The LIGO Executive Committee Agenda for Monday February 28, 2005 will be:
(Meeting time: 10:30 am Pacific Time)
·
CR-050003 requests funds
for a Corning 7980 Blank to replace the sapphire test masses that were intended
for LASTI.
Special Items:
No report
STATUS OF LSC MOUs (Petrac)
LSC MOUs and Research Plans and Progress Reports
Most LSC groups have submitted their research plans for 02-15-05 to
08-15-05 and Progress Reports through February 2005. These are undergoing LSC
review.
For a web page summary showing the status of LSC MOUs and associated Attachment
updates see:
http://www.ligo.caltech.edu/~irena/Revstatus/Reviewstat.doc
Non-LSC MOUs
· No report.
SITE TELECONFERENCE
(Lindquist)
A site teleconference was held on Thursday, February 24, 2005.
The following items were among those discussed:
PROPERTY MANAGEMENT
(Chargois)
>From: Ed Chargois <chargois_e@ligo.caltech.edu>
DOCUMENT CONTROL CENTER
(Turner, Mak)
>From: Linda Turner - turner@ligo.caltech.edu>
>From: Cleveland Mak <mak_c@ligo.caltech.edu>
COST SCHEDULE CONTROL
SYSTEMS (Cunningham, Brambila, Kaufman, Salone)
>From: Esther Cunningham <esther@ligo.caltech.edu>
>From: "Brambila, Ruth" <Ruth.Brambila@caltech.edu>
>From: Gina Salone <gsalone@ligo.caltech.edu>
>From: Florence Kaufman <fkaufman>
SUBCONTRACTS MANAGEMENT
(Petrac, Jasnow)
>From: irena@ligo.caltech.edu (Irena Petrac)
>From: Ed Jasnow <jasnow@ligo.caltech.edu>
SUPPORT (Baldon,
Lloyd)
>Irene Baldon
>Dorothy Lloyd
PROPOSALS and REPORTS
(Lindquist)
Nothing to report.
DCC Steering Committee (Lindquist)
The DCC Steering Committee met February 22, 2005. Discussion
continued on the requirements matrix currently under development. The
next meeting of the DCC steering committee is scheduled for Tuesday, March 2,
2005. The location has been moved to the SCR while installation of the
new air conditioning is in progress.
CHANGE CONTROL/CONTINGENCY MANAGEMENT
(Lindquist)
>From: Cindy Akutagawa <cindy@ligo.caltech.edu>
Quality/Safety (Tyler)
>From: Bill Tyler <tyler@ligo.caltech.edu>
This has been a particularly busy week due to preparations for the S4 run. H1 locking and range issues were sorted out over the weekend and, after a rocky first few hours of the S4 run, both interferometers have been performing well.
Hanford hosted a meeting of our Local Educator Network (outreach advisory council) on 2/17.
LLO has been struggling with a power outage and the staff has been
consumed by the recovery. The
following submittals have not been edited.
From: Valera Frolov
The interferometer commissioning was focused on improving the robustness, and connecting and testing various monitoring channels in preparation for the S4 run. The interferometer ran with high duty cycle (around 80%) during the weekend and the first day of the S4 run. The inspiral range was around 6 Mpc during the day and 7 Mpc during the night. We set the new site record by logging 18-hour lock stretch.
We experienced a complete power outage early Thursday morning and the recovery effort is still in progress at the time of this writing.
Commissioning activities included:
From: "Oddvar Spjeld"
From: Igor Yakushin
From: Rich Riesen
Commissioning my newly learned skills and knowledge acquired from LSO training last week.
Found no safety concerns during my weekly site safety tour.
see also the CDS weekly meeting minutes in the commissioning archives
no report
Rich Abbott reporting
Jay Heefner and Ben Abbott reporting
Fiber Optic Timing Link (Sander)
AdL SUS (Mohana)
ISS (Flavio)
LSC PD (Ben)
EE Shop (Todd)
no report
PeterKing
The low-frequency intensity noise of an NPRO was measured with suspended photodetector. Most of the noise unfortunately seems to be due to the crude suspension employed with the mechanical resonances clearly evident.
Lee Cardenas, Liyuan Zhang
OTF Lab. (W. Bridge) In recovery
This chamber stil has two samples, white Ceramabond, and disks of TRA-BOND
#2254 color light brown epoxy. Cavity is in recovery after the full shut
down. cavity is been pumping with
Ion pump. The roughing pump is
under a minor refurbishing, oil changed and filters etc.
Absorption Test Measurement prototype shut down
Scatterometer system in progress after recovery
The fused silica 2ITM04 is back in the scatterometer enclosure as
reference. We were scanning
the 2ITM02 for beam scattering BUT it shows huge scattering peeks. We have had cleaned it (Helena) But the
results was the same. We have
fully cleaned (two each) a 1.00" inch 70ppm mirror and took the scan
and the result was much better, therefore this means that the big mirror needs
better cleaning. The fabrication
of a new mount to accommodate one inch mirror under the
scatterometer is underway.
The Quantronix 60 watt laser still fully shut down
OTF Lab at Lauritsen ROOM 38
Cavity #3 not
a major change
The contamination test for (6) new disks of VAC SEAL Epoxy samples is in
progress. Cavity is locked and we are taking measurements for absorption
and ring down for contamination loss every day.
Cavity #2 in progress
Mode matching and the alignment of the optics for the new 414 npro is
underway.
The 51cm long contamination cavity is ready for cleaning and bake.
We are still in need of a1/4waveplate, polarizer cube, some lenses.
No report
We have nothing significant to report this week at LASTI.
E2E weekly Meeting
Monica Varvella presented comparison of transfer functions for common and differential mode signals calculated using E2E and Twiddle model for the 40meter dual-recycled interferometer.
Mechanical Simulation
(Mark Barton) I finished debugging the new pendulum modeling toolkit and simplified Mathematica triple pendulum model that I reported last week, and created an e2e model that uses the exported state-space description. As hoped, the time domain simulation runs much faster than before.
Recycling Gain in Various
Thermal States
(Biplab) Using FFT model, studied variation in recycling gain of both sidebands and the imbalance between them as a function of various combinations of heated states of two input mirrors (ITM). Studied these for 3 different cases:
(i) changing effective refractive indices of ITMs
(ii) Keeping refractive indices at 1.45 but using spherical phase maps
(iii) Using realistic phasemaps generated by Phil Willems.
These results will also be used to qualitatively characterize and understand differences in phase camera images.
Simulation of 40 meter
Interferometer
(Monica) Common and Differential arm (CARM and DARM) mode signals obtained with e2e package have been compared with Twiddle results: The primary signals seem to match well (DARM Asymmetric Port @ 166 MHz and DARM Asymmetric Port @ 33 MHz, CARM Symmetric Port @ 33 MHz) but there are some differences in the secondary channels. Tests are in progress to understand these differences.
Alfi
(Bruce)
(Melody)
Creighton:
I'm reworking the Einstein@home validator to deal better with floating-point differences between architectures: first, by computing relative rather than absolute differences among files; second, by thresholding on individual events rather than accumulating errors among events.
Mandic:
I worked on automating the hardware injections of burst and inspiral waveforms. The goal is to perform these injections on a daily basis, few minutes per day, so automating the procedure would reduce the down-time of the interferometers. I also worked on preparing the various waveforms and auxiliary files for injections. Finally, we performed stochastic injections in the LLO-ALLEGRO pair.
Mendell:
I have organized the plots showing showing distance, frequency, and epsilon (quadrupole moment) covered by the various continuous-wave searches using S2, S3, and post-S3 noise curves. These plots are posted on the PULG S2 investigations page, under the General catagory, at this password protected URL: http://www.lsc-group.phys.uwm.edu/cgi-bin/enote.pl? nb=puls2general&action=view&page=44.
Shawhan:
Yakushin:
LDAS:
Creation of the Level 1 and Level 3 RDS frames at the sites have been flawless so far during the science run.
Users of LDAS have been doing a significant about of simulated data geneation using the dataConditionAPI and writing the data products as frame files. This has on two occasions filled up the filesystem. To minimize this we are investigating making changes to user commands to support data compression in the frame data products. This will require a modification to the SWIG wrappers used by TCL and changes to the Tcl layer in the frameAPI for all classes of user commands that can output frame files.
The new features in the createRDS command to support data dropouts in the interferometers has uncovered a new issue with trying to merge Hanford and Livingston frame files. With the new feature it is possible that the frame lengths for overlapping GPS times are not the same due to the dropouts being supported. The software doesn't properly handle attempting to merge these time length dissimilar frames (which wasn't possible prior to the new features. We'll be working on a solution for this and push out a 1.5.1 release with the fix before the end of the science run. The merging is not needed during the science run so this shouldn't present a problem at this time. We expect to have the 1.5.1 release within two weeks.
Currently investigating the port of LDAS and LDCG software to the GCC 3.4.3 compiler on one of the tandem systems. All packages in /ldcg compile except for mozilla and octive (neither being critical). Still need to compile LAL, LALwrapper and finally LDAS.
Mysteriously, the memory leak in the dataConditioningAPI has dropped down by a factor of 5 to its pre Fedora Core 3 level. This has been observed for a week now and there is no explanation.
DB2 has new recommended patches for their database. We will begin testing these this week on one of the tandem systems.
Still waiting to hear that MIT is ready to upgrade to LDAS 1.5.0.
TclGlobus:
Completed I/O client/server with authentication and encryption test case. With MyProxy server, proxy credential can be extended without generating a new proxy certificate.
Fixed XIO TCP and UDP client/server copy test cases. TCP and UDP server attributes were incorrectly used before. Added XIO TCP and UDP atts and cntls online documentation (ROBODOC).
Working on SWIG implementation of globus_io_register_select().
Working on Tcl test cases to exercise the following I/O functions:
Two out of 96 SWIG-wrapped Globus I/O functions are still buggy. The functions are:
Open Science Grid R&D (OSG):
We lost our green light on the OSG sites board shortly after the end of the integration meeting last week. This is due to the user directories not being setup properly from a permissions point. Since a new release of the OSG software cache was announced this week (0.1.2), we decided to reinstall and fix the issues while upgrading.
The cluster used for our OSG testbed had two more nodes taken out over the weekend. This has left us with a single node to use for computing behind our OSG gatekeeper.
We have continued to find minor system level configuration issues on our OSG testbed that we hope to have fixed this week so that actual jobs can be run.
One aspect of the OSG testbed that was expected to be integrated at the meeting was the storage management software (SRM/DRM). Unfortunately, this package is not yet ready and it may be a week or two before it is release and we can begin experimenting.
Caltech
(Dan Kozak)
(Stuart Anderson)
MIT
(Keith Bayer)
Livingston
(Igor Yakushin)
Hanford
(Greg Mendell)
(Ben Johnson)
MIT:
(Keith)
Livingston:
(Shannon)
No report received
Hanford:
(Christine)
CIT:
(Mike)
(Veronica)
(Larry)
See
also:
Planning
·
Worked a little
on the installation planning, intended as a follow up to a presentation/meeting
last October. This will be an agenda item for the SUS breakout session at the
upcoming LSC meeting.
Records Of Decision or Agreement (RODA)
See also the RODA
status web page
·
no new or
changed RODA status
Requirements
·
nothing new.
Interface Issues
See the "Interfaces" section of the AL Systems web
page
· Continuing coupled SEI/Quad dynamics analysis in modal basis -- a report is being prepared. Have also started to integrate a more up-to-date SUS structure model.
·
Nothing new to report.
From: Carol Wilkinson
<wilkinson@apex.ligo-wa.caltech.edu>
Advanced LIGO Project Management
Advanced LIGO Progress
Updates
The next progress update for Advanced LIGO development
activities will cover the period from February 1 through March 31. Updates are
due by the 7th of April.
Advanced
LIGO Project Planning
Work is progressing on up-dating the MREF-funded portion of
the Advanced LIGO project. These updates are required to address funding
changes stipulated by NSF and to incorporate new knowledge affecting scope,
costs, and schedule. In order to take advantage of the new cost manager
software, activities are being arranged into work packages corresponding to
cost control accounts for cost and performace tracking. Resource personnel
information is also being loaded into the Primavera schedule to facilitate
workforce scheduling and planning for the transition of personnel from
operations to project and back.
The Installation and Facility Modification sub-projects are the first to be
updated. Work on these sub-projects is expected to take until the end of
March, when the effort will move on to updating the sub-system
procurement, fabrication, and assembly phases. The remainder of the
Advanced LIGO research and development work, with the exception of some final
design activites, will not be included in this effort. The updating work is
expected to be complete by the end of June.
From: "Thomas Frey"
<tfrey@ligo.caltech.edu>
Progress
Period from 02.18 to 02.24
Out
of the office on 02.18, and 21
·
See http://www.ligo.caltech.edu/~tfrey/index.html
for a complete listing of all project related cost and schedule data.
Accomplishments:
·
Sub-system PLANNING activities
§
Continued
work on preparing web space for posting Adv. LIGO reports. ("The Whole
Enchilada")
§
Continued
work on the 40-Meter schedule changes.
§
Executed
telecoms with Carol and Dwight.
§
Finished
work preparing progress data requests for progress period ending 03.31.05.
·
ROSTER
DATABASE:
§
Assisting
Irena as needed on record changes.
§
Continue to assist
Irena with setting up her web site to accommodate review of attachment As.
§
Assisting
Peter Saulson regarding PI mail list.
§
Working with
Dwight to set up his access to the roster database.
·
COST BOOK
DATABASE:
§ Prepared data requested by Carol - WBS Structure / Definitions.
From:
Ken Mason <kmason@ligo.mit.edu>
Advanced LIGO Seismic Structure
SEI Structure:
92 0f 135 drawings have been completed and released by ASI. All remaining
drawings have been completed and are in different stages of checking.
ASI will have all drawings complete by Friday. Ed Jasnow plans on picking up
the documentation on Friday and make copies to send to LIGO personnel for
review.
The buy-off meeting scheduled for 3/8 at ASI is in jeopardy. There is
concern there is not enough time to dig through all drawings, analysis, and
project files before we need to buyoff on the package. Also Ed Jasnow is
unavailable on that date.
Actuators:
Four large and one small actuator has been assembled and tested. PSI plans to
have all actuators completed by Friday of this week. I plan on sitting down
with Scott Stewart and Scott Greely next Tuesday to review test results and to
discuss the thermal modeling they did during the design of the actuators.
From:
Janeen Romie <romie_j@ligo.caltech.edu>
AdLIGO
Suspensions
Working on modeling the tablecloth for an fea of its
resonances. Working with SUS team on welding issues.
Coordinating with Calum and Ian on Ian's visit here in March. To support that
we are considering sending him the parts and hardware for his subassemblies
beforehand so that he may assemble them and redline any drawings, if required.
He'd then send the assembled stuff back just prior to his arrival here on March
14th. His travel plans are still in the preliminary stages, but we hope this
set-up will make maximum use of his time here. Personal and professional
committments keep him in the
Continuing to meet with Laurent every Tuesday at
Supporting Oddvar and Ken Mailand on their installation fixture designs.
Met with Carol on SUS budgets and schedules. Good meeting. I have an action to
provide budget projections through 2008, in the next week. I hope to get to
that tomorrow with Thomas.
Gin Gin
Planning a telecon with Bram next week.
From:
ctorrie <ctorrie@ligo.caltech.edu>
Advanced LIGO Suspensions
1) QUAD ETM SUSPENSION
Work is continuing on the quad build at Caltech. All of the suspended stages
are now ready and we hope to suspend some of these later this week. The
machining of upper structure will be started this week.
2) MODE CLEANER at LASTI
The MC team (Rich, Laurent, Norna, Janeen, Mark, Calum with some input form Ken
Strain) have now successfully matched up all of the transfer functions (and
mode frequencies) between the Caltech and MIT suspensions and the MATLAB model.
The one item that eluded us was rectified this week when we realised that the
wrong wire diameter was chosen on the MIT suspension. Once we realised this all
of the numbers agreed.
3) FEA of STRUCTURE
We are now working with an overall structure that has a first resonance
somewhere between 85 and 100 Hz. The range is due to the fact that we are
finalizing what mass we have allocated for the various stages. A version has been created to allow
Dennis to look at the coupled analysis with the seismic structure.
4) CALTECH LAB
http://www.ligo.caltech.edu/%7Ectorrie/pictures/quadfeb2005/Quadfeb2005.html
and
http://www.ligo.caltech.edu/%7Ectorrie/pictures/quad17feb2005/Quad17feb2005.html
5) VISITS
Mike Perreur Lloyd has just left after a successful 4 weeks visit to Caltech.
Russell Jones, from the
6) Design Meeting
http://www.ligo.caltech.edu/~ctorrie/QUAD_ETM/quad_etm_setup_page2.html
From: Ken mailand
<kmailand@ligo.caltech.edu>
Adv. LIGO
I'm currently learning solidworks, and working on the lower suspension
installation arm to move the lower suspension into the BSC chamber. Also I have
finished designing a platform for the modules for the BSC chamber, to fit
either the large or small port tube, and to allow positioning possibilities to
clear obstructions that may be near the chamber.
I have ordered hardware and stock to make one to fit the large and small port.
I spoke to Riccardo re. his previous experience with the air bake ovens, for
possible configurations and space requirements. This preliminary hardware
design showing an oven with a integral wash cleaning platform was sent for
quote, the hardware configuration was modified this week. The preliminary cost
estimate for this bake oven/cleaning station should be at CIT in a soon.
I have requested a ball park baking estimate from NTS based on our visit, not a
quote, just an ROM for our budgeting use. We can use this with Astro-Pacs
cleaning estimate and other shipping and handling costs estimates to compare
with our in house estimate, for this task. I spoke to Michael Mize 2-16
and NTS expects to have the ROM finished and to us by 2-23, I left a message
today inquiring about the date of the
From:
"Mark Barton" <mbarton@ligo.caltech.edu>
AdvLIGO: I used the simplified Mathematica triple pendulum model created for
e2e to generate a set of state-space matrix elements in symbolic form. These
can be used to replace the ones currently used in the GEO Matlab triple
pendulum model, and provide better modeling of the blade-wire geometry (the
existing code effectively assumes that each blade flexes along the same
diagonal axis as the associated wire, rather than vertically). This will allow
design space with steeply angled wires to be expored with more confidence. (A
quad version is in the works.)
From: Helena Armandula ahelena@ligo.caltech.edu
Advanced LIGO Coatings
LMA
Will be placing an order to coat 4 mirrors to be used in the TNI
experiment. The coating will be
multi layers of doped Ta2O5 / SiO2 (Formula
2). This coating
formula produced the lowest mechanical loss to date.
CSIRO
After evaluating different annealing temperatures, CSIRO obtained a Ta2O5 /
SiO2 multi layer coating where the Ta2O5 has zero stress.
Substrates will be coated and annealed this way to evaluate the effect of zero
stress Ta2O5 in mechanical loss.
From:
Peter King pking@ligo.caltech.edu
So far so good with the high power photodetector
exposure test. A little over 2 weeks running at 375 mA without any
obvious signs of damage.
A new photodetector topology is being explored. However a limitation is
the amount of photocurrent the design can handle. I have not thought of a
way to overcome this as yet.
From: Michael Smith
<smith@ligo.caltech.edu>
STRAY LIGHT CONTROL--In the process of updating
the scattered light budget for Adv LIGO, with emphasis on the recycing cavity
scattering budget and the requirements for scattering by MMT.
From:
Riccardo DeSalvo <desalvo@ligo.caltech.edu>
Juri (23Feb):
Im still working on my cavity simulation using a FFT routine. I made a
one-dimensional version of a propagation routine in order to check the grid
definitions in the Fourier-space. Then I compared the FFT results with the
analytical calculations for a Gaussian beam: the two methods give the same
results. I worked with Marco on the elaboration with Mathematica of the beam
profiler sampling data.
Marco (23Feb):
I completed the PZTs driver box assembling and it starts working. Further tests
will be done in the next days.
I got the first beam spot images from the BeamView Profiler and I analyzed one
of them by using Mathematica (helped by Juri and Phil Willems). Then I got a
procedure to import and analyze BeamView raw data by Mathematica and learnt about
data features and settings.
I also did a first nonlinear fit test but for some reason it didnt converge.
Creep experiment: we are taking data at the temperature of 190oC.
Erika
Made initial simulations of the mesa beam profile using mirror map of the first
mex hat mirror prototype. As could be expected the mirror is very sensitive on
the mirror imperfections.
Justin
First resonances detected in the modified setup for the si flex joints.
Riccardo
Received from internal refereeinvited paper for the Long Beach ASME meeeting,
submitting to ASME. It will be available in http://www.ligo.caltech.edu/~desalvo/paper_asme-2005.doc
by the week end
For additional information about this report, contact whitcomb_s@ligo.caltech.edu