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The LIGO Executive Committee Agenda for Monday September 23, 2002 will be:
(Meeting time: 10:30 am Pacific Time)
Open meeting 10:30 - 11:30
CR-010012 Rev B--Closeout of Initial Complement
of Computer Equipment for Sites (Wallace)
CR-020012 Rev A--Additional Funds for 40-Meter
Facility Upgrade (Weinstein)
Special Items: Wire breakage incident report and review, S1 Lessons Learned, Upper Limits status, schedule for S2
no report
LIGO Operations--Administration
There was a site teleconference held on Thursday, September 19, 2002. The following issues were among those discussed:
Budgets and Costs--The projection for carry-forward into FY 2003 remains at approximately $3 million. This is the carry-forward for cash flow purposes. All of these funds have been budgeted for necessary items that remain to be purchased in the FY 2002 plan. However, the funds can be used to bridge into FY 2003 and we will adjust the FY 2003 budgets accordingly.
The Annual Report and Request for FY 2003 Funds has been submitted to the NSF via FastLane.
Equipment--Caltech Finance wants to modify the ORACLE systems to enable them to capture equipment data directly from their files instead of using E. Chargois' database. To do this, they will be modifying the description fields just a bit starting in FY 2003. Florence has prepared an email memo describing the changes for people affected (mostly Project Services and the users of P-Card). The plan is to first explain this to the Executive Committee. Then we will distribute the email to all LIGO personnel with followup to selected individuals with the biggest impact.
Livingston Staging Building--Still trying to find a mechanical contractor able and willing to find and identify the problems with the HVAC system.
Have received two quotes for time and material contractor for the Livingston Staging Building walls. Hoping to make a selection this week.
Hanford Laboratory Building--There is a three page punch list, but most of the items are minor. Still waiting for the Fire Department to conduct a test of the fire detection and suppression systems. Expect to begin moving people in soon.
All Terrain Vehicle for Livingston--Procurement is in progress to be provided by a company in Baton Rouge. Delivery is expected in a week or so.
Property--Furniture expected to be delivered to Hanford Tuesday, September 24. Furniture expected at Livingston Saturday, September 28.
Use of Auditoriums by General Public--Ed Jasnow has prepared an email for NSF concerning the use of the auditorium by outside organizations and the notification of the DOE concerning the same. The action (#114) will remain open pending people having an opportunity to review it to assure that it is adequate.
The list of current actions revised to reflect
the status of open actions assigned through September 19, 2002 may be found
at ACTION
LIST.
From: Ed Chargois <chargois_e@ligo.caltech.edu>
>From: Linda Turner - turner@ligo.caltech.edu>
Web pages for the DCC give simple how-to's for document numbering, easy access to the latest on-line documents, and search capabilities for the DCC database. Take a look. . .
ACCOMPLISHMENTS
ACTIVITY
| For
Week Ending 09/19/02 |
Packages | Faxes |
| In | 33 | 32 |
| Out | 8 | 20 |
From: Esther Cunningham <esther@ligo.caltech.edu>
Press here for ACCOUNTS PAYABLE HISTORY DATA .
From: "Brambila, Ruth" <Ruth.Brambila@caltech.edu>
From: irena@ligo.caltech.edu (Irena Petrac)
SUPPORT (Baldon, Torres, Lloyd, Tischler)
>Irene Baldon
(Report covers four (4) days only.)
Weekly Advanced LIGO Project Controls meeting was not held this week.
The Advanced LIGO MRE Proposal remains the Highest Priority
Continue to update the LASTI Schedule and incorporate any changes. Updated the plan with progress as of 09.13.02 and posted to site. Sent out update data requests for progress as of 09.27.02.
Project Plan for the 40-Meter Lab Upgrade continues. Updated the plan with progress as of 09.13.02 and posted to site. Sent out update data requests for progress as of 09.27.02.
Cost Book Tool.
Project Web Site for posting schedule and progress related data continues to be updated with the latest and greatest.
The Annual report and Request for FY 2003 Funding has been entered into FastLane and submitted to the NSF.
The following change requests have been submitted:
| CR-010012
Revision B |
WBS 1.4.4.1 | Closeout Construction Budgets for Initial Computer Equipment Complement at the Sites | P. Lindquist |
| CR-020009 | OPs 1.3 | Digital Common Mode Servo to Mode Cleaner Path | D. Coyne |
| CR-020011 | OPs 5.15 | High Power Test in Suspended Interferometer (Gingin) | D. Coyne |
| CR-020012 | OPs 1.6 | Additional Funds to Complete 40-Meter Facility Upgrade | A. Weinstein |
| CR-020013 | OPs 1.3 | Pentec VME Digital Signal Processing Boards | Withdrawn |
| CR-020014 | OPs 5.14 | High Power Laser for Input Optics R&D | D. Coyne |
We held a LIGO Change Request Board (CCB) during the Executive Committee Meeting on Monday, September 16, 2002. The following Change Requests were approved:
CR-020009--Digital Common Mode Servo to Mode Cleaner Path
CR-020011--High Power Test in Suspended Interferometer (Gingin)
CR-020014--Hogh Power Laser for Input Optics R&D (Approved, but
procurement deferred until PostDoc position filled at Livingston)
Minutes have been prepared (LIGO-M-020367), are being circulated for signatures, and will be distributed.
We did not have adequate information to act upon CR-010012B and will
revisit it during the Executive Committee Meeting on Monday, September
23.
The Board requested that CR-0200`2 be subdivided into a request for
near term funds and a separate one for longer term needs. This information
has been provided and a revised Change Request will be distributed for
the meeting next Monday.
From: Cindy Akutagawa <cindy@ligo.caltech.edu>
No report this week.
Summary of Commissioning Activities at LIGO Hanford Observatory (compiled
by F. Raab)
-------------------------------------------------------------------------------------
(see ilog for details - if it's not in the ilog, it didn't happen...)
2K IFO
------
Work on digital suspension controller installation is entering the
test phase.
4K IFO
------
Software work was completed, reviewed and some tweaks arranged. IFO
has since been locking. New whitening boards are now working on optical
levers for 3 of 4 arm test masses and the last ETM should be going soon.
Big improvements are noted in optical levers, especially in YAW. Although
H1 has been achieving state 4 locks readily, there have been some problems
in transitioning to full common-mode lock. These have shown some improvement
and then regressed, so there is still some issue to be solved.
4K Frequency-noise Investigation - Francois Bondu, Luca Matone and Rick
Savage
------------------------------------------------------------------------------
We began to investigate how frequency noise propagates through the
4k system. First, we looked at the PSL system focusing on loop gain measurements.
We then looked at the correction signal sent to the PZT to have an idea
of the free running laser frequency noise.
We measured 5Hz/rHz @ 1kHz and found a 1/f trend from 100Hz up to 100kHz.
The loop gain measurements show a UGF @200kHz, with the FAST/PC crossover
at 40kHz. The phase at 1kHz is off, however, with respect to the
model we have -- we'd like to look at the electronics
and update the model.
Next, we looked at the Mode Cleaner. Again, loop measurements: UGF @
30kHz with 45deg of phase margin. We used the current calibration for the
VCO, to estimate the frequency noise entering the MC as seen by the MC.
This turned out to be higher than previous measurements: above 100mHz/rHz
from 100Hz to 10kHz with a lot of structure. We'd like to repeat the
VCO calibration and repeat the measurement.
Interferometer: Installation of the new DSC electronics is complete at the X, at the Y end station and in the LVEA. Mode cleaner software is checked out and first field cables were plugged in late Thursday afternoon to begin checking damping. We have been checking the digital enable switching and the analog readbacks for all the installed cabling in the LVEA. We now have a good set of test boards and software. We are making good progress and should be finished soon. We have had no major problems.
CDS: Rolf, Alex and Lori are visiting LLO this week for the Digital Suspension system upgrade. Ash and Joe Kovalik are testing the SOS Epics systems using the test procedure. Also working on re-configuring the frame builders and broadcasters to see the new channels and changes. Called in a Sun support guy for the frame builder2 problem. (Chethan)
LDAS admin:
* The results of 72 hour burn test on the new RAID system: 1 job out
of
513 failed.
* Copied RDS and other data to the RAID.
* Made RAID available for mounting on decatur and delaronde.
* Made /frame?? directories available for mounting on delaronde on
Szabi's request.
* Helping Paul Armor from UWM to setup DB2 backups.
Data analysis:
* Writing wave DSO.
* Learning about grid computing.
(Igor Yakushin)
HEPI / MEPI / LASTI: Working with Amit and Brian at Stanford last week we completed the calibration of 10 proportional valves which will be used to control the LASTI hydraulic actuators. Corwin and I also planned the modification of Stanford's test fixture to accommodate the welded actuator. The initial shipments of components for the welded actuator have begun and fabrication is in progress. Trying to convince Parker to calibrate 3 valves we returned to them for repair. They would do this by placing our calibrated valve on their flowbench and measuring the resistance and differential parameters pneumatically. I'd then like them to adjust the repaired valves to reproduce the measured values. No agreement yet, but they are considering this request. (Kern)
ETF: We've discovered more than a few manufacturing problems on the POD base when we attempted to filed fit it last week. Marcel spent considerable time checking the part against the print and discovered even more disparities. Figuring out whether we can save the parts (unlikely) of have the vendor redo them. (Hammond/Kern)
Optics/Laser Safety: Drafted a revision of the LLO Site Safety plan
to modify the procedure we use to obtain prescription laser eyewear. Spent
yesterday afternoon acquainting Valery Frolov with our resources in the
optics and vacuum prep labs so that he can begin a few tasks. (Kern)
no report
We now have nearly final results from the photothermal experiment using
a cross-polarized interferometer with a solid aluminum test mirror.
Results are shown in the plots below.
On the magnitude plot, the dots show the average displacement of the
mirror surface when driven by chopping the laser intensity in a cavity,
weighted over a TEM00 Gaussian beam, assuming that the mirror absorbs
1.3% of the light that strikes it. The solid line shows the Cerdonio
et
al. (Paris) model, assuming the thermal conductivity of our sample
is
140 J/m*K. The dashed lines show the same model, with conductivity
values of 150 J/m*K (lower curve) and 130 J/m*K (upper curve).
The phase plot shows the phase of the mirror displacement relative to
a
square-wave intensity fluctuation. The lines show the phase predicted
by the same models as in the magnitude plot.
For both plots the agreement between theory and experiment is quite
good. The scaling of the theoretical curve in the magnitude plot
was
fit to the data by changing the mirror absorption (which is not very
well known). There are no adjustable parameters in the phase
calculation (other than the thermal conductivity shown).
LASTI (Coyne, Harry, MacInnis, McKenzie, Mason, Mittleman, Ottaway,
Rollins, Shoemaker, Zucker)
=============================================================
VACUUM SYSTEM (Zucker, MacInnis)
Still at 1 atm for MEPI testing
INFRASTRUCTURE/ETC. (MacInnis)
Myron started reconfiguring the BSC cleanroom and staging equipment
for the HEPI installation. We also began to dig out the machine
shop and assembly lab, which looked like a tornado hit them after the
MEPI assembly push.
PSL (Jamie R, Kirk M, Mike Z and Dave O)
Jamie started laying out his detector front end in Protel. Kirk
has
built a Simulink model of the FSS while patiently waiting for
Mike and Dave to break free some "quality time" to help him light the
real thing up.
MEPI/HEPI DESIGN, FABRICATION AND INSTALLATION (Mason, MacInnis, Coyne)
Heat fins for the electromagnetic actuator have been built and installed
on all 8 actuators. The
support tubes used to stiffen the walls on the MEPI housings have been
added. These are the finishing touches on
installation and alignment of all the MEPI units.
Drawings are being updated and "as built" revisions to
the assembly procedures are
process.
The Genie Lift for installing the HEPI units on top of the BSC piers
has arrived this week. We
are preparing the optics lab for assembly of the HEPI units.
EPI MODEL DEVELOPMENT & SIMULATION (Coyne, Ottaway & Mittleman)
This week we continued our efforts to fully integrate our models. We
have arranged to do a full modal survey of the HAM structure with
Prof. Samir Nayfeh from MIT Mechanical Engineering next week.
We now have a working HAM model which uses the Hytec HAM_SIS model
(stack only), to which Dave has attached a mass to represent the support
structure. Brian Lantz (who wrote the BSC model from which it
was
modified) is actively helping us develop it and has already made
helpful suggestions (found errors).
MEPI TESTING (Coyne, Mittleman, Zucker)
There was a problem in the sensor electronics, which the Caltech
electronics people have now straightened out (THANKS
TODD AND
DAVE!). Until the new version of
the sensor interface board
arrives here {#MZ now expected Friday 9/19}
we are
limited to reading the 8
L4Cs on the piers. We have started taking some simple transfer
functions and should be able to do some comparisons with the model in the
near future.
Simulation and Modeling (Bhawal)
Physics meeting
------------------
Luca described frequency noise characterization in various parts of
the LIGO
interferometers at LHO. Finally these information will be put in simLIGO
model. Matt described his implementation of the matrix operations in
the new
version of e2e code.
Outreach collaboration
-------------------------
Hiro assisted Prof. Sany Yoshida to finalize the proposal to NSF, to
be submitted
from SLU.
Code development and maintenance
----------------------------------
(Hiro)
The results of the simulation runs using g++3.1 and g++2.95.3 are compared
to
confirm that no bugs are introduced in this transition. A good finding
is
that the speed of the simulation is around 1/3 faster:
Time-to-complete-CPU(3.1) : Time-to-complete-CPU(2.95.3) ~ 2:3 ).
This testing was done using gcc on alterf. Whenever the gcc on LDAS
machine
switches to 3.*, the standard of e2e simulation will switch to the
ones
using 3.x. Until then, a personal version will be built in hiro's directory
for those who are interested in using it.
Other clean up of the code was completed, with the help of Melody, to
remove
the dependence on the now-obsolete ALParser codes.
(Matt) Worked on low-level matrix operations to optimize phase
(Guoy, propagation, and reflection) multiplication.
(Biplab) Changes in align_matrix and sum0x0 class were cvs committed
after
satisfactory testing of misalignment calculations, especially yaw
calculations in triangular cavities.
Alfi
-----
(Melody)
- Continued working on the automated tester for alfi5.
- Cleaned up to C++ code to remove methods which were needed
by the old alfi.
LIGO Data Analysis System
Software Systems (Blackburn)
Development of the frameCPP is about 1 - 1.5 weeks behind
schedule. As a result, we have decided to delay our code freeze and
possibly
the next release of LDAS by said amount. Having said that, new frames
have
been written based on the version 6 frame specification and are being
shared
with Benoit Mours of VIRGO for compatibility testing. This has identified
several minor bugs in our code which have been sorted out and fixed.
The
remaining outstanding missing functionality is support for compression.
This new frameCPP is now in CVS and as of today linked into LDAS. The
next
week will see the start of integration of this new frameCPP more fully
into LDAS.
New support was added to the dataConditionAPI to allow raw number sequences
to be shared between the dataConditionAPI, the wrapperAPI, LAL/LALwrapper,
the eventMonitorAPI and the frameAPI. Testing has shown that this is
all
working in the development version of LDAS. This support was needed
to allow
filter coefficients used in the dataConditionAPI to be shared with
other APIs.
The controlMonitorAPI now support monitoring access to any LSC user
with an
activated LDAS user account. This removes one more of the shared accounts
from the LDAS system. LDAS users in the system resource file with adequate
priviledges can also carry out control functions.
The new dataStandalone and putStandalone commands are starting to be
exercised by the Griphyn Collaboration. Several minor issues have been
identified by these first uses which have now been fixed. Progress
continues
towards being able to use LDAS and GLOBUS tools together. Scott Koranda
visited from UWM to assist in the installation of several GLOBUS packages
on
the LDAS software server and onto the LDAS-TEST systems.
Quite a few minor bugs throughout the system were tracked down this
week and
fixed. This is providing significantly better throughput in the system.
We
are able to process almost twice as many jobs in this pre-release as
we were
able to handle successfully in the 0.4.0 release.
A background process is underway to evaluate the readiness of LDAS for
migration to the RedHat Linux 7.3 distribution. The dependent packages
in LDGC (compilers, interpreters, openSSH, etc.) have been build successfully
under 7.3 but LAL and LDAS have had problems. The issues with LAL have
been
reported to LAL-DISCUSS and are being worked at UWM. LDAS compiles
but is
not able to successfully complete jobs that use the frameAPI.
The problem with the nightly loop testing script which caused it to
loose
its metronome has been traced and fixed. This should allow more fixibility
into other issues in the system during our nightly testing (other than
what
is wrong with our test scripts).
The development and characterization of line removal and Kalman filters
within the dataConditionAPI is entering the final lap. These should
be
available in the next LDAS release.
The issue of calibration of the S1 data has most of the upper limits groups struggling to understand how to carry out their data analysis. At the root of the problem are the non-negligible changes in the response of the instrument as seen during the run. This is inconsistent with the model of using a single or at most a few response files to handle analysis of all data from the run during the E7 run. A new paradigm for how we handle calibration has to be developed. At this time the upper limits groups responsible for data analysis are waiting for a more complete characterization of the calibration before settling on a strategy. Possibilities including changes in the DSOs to support both DARM and ASQ channels, along with amplitude of injected calibration channels, or possibly generation of an enormous number of calibration files to handle each epoch of data with its own unique calibration for ASQ. More will come out about this issue in this weeks upper limits group teleconference.
Hardware Systems (Anderson)
Caltech
-------
(Dan Kozak)
* HPSS: continued migration off of Redwood tapes. Installed Solaris
and
did assisted with security
lockdown of new Sun V880 (hpss2) machine.
Did lots of account creations.
Tried to keep up with the demand for
S1 tapes in the LIGO storage
classes.
* SAM-QFS: Continued copying S1 data into SAM-QFS. Hooked up FC
link to
CIT-dataserver
so that data could be copied off of SAM and onto the
IDE-RAID
units. Filled 3 ~1Tb IDE-RAID filesystems. Hooked up GigE
connection
from ldas-archive to the CIT internal network. Will be
using
this connection in preference to the FC connection so that
ldas-archive
can do the copying directly to the IDE systems.
(Al Wilson)
* Setup the IDE-RAID systems (the next set of five) and started the
burn-in
test on them.
* Installed 5 2U "LDAS in a box" servers. They should be ready by Friday.
* Fixed some bugs with the rpmsync files.
(Stuart Anderson)
* Assisting in the installation of the new LDAS IDE-RAID and LDAS-in-a-box
servers and continued interactions with the vendor to resolve
a few
remaining issues with bad units.
* Finished archiving all of the LLO S1 data to HPSS and SAM-QFS and
~60%
of the LHO S1 data. The LLO AIT-2 tapes have been sent back
to LLO.
* Successfully read back 273GB of LLO data from SAM-QFS while it was
archiving
the LHO data.
Livingston
----------
(Igor Yakushin)
* The results of 72 hour burntest on the new IDE-RAID system: 1 job
out of
513 failed.
* Copied RDS and other data to the IDE-RAID.
* Made IDE-RAID available for mounting on decatur and delaronde.
* Made /frame?? directories available for mounting on delaronde on
Szabi's request.
* Helping Paul Armor from UWM to setup DB2 backups.
(Shannon Roddy)
* Helped Igor with an issue on the RAID server involving the network card.
Hanford
-------
(Greg Mendell)
* All pre-S1 injections, S1, and post-S1 raw data where archived onto
tape and have been sent to Caltech. All S1 RDS data where
archived
onto tapes and have been sent to UWM and MIT.
* Available S1 data on disk at the sites is described below:
The LDAS diskcache APIs have been updated to see all the available
raw
frames with pre-S1 injection, S1, and post-S1 injection data
that is on
disk at the sites. Thus, LDAS jobs can run on any of the data.
These
data are also visible from fortress at LHO and decatur at LLO.
Details
are below.
* At LHO, all raw frame data for injections from the week before S1,
all the raw frame data from S1, and all the raw frame data from
injections done after S1 are available.
Guild reports the following data relevant to S1 is available at LHO:
H R 714023808 714045616 /frame10/preS1AugInject/Data*
H R 714111520 714117440 /frame10/preS1stochasticAndpemInject/Data*
H R 714147264 714335344 /*/Data*
H R 714335568 714335664 /frame12/full-frames/Data164
H R 714335920 714537184 /frame*/full-frames/Data*
H R 714537232 714537424 /frame21/full-frames/Data220
H R 714537664 714862272 /frame2*/full-frames/Data*
H R 714862368 714862656 /frame22/full-frames/Data310
H R 714862912 715145296 /frame22/full-frames/Data*
H R 715145392 715145520 /frame22/full-frames/Data388
H R 715145760 715191552 /frame*/full-frames/Data*
H R 715191648 715191696 /frame11/frames/full-frames/Data11
H R 715192096 715265856 /frame11/frames/full-frames/Data*
H R 715266112 715402432 /frame11/frames/full-frames/Data*
H R 715402480 715402592 /frame11/frames/full-frames/Data70
H R 715402992 715705760 /frame1*/full-frames/Data*
These data are also visible from fortress at LHO:
Hints: Use "ls -Lltr" to resolve symbolic links and get modification
times on directories sorted in reverse time order, to find the
data you
are interested in. If you want to see just some of the
data, make
symbolic links in your home directory to just the data directories
you
want (see man ln).
/frame10/preS1AugInject/Data[0-6] contains injections from the
evening
of Wed Aug 21 to the morning of Thu Aug 22.
/frame10/preS1stochasticAndpemInject/Data0 contains stochastic
injections from the evening of Thu Aug 22 to the morning of
Fri Aug 23.
/frame10/preS1stochasticAndpemInject/Data[1-2] contains pem injections
from the evening of Thu Aug 22 to the morning of Fri Aug 23.
/frame10/beginningS1/Data[0-32] contains the first 33 hours of S1 data.
/frame30/moreBeginningS1/Data[0-10] contains the next 11 hours
of S1
data.
/frame11/frames/frames/Data[0-389] contains the rest of S1 data
PLUS
post-S1 injection data.
I believe any gaps in the LHO data during S1 (Fri Aug 23 08:00
PDT - Mon
Sept 9 08:00 PDT) were due to reboots of the DAQ system.
* At LLO, all raw frame data for injections from the week before S1,
most of raw frame data from S1 (excluding parts of day 1), and
all the
raw frame data from injections done after S1 are available.
Guild reports the follow data relevant to S1 is available at LLO:
L R 714023808 714045616 /frame10/preS1AugInject/Data*
L R 714111520 714114224 /frame10/preS1stochasticInject/Data0
L R 714188048 714224048 /frame10/beginningS1/Data*
L R 714242048 714434864 /frame20/full-frames/Data*
L R 714434896 714443392 /frame20/full-frames/Data*
L R 714443440 714697968 /frame2*/full-frames/Data*
L R 714698000 714957456 /frame*/full-frames/Data*
L R 714957616 715171152 /frame11/frames/full-frames/Data*
L R 715171280 715571088 /frame1*/full-frames/Data*
L R 715571168 715703184 /frame*/full-frames/Data*
This data is also visible from decatur at LLO:
Hints: Use "ls -Lltr" to resolve symbolic links and get modification
times on directories sorted in reverse time order, to find the
data you
are interested in. If you want to see just some of the
data, make
symbolic links in your home directory to just the data directories
you
want (see man ln).
/frame10/preS1AugInject/Data[0-6] contains injections from the
evening
of Wed Aug 21 to the morning of Thu Aug 22.
/frame10/preS1stochasticInject/Data0 contains stochastic injections
from
the evening of Thu Aug 22 to the morning of Fri Aug 23.
/frame10/beginningS1/Data[0-9] contains S1 data from part of
the first
evening of S1, from roughly Fri Aug 23 8:30 PM to Sat Aug 24
6:30 AM.
/frame11/frames/frames/Data[0-407] contains the rest of S1 data
(starting from roughly Sat Aug 24 11:33) PLUS post-S1 injection
data.
I believe any gaps LLO data (other than from day 1) during S1
(Fri Aug
23 08:00 PDT - Mon Sept 9 08:00 PDT) were due to reboots of
the DAQ
system. Some of the day 1 data is not on disk at LLO to
make room for
post-S1 injection data. All the S1 data is on tape (no
data that was
written by the DAQ system was lost). We plan to restore
the missing
frames for day 1 at LLO to disk from tape once the tapes with
that data
make there way back to LLO.
Data Analysis Activities (Lazzarini)
Weinstein:
- Working with Mike Landry to understand S1 calibration,
needed for S1 simulations
- Running (slope,tfclusters,power) on S1 (H1,H2,L1)
with various simulated bursts, generating trigger files
for the burst workshop this weekend.
Mendell:
1) Updated the LALwrapper documentation for the knownpulsardemod DSO.
A
copy of the current document is here:
http://apex.ligo-wa.caltech.edu/~gmendell/kpd/knownpulsardemod.pdf
2) Attended the Wed Sept 18 2002 PULG telecon.
3) Worked with the PULG group in preparations for the Fri Sept 20 2002
LSC Upper Limits telecon on S1 data analysis plans.
4) Updated the knownpulsardemod DSO to work with the latest LALDemod
function checked into CVS.
Shawhan:
* Modified the "old" version of the VIRGO frame library, v4r53, to
be able to
read version-5 frames produced by LDAS.
* Released new versions of LIGOtools packages Fr, dtt, lal, and lalapps.
* Set up things so that DTT can access all raw S1 data remotely, via
LDAS and
the Data Flow Manager.
Yakushin:
* Writing wave DSO.
* Learning about grid computing( AL comment: ... in order to develop
an LDAS TCL interface to gridftp).
MIT:
Activities are focusing in preparing for the Bursts Analysis Meeting
(BAM)
this week at MIT:
1) S1 and E7 data on disk/tape management (Stefan, Laura, Erik)
2) Setting up for S1 DSO and DMT analysis jobs (Shourov, Stefan, Laura).
General Computing (Wallace)
MIT:
(Larry for Keith)
-Worked out a few network items.
-Went over security documentation and will be developing it more
over the next few weeks.
-Went over some of the logistics for the NSF review coming up.
Livingston:
(Shannon)
-Almost all of this week has been spent pulling Cat5e in the
new building.
-Looking at a couple more sendmail issues. Still have a few
unresolved at this point.
-Started installing some of the site licensed software on a
couple of machines.
-Went over a number of procurement items with Larry. New GigE hardware
and network configuration software.
Hanford:
(Christine)
- Completed installation of the latest version of ssh on all GC UNIX
computers. Advised CDS/GDS of the incompatibility between the
latest
OpenSSH and older versions of ssh.
- Helped set up a new computer with the GC standard software package
and
networking. Found that Exceed 7.0 has display problems on the newer
IBM
and Dell laptops that requires a patch from Hummingbird to fix.
- Ordered a new color printer for the new office building. Ordered
a
new computer for a new staff member.
- Started installation of the latest sendmail software. The switch
over
to the new software will have to be scheduled for a weekend when it
will
cause the least disruption.
- Installed another wireless access point in the new building.
CIT:
(Mike)
-Worked on Linda Turners computer. She was having problems with computer
freezing up. Larry suggested that I replace the hard drive & this
worked so
far everything seems to working okay.
-Started loading 3rd floor community computer that is equip with scanner
&
cdrw. This was a win98 load and I reloaded this with 2000 pro.
-Backed up Helena's computer and am loading this with 2000 pro. I came
across a
few hardware problems that were preventing me from loading, this turned
out
to be a memory and cdrom problem. It is up and running now.
-Started reloading Larry J.'s computer with 2000-Pro, for this computer
was
still loaded with win98.
-A new Laptop that I loaded this with General Computing software and
updated service packs is ghosted to the back up server.
-Working on a test webserver to swap out one of the NTSRV's. I ended
up
having to reload this server due to problems with .asp web pages.
-Worked on Pherkab & Antares there was a problem with Time Target.
After
trying different techniques to correct the problem that was getting
me know
where; I ended up contacting Time Target support people and they suggested
that I upgrade to there current version. After I did this everything
seems
to be working now.
-Project Science website was down due to connectivity problems after
rebooting our switches and server everything seems to be working. What
ever
glitch that was going on seems to gone for now.
(Wendy)
-With Mike, loaded and ghosted PCs with win2k
(Veronica)
- LIGO website: kept working on LIGO Press and Media Information website.
Processed a batch of over 20 scanned images for posting. Added webpages
for other GW projects and for LIGO photos. Reworking the website layout
to
accommodate these last-minute changes.
Posted updates to homepage, news, meetings, fellowships webpages.
Working with Linda on DCC-related issues.
Caltech is about to launch a new campus-wide web search engine. Checking
if the LIGO pages are sufficiently indexed, and whether any sensitive
content shows in the search.
Working on the webpages for the Aspen 2003 Winter Conference.
- Project Science website: posted several updates. Modified the
registration form script.
- CaJAGWR website: working on an update for the schedule of seminars
for
the Fall term. Did some minor administrative arrangements for Fall
seminars.
- LSC website: updated MOUs, list of talks.
Submitted the videotape of the LSC public lecture to Digital Media
Center
for processing/digitizing.
Met with Larry and Linda regarding the access to closed session talks
of
the last meeting.
- LDAS website: looked into how to modify the cgi script that builds
the
LDAS webpages. Still a work in progress.
- GNATS: Meeting with Szabi to discuss the status and what needs to
be
done.
(Lisa)
- Worked with the telephone on putting through an order to get the
800 number
converted to ISDN. It will be a couple of more weeks before they
can give us
an estimated time of completion.
- Installed a new version of netscape on sirius. The plugins
for acrobat, flash
and realplayer work but there are problems with the java. Netscape
no longer
has new solaris versions available for download from their web site.
I'm not
sure what sun's plans are for browser integration in the future.
- Began compiling a new version of sendmail that has support for smtp
over TLS.
- Created a new mailman list for Albert.
- Worked on restoring a tape archive for Julien Sylvestre. There
is an error in
the second archive that I'm having trouble getting around.
- Worked on resolving a problem for Szabi where /tmp is mounted with
incorrect
permissions after a reboot.
(Larry)
-Resolved a couple of network issues. Had Mike move one of the PC web
servers to
another switch, which appears to have improved the performance for
access on
that web server. Going through some of the network connectivity and
will be
setting up some monitoring activities at different points on the internal
network.
-Finally, finished the SUN maintenance contract. Removed all of the
servers that
are going to be replaced in the next few weeks.
-Resolved a couple of DCC issues and passed the information on to Mike
who was
able to build a more permanent solution by upgrading the Time Target
pkg.
-Working on a number of documents for Albert.
-Resolved a number of financial and procurement issues.
-Worked with Linda and Veronica to setup a new web page for specific
DCC
documents.
-Assisted a number users with different applications.
Lazzarini:
I received a reply to an inquiry I made to DOE/ESnet about gaining
access to ESnet at MIT in order to overcome the
poor throughput performance we have seen. We are continuing to investigate
this issue with the local support
of Erik and David.
From: Michael Smith <smith@ligo.caltech.edu>
40 METER IFO
OPTICS PARTS LIST
Orders pending:
166.033 MHz Pockel's cell is pending from New Focus; 67 each, 1in mirror
mounts are pending from Newport; miscellaneous optical posts and mounts
are pending from ASCO; input mode-matching telescope off-axis parabolic
mirrors are pending from SORL; IFLEX1000 IR laser for optical lever is
pending from Point Source Ltd.
New orders placed:
Three PZT tilt platforms were ordered from Piezosystems Jena. CDS recommended
purchasing the servo control drive electronics and strain gauge read-out
electronics; they will be purchased subsequently.
VAC MIRROR MOUNT
An adapter spacer was designed to enable the 2 in fixed mirror mount
to work with 0.375 and 0.5 inch thick optics. An RFQ is pending before
ordering the 1.5 in and 2in fixed vacuum mirror mounts.
OPTICAL LEVER FOCUS LENS
A top level design was completed in ACAD. Detail working drawings are
on hold.
FARADAY ISOLATOR
A top level design was completed in ACAD. Detail working drawings are
in process. Drawings of the mounting details for the polarizing beam splitters
were sent to Karl Lambrecht Corp for approval.
IFO MODE-MATCHING TELESCOPE
A top level design was completed in ACAD. Detail working drawings are
on hold. The parabolic mirrors will not be available for approximately
5 months, so tilted spherical mirrors of approximately the correct focal
lengths will be used temporarily.
INITIAL POINTING BEAM
The initial pointing beam in-vacuum components were designed. A 2 deg
wedged beam-splitter for sampling the initial pointing beam separates the
back surface reflection sufficiently to be dumped within the short confines
of the BS chamber. Also, the 2 deg wedge compensates for the horizontal
tilt of the input beam caused by the PRM and BS wedges.
IO POSITION AND ANGLE SENSOR
The alignment fixture, consisting of a rotatable and tiltable wedged
window inserted into the IO beam path at an image of the input mode-cleaner
waist, was built and measured. The wedge of the purchased optic, which
was specified to be < 5 arc minutes (1.5 mrad), was measured with an
autocollimator to be <30 microradian, which is too small a wedge to
be useful. An attempt was made to align the position sensor with an optic
that produced a 2.1 mrad beam deviation, but the excessively large angle
caused vignetting in the optical train and the procedure must await receipt
of a wedged optic of approx. 5 arc minutes.
From: ctorrie <ctorrie@ligo.caltech.edu>
ADVANCED LIGO
SUS
MODE CLEANER
Suspension
The pendulum suspension has been taken apart in order to work on some
re-machining of parts. These will be done by a combination of Ric in Physics
machine shop, an outside shop and me. A second assembly is being planned
for next week.
Betsy Bland has been helping set up an optical lever and target to
allow us to look at pitch, yaw and vertical alignment. Helena has
been helping us assemble the magnet arrays, etch parts and clean the hybrid
OSEM's and associated parts.
There are a couple of new pictures at: -
http://www.ligo.caltech.edu/~ctorrie/ligotriple.html
Our new LIGO student photographer Jai Ralls started work this morning,
he can be contacted either through Ryan or myself.
Janeen and I are working on tying up some rogue numbers between the
MATLAB model and our AutoCAD and SOLIDWORKS assembly drawings.
Blades and Eddy Current Dampers
Mark Barton has offered to help with our analysis of the prototype
cantilever blades following the data gathered by Janeen., Mike Plissi and
I. As a result of the monthly SUS telecon we will be working with Glasgow
on a basic eddy current damper that can be used on the Caltech prototype
triple pendulum.
From: Janeen Romie <romie_j@ligo.caltech.edu>
AdLIGO Suspensions
Mike Plissi left on Friday. His visit was insightful and fruitful.
We hope he'll come back again soon.
We've gone out for quote on more machined fixture parts. Hopefully,
we'll receive the quote tomorrow. Bendick Machining should complete their
parts by the end of this week. That order includes the magnet fixture for
the LIGOI osems along with some LIGO I osem parts. Mike in CES has almost
completed the second structure.
Bob Taylor reports that the hybrid and LIGO I osems for the MC prototype will not be ready until the end of Sept.
Calum, Norna and I have been working on comparing the computer model, the AutoCAD layout, the Solidworks assembly and the real prototype. There are small differences that we'd like to iron out.
40m Suspensions
Betsy and Helena have suspended the BS, ITMx and ITMy. All optics are
in ovens baking.
From: Riccardo DeSalvo <desalvo@ligo.caltech.edu>
Michael
Leaving, going back to Drexel.
Alessandro
Arrived at Caltech, staying for 3 weeks, focussing on braze problems.
During the last week inspected for delivery the Ultra-Sound cutting
machine, it will be delivered in Pisa by the end of the month.
Stoyan
Measuring X-ray microdensitometry on stress strain samples.
Simulated the point of contact of the needle micrometer. The possible
plasticity and elastic corrections to the measurement are completely negligible
(10-8m)
Hareem, Maddalena, Barbara, Stoyan, .....
Splatting. The splatter is irregular, the problem is that other people
using the splat detune the coil and the splatter misses the laser trigger.
Often need most of a day to retune, make a few splats and then the next
user detunes it again. Need a solution. Will ask Bill to schedule the machine
for 1/2 a week periods both for us and other users.
Also will need to order new coils.
Hareem, Barbara
Updated the DTA computer. Calibrated Differential Thermal Analyser
with the manufacturer, changed the furnace, but still not working properly.
Maddalena
Prepared all alloys, except B17 and B24.
Made Vickers measurements on B18
Xavier
Continuing flex joint studies on Ansys.
Taking over the thermal conductivity measurement from Mike.
Michael
Logging up all data and experiences, wrapping up and handing system
to Xavier.
Michael, Xavier, Hareem, Riccardo
Went to visit Quantum Design to make the point of what learned by Mike,
figuring out what Q.D. needs to do to make their system better performing
and not misleading. Established contacts for Xavier for future developments.
For additional information about this report, contact sanders@ligo.caltech.edu