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The LIGO Executive Committee
Agenda for Monday March 27, 2000 will be:
(Meeting time: 10:30 am Pacific Time)
Open meeting 10:30 - 11:30
Special Items:
LSC Activities
Significant organizational issues from the LSC meeting.
The next LSC meeting is at Hanford August 15,16,17.
A session on astrophysics for
LIGO II and the planning of the first papers on upper limits using
the analysis of
LIGO I data is being considered for August 14. The idea would
be to invite subsets
of LSC and the astrophysical community to Hanford.
The next GWDAW meeting is planned for Louisiana Dec 14,15,16.
A mechanism for providing the LSC access to LIGO engineering data is
being
formulated. The concept is to have LSC groups request data by writing
a letter
to the Project Director with copies to the LSC Spokesperson, LSC Detector
Characterization Committee Chair and the LDAS Scientist. The letter
is to include
the intended use of the data, the demands placed on LIGO facilities,
the people
who will work on the data at the LSC institution. The LSC Publications
and
Presentations policy applies to results derived from these studies.
A template
letter is in preparation.
The executive committee of the LSC (Lab Directorate, LSC committee chairs
and Lab
liaisons, LDAS scientist, LSC Spokesperson, selected wisepersons) will
meet on the
third Friday of each month by phone at 11AM Eastern Time to discuss
major issues
and respond to new initiatives.
LSC is prepared to support the LDAS proposal and the NSF review of the
LDAS
procurement.
Technical issues to be discussed in another weekly.
WBS 1.2 LIGO Operations--Administration
End of February 2000 reports were distributed prior to this meeting. However, discussion was deferred until next week. Given that costs are currently running at fifty percent of a straight-line budget, all were given the action to be prepared to discuss these cost reports next week.
The monthly report can be found on the network in .pdf format.
From: Ed Chargois <chargois_e@ligo.caltech.edu>
Assisted the Detector Group (M. Smith) with packing and shipping of APS Telescope hardware to the LIGO Hanford Observatory (B. Weaver), delivery confirmed . Account Number P96937.
Assisted the Detector Group (L. Jones) with the disposal of recyclable Stainless Steel Coupons from the 40M Annex and the Bridge Annex Sub-basement.
Assisted the Detector Group (L. Jones) with the packing and shipping of two (2) packages of Stainless Steel Coupons to the LIGO Livingston Observatory (G. Stapfer). Account Number P96919.
Assisted the Detector Group (L.Jones) with arranging transportation for the HAM Ribbon Cable Form being shipped to the LIGO Hanford Observatory (L.Jones) via United Motor Freight. Account Number LIGO.5F500 LIGO 2.2 NSFLIGO.5F5000.
Assisted the Caltech Property Management Section with written procedures and the development of a Disposition From that will enable Projects on Campus to Surplus, Excess or Transfer Accountable Equipment and maintain an audit trail.
| Packages | Faxes | |
| In | 26 | 36 |
| Out | 13 | 39 |
Special Projects: Completed working on Hytec Electronic Drawings. Had a high volume, complicating photocopying job to do.
From: Esther Cunningham <esther@ligo.caltech.edu>
Press here for ACCOUNTS PAYABLE HISTORY DATA.
From: "Brambila, Ruth" <Ruth.Brambila@caltech.edu>
I've been working on closing out encumbrances on poeta's as requested. The majority of the encumbrances were for removals, while two of the transactions were for transfers to a different task. All items on the spreadsheet have been completed with the exception of the removal of an encumbrance on Triad under task 2.1 which I need to inquire on as it appears that funds previously on 2.1 have already been moved to 2.10. While in the process of removing encumbrances, we did find out that several open encumbrances listed as "$0" dollar continue to appear as open transactions when looking at their respective poetas. These "zero" dollar transactions occured a while back and cannot be removed as these lines were "cancelled" while the "received" and "billed" amounts did not match. A while back we did revise our procedures in cancelling lines by having the "received" and "billed" amounts match.
I am working on gathering information on the OAG subscription(s) for LIGO. Looks like one subscription was renewed on an American Express credit card (which appears strange as Caltech normally uses a Mastercard for credit card purchases). I am waiting for the vendor to pull the information on the renewal and get back to me so we can make a decision on the renewal(s).
Continue to set up folders on new change orders to subcontracts which go for approvals across the street.
Gina will be working on bringing current the GE Capital lease for the copier which is in arears and just came to light a few days ago.
Automobile lease on the Chevrolet Suburban is still on hold.
From: Florence Kaufman <fkaufman@ligo.caltech.edu>
http://docuserv.ligo.caltech.edu/docuserv/home/accts_ops.pdf
http://docuserv.ligo.caltech.edu/docuserv/home/accts_adv.pdf
Efforts are underway to develop a policy and guidelines for long-term visitors to the sites. This policy will also determine the financial impact to the sites of supporting these visitors.
Irene Baldon
No report, the hard disk on her computer died.
Rita Torres
For I. Petrac formatted Attachment Z for Stanford University. For P. Lindquist formatted memo Re: Proper assignment of LIGO property, then distributed. Also FedExed to NSF LIGO II Integrated R&D Program for 2000 & 2001, distributed in-house. Prepared books to file December and January reports.
Obtained new input from DCC for lists of SEI drawings. Working with F. Asiri and DCC to create a useable system to quickly access pertinent drawings, project ongoing. Helped D. Lloyd to capture transactions recorded under one Poeta which should have been recorded under a different Poeta. Usual P-card activities, chased some invoices, reconciled 15 this period. Did site trip updates. Spending time with I. Baldon on travel documents.
Dorothy Lloyd
Received billed amounts on-line on a number of contracts and blanket orders for Ruth, in order for her to cancel the lines out to correct account distributions or to close out the contracts.
Continue to process requisitions, invoices and receiving on-line. For more detail see "Cost Schedule Control Systems" report by Esther Cunningham.
Tracked and follow up on various invoice problems.
Reviewed payments processed by Esther during the week of March 13. Payments were entered in contract summary sheets and the LIGO database by both Jim and me.
Monitored contract and blanket order funding levels and notified task managers where supplements needed to be made.
Elizabeth K. Wood
Made further arrangements for the impending NSF site review in May.
These days, I'm working a touch more on the Kipfest. For details of Kip's 60th birthday celebration, please see http://wugrav.wustl.edu/People/CLIFF/KipFest/kipmain.html
Progress Period from 3.10 to 3.23
Accomplishments:
General Comments:
I am interested in holding training session(s) for any users or other
persons who will be interfacing with P3 3.0. This will be an opportunity
to demonstrate the capability of the software and how it is being implemented.
I still need some submittals for the Quarterly Report for the end of February 2000.
We are preparing a schedule for the support that is going to be required for proposals, work plans, and reports for the last half of FY 2000. Clearly there is a lot of information needed, and there is a lot of overlap in the schedules that will have to be spread out given limited resources.
The following change requests have
been submitted:
| CR-990028 | WBS 1.1.3 | Beam Tube Enclosure Closeout | F. Asiri |
| CR-000001 | WBS 1.1.4 | Fencing Road at Livingston (Info Only) | G. Stapfer |
| CR-000002 | WBS 1.4 | Project Office Close Out | K. Duncan |
| CR-000003 | WBS 1.1.4.3 | Erosion Control--Livingston Observatory | G. Stapfer |
Press for the latest Contingency Needs Projection.
From: Kris Duncan <kris@ligo.caltech.edu>
The schedule for the contracting and construction of the Louisiana Staging Building has been completed and agreed to by project management. The schedule calls for issuance of the Invitation for Bids on June 23, a job walk on July 25, and bid opening on August 4. Following this is the NSF's review, with contract award on September 19. This provides for the building to be completed by December 20, 2001.
No report this week.
From: Syd Meshkov <syd@ligo.caltech.edu>
1. Viewgraphs from the Aspen Winter Conference are now available on
the
LIGO Web pages at:
http://www.ligo.caltech.edu/%7Everonica/Aspen2000/webpages/scripts/Transparencies.html
Thanks are due Veronica for her work in assembling and
arranging them, and to Barbara for her help in posting them.
2. Worked on various Visitor Program activities, including a long term
visit to LLO by David Reitze, as well as a long term visit by Benoit
Mours.
3. Worked with Rita Torres to send David Blair useful information, such
as
our NSF proposal for support, to help him with his organizational
activities of the next Amaldi conference in Australia.
Announcements:
--------------
(F. Raab)
Apologies for missing the weekly report last week. This
week we have installation
of phase camera hardware, transfer function measurements
of the fine actuator and
other ongoing commissioning work. Unfortunately
it appears we will not be able to
get useful noise performance from the PSL prior
to ending the one arm test (see
below). Nonetheless, we will run what we have
for a 24-hour stretch on April 3 to
provide some data for checking detector characterization
software. We are getting
some pledges of support for this effort from
within the Lab and the
Collaboration. On the installation front, it
looks like seismic will wrap in
about two weeks. Sounds like time for a party.
Bake Oven:
----------
(K. Ryan)
LHO vacuum bake oven load #82, consisting of 5 Pick Off Telescopes and
Beam Dump
assemblies, was released Monday, 3.20.00. This load was extended
an extra three
days due to the quantity of parts (partially blocked pump port => reduced
pump
speed, greater mass => longer cool down).
Load #83, consisting of the last LHO BSC bellow, 4K IO baffle components,
misc.
Pick Off Telescope and Beam Dump parts, misc. stainless steel hardware
and HAM 6,
HAM 12 and BSC purge air fittings, is underway and should be released
Friday,
3.24.00.
PreStabilized Laser:
--------------------
(R. Savage)
Investigations of PSL optical mount resonances
revealed that the periscopes and
RF photodetectors are the biggest sources of
noise. We are modifying the mounts
for those components to reduce their motions.
Hopefully the upgraded hardware
will be ready for the 2k PSL upgrade in mid-April.
We have been having some difficulty locking the
pre-modecleaner which we think is
due to a faulty AD602 device and a mistake in
how it is wired. Rich Abbott sent
a replacement AD602 and we hope to make the change
later this week.
A high school student from Southridge High School, is now working on
the PSL
documentation. He is just getting started, but already having
a positive impact
(see http://www.ligo-wa.caltech.edu/~rick/PSL)
Optics:
---------------------
(D. Cook)
The Y arm Folding Mirror low signal mystery has
been resolved. This optic has
weathered several reprocessings and installations
early on due to failed magnet
bonds. Apparently the
lower right OSEM was installed with a stowaway inside. A
loose magnet. This
magnet found its way to and attached itself to the optic
magnet blocking most of the sensor light. It
was not attached to the PAM magnet
however. It will be tricky to remove it
from the optic magnet. This will not be
attempted until the mid April in situ work due
to present alignment criteria. The
ITMy-2k optic went through a fine realignment today by adjusting the
PAM screws.
The ITMy-2k and FMy-2k wire violin frequencies will be measured as
we continue
the BSC in situ tasks. Mike Landry and Betsy installed the Y-arm conical
baffle
as part of the related tasks. The ITMy-2k Optical lever was calibrated
using the
new system and re-zeroed as the beam had drifted off the diode. I will
note the
calibration values, alignment numbers, resonances etc. in the e-log.
Seismic Systems:
-----------------------------------
(C. Gray, M. Guenther & H. Radkins)
We've managed to miss a few weeklys with Hugh and Mark at LLO for Coarse
Actuation System (CAS) training from HYTEC and Corey in Montana for
a
presentation. However we have managed to get some work done.
BSC2(4K BS): The Expansion Bellows were leak checked and passed first
time.
This completes the SEI hardware installation in the LVEA. We
still need
to run cable and testing for the CAS though.
BSC10(4K ETMy): Since the last weekly we have completed the external
hardware installation, that is up to the big blue crossbeams; and,
pulled
the dome, completed all internal hardware installations and put the
dome
back on! The expansion bellows have passed the leak check.
Thanks to
Larry Jones and others.
BSC9(4K ETMx): The Scissors Tables are on and three of the four
X-Fine
Stages, we are waiting to install the fourth unit, see below.
X-Fine Stage: This section of the actuation stack provides fine
axial
positioning to accommodate IFO length changes due to Tidal forces (Moon)
and Microseism waves. The positioning is provided by PZTs in
the X-Fine
stage on each of the four piers. The PZT controllers are driven
by an
excitation engine/program during the One Arm Testing of the IFO.
This has
been done.
Meanwhile one of the PZT controllers goes into a resonance oscillation
when
the servo loop is closed. The unit is back at the manufacturer
for
adjustment; we expect it soon.
BSC5(2K ETMx): The installation of the PZTs into the X-Fine Stages
was
completed here this week. The position of the Optics is now being
maintained by the PZTs. During the installation procedure, the
PZTs were
operated at 0.450 Hz with peak amplitude of 90 microns for several
minutes.
The dial indicators on the stages only showed motion of 88µ.
The
difference may be attributable to frame or component distortion.
The
optical levers were monitored and the optic appeared to return to the
before position.
Coarse Actuation System: The CAS operations manual is under
construction--E000140-00-D. This will incorporate the HYTEC operations
manual to cover initial system testing, adjustment, maintenance, and
operation.
Controls:
---------
(D. Barker)
Arbitrary Waveform Generator is working in MX. It was used this week
to
activate the fine actuators on BSC5. Some bugs still remain which are
being worked offline.
CDS software is being reorganized in preparation for putting it under
configuration control using LDAS CVS.
Mode Cleaner Commissioning: The mode cleaner now stays reliably locked for hours! We reduced the modulation depth to 0.002. We now are in the process of re-measuring the mode cleaner transfer function.
Visitors last week measured the UGF of the MC transfer function at 40 kHz (BP on) with lots of phase margin. We can evidently push to 75 kHz or so as is; sharp phase rolloff at ~ 60 kHz appears consistent with acousto propagation delay, which should be measured independently.
Some initial measurements of the mode cleaner characteristics are:
Problems:
Optical levers: We looked into the placement of the optical levers in the LVEA at the ends of the manifolds. There are some dimensional interferences with some of the VE conduit which will have to be reworked. We are scoping out what will be involved and developing a plan for how best to proceed.
Community relations: The University of Texas at Arlington SPS chapter visited this week and added to our collection of murals on the beam tube enclosures. About 45 members of the Instrumenation Society of America visited Tuesday evening for a tour. About 75 members of the Am Soc. of Chem. Engineers toured the LIGO site on Thursday evening.
Other: We had an auto accident this week at LLO involving a visiting
scientist and a "normally open" gate on the access road. Visitors to LLO
are reminded to review the procedures at http://www.ligo-la.caltech.edu/visitor_page/FirstTimeVis.htm
and to inform the security guard of comings and goings after hours.
Harry Overmayer began work at LLO this week as an operations specialist.
no report
no report
| Installation:
Livingston |
Commisioning:
Livingston |
Other Science/Engineering
Activities |
|
power spectra of the length control signal, the two
seismometers, and the seismometer difference (seismometer data converted
to displacement); the dashed line is the integrated rms of the control
signal
|
|
|
phase difference and the coherence between the two
seismometer channels; the phase shows that they are close to being in-phase,
so that the length fluctuations should be smaller than either of the two
seismometers (as the length control signal power spectrum indicates).
|
|
|
phase difference and the coherence between the length
control signal and the seismometer difference (converted to displacement).
The thing to note here is that the coherence around the microseism is high,
and the phase is very close to zero degrees!
|
|
|
200 sec time series stretch of the length control signal,
the seismometer difference signal, and the residual of (difference between)
the two. The amplitudes match up well using only the specified calibration
of the seismometers, and the measured calibration of the length control
signal. This data has been sent through a 0.1-0.4 Hz bandpass filter.
|
In order to get the phase between the length control and seismometer signals to match up, it was necessary to compensate the seismometer channels for the frequency response of these instruments, which is given in the Guralp manual as being two zeros at DC and a complex pole pair at 33mHz. This has the side-effect of increasing the very low frequency drift component of the seismometer signals; this drift will have to be dealt with in implementing the feedforward system.
Some problems:
no report
The review of the preliminary experimental plan for LASTI at last
week's LSC meeting was thorough and illuminating. The committee
(chaired by Peter Saulson) highlighted several logistical issues
(manpower, critical skills, etc.) which, in large part, reflect shared
concerns across the LIGO II enterprise. In this connection, the
committee endorsed our invitation for a strong LSC commitment to LASTI
from outside the Laboratory.
The most important scientific/strategic question was to what degree
we should emphasize achievement of low displacement noise, given the
scaling factors (especially beam diameter) which work against the
short cavity length. We've been tasked with quantifying the potential
impacts of designing for low displacment noise on the agreed primary
mission (functional tests of the seismic isolation and suspension
system first articles with their controls).
In the laboratory, the vacuum system control/interlock panel has been
revised, reinstalled and tested, and assembly of the remaining
annulus pumping and RGA hardware is continuing.
Biplab attended the STAIC meeting at LSU on 20 and 21, and gave a presentation and demonstration of e2e, including the introduction of MSE. The application of e2e to LHO 2K FP data was accepted well, but the criticism came that it is available only on SUN machine, and some people specifically requested to make it available on linux. We intend to support linux, but now, we cannot build alfi functioning even on SUN. Our first priority is to make it work on SUN. Another objection was that documents and e2e website are not well maintained. We need to address it, but for now, too many to do with too little available resources.
Lock Acquisition
Matt remodeled the simulation setup to resemble more closely to the real hardware implementation. Studied more closely the various transient processes, like the velocity dependence of the transition from one state to another, and is improving the locking strategy. Matt summarizes his work in http://www.ligo.caltech.edu/~mevans/log.pdf.
Future plans
We had a meeting to discuss about e2e engine development. The main focuses are:
(1) implementation of the thermal lensing in e2e (Luca will lead this
effort)
(2) thermal noise implementation based on S.Finn's matlab model (Biplab
will lead this effort)
(3) switching to the new field implemention (this has been formulation
by Matt, and HIro will implement it in adlib engine by replacing the existing
optics modules by new modules)
We also discussed the physics modeling activities using e2e. Luca has been working to implement the LSC hardware in e2e framework and will complete it with WFS controller and 3D mirror (to be delivered very soon by Hiro). Once completed, a realistic cavity with LSC and ASC can be simulated. Biplab, Hiro and Rick are interested in working to analyze various PSL noises. They are going to have a telephone conference tomorrow to discuss the direction.
Adlib
Biplab is working to implement a new module to displace the beam. This is necessary to study the effect of the PSL RFDP motion on the frequency noise. It is also necessary to study the effect of the miscentering of the beam on ITM of the 2K FP cavity.
Alfi
Based on the feedbacks to the last release of the preliminary version of alfi, various bugs are fixed and functions are implemented. Next release is expected the end of March, which will have the minimum of alfi3 functionality with multi directory support. The final stable version release is expected to be the end of April.
Work focuse on getting out a version 0.0.10 release of LDAS
this week. This release is primarily meant to incorporate all
the major new features, enhancements, and bug fixes into a
stable release. It is also meant to establish a stable version
of LDAS that will hopefully be used in the upcoming data run at
Hanford during the first week of April.
Peter Shawhan is working with LDAS and GDS to develop a set of
steps that the DMT can use to send trigger data to the LDAS system
for ingestion into the LIGO database. This involves providing an
application programmer's interface (library) which will produce
LIGO_LW tables of triggers for the DMT manager to write out and
then ftp to the LDAS anonymous FTP area. The DMT manager will then
connect to the command socket on the LDAS managerAPI and request
that this LIGO_LW data be ingested through the underlying LDAS APIs.
The LDAS system is expected to be in pretty good shape for this
Hanford run. We will be working feverishly up until the last moment
to perform all the system tests needed to tag a new release and
then install the system here and at the sites.
Work on the new FrameCPP and MPI based LDAS API is continuing but
at a slower pace as we are busy preparing the release. UWM will be
looking at the wrapperAPI with an eye towards its flexibility to
support hierarchical searches. Kent reworked some of the wrapperAPI
to more easily support distributed algorithms needed for large data
set FFT and such. This will also facilitate integrating less main-
stream gravitational wave search strategies.
Data Analysis:
Lazzarini: We have recevied a very nice note from
TAMA confirming that they wish to work together
to analyze the coincident datasets from Sept
1999.
We will be putting together a plan on how to
proceed.
From previous week: 40m/TAMA coincidence data analysis (Zucker)
-------------------------------------------
Found the biggest time sink in the "classical" matched
filtering routine was the canned peak finding algorithm. If
only the largest 1 or 2 peaks per second are
reported, a bank of 5 filters runs at ~ real time
(16 kS/s) on a 333 MHz PowerBook G3 (all
in interpreted Matlab).
Ed Daw is building us a more efficient peak sorter.
LHO one arm data transient analysis (Julien Sylvestre)
----------------------------------------------------------------------------
JS implemented a transients identification pipeline for the one arm
LHO data
(spectrogram, bursts id, coincidence between channels, time series
extraction).
Explicit coincidences were exhibited for bursts in the control signal
and the
seismometers. Various scripts for improved automatization were written
and
tested.
Livingston:
Worked on the LSC conference. From the experience we are working on
some new
procedures that may facilitate computer connectivity for visitors in
the future.
A number of people did mention they liked the use of the projector
with their
computers for presentations.
Hanford:
Nothing to report.
CIT:
Barbara did a number of WEB changes and helped with some of the DCC
issues. The
responces to the WEB video stream of the Inauguration have been positive.
Barbara is investigating other uses of this capability.
Suresh installed GNU compilers (gcc, g++, g77) version 2.95.2 in sirius.
Made a compressed tar ball of one of the surf student's home directory
and is
sub-directories after retreiving from backup tape.
Did more tests with PGP evaluation version 6.5.2. both on unix and
windows
platforms. This is something very useful tool to send documents securely
across
the Internet by encrypting and signing it.
Worked with Larry to put one color printer in second floor bridge.
Setup one new user account, removed one modified some. Helped users
with PC,
email, printing and file access problems.
Larry is continuing his work with purchasing issues. So far going through
Caltech Wired has not been a smooth process. They have promised to
remedy a
number of the problems.
Installed/repaired and configured a number of PC's.
Worked on the hardware installation for the Primavera software.
Helped a number of users with their computer problems via telephone.
Most of the
users were on travel.
Made some minor modifications on the mail server to expand its capacity.
Updated
a few addresses on the DNS server.
Working with DCC concerning PDF issues. The PDFPlanet web site has
been a great
source of information. It appears to help in a number of areas the
Adobe web
site doesn't cover. It has a number of free utilities. Those that do
a lot of
publishing should check it out.
Working on the new room to be used for the PC servers.
LDAS@CIT:
Adding LIGO Science Collaboration users to kitalpha.
Located fore mib files for proper snmp monitoring of our networking
hardware.
Additionally, I've been able to locate the information we would be
interested in
monitoring.
Writing a script to generate from snmp a table of mappings of network
switch
ports to hosts which will make future reconfigurations easier.
Installed new network drives and tried other changes which did increase
network
performance to about 60Mb/s for a 3c905C card, which while a dramatic
improvement, is still below what we should be getting.
Creating standardized software image to installed on all the redhat
linux
machines.
Testing UPS software.
From: Sam Richman <srichman@ligo.mit.edu>
Stiff isolation system (Richman, Rollins, Chatterji)
Transfer function measurements were made to identify the various resonances
associated with the body modes of the two-stage system. Geophone
signals
were blended with position sensor signals at around 0.3 Hz in the upper
stage vertical loops. The aluminum targets used for the (inductive)
relative position sensors were found to reduce the range of the sensor
to
below 1 mm, compared to the manufacturer's spec for steel targets of
2
mm. Though this likely poses no difficulty to the operation of
the system,
we are making up a set of steel targets to evaluate.
For additional information about this report, contact sanders@ligo.caltech.edu
