper documents (MDDs). CAD programs make the production of 2D
drawings from solid models quick and efficient; fully dimensioning these is
very labor intensive. Our original contract was written for zero MDDs for
completeness and convenience in future reference; software for accessing
dimensions from the solids model is expensive and is not widely distributed
within the LIGO team. The recent replan increased MDDs to a small amount (approximately
10 drawings), as a cost reduction.
7. Scott stressed the suitability of matching his manufacturing background with
the phase of work remaining on this task.
8. .... you get the idea ....
A meeting will be held with ASI on 9/28 to negotiate which unplanned activities
on their task were caused by LIGO's requested scope changes. These would be
valid items for charging additional fee; otherwise, they can only invoice LIGO
for their costs.
Actuators:
PSI has completed the machining of the bobbins and has shipped them to
Caltech for precleaning.
Bob Taylor has precleaned nickel plated frame parts for the actuators, and
shipped these along with the magnets and plated fasteners to the magnet
supplier for magnetization and assembly.
Displacement Sensors:
ADE is proceeding with fabricating and testing the 14 displacement sensors
for the BSC prototype structure.
Accu-Glass is proceeding with fabricating and testing the 3 feedthrough flanges
for the BSC chamber at LASTI, with 16 feedthrough fittings each.
Seismometers:
Nothing new
Galling/Dusting Test:
Nothing new.
From: Janeen Romie <romie_j@ligo.caltech.edu>
AdLIGO Suspensions
Hosted a meeting with Bob Taylor, Calum, Stuart Aston and Dave Hoyland
yesterday about LIGO 1 osem lessons learned. Before the meeting, Stuart send
along some design pictures of the new hybrid osem and Bob sent some photos of
the LIGO 1 osem. The meeting was useful and both Bob and Stuart will stay in
touch.
We are having problems with ANSYS and Algor software. Mike P. and Larry W. are
helping as it may be a license problem.
From: ctorrie
<ctorrie@ligo.caltech.edu>
Advanced LIGO SUS
2 weeks: From 9th to 23rd Sept 2004
1. QUAD Update
The drawings for the pen, test and reaction test masses are now in the
workshop
The drawings for a clamp jig are also with the Physics shop
Magnet assemblies and their assembly tools, a test ECD and aluminium
place-cards for the blades have also been started to be machined
2. FEA of Structure and 2 concepts for the design approach
Janeen and I have been looking at Corwin's hexapod design and looking at it
wrt the SUS requirements. We are also looking at shorter version of the upper
half of the structure in line with the idea of "3&1" assembly
technique. One idea is to look at the the upper half of the original structure
design on it own.
The following is a link to 2 design approaches we are considering for the
controls prototype
http://www.ligo.caltech.edu/~ctorrie/QUAD_ETM/CIT/Doc1.pdf
3. Blades
Both Valley Precision and CES have started manufacturing the controls
prototype blades.
CES are having the material ground and VP are reporting no delays at this
point.
4. Visit to Stanford
Discussed feasibility of sending the Cal Tech mode cleaner suspension to
Stanford.
Brought up the idea that the ETF could be used to look at coupled analysis of a
"mock-up" of the QUAD structure. (Jan 2005)
Listened to a talk by Corwin on a "hexapod" design for the quad
structure and exchanged files.
5. Design Meeting
For a review of this week's design meeting please refer to the following
link: -
http://www.ligo.caltech.edu/~ctorrie/QUAD_ETM/quad_etm%2520setup%20page2.html
6. Glasgow and RAL
Mike, Ian and I have been working on the top mass and the blade clamps. All
of the drawings for these should arrive early next week and will probably go to
CES for machining.
As part of this CES are making a prototype clamp to address some of the
techniques RAL are suggesting on the drawing.
As more drawings arrive we may have to use off campus machine shops. Mike and I
also had a detailed discussion on approaches for assembling and dis-assembling
the top and UI masses.
From: "Mark
Barton" <mbarton@ligo.caltech.edu>
This week I've been working full time on the revision to the
AdvLIGO
SUS DRD, T010007.
From: Michael Smith <smith@ligo.caltech.edu>
ADV LIGO
AOS
I updated all the costing information except for the optical lever viewports,
and have updated the development schedule for the AOS subsystem.
COC BIREFRINGENCE AXIS ALIGNMENT
I haven't yet analyzed passing the analyzer beam through the COC twice, after
flipping the analyzer beam over with a roof reflector to remove the effect of
the wedge.
From: Riccardo DeSalvo
<desalvo@ligo.caltech.edu>
Maddalena
She left for
The paper on seismic attenuation she wrote is practically in for internal
review for submission to NIM, it is available in.
ligo.caltech.edu/~desalvo/MaddaLFseisATT.doc
The final version of Maddalenas thesis is also available in
ligo.caltech.edu/~desalvo/Maddalena-TesiP040025.pdf
ligo.caltech.edu/~desalvo/Maddalena-TesiP040025.doc
Simone, Francesco:
They finished their SURF time and left for
Francesco:
Provided copy of 3rd year thesis (last year SURF report to DCC, it can be found
also in
ligo.caltech.edu/~desalvo/CostagliolaReport2003.pdf
Nicky:
Creep measurement ongoing, now at 60oC for a couple of weeks. Monitoring.
Anamaria:
Testing the Copper Beryllium blades, with my surprise it is far easier to tune
CuBe blades to lower frequency, the same shape Maraging blades were practically
impossible tu tune below 200 mHz, with CuBe I got easily to 100 mHz (four times
lower K!).
Measurements continuing.
Continuing machine shop classes.
Juri
The results from my simulation program with the new mesh and rescaled lengths
were very strange and the reason for that is still under investigation, but now
I am applying the uniform angular mesh to the problem with the effective
lengths and the results are very good: no more broken symmetry of the problem
and the behavior of the field inside the cavity is as expected. It is clear
that the choice of the mesh plays a crucial role in the numerical simulation
and probably is responsible for the strange results with the rescaled problem.
Moreover I am working on the problem of the spectral density of the coating
thermal noise for finite mirrors and the analytical derivation of it requires
long calculations.
For additional information about this report, contact whitcomb_s@ligo.caltech.edu