Weekly Report for Week Ending March 18, 2004

The LIGO Executive Committee Agenda for Monday  March 22, 2004 will be:
 

Special Announcements:

Weekly Report Highlights
 

LSC Issues (Saulson)

no report

LIGO Laboratory Administration (Lindquist)

Status of LSC/MOU Research Updates and Program Reports (Petrac)
(No report this week--vacation)

LIGO Weekly Site Telecon (Lindquist)
No site teleconference was scheduled for Thursday, March 18, 2004.
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.

From: Ed Chargois <chargois_e@ligo.caltech.edu>

• Nothing significant to report.

>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
No report this week (at LSC meeting this week).
> From: Cleveland Mak <mak_c@ligo.caltech.edu>

ACTIVITY
Concentrated mainly on processing of LSC documents from the LSC Meeting this week.  Organized, sorted and filed.

03/18/04	Packages	Faxes
In	20	40
Out	3	23

Press here to access the DOCUMENT CONTROL CENTER WEB PAGE.

From: Esther Cunningham <esther@ligo.caltech.edu>

Press here for ACCOUNTS PAYABLE HISTORY DATA .

From: "Brambila, Ruth" <Ruth.Brambila@caltech.edu>

• Transferred funds as requested on MIT.
• Working on change order #143 to Triad.
• Completed the change order to Benton County.  I did find out that as they have a dollar limit per transaction for credit card payments, it is not feasible at this time to use the pcard for Benton County payments. The change order was routed for corresponding approvals.
• Completed transferring funds on Promec to change the expenditure type from Equipment to Supplies Alloc.
• Placed pcard orders for Caltech and the sites as requested.
• Reconciled pcard for the month which totalled $37,821.43 for 44 transactions.
• Closed out paid Purchase Orders for March 2004.
• Attended the weekly team meeting, the staff meeting, and two training sessions.

• Working with Ken L to add funds for Air Products contract to cover current invoices.
• Continue to work Ligo visitors to refund medical and dental payments.
• Currently working on Promec contract.
• Doing follow up on all copiers maintenance and ordering toner.

From: irena@ligo.caltech.edu (Irena Petrac)
No report (vacation).
From: Ed Jasnow <jasnow@ligo.caltech.edu>

Bids for the Advanced LIGO HEPI voice coil actuators are scheduled to come in on Friday, March 19.  There is concern that these bids may come in at over $100,000, which would require NSF approval at the current threshold.  A request to have the threshold increased to $250,000 is pending before the NSF. [Late breaking news, Caltech has received an amendment to the cooperative agreeemnt --pel]

SUPPORT (Baldon, Lloyd, Tischler)

>Irene Baldon
No Report This Week Due to Illness.
>Dorothy Lloyd

• Processed the usual invoices for payment. Tracked and followed up on invoice problems. Reviewed and recorded payments processed by Esther the week of March 8.
• Processed the usual requisitions, change orders and payment requests.
• Continue to monitor contract and blanket order encumbrance and notify task managers when supplements are needed.
• Jim continued with data entry in the LIGO database and helping out in the DCC.

LSC meeting, PAC16 details..

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

Out of the office on Friday the 5th, Thursday the 11th, Friday the 12th, Monday the 15th, and Tuesday the 16th.

Attended AACE's Western Winter Workshop - http://www.aacesf.com/Western_workshop/2004WWWRegistration.doc
 

Accomplishments:

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/

The following is a summary of status by sub system:
COC - Still need completed WBS dictionary and BOE.
http://ligo.caltech.edu/~tfrey/COC_AdvLIGO/COC_index.html
PSL -  Data pending from Peter King.
http://ligo.caltech.edu/~tfrey/PSL_AdvLIGO/PSL_index.html

Executed meeting with Peter King to discuss the data requested for re-planning.

AOS - Still need completed WBS dictionary and BOE.  Executed meeting scheduled for March 18, 5am PT at LHO.

IO -  Still need completed WBS dictionary and BOE.  Missed meeting scheduled for March 16, 10:30am PT at LHO.

http://ligo.caltech.edu/~tfrey/IO_AdvLIGO/IO_index.html
SUS - Data still pending from Caroline and Helena regarding Ribbon Process and Design.
http://ligo.caltech.edu/~tfrey/SUS_AdvLIGO/SUS_index.html

Posted revised plan and progress schedule.  This includes earned value analysis.

Missed meeting scheduled for March 17, 3:30pm PT at LHO.

SEI - No action required at this point in time.
http://ligo.caltech.edu/~tfrey/SEI_AdvLIGO/SEI_index.html
ISC - Still need completed WBS dictionary and BOE.  Missed meeting scheduled for March 16, 3:00pm PT at LHO.
Received meeting notes from Dennis Coyne and have started review of notes and action items.
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 - Executed meeting(s) scheduled for March 17, 6:00am and 10:30am PT at LHO.

In progress with input of changes per teleconference with David Ottaway and Carol W. on the 20th.

Prepared meeting minutes from meeting of the 20th, and sent out for immediate comment.

Input and posted revised baseline plan for LASTI.

http://www.ligo.caltech.edu/~tfrey/LASTI/lasti_index.html

ROSTER DATABASE:
Continued input of changes / corrections regarding supervisors and departments.

Working with Irena regarding the bounced email addresses reported by use of the LSC mail list(s).

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.

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

Met with Tom Lucas, the LIGO video producer, at Livingston during the LSC meeting.  Tom met with a handful of LSC personnel..

Larry Jones submitted the following change request:
 

CR Number	Description	Submitted By	Date
CR-040003	Sensors & Actuators for the Advanced LIGO Seismic Isolation System (SEI) Prototypes	L. Jones	March 18, 2004

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

• Various personnel/payroll /HR related work.

Quality/Safety (Tyler)

No report this week.
 

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

Summary of Commissioning Activities at LIGO Hanford Observatory  (compiled by L.Matone)

1. This week the main activity on site has been the DAQ upgrade which is now almost complete;
2. An upgrade of the Angular Sensing and Control (ASC) code has also been installed which includes features like an input matrix and the spring compensation;
3. The Photon Calibrator was installed on H1's ETMX (see elog);
4. A PZT actuator was calibrated in preparation for a measurement of the WFS sensitivity to spot positioning (see elog);
5. And a measurement of H1's MC trasmission was summarized in this elog entry.

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

LLO (Zucker et al)
---------------------------------------------------------------------
This week we hosted the spring LSC meeting at LLO. As usual the schedule
was too packed to see and hear everything of interest, but the consensus
seems to be that it was a productive and illuminating meeting all
around.
 

Special thanks to Linda Turner and Ryan Tischler for coming out from
Caltech to support the meeting, to Shannon Roddy for oustanding computer
and telecom support, and of course, to Bonnie
Wooley for masterful organization (and some really awesome meals!).

[Yes, it was a great job! - GHS]
 

Note to travelers: No, we do NOT ship crawfish. You have to come back.
 

L1
--------------------------------------------------------------------
While the Ex HEPI actuator installation went on (see below), we had
numerous
corner-station and one-arm commissioning jobs:
 

Robert Schofield improved the acoustic immunity of the REFL periscope
by replacing some suspect mounts,
and also found the same sort of problem with pulsed-power duct heaters
as
previously documented at LHO.
 

Rick Savage and Rupal Amin characterized the losses and matching of
our PMC cavity, determining that (through an apparently random
selection of
particularly fine mirrors) it happens to be a sweet one.
 

Stefan Ballmer, Rupal and Gregg Harry measured numerous violin mode
suspension Q's,
finding typical results consistent with prior spot measurements (and
also consistent with low thermal noise).
 

Andri Gretarsson, Stefan Ballmer, Rai Weiss and Valera Frolov worked
on the overhaul of the REFL table and POX detection chain. Rai
reworked an LSC photodetector for use at the NR sideband frequency
(61 MHz) to pursue the new common-mode signal scheme, and another
high-power
25 MHz unit for the POX beam.
 

Ash Khan and Peter King tested new software to interface our lasers
to a new type of higher-capacity chiller.
 

Valera Frolov measured the coupling coefficient for intensity noise
coupling to the dark port. The coupling exceeds that expected
from the nominal bilinear fringe offset
model by a factor of 2-3; this is being investigated further.
 

Stefan brought down and adapted the LHO auto-dither alignment
scripts and tested them on the PRM and on the Y arm. Pretty cool.
 

Through all this we were plagued by laser faults, some
related to faulty interlocks and some related to thermal overloading
issues. We are puzzled why these issues should present after years
of operation but have managed to work around them and keep the
laser running intermittently for now.
 

Tonight (Thursday) we have the full machine back and are back to full-up
commissioning.
 

LLO Seismic retrofit (R. Abbott, O. Spjeld and a cast of thousands)
---------------------------------------------------------------------
#MZ BREAKING NEWS: After swapping in HEPI actuators under the
four corners of the ETMx stack, we opened gate valve GV11 to
check the alignment;  to our delight, the return reflection was
back in the corner station, just about where we left it. Pretty
smooth! See
 

http://www.ligo-la.caltech.edu/ilog/pub/ilog.cgi? group=detector&date_to_view=03/18/2004&anchor_to_scroll_to=2004:03:18: 18:00:47-mike
 
 

From Rich A:
1.  Finished the initial installation phase for the HEPI actuators in
the X end station.  The actuators still need bolting to the housing and
the geophones still need to be installed.  This will probably use up the
remainder of the week ending 19 March.  The plan is to move to the Y end
station after building up the new actuators in the staging building.  By
the middle to latter part of next week, we will be under way in the Y
end.
 

2.  The piping installation for HEPI is going well.  The two end
stations are complete and leak checking using "Snoop" is underway.
Helium leak checking was deemed unnecessary once the soap bubble method
was looked at more closely by Rai.  The piping installation team will be
moving into the vertex today to begin the installation.  We have an
excellent leg up on this part of the installation as the fabrication of
headers and other welded components has already been done as a parallel
task.
 

3.  Cable fabrication is under way for the HEPI electronics.  Once the
needed documentation is complete, we will be able to install in the X
end station.  Most of the electronics is on site, and the remaining
balance is coming this week.
 

4.  Overall, we are slightly behind schedule with the piping
installation, but we have only been using a two man team versus the
three man team that was originally budgeted.  This puts us considerably
ahead of the game so far as cost is concerned.
 
 
 

From Oddvar:
- Followed up on Flex Hoses from Ameriflex for HEPI Installation
- Designed a bracket for mounting the HEPI electronic circuit box for
Rich A
- Bracket is now in production with delivery on Friday Mar. 26
- Designed a seal cap for the four-way distribution valves for HEPI
- Fit-checked the first set of flex hoses for HEPI on the X-end station
- Ordered the second set of hoses for the Y-end station
- Catching up with DCNs for drawings and installation procedures
 
 
 

Safety/security (Rich Riesen)
---------------------------------------------------------------------
This reporting period I have been working on property paperwork,
security issues, and HEPI installation safety. Again I am pleased with
the
safety awareness of all the HEPI installation crew.
 
 

General Computing (Roddy)
---------------------------------------------------------------------
* Most of this week and late last week has been spent supporting the
LSC.  The usual round of network problems and user support have kept me
occupied.
 

* 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.
 

* Helped Doug perform a backup on the CDS system last night.  It was
discovered that there has not been a backup since Dec 30th.  Doug and I
started looking and it appears that there had been >220 MB worth of
changes that have not been backed up.  I will be working with Doug and
Rusyl to come up with a strategy to perform routing backups of CDS in
the short term.
 

* had to update the root hints file on the DNS server.  This was causing
problems for DNS lookups to ac.uk domains.
 
 
 

Vacuum Equipment (M. Zucker for Rus Wooley and Joe Langdale)
---------------------------------------------------------------------
Rus and Joe, with diagnostic support from Rai, successfully completed
the first LIGO cryopump regeneration, on the Y end CP3. After boiling
dry, warming with heated gas, and recooling the trap the base pressure
in the Y end station is substantially lower. We also believe there was a
measurable decrease in the steady-state LN2 consumption. This is an
expected result of cleaning up the trap surface, since the dominant heat
load is thermal radiation; the accumulated ice from 6 years of water
vapor and CO2 was calculated to substantially increase thermal loading.
 
 

CDS support (Ash Khan)
---------------------------------------------------------------------
1) Chiller Communication software:
Tested the new software package, designed to communicate with the laser
power supply and the new chiller. We established that the new Chiller
was
following the setpt commnad issued by the laser for effective control
of the
laser output.
 

Once we calibrate the RTD, the new Chiller can be used to provide the
cooling of the NPRO.
 

2) Provided administrative help to the CDS group.
 
 

E2E Suspension Modeling  (T. Findley, K. Rogillio and S. Yoshida)
---------------------------------------------------------------------
 Previously we were unable to damp our e2e SOS box at the same level as
 our e2e LOS box. Recently Tiffany discovered that the mass of the small
 optic had not been assigned correctly to a variable in an equation
 inside a sub-module associated with the local damping servo. In the
 past weeks, she re-calibrated the local damping gain of the SOS box.
 Consequently, we can now damp the small optic at the same level as the
 large optic.
 

 Using these new local damping gain settings and white noise input to
 the suspension point of the SOS box, we recalculated the transfer
 functions from the suspension point to Position, Yaw, and Pitch
 motions. In addition, using these transfer functions and an actual
 small optic's motion recorded via the DAQ channel, we recalculated the
 HAM table-top motion. The resultant table-top motion shows clear peaks
 at the HAM stack's resonance at 1.45 Hz and 1.6 Hz. Now that the SOS
 box works as well as the LOS box, we can estimate the HAM table motion
 more accurately than before. Using the updated table-top motion and
 local damping gain settings, Tiffany also recalculated the power
 coupling to higher order modes for the output beam of the MMT chain.
 The result indicates that when the SM and MMT optics swing at the
 highest magnitude, as high as 0.4% of the power is coupled into higher
 order modes.

Detector/Technical Support (Coyne)

40 Meter Interferometer (Weinstein)

• The 40m Technical Advisory Committee met on Thursday during the LSC meeting in LLO. Osamu presented the status of the project, as well as Seiji's and Osamu's results on strategies for locking the dual-recycled Michelson. Powerpoint slides are here (8 MB).
• Commissioning (Miyakawa, Vass, Ward, Kawamura): There's been a break in commissioning work while repairing the PSL (see below) and while Osamu is at LLO for the LSC meeting.
• PSL:
• Late last week, Rob and Osamu installed a replacement NPRO (SN 238) in our MOPA laser; our NPRO was showing signs of dying. They aligned it, and tuned up the MOPA by maximizing the output power. They got up to 12.5 watts output.
• Osamu was then able to lock the frequency stability servo, after readjusting the servo gains. He moved on to the mode cleaner, but ran out of time in optimizing the servo before he had to leave for the LSC meeting.
• Four days after installing the new NPRO, it has been showing signs of misbehavior: the power drops to zero for around 10 minutes, then comes back up, and repeats every hour or 2. Osamu will diagnose the problem when he returns from the LSC.
• The HV on the frequency reference cavity ion pump occasionally falls to 0. This is not being monitored by EPICS; Steve noticed it when looking at the controller. Fortunately, the FRC holds vacuum pretty well even when the pump isn't working. Steve and Rob think the problem is with the 24v cable to the HV supply, and Bob will make a replacement.
• Optical sensing (Kawazoe, Sakata):
• Shihori and Fumiko are preparing to install the last EOS, in the SP beamline.
• Shihori is preparing to install the remaining QPD, on the new PO beamline, and to cable up and test the MCT QPD.
• Fumiko is writing up her oplev calibration and noise studies. She is starting to implement and test the oplev servos, and is studying the appropriate filtering.
• Jay and/or Mohana will implement EPICS code to automatically close the mechanical shutters in the event of a vacuum transition.
• Electronics (B. Abbott, Heefner, Taylor, Mageswaran):
• Mohana and Shihori are establishing the alarm limits on all EPICS channels in the EPICS alarm handler.
• The monitoring readout of a couple (at least) of PSL channels (PMC transmitted DCPD and FSS transmitted DCPD) has been misbehaving badly for many months. This does not effect the servos. The cause is somewhere in the electronics rack, and Ben continues to investigate it.
• Digital suspension controllers (Sakata, B. Abbott, Heefner):
• Shihori has measured the damping Q's for the side OSEMS on all of our suspended optics. The poor damping of ITMX side osem servo is clearly observed. Shee will now study the dependence of the Q on the gain, for all OSEM damping servos.
• Dual-recycling lock acquisition (Kawamura, Miyakawa):
• Seiji and Osamu continue to use Finesse to explore how the signals for the short DOFs (PRC, SRC, MICH) change during lock acquisition, in order to develop an efficient lock acquisition procedure. They think they have a path for locking the PRC (l+) degree of freedom; the other two (SRC or ls, and MICH or l-) are proving to be more problematical. Osamu presented these results at the Advanced Optical Configurations group meeting at the LSC meeting in LLO.
• Safety (all): Following through on the remaining action items from the safety inspection of 1/13/04:
• The custodian went through the basic LIGO laser training. The Safety Office has requested that they not switch custodians on us so often.
• All 13 emergency lights in the lab have been tested. Two were not functioning right (the two that were supposedly fixed last month); they have now been fixed properly, and tested.
• All the fire alarms (including the one newly installed in the South Annex clean room) and extinguishers will be tested on Friday.
• All rack kill switches have been modified to provide a continuous ground path.
• All optical tables are being grounded to the vacuum envelope. Not sure whether we should also ground the racks to the vacuum envelope.
• Bob is setting up lockout / tagout systems for all the relevant vacuum equipment. The racks and power breakers are done.
• All crane operators (Steve, Bob, Osamu, Rob) will be trained and certified next Tuesday. Signs listing all certified crane operators, with safety reminders, are now posted on all three crane controllers.
• All 40 Meter personnel will undergo the lab safety briefing (led by Steve) next Thursday. AJW wrote up an evolving document summarizing all the material covered in the safety briefing.
• A follow-up safety inspection has been scheduled for March 29.
• South Annex Bake Ovens (Taylor):
• Bob continues to work on rebuilding oven E and building new oven C. Parts are coming in on schedule. He's now working on the temperature controllers and RGA filaments for the new ovens.

Thermal Noise Interferometer (Libbrecht)

no report

LASTI (Ottaway)

no report

Data Analysis and Computing (Lazzarini)

Simulation and Modeling (Bhawal)
-Mode-cleaner response
------------------------
(Biplab) Interaction with Malik and Rick, the latter working on Mode Cleaner
 at LLO. Generated response functions for Mode cleaners and Pre-Modecleaners
 and identified mode locations in plots.
 

Code development and maintenance
----------------------------------
(Melody) Modeler:
 Working on some enhancements to the FUNC_X code.
 Worked on the FUNC_X technical document.
 

(Ed Maros)
   1. Aided Biplab in getting gcc 3.3.1 and the latest tarball
      distribution onto his laptop.
   2. Corrected link in Download section of e2e to point to the
      latest release.
 

Alfi
-----------
(Melody) Working on using the client system's default editor
  to edit the primitive settings.
 
 

LIGO Data Analysis System
 

Software Systems (Blackburn)
This last week has seen much improvement in the cmonClient as it is
being modified to have faster startup times and well as addressing
several long standing problem reports. It is currently in a stage
of heavy testing before being committed to CVS.
 

Work continues on porting the LDAS software to the Sun compiler. Most
the lower level libraries now compile. Work is starting on porting
the API level libraries. The unit tests have not yet been done. Work
in this area will happen in parallel with the API level libraries.
 

Several problem reports against the diskcacheAPI were closed this week:
 

  1. PR#2369 - closed - diskcache API can over-schedule updates.
  2. PR#2366 - closed - diskcache API reports full update of ::MOUNT_PT
     before entire update cycle actually completes.
  3. PR#2364 - closed - state variable 'seqpt' needs to be initialised
     as early as possible in several places in the diskcacheAPI tcl code.
 

The C++ layer is being modified to address some of the threading issues.
These changes should be ready for inclusion early next week.
 

In the frameCPP library there was a single problem report close;
PR2314 - Add a stream method for the Verify class.
 

With tclGlobus, efforts started on supporting asyncronous callbacks.
 

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

* Got all 40m data out of HPSS.  Now believe that all data has been
copied
  out of HPSS but am doing verification on SAM-QFS side before deleting
  from HPSS.
* Upgraded the 4 T3s in Booth to pSOS 1.18.03 and AE27 disk firmware.
* Got SAM-QFS licenses for LHO's fb1 and samtest.
* Assisted Ben at LHO with upgrade/reconfiguration of T3s and SAM-QFS
  filesystems.
* Rebooted CIT FastIron switch.
* Fixed a bunch of "unstageable" files on ldas-archive--trying to find
  the root cause of the problem.
 

MIT
---
(Keith Bayer)
* Received new 20GB (actually 40GB - cheaper than 20GB's)
  replacement drives for cluster nodes.
* Building new Condor cluster head nodes.
 

Hanford
-------
(Ben Johnson)
 

* Worked with Hari to set up Ganlia a LHO.
* Worked with Dan Kozak to upgrade T3 boot and disk firmwares at LHO.
* All T3's at LHO are now running with hot spares.
* Installed QFS on fb1. As of 3/18 it is now running with a permanant
  license.
* NIS is now running on the LDAS LHO cluster, with ldas-grid as the
master.
 

Data Analysis Activities (Lazzarini)
Shawhan:
 

* Finished bookkeeping for S3 hardware signal injections.  The complete
lists of injections, with the locked segments which contain them, are
at
http://blue.ligo-wa.caltech.edu/scirun/S3/HardwareInjection/ .
 

* Calculated veto efficiency and deadtime for the effect of the POB_I
veto on the final S2 binary neutron star inspiral analysis.
 

* Attended a face-to-face meeting of the inspiral analysis group, at
LSU over the weekend.  Among other things, went over the S2 binary
neutron
star paper draft and plans to complete it.
 

* Attended the LSC Meeting.  Gave a talk about hardware signal
injections
during the S3 run.
 

* Updated four LIGOtools packages, including changes to support Mac
users.
 

Sutton:
I've spent the past week at the Bursts face-to-face and LSC meetings in
Louisiana, so my data analysis activites have been limited to planning
and
reporting rather than doing.  On the planning side, I've been
discussing
verification and validation issues in the Bursts pipelines (triggered
and
untriggered) ahead of the upcoming APS meeting.  There have been a
number
of talks regarding LIGO-TAMA reported at the two meetings, which I'll
arrange to have posted via the DCC when I get back to Caltech.
 

General Computing (Wallace)
MIT:
(Keith)
-Configured CAD desktop for Ken
-Ordered new SB1500's for mailserver replacement
-Tested out SCSI/IDE RAID unit with new firmware & active terminator
 

Livingston:
(Shannon)
* Most of this week and late last week has been spent supporting the
LSC.  The usual round of network problems and user support have kept me
occupied.
* 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.
* Helped Doug perform a backup on the CDS system last night.  It was
discovered that there has not been a backup since Dec 30th.  Doug and I
started looking and it appears that there had been >220 MB worth of
changes that have not been backed up.  I will be working with Doug and
Rusyl to come up with a strategy to perform routing backups of CDS in
the short term.
* had to update the root hints file on the DNS server.  This was
causing problems for DNS lookups to ac.uk domains.
-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.
-Spent a great deal of time with support for the LSC meeting.
-Worked on Pcard program problems.
 

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
- Worked with Caltech ITS trying to fix a pcard software problem.  No
luck fixing the problem so far, looks like it may require a reinstall
of Windows.
- Upgraded a loaner laptop to Win2k and all the latest versions of
application software.  Updated all the drivers and updated the BIOS.
- Started setting up a new Sun Fire V120 server.  This one will be used
as the new license server.  I have 2 more on order to become the new
mail server and new web server.
- Over the weekend I removed the last of the Fore ATM equipment from
the
GC network racks.  I cleaned up some of the GigE wiring and removed the
old fiber and ethernet cables from the Fore system.
- While I was cleaning up racks I also cleaned out the storage cabinet
and bookshelves in the server room.  I threw out old software and empty
boxes.
- Renewing more software maintenance contracts and the contract for the
GigE network equipment.
- Created a couple of new user accounts.
 

CIT:
(Mike)
-John Zweizig's laptop had a hardware failure, this was a video issue.
I
took parts from non-working laptops, to get him back up and running.
-Stuart Anderson; I loaded a new PC with General Computing Software,
setup
network settings and took a ghost image of his computer.
-Mike Smith was having some networking issues that I corrected. His
mapped
drives were timing out on him. I changed that setting from the default
15
minutes to never time out.
-Flavio Nocera, had a hardware issue with his workstation, his hard
disk
died. I replaced the hard disk and reloaded this computer with XP pro
and
loaded General Computing Software and multiple engineering packages. I
also
took a ghost image of this computer.
-This past Monday we came across a live-update issue regarding Norton
anti-virus software, not updating its definition files. I worked on a
few
computers behind this issue, by uninstalling the live-update and then
reinstalling. This approached worked temporarily, but stopped working
again. I then had many users call me on this same issue, which I
suspected
a problem with Symantec's Live-update server. After speaking with Larry
Wallace, he mentioned that this happened before, and it turned out to
be
Symantec's live-update server could not handle the load. Later on in
the
afternoon the live-update software was working again.
-Dorothy Lloyd has been having a problem with PCARD. I spent a lot of
time
trying to correct this. I even called (ITS) on this issue, which they
could
not even figure out.
Larry came to the rescue and successfully corrected this for her.
-HP5000 printer located on the second floor of W/B had a hardware
failure.
The JetDirect card died. I replace this with another card; that I
pulled
from one of our backup printers.
-Updated the firewall software on all NTSRV's and ran windows critical
updates. I also look into the system log files to insure the servers
are
not having any problems. Everything looks OK.
 

(Veronica)
- LSC website: Installed a webpage for March meeting presentations,
posting
them in bulk. The LSC meeting postings were the focus of this week
and the days before the meeting started. Finished and installed a page
for
LSC contacts before the meeting. Keep adding MOUs.
- LIGO website: Updates to several page throughout. Posting Aspen
transparencies. Updates to the roster. Updates to the SURF projects
pages.
Trying to find a way to compress animated simulation videos. I have a
few
which were a part of seminar presentations.
- Project Science: Added several names to the database of contacts.
 

(Lisa)
-Rebuilt a new mailserver and testing it out. It is now time to up the
testing
on the unit to get it ready to replace acrux.
-Misc. user support.
 
 

(Larry)
-Worked a number of purchases. Mostly for other groups. Went over some
maintenance contracts with Dot. It looks like CISCO has problems with
their
records, they sent a number of contracts on equipment that does not
belong to
LIGO.
-Worked a number of DCC issues, most dealing with the LSC.
-Spent time working with the E2E group. A couple of computers needed
to be
reconfigured.
The Linux environment became corrupted for one of the users. Once the
logfiles
were cleaned out for that user his environment started working
correctly.
-Worked a couple of items on the computer room expansion. Still no
definitive
date from PMA on when the work will start.
-We now have a webcam people can check out for meetings. It includes
the voice
module for broadcasting. The main problem with this unit is that it
will only
work with IE.
Did a little more work with the VRVS and still find it to have some
reliability
problems. It still locks up after extensive usage.
-Worked on a number of false alarms with the network. We noticed
performance
issues a couple of times and after a number of tests we were able to
confirm
that the problems were outside our domain. The commercial end of the
network
world has really been getting hammered lately.
-Helped Mike troubleshoot a couple of items.

Advanced LIGO Development (Shoemaker)

In this week I received the invar rods for the cavity and I have tested successfully the blade to suspend the cavity. Moreover I still continue to write the status of this project .

Also in this week we have received the positive replay from SMA about the possibility to make our MH by deposition. They could do that but they don't guarantee the quality of the rim so it is important in the next week calculate the losses in diffraction as a function of truncated rim height to find a compromise if the rim quality is not so good. About the 

possibility to use confocal mirrors we have decided to test both configuration.

In this week I obtained the shape of the flat-topped beam inside a concentric cavity using Mathematica's calculation tools. Than I found the mirror's surface correction in order to support this mesa-beam in the case of the small cavity  DeSalvo's group is building. Now I'm going on with the calculations to obtain the eigenvalues and eigenvectors of this Concentric-Mexican-Hat cavity because this will be usefull to study the stability of this configuration. I asked Enrico Campagna some information about Banch that I will use in the future.

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