The LIGO Executive Committee Agenda for Monday May 10, 2004 will be:
(Meeting time: 10:30 am Pacific Time)
Special Items:
no report
Status of LSC/MOU Research Updates and Program Reports (Petrac)
LIGO Weekly Site Telecon (Jasnow)
There was a site teleconference Thursday, May 6, 2004. The following issues were among those discussed:
The list of current actions revised to reflect the status of open actions assigned through the last update (March 4, 2004) may be found at ACTION LIST.
PROPERTY MANAGEMENT (Chargois)
From: Ed Chargois <chargois_e@ligo.caltech.edu>
DOCUMENT CONTROL CENTER (Turner, Mak)
>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
> From: Cleveland Mak <mak_c@ligo.caltech.edu>
ACTIVITY
|
05/06/04 |
Packages |
Faxes |
|
In |
15 |
33 |
|
Out |
9 |
19 |
Press here to access the DOCUMENT CONTROL CENTER WEB PAGE.
COST SCHEDULE CONTROL SYSTEMS (Cunningham, Brambila, Kaufman, Salone)
From: Esther Cunningham <esther@ligo.caltech.edu>
Press here for ACCOUNTS PAYABLE HISTORY DATA.
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.
SUBCONTRACTS MANAGEMENT (Petrac, Jasnow)
From: irena@ligo.caltech.edu (Irena Petrac)
From: Ed Jasnow <jasnow@ligo.caltech.edu>
SUPPORT (Baldon, Lloyd, Tischler)
>Irene Baldon
>Dorothy Lloyd
ADVANCED LIGO (Cost Schedule Control Systems) T. Frey
From: Thomas Frey <tfrey@ligo.caltech.edu>
Progress Period from 04.30 to 05.06
For list of documents that are being used to develop Adv. LIGO Cost and Schedule, see http://www.ligo.caltech.edu/~tfrey/Cost_MTG_082002/
Prepared an Advanced LIGO milestone table, that compares the evolution of the key milestone dates. This was requested by Carol W. for discussion with Stan W.
Accomplishments:
· The following is a summary of status by sub system:
§ COC - http://ligo.caltech.edu/~tfrey/COC_AdvLIGO/COC_index.html
§ Still need completed WBS dictionary and BOE.
§ PSL - http://ligo.caltech.edu/~tfrey/PSL_AdvLIGO/PSL_index.html
§ Executed telecom for review of PSL cost / schedule data. Comments / formal acceptance pending.
§ http://ligo.caltech.edu/~tfrey/PSL_AdvLIGO/CB_rev_041304/
§ AOS - http://ligo.caltech.edu/~tfrey/AOS_AdvLIGO/
§ Working on revisions to the baseline schedule and WBS dictionary.
§ Executed telecom to discuss work in progress.
§ IO - http://ligo.caltech.edu/~tfrey/IO_AdvLIGO/IO_index.html
§ Still need completed WBS dictionary and BOE.
§ Executed telecom to discuss work in progress.
§ Posted revised progress data as a result of the telecom
§ SUS - http://ligo.caltech.edu/~tfrey/SUS_AdvLIGO/SUS_index.html
§ Meeting pending to discuss the link to the BSC task list and schedule tasks.
§ SEI - http://ligo.caltech.edu/~tfrey/SEI_AdvLIGO/SEI_index.html
§ ISC - Comments / Data pending from Dennis C. and Peter F.
§ LDAS - No action required at this point in time.
§ INSTALL - No action items pending.
§ DAQ - No action required at this point in time.
§ PM - No action required at this point in time.
§ FAC - No action required at this point in time.
§ SUP - No action required at this point in time.
§ LASTI - http://www.ligo.caltech.edu/~tfrey/LASTI/lasti_index.html
§ 40-Meter - http://www.ligo.caltech.edu/~tfrey/40m/40m_index.html
§ TNI - http://www.ligo.caltech.edu/~tfrey/TNI/TNI_index.html
· ROSTER DATABASE:
§ Continued input of changes / corrections regarding supervisors and departments.
§ Finished review data management tasks required during Irena's leave of absence.
§ Sent out email to determine what bounces we are still getting. Received assistance from Benno Wilke, Peter Saulson, and Albert L.
· COST BOOK DATABASE:
§ Reconciling cost account listing from cost book and schedule loading.
§ Continue to work with Carol and Florence starting work setting up "crosswalk" between accounting and progress reporting.
Development of the Advanced LIGO Project Controls Guidebook continues.
Project Web Site for posting schedule and progress related data continues to be updated with the latest and greatest.
· See http://www.ligo.caltech.edu/~tfrey/index.html
Reports (Lindquist)
Change Control/Contingency (Lindquist)
Human Resources (Akutagawa)
From: Cindy Akutagawa <cindy@ligo.caltech.edu>
>From: Bill Tyler <tyler@ligo.caltech.edu>
Summary of Commissioning Activities at
LIGO Hanford Observatory (compiled by M. Landry)
4K IFO
Initial work on the ouput
mode cleaner (OMC) was summarized, including ratios of transmitted to input
sideband light. The upshot appears to be that the OMC improves the
sideband power content of the beam.
The source of 164kHz spikes on the PSL has been identified; a switching power supply in the NPRO itself. The spurious peaks are seen in FSS, PMC and ISS control signals.
The thermal compensation system (TCS) had trouble compensating when 4W were incident on the MC. A correction was issued to an earlier elog regarding annulus heating.
The OMC went under vacuum, and was next locked. An intensity noise study was performed. Some mods were required to maintain a reasonable vacuum and control the unit. All mirrors are required for even modest finesse. Further measurements, including new measurements of the finesse and OMC noise coupling, have been performed
PSL power trends led to the realization that a chilled water pump failed to switch on during an automated monthly transfer, causing optics to go on walkabout.
High and away: the CO2 laser spot narrowly misses clipping the input port.
The intensity noise contribution to AS_Q was measured.
A first test of the new FSS card was made: running with a unity gain of 1MHz, the phase margin was nearly 30 degrees and the gain at 100kHz was 28dB. More testing is planned, but the card is out right now for minor mods.
DAC noise measurements suggest the unit miss the mark of 150nV/rtHz by nearly an order of magnitude.
2K IFO
Digital 2k IOO WFS were put in place and commissioned.
Commissioning overview (Zucker)
---------------------------------------------------------------------
Main thrust remains HEPI installation and commissioning. Actuator installation
continues in the corner station with two HAM chambers nearly complete; the
piping contractor is maintaining good progress.
Commissioning at the X end is back on track after resolving the puzzle of the
"bad" actuator. After "testing" our complex procedure for
draining, removing, replacing and bleeding the actuator, an examination
on the bench revealed a trivial cause for all the trouble. An assembly shim had
accidentally been left in, mechanically short-circuiting the piston. This shim
was unfortunately invisible in the installed position. The assembly and
inspection procedures have been modified to insure this can't happen again. The
removed actuator, now fixed, can be returned to service on another chamber.
Brian Lantz is out from Stanford this week helping with system identification.
Maybe closing some loops, too?
#MZ note: YES! see here
http://www.ligo-la.caltech.edu/ilog/pub/ilog.cgi?group=detector&date_to_view=05/06/2004&anchor_to_scroll_to=2004:05:06:
23:17:44-blantz
Community education and outreach (Bonnie Wooley)
---------------------------------------------------------------------
Lots of Outreach this week. We had 3 groups visit LLO for a tour; Baton
Rouge Community College, Point Coupee High School and an Optics class from
LSU. In addition, we visited Our Lady of Mercy and did a hands on science
class with the middle school science club.
Safety and security (Rich Riesen)
---------------------------------------------------------------------
no report
L1 Commissioning (Grettarson)
--------------------------------------------------------------------
With the help of Erika D'Ambrosio, the LLO team has reached several conclusions
regarding the properties of the recycling cavity by reconciling the FFT model
with measured data.
1. There is an optically induced length offset that stems from the poor
mode-matching into the cold recycling cavity.
2. When the recycling cavity is locked, either on it's own or with the
full interferometer, a significant loop offset is required to obtain the
maximum sideband power gain in the cavity. Modeling progresses on the
full interferometer but at least for the PRM alone, the model agrees well with
the observations. In particular, the loop offset required to obtain
maximum power gain is well predicted by the model.
3. The beam profiles prediced by the FFT model agree well with the
observed profiles for different offsets.
LLO Seismic retrofit (Rich Abbott)
---------------------------------------------------------------------
(see above; both Rich and Oddvar are away so no details this week)
HPLF and L1 Commissioning (Amin)
---------------------------------------------------------------------
HPLF:
LLO has took shipment of the 100 W laser on Tuesday. Prior to activation, a few
technical details were asked of the manufacturer such as beam quality, fiber
back reflection tolerances, and automated internal safety features. Ken Franzen
and I under the remote supervision of Rai Weiss activated the laser at
approximately 1440 CDT and measured a total output power of 106 W. However, we
found that this power level deteriorated over 15 minutes to 98 W. We will
be returning to the lab for more burn-in tests.
2k Faraday Isolator:
The new 2k FI has been assembled at UF. An isolation ratio of 37 dB was
observed. UF noted that this level of isolation was achieved without
adequate alignment. The parts are being shipped for bakeout at LHO within
the next few weeks. There were a few technical questions that needed to be
answered regarding the effects of heating the Faraday rotator. These have been
resolved. The FI should be vacuum ready by the end of May.
PSL:
Following last week's rushed attempt at making a current shunt measurement, I
have setup equipment to conduct a second round of shunt to optical output
measurements. This second round of measurements will take into
consideration input from both Rana A. and Mike Zucker. A write-up and pointer
will follow in the e-log.
Also, improvements to the PSL have been slow due to my new obsession (the 100 W
laser). The EOMs still need to be cleaned, and the NPRO's FSS control loop
requires investigation as noted in an e-log entry on Tuesday.
Burst analysis and HPLF (Franzen)
---------------------------------------------------------------------
1) Prepared data and plots for the Burst f2f meeting as requested by Sergey
Klimenko. Goto
http://www.ligo-la.caltech.edu/~franzen/restricted/WBveto6.html
http://www.ligo-la.caltech.edu/~franzen/restricted/distributions.html
http://www.ligo-la.caltech.edu/~franzen/restricted/downloads.html
for more information.
2) Performed installation and initial tests of the new IPG 100 W laser together
with Rupal Amin
General Computing (Roddy)
---------------------------------------------------------------------
* Current bandwidth usage can be seen at
http://teche.ligo-la.caltech.edu/mrtg/LLO-Router/130.39.245.1_1.html
* Archived bandwidth usage can be seen at
http://teche.ligo-la.caltech.edu/mrtg/archive/
under the dated folder
for the week of interest.
* Working with LSU to determine why the connection has been flaky the last two
days. It is back to its habit of dropping the connection for 5-10
minutes.
* Spent a considerable amount of time installing new switches in the staging building. Finally, we have as many switch ports as patch panel ports. Still waiting on some fibers for the final configuration. Replaced all of the patch cables with one footers to reduce the clutter and get it to the point where you can actually see the switches. We also now have copper GigE ports available in the new building. Several cables had to be traced & repaired since a couple of conductors were not connected. It worked fine for 100 mbit, but would not for 1000 mbit. I also had to move several patch panels in the rack. This was pretty difficult to do without accidentally yanking the cables loose. This was so that the switches could be relocated closer to the patch panel itself.
* Spent a fair amount of time rounding up parts, documentation, tools, etc. from the server move into the computer users room. I had accumulated a lot of bits and pieces in there during the rack installation and server moves. Still have some to round up and organize.
* Working a couple of DHCP issues from the client side.
* Spent way too much time going through my messages from the last few months
that were marked as spam. Found about 2 dozen messages that were in the
spam folder that were not spam. Gotta find a better way... hopefully the
work that Lisa has been doing will help with this.
Data Analysis (Yakushin)
---------------------------------------------------------------------
CDS Admin (Chethan Parameswariah)
---------------------------------------------------------------------
Working on the HEPI Watchdog. I have the first cut of the watchdog all done
using database records similar to the SUS Watchdog. Tried this on ETMY. One
small link that turns of the HEPI drive still left to do. Will propagate this
soon after I am comfortable with one optic. Showed this to Joe Giaime who has
recommended high pass filtering for the input channels. Have to incorporate it
using State Notation code. To get the right coefficients I have to nail down
the correct sampling rate of the epics channels.
DAQ Controller has been running for 7 days now without a crash after Ash Khan
replaced the pentium.
CDS support (Ash Khan)
---------------------------------------------------------------------
1) Analyzing the state code of the Slow PID loop of the FSS servo. The error
was reported by Rupal that when Ref cavity looses lock the FSS goes into
oscillation.
2) Integrating the different medm screens for commisioning of the MC WFS.
see also the CDS weekly meeting minutes in the commissioning archives:
Rolf Bork reporting
We have the new 2.2GHz Pentium VME processors in, but do not
yet have all the necessary vxWorks libraries to build our code for Pentium 4
units (Wind River wants us to pay for a new developers license $$$$). So, in
the meantime, I opted to port our suspension controller software to Linux to do
some performance testing and to see if our code loaded into the Linux kernel
could handle all the
VME and RFM I/O. I have the code for controlling the RM/BS
mirrors running now, with a total CPU time of 31usec/cycle. This code is doing
everything that the vxWorks code does at the sites now, including DAQ and GDS,
and runs in about 1/2 the time of the vxWorks code on the Pentium 3 processors.
Most of the time it took to port to Linux was involved with the VME accesses. I
put together a generic library for the VME I/O, which will now make it easy to
port the other CDS software. The only plan, at the moment, to use Linux on
these processors is for the new LSC code for the 40m lab. I'm hoping to have
that infrastructure ready by the end of next week.
Alex was busy at LHO for the past two weeks, so there is a
lot of new code to be passed on to LLO at some point. This includes:
- Updated Framebuilder code
- Updated IOO WFS software.
- ADCU code which writes GDS signal outputs to ICS115
DAC modules.
- New LSC and ASC code to support spring compensation
and active matrices.
Jay Heefner reporting
Fiber Optic Timing Link (Sander)
=========================
- The pcbs for the new design are due next week.
- All components are in-house.
Timing System Redesign (Flavio)
==========================
- Flavio is working on a draft requirements document.
Anti-Image Filter (Mohana)
===========================
- Design is on-hold pending redefinition of requirements
based on in-situ tests at LHO.
40 Meter (Jay, Ben)
============================
- LSC drawings are complete and out for review. The
add/remove list for the upgrade to signal recycling will be done by next week.
- Working on getting PSL and ISS signals into DAQ.
- It was found that the new, cheaper pico motor driver
knocks the MC out of lock when actuated.
- Osamu would like to limit the 33MHz response and increase
gain of double demod PD.
HEPI (Ben)
===========================
- 40 pier interface modules due back from PCB Pro.
- 6 pier interface and 6 valve drivers ready for shipment to
LLO.
LSC PD Redesign (Ben)
============================
- Waiting to hear from Vern.
ISS (Flavio)
=============================
- The bandwidth of the PD has been increased to >10MHz.
- Flavio will be at MIT next week to work with Rana.
EMI Upgrade (Jay)
=============================
- Mohana has LOS and SOS drawings for LVEA complete. She is
now assigning designators to the feedthroughs and cables.
AdLIGO SEI (Jay)
==============================
- A low noise voice coil actuator has been shipped to
Stanford for test.
AdLIGO SUS (Jay)
==============================
- Assembling parts and drawings for MC test at LASTI.
- Paul will build a eurocard crate for shipment to LASTI.
TNI (Jay)
===============================
- Building new EPICS controlled Arm and MC servos.
Elect Shop (Todd)
===============================
- ISS PDs in final assembly and test.
- LSC AA filter front panels are due this week. Modukle
complete waiting for filters (~2 weeks).
PeterKing
This week I was helping Flavio characterise the intensity stabilization
photodetector in terms of dark noise and bandwidth. A minor modification was
made to one unit that enhanced the bandwidth whilst maintaining similar noise
performance to the original unit.
PeterKing
A spare set of o-rings for the vacuum chamber was shipped
out.
Lee Cardenas, Liyuan Zhang
OTF Lab. (W. Bridge)
The (21) pieces of the new twisted, shielded, teflon cables are under
test.
We are taking ring down and beat frequency measurements
as well as the RGA of the chamber every day. NO CHANGE
The test has completed (3) months of measurement.
These cables are clean!
Absorption Test Measurement prototype in progress
The 8T sapphire slab from CSI of pentagon shape is under test at different
depths; Z=-5.5, -10.5, -19 mm. test is in progress.
The (3) sapphire substrates 3" Dia x 1.0" Thick to be tested is
in STANDBY for later.
We still have a total of four samples to be measured:
2.) three 3" sapphire substrates, and
3.) the 15 cm dia. substrate, which is on cleaning process.
The fabrication of the rods for the enclosure is in PROGRESS!
Scatterometer system in standby
OTF Lab at Lauritsen ROOM 38 NO CHANGE.
Cavity #3
The cavity is locked and we are taking ring down and beat frequency
measurements every day as well as the RGA for the chamber.
Cavity #2 Test cavity optical set up in standby for further samples.
PSL LAB.
The 10 watt ND:YAG laser is undergoing for a complete and new alignment
which is in Standby.
Since finishing our sapphire measurement, we have been working on a number
of things both to analyze our existing data and prepare for the next stage of
the TNI program.
While finishing our coating thermal noise paper, we re-examined out previous
data (using fused-silica test masses) using a different coating-thermal-noise
formula. This formula assumes an isotropic loss angle and no difference between
the mechanical properties (Young's modulus and Poisson's ratio) between the
substrate and coating. If we use this formula to fit our data, with the
(isotropic) loss angle as the sole undetermined parameter, we find a coating
loss of (2.7+\-0.3)e-4, which agrees well with the latest, most carefully done
ring-down results. If we use our previous, anisotropic formula and insert the
ring-down result of (2.7+\-0.7)e-4 for phi_parallel, then we find
phi_perpendicular = (0.1+\-1.8)e-4. The rather large error bars are mainly due
to propagation of the error bars in phi_parallel. This result says,
essentially, that phi_perpendicular is either less than or equal to
phi_parallel. More importantly, it also says that the ring-down measurements
give a phi_parallel that can be used to correctly predict the broadband thermal
noise in a mirror. This provides a direct confirmation of the extensive effort
to understand and predict thermal noise in mirrors.
With the sapphire set-up, we have been investigating some noise bumps and more
accurately modeling the shot noise in the interferometer. An earlier, rough
estimate put the theoretical shot noise below the observed noise floor at high
frequencies, and we had hoped that we might be able to reduce the
high-frequency noise and uncover more of the sapphire noise spectrum. We now
find that with a detailed calculation, the theory agrees fairly closely with
the observed noise floor. Our noise floor thus appears to be limited by
fundamental noise sources (thermal and shot noise) at all frequencies between
600 Hz and 100 kHz with both Sapphire and fused-silica mirrors.
We have also begun working on automating lock acquisition in the
interferometer, to investigate lock performance and non-Gaussian noise in the
instrument.
no report
Simulation and Modeling
(Bhawal)
Weekly Physics Meeting
---------------------------
Sany Yoshida from SLU and Matt, Hiro, Monica, Biplab discussed about ways to
measure the coupling of seismic motion to angular coupling at suspension point
through stacks. We also discussed Monica's plan during her stay at Caltech and
also issues related to FUNC_X module and Adaptive FFT algorithm.
Virgo visitor from Orsay
------------------------
We have Monica Varvella from Orsay visiting here Caltech for one month. Alan
Weinstein is her host, and she is going to work on the dual recycling cavity
formulation and on the 40m / adv.LIGO modeling. She has started looking into
the matlab and mathematica code of the dual recycling cavity by Hiro and
comparing with her calculation. She also got Han2k package from Biplab to learn
the idea of the e2e programming of a full scale interferometer.
Seismic Noise at LLO
-------------------------
Sany Yoshida and his students from SLU will start studying the coupling of
seismic motion to suspension point angular degrees of freedom through the
stacks and provide estimates to Biplab and Virginio to study lock losses in
LLO.
LHO phase-camera set-up
-----------------------------
(Biplab) Finished Matlab simulation file (using adaptive FFT method) for the
phase-camera set-up with parameters supplied by Joe Betzwieser. Confirmed that
the simulation agrees with the actual set-up: the pick-off telescope reduces
the beam-size by 1/8th and the final beam-diameter at the camera (after the
beam passes through telescope and lenses on the table) is about 8 mm.
Adaptive FFT algorithm
---------------------------
(Biplab) The method seems to work (at least in our current implementation) only
for monotonically expanding or contracting beam. If the beam crosses the waist,
the method produces erroneous results. Exact reason and way to solve this are
being looked into but, for the time-being, the problem can be bypassed by
dividing the propagation length into two parts.
LinLIGO
------------------
(Matt) Continued work on LinLIGO cleanup and documentation.
Code development and maintenance
----------------------------------------
(Hiro) It was found that the shared library adapted in the simulation engine
does extra initialization of certain class objects. Hiro and Melody are looking
into the cause of this initialization. This indicates a possibility of some
unexpected initialization of classes, and full understanding is needed.
(Biplab) Modified and reposted "Han2k_MM" package to the 'Download'
section of e2e's homepage to comply it with some changes in e2e code.
(Melody) Finished first draft of the technical documentation for FUNC_X. Worked
on a small fix for the FUNC_X code.
Alfi
----------
ALFI Problem Reports reviewed:
Bruce, Melody and Hiro went through the Problem Reports' list to
re-prioritize remaining items. Bruce will focus on the implementation of
bundler and a support to make boxes behave like primitives. Melody works on a
few items on the GUI side to make it easier to use ALFI, in addition to
supporting Hiro in the simulation engine.
(Bruce)
- Fixed exception occurring when
multiple junctions
are auto-added to a
connection.
- Fixed data-typing problem when a
connection network
(via junctions) contains
both unknown and another
data type at various
inputs and outputs to the connection.
- Revised all Alfi PRs to update PR
status and priorities.
- Working on copy/paste port PR
(387).
- Working on "%" character
inclusion problems for parser(PR
419).
LIGO Data Analysis System
Software Systems (Blackburn)
The proposal for the gds_trigger table changes were aired at this week's DASWG
meeting. The changes involve several Database Administration (DBA) tasks which
we do not have experience with and will need to test. A report will be composed
by the LDAS group to the DASWG group after these experiments have been
performed outlining the impact of the proposed changes and a recommendation
will be made as to whether or not trying to preserve existing data in the new
table designs is worth the effort. As of this writing several technical issues
have been discovered that make preserving the data both challenging and risky.
Using a Sun Solaris toolset based on a libumem memory management library, we
attempted to locate the memory leak in the frameAPI. This tool did not show any
memory leaks with the weekend run. There is more for me to learn about this
tool and others. Have been reviewing code to see if there is any obvious
programming errors. This too has not yielded any results.
Updated several sinstall rules for packages used under the /LDCG tree.
Worked on PR #2451 - when multiple wrapper masters are permitted on internal
nodes, computation resources can be allocated on the wrapper master. Have
identified the source of the problem, still working on a solution that does not
affect other configurations or cause unnecessary job failure.
Began exploring coding solutions for the diskcacheAPI problem report number
2416 and experimented with replicating the problem report 2455 using tandem-v.
Began compiling /LDCG tools under Linus with the Intel C/C++ compiler (version
8.0) on ldasbox1 as a first step towards migration of LDAS over to a linux
platform based on this compiler.
All integration and system tests were rerun and updated on the web this week.
No unexpected results.
Did a comparison of two LDAS tandem system, one using DB2 version 8.1 and the
other using DB2 7.2 to test if any of our new "small" memory leak in
the metadataAPI could possibly be attributed to the developer's toolkit that we
use from IBM. Indications suggest that there may be a small memory leak from
the new toolkit. This memory leak is extremely small and not considered a
concern, but it wasn't visible to the group prior to the changes in support of
the new database so we wanted to test this possibility.
Modified the link checking script to be more efficient and to use more of
curl's capabilities.
Grid R&D --- GriPhyN/iVDGL/ITR2003
TclGlobus/SWIGlobus Activities:
Added throwing of exceptions for many of the calls in place of returning error
status. This allows for simpler programming at the TCL layer since a programmer
can have several statements in sequence without having to verify the return
status of each call. The implementation is scripting language neutral and
allows for other scripting languages to easily add this coding model to their
scripting language (provided their scripting language supports exception
handling).
Started to use doxygen to document the interface. Currently only have a single
function called so I can experiment with various options to doxygen.
Prepared presentation on TclGlobus for ITR2003 review committee. The review
will be next Monday at Argonne National Laboratory. The presentation has been
circulated to all the ITR2003 PIs for feedback.
Hardware Systems (Anderson)
Caltech
-------
(Dan Kozak)
* Called in SAM-QFS 2Gb log file limit to Sun.
* Continued migration of non-run HPSS files to SAM-QFS.
* Threw out LIGO Redwood tapes (with Ed Chargois' permission).
* Gave back CACR laptop and old LIGO laptop.
* Worked on getting 2 T3s checked out and ready for shipping to LHO/LLO.
(Al Wilson)
* upgraded ldas-dbcentral to RH9. Isaac is installing db2.
* Replaced hard drive in bosco.
* Working on test condor installation. Hit a snag with yp server.
* Replaced disk drives in datacahe units 6,8 During the replacement of the disk
in 6 a second drive failed. Dan had to restore the files for the damaged raid.
(Stuart Anderson)
* Learning how to publish new data into LDR.
* Upgraded security patches on a number of Linux and Solaris machines.
* Upgraded webcvs to allow additional web based functionality when
browsing CVS software repositories.
* Created initial CVS repositories for DASWG activities.
* Ran validations tests on 2 T3 units at Caltech prior to shipment
to LHO and LLO for use as new DMT trend frame filesystems.
MIT
---
(Keith Bayer)
* Cross mounting drives on cluster in support of holding S3 data
may require reboot as I'm having trouble running rpc.mountd
remotely from script - not sure why...
* Patched 280R X graphics code.
* Continuing to help LDR with S2 Level 1 RDS data.
Hanford
-------
(Greg Mendell)
* I am working with Ben Johnson to get condor jobs running on the cluster
at LHO. Myself, and a few other users, will run jobs for a week
to test
the system before opening it up the LSC.
(Ben Johnson)
* Installing LDR on ldas-gridmon.ldas-wa. I'm presently in the "waiting
for certificates" stage. I should have them on May 6 2004.
* node68 has a failed hard disk. The failure occurred while spraying S3
L3 LHO data across the cluster. I have a Maxtor RMA number, so the
disk
will be sent out May 6 or 7 2004.
* Working with Greg Mendell on getting the Cluster ready for users.
* Repaired two "damaged" files in /samrds/S2/L3/LHO data. I simply
unmarked the "damaged" flag, staged, and FrChecked the files.
Both files passed.
Data Analysis Activities (Lazzarini)
Mendell:
1) I worked with the PULG group and the reviewers to vet the S2 time-domain
analysis results that were presented at the Denver APS
meeting on May 4 2004.
2) Software that injects CW signals into SFTs in memory has been added to the
LAL inject package. I am using that code to write code that will do the
StackSlide Monte Carlo studies.
Shawhan:
* Completed internal review of the known-pulsar preliminary result to approve
it for the APS Meeting.
* Attended the APS Meeting in Denver and gave a talk on the S2 binary neutron
star inspiral preliminary result in the
"Results of Observations from the LIGO Scientific Collaboration" session.
Sutton:
MDC verification: I examined the matlab scripts used to generate the new
MDC frames for simulations in the S2 bursts analysis, and checked the
strain data in one sample frame. I distributed a preliminary report to
the group (T040082). I found small errors (10^-3) due to the use of a
spherical Earth model, and more serious errors in the treatment of TAMA which
invalidate the data for that detector. The serious errors have now been
fixed.
APS: I presented a talk on the S2 bursts analysis at the APS meeting in
Denver. It was well-received. I got an interesting question: how
would a limit on the GRB strength/rate from the un-triggered search (with 500x
GRBs due to beaming) compare to the triggered limit?
Lazzarini:
Spent most of week investigating the source of apparent bias in the stochastic
background estimation of injected signals. The effect was eventually isolated
to the way the estimate is normalized and may be intrinsic to the general
parameter estimation problem that involves measured quantities in non-linear
ways. In out case reciprocals of measured estimates of power spectra are
involved: gamma(f)^2/(f^6 P1(f) P2(f) . The fundamental point is that if P = P0
+ dP, where <dP> = 0 and <dP^2> = sigmaP^2, then <1/P> =
1/P0( 1 + (sigmaP/P0)^2 + ...) > 1/P0.
General Computing (Wallace)
MIT:
(Keith)
-Received UPS boxes for various servers
-Installing Solaris9 on old machines for incoming urops
-Testing compression to AIT3 tape drive
-Updated sun box printer configuration files
-Configured video camera from Caltech
-Made list of deactivation equipment for Property Office
Livingston:
(Shannon)
-Current bandwidth usage can be seen at
http://teche.ligo-la.caltech.edu/mrtg/LLO-Router/130.39.245.1_1.html
-Archived bandwidth usage can be seen at
http://teche.ligo-la.caltech.edu/mrtg/archive/
under the dated folder
for the week of interest.
-Working with LSU to determine why the connection has been flaky the last two
days. It is back to its habit of dropping the connection for 5-10
minutes.
-Spent a considerable amount of time installing new switches in the staging
building. Finally, we have as many switch ports as patch panel
ports. Still waiting on some fibers for the final configuration. Replaced
all of the patch cables with one footers to reduce the clutter and get it to
the point where you can actually see the switches. We also now have
copper GigE ports available in the new building. Several cables had to be
traced & repaired since a couple of conductors were not connected. It
worked fine for 100 mbit, but would not for 1000 mbit. I also had to move
several patch panels in the rack. This was pretty difficult to do without
accidentally yanking the cables loose. This was so that the switches could be
relocated closer to the patch panel itself.
-Spent a fair amount of time rounding up parts, documentation, tools, etc. from
the server move into the computer users room. I had accumulated a lot of
bits and pieces in there during the rack installation and server moves.
Still have some to round up and organize.
-Working a couple of DHCP issues from the client side.
-Spent way too much time going through my messages from the last few months
that were marked as spam. Found about 2 dozen messages that were in the
spam folder that were not spam. Gotta find a better way... hopefully the
work that Lisa has been doing will help with this.
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
- Lots of user support this week; printer problems, Windows problems, virus
problems, Matlab problems, and help with some CDS user problems as Dave is on
vacation.
-Work is progressing on the Ligo/PNNL network conversion to GigE. I've
purchased an additional GigE port adapter and GBIC connector for our
router. Lockheed Martin is connecting a second fiber pair between Ligo
and PNNL. When this is completed I'll have the information I need to
purchase the media converters and we should be good to start testing the GigE
network.
- Purchased some Dell servers for Daniel. Followed up with Ruth on an order
for some Sun computers that should have shipped last month but didn't.
- Spent some time working on CDS software.
CIT:
(Mike)
-This week I spent most of the time reloading pc workstations. This was caused
by virus, OS corruption, and upgrading purposes.
-I am loading a refurbished laptop for a user that is having monitor issues
with his current laptop.
-Ran monthly backups on all NTSRV's.
-Installed software and some additional peripherals for a few users.
-Troubleshooting some software issues for a few users. While I was there I
updated these workstations with current OS & office patches.
-Setup a network connection down in OTF for one of our users.
-Additional misc. user support.
(Lisa)
- Did monthly backups
- Began working on a new application server
- User support for new visitors
- Investigated some strange network traffic with saiph at the request of
ITS
Security. Everything was fine.
Mail Stats 4/29 - 5/5
Messages Accepted:
Spam Rejected:
Viruses Rejected:
False Positives:
Total Mail Thru:
(Bruce Sears)
-Alfi 5 Software Development:
- Upgrading Ilog interface to give
convenient entry listings.
(Larry)
-Worked a couple of procurement issues for different groups.
-Continued working on setting up new accounts for visitors and SURF students.
-Rebuilt one of the E2E sandbox servers. The disk drive with the OS just became
corrupt. Also, ordered a new drive just-in-case it turns out to be a hardware
problem.
-Still working on the security documentation. Thanks to all of those that have
replied to the request for information. Everyone replied quickly with good
information.
-Spent a number of hours working on a new printer installation for Millikan. It
is working but there are still a number of modifications needed to get it to
replace the b/w printer on the floor. Also, spent time working and cleaning out
the old color printer. It still needs a lot of work.
-Still running cables in various locations. Mostly, the computer room.
-Performed regular maintenance on a number of the servers as well as a repair
on one of the home drives.
-Addressed a couple of virus/suspected hack issues. Nothing major. Along the
same line spent time working with Mike on trying to repair a computer in-which
the Microsoft patches actually corrupted the system. After a number of hours of
slow progress the computer was just rebuilt.
-Still assisting Lisa on the spam filtering. However, the amount of time I have
spent working on this has diminished.
From: Carol Wilkinson <wilkinson@apex.ligo-wa.caltech.edu>
Advanced LIGO
project management reached a major milestone this week with the revision and
progress updates through April 2, 2004 of SEI, SUS, PSL, CO, IO and LASTI *
Primavera development plans. With these systems all at the same schedule status
level, active management of the interactions between systems and schedule
forecasting is possible.
The present Advanced LIGO replanning exercise assumes that the funding start
date has moved a year to the start of FY06 (October 2005). As we go through the
replanning process, the forecasted finish date for both the new baseline and
progress schedules will fluctuate until all system plans have been completely
revised.
The replanning exercise entails a bottoms-up scrubbing of scope, schedule and
cost, coupled with the institution of regular schedule progress and earned
value reporting of all Advanced LIGO systems. In additon to the systems
mentioned above, work has started on AOS and ISC, with TNI, 40-M, LDAS and DAQ
revisions expected to start in late May. The goal is to have all the Advanced
LIGO development plans revised and tracking in place by the end of June.
Fabrication and installation activity replanning is expected to be finished by
September, along with a first look at available resources.
From: Larry Jones <ljones@ligo.caltech.edu>
Advanced LIGO Seismic Structure
SEI Structure:
In response to last week's letter from ASI requesting contractual
difinitization, draft versions of the BSC structure Design Requirements were
sent to ASI on 5/4, with further improvements on 5/5. Discussions on these are
continuing as we seek to formalize these to facilitate design. The effect of
this on the schedule of the Design Review is to be determined.
ASI's analysis of the structure's Stage 0 (supporting, or outer stage) shows a
permanent phase transition at 35 Hz (associated with an antiresonance) which
fails our phase requirement, applying to frequencies below 100 Hz. They feel
that another iteration on stiffening Stage 0 will likely place them in the 50
Hz range, but that 100 Hz is not practically reachable. We have told them to go
forward with a "best efforts" goal for this next iteration, and not
to plan to carry the stiffening beyond that level.
ASI is still in the process of re-planning the project cost and schedule with
the HAM structure fabrication removed from the task.
The Design Review meeting for the BSC structure is scheduled for
Actuators:
PSI's actuator interface drawings were received by LIGO on April 29, and
forwarded to ASI. Further details with the interface have been settled.
Position Sensors:
Nothing new.
Seismometers:
Nothing new.
Galling/Dusting Test:
Nothing new.
From: Janeen Romie <romie_j@ligo.caltech.edu>
AdLIGO Suspensions
MC to LASTI in June
Coordinating with many key folks on preparing for the mode cleaner triple
suspension to go to LASTI in June 7-18.
Hybrid Osem
The first eleven hybrid osems came back from the coil winding house, Corona
Magnetics, and are faulty. Corona Magnetics will rewind them. They hope to have
replacement osems by Friday or Monday. We are still currently on schedule for
delivery of the hybrid osems for the MC testing at LASTI in June.
Working with Jusitn on costing.
Suspension Gazebo
Transportation worked with us this afternoon to move things around the lab
in the Synchrotron to make room for the suspension gazebo. Calum and I have
started to lay out the pieces of the gazebo to assemble tomorrow.
Suspensions Controls Prototype Testing Plan
Caroline has provided input, which I will incorporate as soon as possible.
Catcher Development
We are preparing for Russell Jones visit here for the second week of May.
Parts are at the machine shops now to be ready at the end of next week. Calum
and I received the catcher parts Russell sent. We've sent some parts down to
rework with the Physics machine shop. They should be ready by Monday.
From: ctorrie <ctorrie@ligo.caltech.edu>
ADVANCED LIGO SUS
LAB
Janeen and I have been preparing the Synchrotron ahead of Russell Jones'
visit next week from U of Glasgow.
During his visit we hope to suspend a double pendulum with 40kg masses, make
use of a GEO style fibre glass catcher and build a full scale mock up of a
quad.
Norna Robertson will also visit for 1 day next week
MASSES
I have completed the assembly in SolidWorks of the reaction penultimate and
test mass assembly. The next step is to calculate the pitch, balance and
accessibility then to compare moments of inertia and mass with the MATLAB
model.
BLADES
The blade committee hope to have a design and process by the 31st May, several
discussion groups have been arranged over the next few weeks.
From: Helena Armandula <ahelena@ligo.caltech.edu>
Advanced LIGO Coating Development
JMM is coating some 3" dia. thick and thin fused silica substrates with an
increased percentage of Ti.
By changing coating parameters and substrate temperature he was able to
stabilize the Ti, so, optical absorption did not increase with Ti
concentration.
He also found the Ti to be uniform within the coating.
In order to maintain the development within schedule he needs to receive
feedback as soon as possible.
From: Riccardo DeSalvo <desalvo@ligo.caltech.edu>
Barbara
this week I have made and almost finished the circuit to drive the piezo and I
have started to build the thermal box for the cavity.
About the mechanics we have not received the third (replacement) invar's rod
yet (supposed to be here yesterday or today).
Tomorrow from
Maddalena
I have finished the second, debugged, circuit, rearranging the operational
amplifiers. This made the circuit fully stable. We also improved
its performance. We added the possibility to change the time constant of
the thermal compensation tfor fast reaching of the working point.
I'm now tackling a new set of frequence response measurements. I'm preparing to
acquire data via computer, using LabView software. The target is to measure the
effects of the temperature on the blade equilibrium point and to measure the
thermal compensation given by the circuit. Starting Monday we will
rebuild the mechanics of the filter to reduce the effects due to the mechanical
unbalance of the system.
Juri
Got a more powerful computer (faster and more memory) in order to improve the
capability for the numerical calculations. Studying numerically the modes in
a misaligned cavity denies the use the axial symmetry and required a lot
of memory and computational speed. I tried different solutions for the
numerical implementation of this problem and after some tests I found my best
method.
Moreover, following the method explained in a LIGO document by Vyatchanin, I
calculated the misaligned coupling coefficient between the fundamental and the
first modes for a non-spherical cavity and found a slightly different result.
For additional information about this report, contact whitcomb_s@ligo.caltech.edu