Weekly Report for Week Ending October 23, 2003


 Exec. Comm. Agenda
Highlights
LSC
Administration
Hanford Observatory
Livingston Observatory
MIT
Caltech
Detector
40 Meter
TNI
LASTI
Data Analysis
Adv. LIGO Development
Past Weekly Reports

The LIGO Executive Committee Agenda for Monday  October 27, 2003 will be:

 (Meeting time: 10:30 am Pacific Time)
 

  1. Announcements
  2. LSC Issues (Saulson)
  3. Comments on Weekly Report
  4. WBS 1 LIGO I Construction (Lindquist)
  5. WBS 2 LIGO Lab Operations
  6. WBS 3 and 4  Advanced R&D and LIGO II (Shoemaker)
  7. CHANGE CONTROL BOARD/TECHNICAL REVIEW BOARD SESSION AS NEEDED


Special Items:   S3 RUN PLAN


Special Announcements:


Weekly Report Highlights
 


LSC Issues (Saulson)


no report


Laboratory Administration (Lindquist)


LIGO Weekly Site Telecon (Lindquist)

A site teleconference was held on Thursday, October 23, 2003.  The following were among the issues discussed:

S3 - We discussed readiness at the sites for the S3 run.

Conveniuence Checks - Ed Jasnow and the P-Card folks will be at Livingston the first week in December to set up Convenience Checking.

Budgets  - FY 2003 costs are coming in at a higher rate than last year.  Therefore, our estimate of $6 million for the carry-forward is looking too optimistic. In addition, Florence has identified several $100Ks in open commitments at least some of which will have to be covered by the carry-forward.  This is going to put pressure on the Advanced R&D tasks currently budgeted using the carry-forward.

Health Care Plan for Livingston - A discussion was held regarding the change in health care plans at Livingston.   Mike Zucker stated that the LLO staff did not receive complete packages, or comparative information until very late, and could not possibly complete their decisions by the end of the open enrollment period.  Ed Jasnow agreed to contact Anna Haddon, HR's benefits specialist, to try to resolve the issues.  Subsequently, Ed contacted Anna, and she forwarded a comparison of the Healthnet's Southern California Plan and their National Plan, which will be used in Louisiana.  She also agreed to extend the open enrollment period for LLO by at least one week.

Property - Ed Chargois is at Livingston selling lots of the excess property..
The list of current actions revised to reflect the status of open actions assigned through October 23, 2003 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>

ACCOMPLISHMENTS (This report reflects activity for the past month.)


> From: Cleveland Mak <mak_c@ligo.caltech.edu>

ACTIVITY


10/23/03 Packages Faxes
In 27 33
Out 15 23

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>
SUBCONTRACTS MANAGEMENT (Petrac, Jasnow)

From: irena@ligo.caltech.edu (Irena Petrac)

From: Ed Jasnow <jasnow@ligo.caltech.edu>

SUPPORT (Baldon, Lloyd, Tischler)

>Irene Baldon
(This report covers four working days, October 9-14).

>Dorothy Lloyd >From: Ryan Tischler <rtischle@ligo.caltech.edu>

ADVANCED LIGO (Cost Schedule Control Systems) T. Frey
From: Thomas Frey <tfrey@ligo.caltech.edu>
 

 

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/
 

 

Continued development of a proposal for implementing Primavera Project Planner Enterprise.

Advanced LIGO Request
Continue to update the TNI Schedule and incorporate any changes. Continue to update the LASTI Schedule and incorporate any changes.
Cost Book Tool.
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.


Reports (Lindquist)

Have a draft of a Final Report for Cooperative Agreement NSF PHY-9210038, the cooperative agreement that covered construction, installation and commissioning, and initial operations of the sites, nearly ready for internal review.  I hope to have it out this week.  The target is to have a final draft on the LIGO web page in time for the NSF Review, November 17, 2003.


Change Control/Contingency (Lindquist)

The following change requests are open.
 
CR-030015 FY 2003 Livingston Observatory Detector Maintenance Expenses (Increment) R. Wooley July 14, 2003
CR-030016 Hanford Facilities 2.2--Divide the Large Equipment Access to Facilitate Movement of Large Items (currently assigned to FY 2004 liens list) J. Worden July 31, 2003
CR-030017 Livingston Computing (WBS 3.5) WAN Upgrade A. Lazzarini October 17, 2003

CR-030017 proposes to upgrade the LIGO Laboratory Wide Area Network (WAN) at Livingston from 2xT1 (3.088 Mbps) to Gigbit Ethernet (1000  Mbps) at a cost of approximately $217K through 2006.  This is scheduled to be discussed during the Executive Committee Meeting on MOnday, October 27, 2003.


Human Resources (Akutagawa)

From: Cindy Akutagawa <cindy@ligo.caltech.edu>


Quality/Safety (Tyler)

>From: Bill Tyler <tyler@ligo.caltech.edu>



LIGO Hanford Observatory (LHO) and Interferometer Operations (Raab)


From Terry Gunter: A big congratulations to Otto Matherny who retired on September 26, 2003 and Michael Landry who got married on October 12, 2003, both from LHO. !
 

Summary of Commissioning Activities at LIGO Hanford Observatory  (compiled by M. Landry)

The E10 shakedown run began last Friday (17th) evening.  The 4k IFO has been far more
dependable, generally locking readily and posting decent ranges of 1.4-1.8Mpc.  Lock
durations in the current high-power configuration are shorter than those seen during S2,
typically a few hours, up to 6-8h.  The H2 IFO locks rapidly but has not held on for long,
posting duty cycle of ~20% on bad days.  A recent dewhitening modification
(and here too) has resulted in a a much stable 2k over the last 12h.  While DC calibrations must confirmed, preliminary indications point to inspiral ranges of 600-800kpc.

Long term pulsar injections have been performed throughout the run, with downtime
due to bug fixes.  Stochastic, burst and inspiral waveforms were injected Thursday 23rd.
Some interactions with injection scripts (astrophysical, cal lines, alignment dithering)
need to be sorted prior to S3 to ensure reliable application of the waveforms.

4K IFO
Power drifts have been observed in MC2, and in or prior to the pre-modecleaner.
Sensemon range estimates have been noisier than  S2, and we're still trying to understand
this completely.    Restoring the power incident on the mode cleaner to 2.25W (and hence
correct out a power drift from the laser doubled the uncalibrated noise in ASQ and halved
our NS-NS range to 800kpc (saturation effect?  details).  The power was backed down
to ~2W and the range restored.

2K IFO
Lockloss studies were performed.  Bounce modes dominate the RMS noise.  We've been
visited by a beamsplitter internal mode, a sharp peak at 3734Hz.  Investigations are underway
to see if the BS controller or associated filtering is excessively noisy.  The BS is not driven
on the 2k; the FMs are used to lock MICH and PRC loops.
 


LIGO Livingston Observatory (LLO) and Interferometer Operations (Zucker)


no report
 


DETECTOR SCIENCE & ENGINEERING


Seismic Upgrade Project

see also the LASTI report for prototype testing status

Dennis Coyne

·The transition of the hydraulic actuators from the BSC to the HAM platform was completed by Myron, Ken, Lee, Rich et. al.

Jonathan Kern

Spent last weekend manually checking each individual part of the

Hydraulic Pre-isolator to confirm that every item was being manufactured

under an approved DCN, and that no parts had gotten lost in the shuffle

and not detailed or released.  We found a single part that did not have

a corresponding drawing, and a few that had been detailed twice, under

separate drawing numbers. 

The last of the shop drawings should be released this week. This week

spent working with Ken Mailand to wind up last minute issues  of the

pump station for our meeting with the hydraulic consultancy board, and

gathering questions and unresolved piping issues for same.  Wednesday

spent at the consultancy board meeting.

The vendor that provided our PDMWorks server sent a unit with a bad

power supply. This morning they sent a second-hand unit as replacement.

Asked Larry to use his influence to get this taken care of properly.

This afternoon we migrated our temporary PDMWorks server to SW-2004. 

Ken Mailand

I'm finishing up the detail design of the LLO pump station. The 7 pump station motors arrived at CIT, and are in the shop for precision dynamic balance.

The fluid biological growth test is showing nothing after 37+9 weeks.[9 weeks dark environment]

CDS

CDS Software

Rolf Bork reporting
- Modified the LSC software to run the 40m lab system; code installed today.

- Upgraded the Remote Control Room (RCR) machine at Bridge:

- Latest versions of DTT/MEDM/Dataviewer installed; all start from pull 

  down menu.

- All tools run locally and make data only connection through Network 

  Data Server (NDS) or EPICS gateway. These tools can connect directly 

  to both sites and 40m lab (READ ONLY).

- Xpanorama installed to allow moving windows between multiple screens.

- PC installed, mainly for web access and elog.

CDS Hardware

Jay Heefner reporting
- The 40m LSC software and 90% of the electronics are now installed and operational. As a test of the system we locked the michelson. In the process of locking the mich. we found several signals and test points that were not available to DAQ or DTT. These will be corrected.

- Baseline EMI surveys of the end stations, LVEA and storage room have been completed at LLO. A quick glance at the data sows that most of the hash from 0-500MHz is self inflicted. Due to the time varying nature of the signals, we should repeat some of the scans.

PSL

PeterKing
A small high voltage amplifier was drawn up for driving the

PZT-equipped beam steering mirrors.  Initially I ran into some minor

problems in finding a suitable high voltage protective zener diode but

found one from ON Semiconductor

Thermal Compensation

Mike Smith
Developed an analytical model of a mask projector using a reflecting telescope with a ZnSe secondary and eyepiece in Math Cad, have modeled it in ASAP and am trying to evaluate the model with a 10.6 um Gaussian illumination beam.

Errant Beam Blocks

Ken Mailand
I will review with Bob Taylor the complete list of cleaned baffles, mounts, and hardware, sort, and prepare for shipping to LLO and LHO.

Optical Contamination Cavities

Lee Cardenas, Liyuan Zhang
OTF Lab. (W. Bridge)

Contamination Cavity # 1 

This cavity has been recovered and it is in process of alignment to be locked again.

Absorption Test Measurement prototype in standby

We have received the new 30 watts laser from Quantronix.

The new SOP for this laser is completed and reviewed it.

Laser is ready to be turned on.

The new bench for thisnew laser is still under fabrication. 

Scatterometer systeminSTANDBY

The new base to house the larger Sapphire mirror has been completed.

But, we encountered some other situation that it needs to be modified on both bases.

The new optical plate that holds the RTS head is still under fabrication.

OTF Lab at Lauritsen ROOM 38

Cavity #3 

This chamber is pumping now and we are taking ring down and beat 

frequency measurements every day as well as new RGA measurements .

We noticed some change on the beat frequency as it has increased and 

ring down decreased as well as the output power has decreased.

It means that the mirrors absorption has increased. We need to replace these

mirrors.We are hoping to get the new mirrors from REO soon.

Cavity #2 Test cavity in STANDBY.


40 Meter Interferometer (Weinstein)




Thermal Noise Interferometer (Libbrecht)


The noise at the TNI is coming down again. After being frustrated at not breaking the 1e-18 m/rHz barrier, we went back and looked at the coherence between the two arm cavities. It turns out that all of our recent efforts have indeed reduced the electronic noise as much as we expected, but laser frequency noise was apparently higher than we had thought and was impersonating a flat noise floor. When we looked at the coherence, we found it to be quite high, and that allowed us to perform common-mode rejection to uncover the uncorrelated noise. Our best noise floor, with common-mode rejection implemented, is now 5.1e-19 m/rHz at around 13 kHz. We are now double-checking the mirror transfer functions to perform a traceable, rigorous calibration of the equivalent displacement noise.
 


LASTI (Ottaway)


no report


Data Analysis and Computing (Lazzarini)


Simulation and Modeling (Bhawal)
Weekly Physics meeting
-------------------------
Virginio described his recent work on accelerometer signals.
Luca gave an update of  H1 and H2 status. Matt talked about his linear noise model in
matlab. Biplab, Hiro, Matt discussed about modifications necessary in FFT for
utilizing it in more effective way.
 

Accelerometer signals
---------------------------
(Virginio) Got something useful out of the IFOs accelerometers signals. Using
 a FIR band pass filter 0.3 to 800Hz  (a convolution filter) and integrating
 twice I obtained  a time series which estimates the displacement noise of the
 BSCs. The filtering is necessary mainly to remove large drifts (about 1mm in
 3 minutes time scale). Those drifts look quite unphysical. The probable
 reason of such large drift are losses in cables, accelerometers or somewhere
 else in  the electronics. The band pass can be enlarged to include the
  microseismic peak.
 This signal (31 channels on total) will be used to study lock losses of the
  L1.
The PZT accelerometers provide an acceleration signal above about .5Hz
up to 100Hz (acoustic noise limited).
It will be indeed necessary to synthesize the displacement noise
using the seimometer signal below .5Hz and the accelerometers above .5Hz
 

SimLIGO
-------------
Sensitivity and stability:
 Xiao is running SimLIGO under different conditions to see the stability
 and sensitivities. He is looking into the details of the cause of instability
 and sensitivity degradation. Will be summarized in a few weeks.
 

SimLIGO Noise:
(Hiro) The best sensitivity predicted by SimLIGO is worse than the noise
 predicted by a linear model. The cause of this is being pursued. It could be
 real or could be code error or could be numerical accuracy. It is very
 difficult to pin point.
 

FFT
------
(Biplab and Hiro) While pursuing WFS studies in cold state, we realized that
 it is necessary to modify a few things in FFT to get useful information about
 the current or future implementation of Length & Angular Sensing and
 control  (LSC and ASC). We decided to modify the current FFT code to generate
 more field outputs necessary for studying both LIGO1 and advanced LIGO and to
 have a matlab code that will generate LSC and ASC signals from FFT's outputs.
 

Code development and maintenance
------------------------------------
(Melody, Hiro) C++ FUNC:
 The basic implementation of the C++ based FUNC module is done. Each
 FUNC instance generates a C++ code file and compiled and linked to a common
 shared library. This is done because the macro definitions for each instance
 could be different, even if the FUNC code is the same. E.g., FUNC code
 is like out0 = factor*in0, and the macro value for "factor" could be
 different from one instance to another. Now, another possibility is pursued.
 I.e., the database of macro is passed to the C++ code and processed at the
 run time. This way, only one code needs to be generated for one equation.
 The above expression may be like
 out0 = db.getval('factor') * in0.
 FUNC is a very important element from convenience and speed point of
 view, and the best combination is being examined.
 

(Melody)
        - Dynamically compiled and linked FUNC capabilities:  Finished code
        modifications to extend FUNC_X to VxV primitives and to provide
        backward compatibility to previously created box files.  Now working
        on creating less source code by passing in the macro definitions
        (database) into the class object.
        - Removed references to mi.h (previous attempt to create dynamic
        libraries in e2e).
 

Alfi
--------
(Bruce)
        - More cleaning of edit window initialization code.
        - Added Macro indicators in the container tree.
        - Fixing Copy/Paste bug created by change in initialization procedure.
 

LIGO Data Analysis System
 

Software Systems (Blackburn)
 

Several serious bugs in the diskCacheAPI were discovered immediately
after the 0.8.0 release on Friday of last week. These have for the most
part been resolved. There is one remaining issue with learned frame files
being mysteriously forgotten at a later time. A patched version with
most of the diskCacheAPI bugs has been installed at the LLO, LHO, MIT,
CIT sites and the remaining issues will be fixed in the next scheduled
release of LDAS early next week.
 

We now have the ability to run the inspiral DSO search codes for the
version 3.0 release of LAL and LALwrapper under LDAS. There will be a
new release of LAL and LAL wrapper early next week with new versions
of the power and waveburst DSOs which we will need to update in out
system test suite. We have begun running through all the S2 RDS data
as part of a mini-test run using the slope and tfcluster DSOs. There
seems to be issues for the slope DSO under certain input data conditions.
This mini-test run has also identified a couple of new issues for the
eventMonitorAPI, metaDataAPI and lightWeightAPI. They may be centrally
associated with the fact that we had a second client attached to the
database server at the times when these issues were occurring in the
three APIs. Further investigation will be necessary.
 

We have begun investigations of how to best profile the LDAS software.
Most profiling tools are designed to work on a.out processes. LDAS as
a system which combines TCL and C++ shared objects works in a way that
may make profiling a bit challenging.
 

The SINSTALL script used to maintain LDCG packages used by LDAS such
as the compilers, interpreters and other tools has been upgraded to
be consistent with the code base of the current release.
 

A bug which was causing the eventMonitorAPI to crash when data was
directed to both the lightWeightAPI and metaDataAPI at the same time
was tracked down and fixed. This will be fixed in the release of LDAS
next Monday or Tuesday.
 

Began testing LDAS against a newer version of the STLPort package which
provides an alternate standard template library. This is not an official
release, but a release candidate instead. It clearly works better than
the previous beta version we tested LDAS code against.
 

The long standing color settings for the fonts used in the LDAS account
application page has now been fixed. The email message sent out by the
automated application software are more descriptive with regard to the
action taken by the software.
 

Hardware Systems (Anderson)
Caltech
-------
(Dan Kozak)
 

* Did some cleanup from the 9940A to 9940B format transition in SAM-QFS
  (a few files had been left behind).
 

* Continued to copy E7 data from HPSS to SAM-QFS.  LHO full frames are "done".
  I'm now doing a final check and catching files that got truncated when HPSS
  hung at various points.
 

* Did FC switch firmware upgrades at LHO/LLO.  Reset their 3510s to "point
  to point only" FC mode.
 

* Continued to try to figure out the LHO "missing data" problem.  Did many
  tests at CIT and have yet to find the problem on any data written at
  CIT or LLO.  Data that I exported from LHO also came thru fine, so it
  seems likely that a more paranoid procedure for ejecting tapes will work
  around the problem.
 

(Hari Pulapaka)
 

* This week I have been working only on the E10 data publishing from
  the sites LLO and LHO to CIT and further.
 

* For that I had to debug LDR quite a few times, both at the sites and
  at ldas-cit to get the data flowing, this included solving a couple of
  firewall related problems.
 

* MY publishing script had crashed during the publishing because it
  could not connect to the mysql database, so had to modify/debug that. I
  also made some improvements to it in terms of efficiency
 

* Wrote a new program to update the locked segments bit in the database
  for all the files that have already been published.
 

* The LDR installation at LLO had to be tweaked as the gateway box at
  LLO changed.
 

(Al Wilson)
 

* Replace motherboard in datacache machine. It is now running copper gig-e
  and SMP kernel. The new board uses Intel chipset.
 

* Working on printer setup in cfdef for desktop machines.
 

* Completed the dual boot setup for m50.
 

* Added a new hard drive in m71 for /usr1 storage.
 

* Working on a data safe procedure for updating datacache machines to RH9.
 

(Stuart Anderson)
 

* Received the new 8x1.2GHz V880 and installed Solaris 9. If initial
  testing goes well this server will replace the older V880 as the
  central data archive server in time for S3.
 

* Received full set of replacement motherboards to increase the stability
  of the IDE-RAID units holding reduced frame data sets.
 

* Worked with LDAS programmers to debug the new multi-threaded diskcacheAPI.
 

* Helped MIT and LLO do the initial configuration on the new 280R
  LDAS gateway servers.
 

Livingston
----------
(Igor Yakushin)
 

* Exchanged RDS tapes from MDC with LHO.
 

* Asked ASA to replace the motherboard of node31 which cannot
  communicate faster than 100Mb/s.
 

* Ordered 8 spare drives that can be used in IDE RAID, nodes, beowulf,
  datacon, new metaserver.
 

* Ordered and received more fiber patch cables.
 

* Last week the old gateway machine was replaced by the new faster one,
  3510 was upgraded by Dan to the new version of firmware.
 

* Archiving E10 data and running createRDS. That revealed problems in
  diskcacheAPI reliability and performance. The patch that is supposed to
  fix these problems was pushed to sites by Phil yesterday. So far I have
  not seen any problems yet.
 

* Received the new dataserver.
 

* Renewed cybernetics support contract for the old tape library for
  another year.
 

Hanford
-------
(Greg Mendell)
 

* The main sys admin activity this week at LHO is creating E10 rds data,
  and archiving the rds and full frame data.  We are also making final
  preparations for S3.
 

Data Analysis Activities (Lazzarini)
 

Creighton:
Improved the efficiency of LAL signal injection code (needed for
online hardware injection) by:
 

* Removing the interpolation of the detector transfer function when it
  is not required (e.g. monocrhomatic sources for which the response
  is constant)
 

* Incorporating compile-time options to allow the use of faster but
  less-accurate libsunmath trig functions on Solaris
 

Mendell:
1) Attained the Astronomical Data Analysis Software & Systems XIII
meeting Oct 10-16.  The focus of the meeting was Virtual Observatories,
especially on standards for registering, archiving, and cataloging data,
and connecting these to grid services.
 

2) Gave minor assistance to the PULG group's pulsar injection plans for
E10 and S3.
 

Shawhan:
Mostly worked on astrophysical signal injection for the E10 and S3 runs.
We have continuous pulsar injections in place now, though it took much
more effort that I expected to work through various problems.  Szabi and
I did a series of burst and inspiral injections last night.  Still have
to get the stochastic background injection working.
 

Weinstein:
- Studied the LSC DARM and actuation models from Gaby et al
- Used them to make waveforms for injection, with actuation compensation
- Sent a hardware injection plan for S3 to Peter and Szabi.
- Starting to look at the results.
 

Yakushin
 

1) Built simulation infrastructure into the waveburst. Running
sine-gaussian simulations to estimate the efficiency of the algorithm.
2) Tuning selection algorithm on hardware injections.
 

General Computing (Wallace)
MIT:
(Keith)
Nothing to report
 

Hanford:
(Christine)
Will report next week.
 
 

Livingston:
(Shannon)
-The entire span of the last two weeks has been spent fixing multiple
problems with the GC file server, NIS+ server, and mail server.  The
first problem seemed to be a disk failure on the file server which may
have aggravated other problems.  Some files have been swapped around on
the file server since the disk failure.  NIS+ had to be rebuilt due to a
problem that manifested itself during the reboot from the drive
failure. The mail server seems to be having some problems also.
Initial suspicions were that it was on inadequate hardware, but now I
suspect that the RAV antivirus software is having some problems.
 

CIT:
(Mike)
-Worked on loading and configuring the KYOCERA copier/printer/scanner
software for DCC. This is located in Bridge Annex. I have loaded and tested
this software on Linda & Cleveland's workstations. Everything seems to be
working okay.
-Loaded a new laptop for Cindy Akutagawa. This included all GC software and
additional software for a voice recognition device.
-Larry Wallace and I tested many different configurations on the video
conferencing, using VRVS/VNC. We still have not come up with a viable
solution that will transmit readable text. There is the share option that
is offered in VRVS. The problem with going that route is, it always seems
to freeze up or you get run time errors. Therefore this is not a reliable
solution. We still need to run more tests until we come up with a reliable,
text readable solution.
-Setup two visitor workstations that will be working under
Riccardo.DeSalvo. One of the workstations had to be reloaded from scratch.
Angelo Gladdin gave me a hand loading this computer, which helped out a lot.
-Updated the ANSYS FLEXlm license server on PICTOR.
-Worked on all NTSRV's running firewall software updates and checking logs
for hardware/ software errors. NTSRV's seem to be running OK.
-There was a lot of onsite/phone user support that included software,
e-mail, printing and networking issues that I took care of this week.
 

(Lisa)
- Spent most of the week compiling and installing a new anit-spam/virus package.
Getting all of it working was a bear but well worth it.  The spam heuristics are
superior to what we are currently running and the administration of the package
is far easier and has more features.
- Helped Rolf on a couple of things regarding the remote cds workstation.
- Wrote up an FAQ on how to configure eudora to use ssl.
 

(Veronica)
- LIGO website: Updates to various pages. Posted a new
information about SURF'04. Updated Internal Bulletin Board. Addressed an
issue of use of images for science publishers and prepared several
high-resolution images for them. Helped Donna troubleshoot a webpage of
presentations by Barry. Working with Larry and Mike on further
troubleshooting of the VRVS-VNC setup in preparation for its extensive use
in the upcoming months. Started working on the website for the Aspen 2004
Winter Conference.
- User support of GNATS database. A request from Keith Riles was to
facilitate multiple users accessing the progress report submit tool during
science monitoring. I added new users and created a bulk account for a
number of people to use during the scimon; tested the setup by submitting
and editing a couple of reports.
- LSC website: Posting updates to the November meeting webiste as they
arrive almost hourly.
- Project Science website: Installed a presentation and supporting media
files for one of the last workshop's talks.
- CaJAGWR website: user support.
 

(Larry)
-Spent time working on a couple of issues with the Livingston group. The e-mail
and NIS+ server are working but things still need to be optimized on the units.
The paperwork for the WAN connection is being worked on by a number of people.
LSU is also being supportive in getting things going. If all goes well the new
WAN connection may be in place before the end of the year.
-Worked a number of DCC issues. Helped resolve a few items with the new software
as well as resolving some document conversion issues.
-Pcard work took some time this past week but most of that was because of the
large number of items purchased and not having the needed invoices to complete
the paperwork.
-Ordered a couple of new PC's. Still working on getting a few more notebooks in
before the end users start traveling.
-Started connecting up the new systems for Hiro. The LDAS group will need to be
involved in the configuration and s/w installation on the first few units.
-End user support covering patch installs, cleaning off viruses and adware
programs to setting up more calendar accounts using the Calcium package, has
been taking up more time than usual.
-Some minor support for the Remote Control Room computers. Hardware swapouts
for a couple of users.
-We have added another 30+ locations to be blocked because of spam problems.
Hopefully, we will be making a decision on which new e-mail filtering pkg. is
going to replace the RAV pkg., in the near future.
-Preparing for the various meetings/conferences that are coming up next month.
 

(Bruce Sears)
-Systems Work:                                    (0.5 days)
       - Ilog maintenance and user updates.
 


Advanced LIGO Development (Shoemaker)



 

Advanced LIGO and supporting R&D

Suspension

From: ctorrie <ctorrie@ligo.caltech.edu>

Suspension Workshop
For the last 2 weeks or so we have been preparing and hosting a Suspension Workshop at caltech. During this time teams from the UK and US side of advanced LIGO assembled and damped 2 Mode Cleaner Suspensions at Caltech.

Recycling Mirror suspension

Mike Perreur-Lloyd and I are working on aspects relating to what we have done so far in terms of drawings etc ..., preparing the new cantilever blade drawings for quote and analysing the masses and moments of inertia of the suspended mass assemblies in SolidWorkswrt the MATLAB model. the latter was done with Norna Robertson.

Layout of the ETM
Norna, Larry and I have been discussing the possibility of reducing the overall height of the ETM from 210.5 mm to 200.5mm. A full summary of this work and what has to be done to achieve this will appear next week.

Coils
Russell Jones and I are working on preparing the drawings associated with ordering local control coils for the MC, RM and ETM Controls Prototype Suspensions. Larry Jones has offered to review the drawings for us


Pre-stabilized Laser

From: Peter King <pking@ligo.caltech.edu>


    Fabrication of the short low-finesse triangular cavity was completed
last week.  Curing of the epoxy took a little longer than expected due to
the low room temperature.  The measured cavity finesse was approximately 150
which is close to the desired value of approximately 100.  Given the +/- 1%
tolerance on the optics coatings, this is not too surprising.  An image of
the cavity is available here
        http://www.ligo.caltech.edu/~pking/ring/setup2.jpg
The cavity bandwidth (FWHM) was estimated to be approximately 20 MHz.
.

Core Optics

From: Helena Armandula <ahelena@ligo.caltech.edu>


Ribbon / Fibers Downselect and other issues

Had a first meeting to discuss ribbon vs. fibers manufacturing development, prism (ear) design, optic's flat definition and silicate bonding development.
The manufacturing development of ribbons and dumbbell fibers to meet Ad LIGO specs. may take up to 2 years.
The manufacturing development will take place in Glasgow,then a technology transfer to Caltech's Observatories will take place.
A CO2 laser system, under development, will be used to pull and weld ribbons.
Break off (flexing) point of ribbons is 0.3 mm; flexing point of dumbbell fibers is 3 mm.
As expressed in the ADLIGO SUS System Conceptual Design, ribbons are the baseline, dumbbell fibers the alternative, cylindrical fibers the last fall back choice.
Ribbons and dumbbell fibers to be used only on ITM's and ETM's suspensions.
We'll have a prism -"ear" preliminary design next month for the MC noise prototype (scaled down from GEO) and an "ear" preliminary design for ITM's and ETM's (scaled up from GEO)
The effect of a 10 cm flat on test masses is being evaluated for optical implications.
 


Auxiliary Optics

From: Michael Smith <smith@ligo.caltech.edu>

PHOTON DRIVE R&D
Awaiting replacement of the 500 mW laser.


For additional information about this report, contact sanders@ligo.caltech.edu