There was a teleconference on Thursday, August 2, 2001. The following were among the items discussed:

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. . .

Irene Baldon

Processed the paper work for six (6) new trips (including Advance Checks written and hotel/car rental authorizations filled out and FAXed to appropriate vendors in various locations). I have ten (10) trips ticketed awaiting the necessary paper work and three (3) trips in various stages of completion before ticketing can be done. Worked on several trips that were changed or modified and assisted several more travelers with questions regarding their existing or potential travel.
Jim Covington returned four (4) expense reports this week and has two (2) he is working on. I worked on three (3) that were problems and clarified a few more that Travel Audit or the traveler were having trouble with. I completed twenty-five (25) reports and there are forty-seven (47) reports to be done. I'm holding one (1) report that needs a check.
Reconciled forty (40) items on my P-Card which required telephone calls to vendors who do not enter the traveler's name on their charges. Assisted a few travelers with their reconciling and/or data entry.
Worked on the preparation and distribution of the Travel/Vacation Itinerary for July 30, 2001. Performed normal recording and filing associated with Travel and Reimbursement. Also performed miscellaneous duties as requested by various members of the LIGO Project here at Caltech as well as from members of the staffs of each of the two (2) sites. I continue to do MIT's travel to the sites for installation activities and also to assist them wherever possible.

Dorothy Lloyd

Graphic provided by Cindy Akutagawa

Processed the usual requisitions, invoices and receiving on-line. For more detail, see "Cost Schedule Control Systems" report by Esther Cunningham.
Tracked and followed up on invoice problems.
Reviewed and recorded payments processed by Esther the week of July 23.
Continue to monitor contract and blanket order encumbrance and notify task managers when supplements are needed.
Helped Ruth by either "receiving" or "returning" on PO lines to be closed, so that she could re-enter the lines with the new or corrected expenditure type as requested by Cindy and Florence.
Jim continues with data entry in the LIGO database and supports Irene (travel) in the mornings and Linda and Cleveland (DCC) in the afternoons.

Rita Torres

Distributed the approved LIGO Vehicle Usage Policy. Awaiting concurrence signatures from the sites so that I can file with the DCC. Arranged with AT&T for a teleconference on 8/1/01.
Helped Mike obtain toner cartridges as he successfully brought back to life HPcolor2, the color printer on the second floor. Did site trip updates. Placed a few Pcard orders, and reconciled some.
In the process of making labels and other arrangements as we organize things in the BD lab. The objective is to have quickly accessible all tools and supplies needed to do the work.

Elizabeth K. Wood

For the first part of the week, I reorganized a contract that had come from the NSF. It had been typed by no less than two people, possibly more, and was quite an array of different, sometimes incomprehensible, styles. What a delightful way to play with Word for many many many hours.
Attended a meeting with Criselda and other LIGO administrators to get an overview of the pcard travel enhancement. It’s going to be an interesting two months.

Advanced LIGO (Frey)

Quality/Safety (Tyler)

LLO and LHO presented their latest laser safety interlock system details for review and approval at a telecon on Friday, 27 July. Although the two proposed systems are essentially the same functionally, a "common buy" (same vendor) for both sites was not recommended because of potentially higher costs, possible local contractor/labor issues and longer procurement lead times. Questions of potential impacts to the commissioning schedule due to the interlock system installation work were also considered. Each site was asked to submit to G. Sanders a statement regard possible impacts to their commissioning work and installation of the laser interlock system. LLO suggested that they could start interlock system installation at this time since they would be in pump down mode for the next 30 days. LLO was given the go ahead to start system installation now, as long as there was no interference with commissioning work. LHO will update their system proposal as needed and propose a possible (later?) installation start date. Note, the laser safety action item is still not closed since there are other laser safety actions assigned that have not yet been addressed.

The conference room (ECR, SCR and LSR) projector work will begin next week. Although we will attempt to work around scheduled meetings, there may be times when a conference room is not available to "walk-on" use. Please check with Elizabeth Wood if you need a conference room.

LIGO Hanford Observatory (LHO) Operations (Raab)

WA4K is pumping, following repairs. WA2K appears to be locking well again after fix
of deteriorating analog SUS controller board and implementation of a WFS differential
pitch and yaw servo at anitsymmetric port. We suspect our common-mode tidal feed forward
actuation has overcorrected tides by approximately a factor of two; we continue working
to hit tune right before or during E5.

Nathan Hindman joined the operating staff this week. I have submitted below a report from
last week (that did not get passed on when I was overcome by events) in addition to this week's report.

4k Input-Output Optics work
---------------------------
(Corey Gray, Gerardo Moreno, Betsy Weaver, and others)

Our ulitmate goal: match LOS alignment work (utilizing COS laser) with IOO aligmnent work (utilizing PSL laser), close up system, and begin pump down.

The MC is back to flashing, but stability is hard to maintain with doors off and purge air on.

For the LOS alignment, a beam was sent "back" through the RM, off of MMT3 and checked on MMT2. Pitch was fairly close, but we were off a bit in yaw. The beam pointing was corrected by adjusting MMT3 Yaw bias from -0.88 to +0.89. For IOO alignment, the Mode Cleaner was aligned, and the expanded and faint beam from the PSL was pointed onto MMT3 via MMT2. The precision to which this beam was steered onto MMT3 was fairly rough - it is centered to within an inch or so. This beam is very low visability because of how expanded it is, so we've never done much better than this during any of our past alignments. A few exit checks were made this morning, and currently, the doors are being re-installed for a pumpdown possibly later today.

4k Input-Output Optics work (FOR WEEK ENDING 7/26/01)
-----------------------------------------------------
(Mark Barton, Corey Gray, Richard McCarthy, Gerardo Moreno, Josh Myers, David Ottaway, Hugh Radkins, Bartie Rivera, Kyle Ryan, Betsy Weaver, Stan Whitcomb)

Mode Cleaner(MC) and Mode Matching Telescope(MMT) alignment was a major task on the 4k. After some tweaking by Betsy & Mark (MC3 had to be slightly "rotated" within it's wire sling, and the OSEMs were tightened down more), MC3 & MMT1 were given a clean bill of health and re-installed into HAM1. The alignment of the Mode Cleaner was then checked. Miraculously, it looks as though the re-installation of MC3 is good; our previous experience showed a "twisting" of a tower was required at least once to insure an acceptable yaw bias. Once the Mode Cleaner was seen to be aligned, the Steering Mirror, MMT1, & MMT2, were checked. After a few minutes of searching we found a beam on MMT2, ensuring us that MMT1 was re-installed well (and no "tower twist" was required).

When we were happy w/ our alignment, the eastern door of HAM1 was re-installed and IOT1 was re-positioned and aligned to the MC output beams.
This week, we also moved the MC2 tower in the +X direction 6.65mm in order to lengthen the MC cavity to a more acceptable length (MC2 was originally placed wrong through miscommunications of what the length should be).

We are now waiting for a beam through the Recyling Mirror to MMT3, which we will align MMT2.

LIGO Livingston Observatory (LLO) Operations (Coles)

Detector: Optics and Installation: OSEM replacement and realignment of the LLO 4k was completed on Monday. Gary and Harry found a single bad OSEM at the X-end, just before we closed last Friday. It was replaced Monday and everything is under vacuum now. Vertex pressure is below 10^-4 and high-voltage is back on the core optics. The Michelson has been roughly aligned and we see no evidence of the clipping that previously existed in the Faradays. All beams exiting HAM-1 have been checked for clearance at the viewports and have been judged satisfactory. A PO is being processed to install the engineering controls for the Laser Safety Interlock system; material has been ordered and cable installation in the vertex should begin next week. (Jonathan Kern)

We are commissioning the mode cleaner and the recycled Michelson once again. We are proceeding with a series of measurements on characterizing the mode cleaner. These include the mode cleaner length (12.252176 m) and cavity pole(4796 Hz). The mode cleaner test mass Q's were found to be low (between 70,000 and 300,000 instead of 350,000 to 600,000). The reason for this is not presently understood. We now have 1 Watt of power going into the mode cleaner with a stable lock. (Kovalik, Coles)

Investigated depolarization in a half-wave plate, which degrades the isolation efficiency of a Faraday isolator when the half-wave plate is used as part of the Faraday isolator. The investigation indicates that the depolarization is caused by misalignment between the component plates (misalignment in the orientations of the component plates) that the half-wave plate consists of. Based on this hypothesis and taking into account thermally induced depolarization in a Faraday rotator (i.e.,
thermal depolarization in the TGG crystal), calculated the degradation in isolation efficiency due to the depolarization in half-wave plate. It has been found that the isolation efficiency can be degraded as much as two orders of magnitude. The result shows reasonable agreement with experiment. Helped Homer and David with their absorption measurement in a sapphire sample. (Sany Yoshida)

CDS Frame Builder internal disk crashed last week. Also found that one more disk on the D1000 external disk array was bad. Got replacements for the disks from
Hanford and replaced the disks. Also backed up the trend-frames and the minute-trend-frames on tape. Ordered 10 backup tapes for emergency backup
situations. ASC Front End's Pentek #4 in the LVEA is bad. We had two spares of the Pentek sent to us from Caltech, which we will replace as soon as we find a window to stop the asc. Looking for vendors to procure the spare SCSI hard disks for the frame builder and the D1000 disk array.Diagnosed the problem with the Mode Cleaner Wave Front Sensor segment readback. Op-amps in the Demod board needs to be changed. Installing ghostscript and gv on the control room machines. (Chethan Parameswariah)

General Computing: We have received our two Blade 1000s for General Computing. One is set up in the Computer User's Room for general use, and the second is going to become our file server. The first will primarily be a backup for the new file server, but will be available for general use as long as the file server is operational.

We have been discussing the second T1 line with LSU. Bell South has installed the line, and LSU will be here next week to install the routing equipment. LSU is getting specifications on the permanent routing equipment we need to purchase, and they will be installing loaner equipment next week. The second line should be operational by the end of next week, but there may still be some configuration changes after that as we get our permanent equipment.

PEM: Finished preparations for the E5 run. Replaced the LVEA seismometer with the spare seismometer for the E5 run. The LVEA seismometer produces a
peak at about 100 Hz which seems to be a property of that seismometer only. It's possible that the seismometer's masses need to be recentered or that the seismometer is defective. Either way we will have a working seismometer for the run.Reconnected the voltage monitors in the LVEA and the X-end. Reinstalled the microphones at the X-end and Y-end stations. Complied a list of all of the operating PEM sensors. This list is posted to our web page. The link is http://www.ligola.caltech.edu/Operational_PEM.htm Redesigned the LLO seismic reference web page, http://www.ligo-la.caltech.edu/PEM_Ref/seisref/seisref.htm
(Doug Lormand)

Detector/Technical Support (Whitcomb, Coyne)


Installation& Commissioning: Hanford Livingston	Other Science/EngineeringActivities: Design/Analysis/Fab Issues/Concerns

See also the daily electronic logs for the installation and commissioning activities (username: reader; password: readonly):

Hanford Detector Log

Livingston Detector Log

1.1 LHO INSTALLATION & COMMISSIONING

2km

Dennis Coyne reporting:

Despite achieving what seemed to be reasonable cavity-by-cavity alignments, the full ifo showed evidence of alignment drifts and thus would not lock. Several full alignments were attempted, resulting in good and stable alignment and yet the interferometer refused to lock for quite awhile (~an hour), in which time various gain combinations were tried. Finally the interferometer locked with low buildups in the arms cavity (~100). We tweaked alignment while in lock, ultimately raising the power buildup to ~400. It is interesting to note that stable locking 'turned on' without any apparent intervention on our part. WFS investigations proceeded (dithering of ETMs and measurement of transfer coefficients to WFS1).

However work on the WFS system (and commissioning in general) stopped when suspension failures plagued the 2km system. Spent a lot of time trying to get 2k vertex optics fully operational again. The ITMY radically changed alignment, and in fact ASC bias could not change the OPT lever indications. This was traced to a blown PA85 in the controller, with suspicion of some intermittant path to at least one coil (UR). Coincident with this fix, the FMx controller stopped damping. The FMx failure was traced to a blown fuse for the sattelite power.With this fixed the x spot was now returned to nominal at the AS port. However, coincident with this fix, the bias control of ITMY was now gone (similar in symptom with first today).This was traced to a blown fuse on the -24V supply At the same time that the fuse was replaced, the UR coil output was again railed. This was traced to an intermittent connection due to damage in a previous repair.

The wavefront sensor at the antisymmtric port (WFS1) and the one in reflection (WFS2A) were setup to feed back to differential ETM and RM, respectively.

4-k Installation

Dennis Coyne reporting:

Accomplished the re-alignment of the ITMx and ITMy, to reduce the bias control values; The alignment bias values were set on 6/20 by alignming the beam at the mid-station. The only problem encountered was a problem with the ITMy controller.
The vacuum spools are back in and Ham 3 is buttoned up.
The co-alignment of the MC and recycling cavity through the mode-matched telescope has also been completed.
We expect top close up Thursday and start pumping; We should be able to switch off the roughing pumps before the E5 run.

DAQ

Rolf Bork

- We attempted to install an additional new RAID disk on the LHO system to

increase our online data time from 13 hours to 30 hours. However, it turns out

that the new drive (one of four recently received) is not what we ordered and

does not work on Sun stations (all four must now be retrieved from around the

country and shipped back). The only drive unit I have on hand to send up now is

the D1000 that we use on our DAQS development system at Caltech.

Besides affecting the LHO DAQ system, one of the RAID units was shipped to LASTI

for their DMT and is now on its way back. Another RAID was destined to be

installed on the new CDS server at LLO, so that installation will be set back as

well.

- Worked on the ADCU timing issues at LHO (Marka's code on DMT had noticed

that GPS ramp zero crossing on ADCU moved on system reboots, often beyond system

timing requirement limits). The ADCU code has been modified to check the ramp

zero crossing and attempt to bring itself within the required timing window. We

are testing this at Caltech and on three ADCU at LHO. In initial testing, it

appears that we can bring systems with the modified clock driver modules (only

provide clock and trigger to ADC modules, not inter-module synchronization

pulses) into closer time alignment than those using the original clock driver

modules. We verified that even with the modified modules, multiple ADC within a

VME crate remained synchronized to each other.

The DAQ controller code has also been modified to relay the ramp offset times

to EPICS channels, such that they can be recorded in trend frames (This code is

running only on our development system at present. It will be moved to LHO after

E5).

1.2LLO INSTALLATION & COMMISSIONING

Commissioning

Rai Weiss reporting:

Pumping began on the LVEA on Friday July 27 and at the xend on Monday July

30. The y end has been pumping for several weeks.

By August 2 the following had been established:

* all beams have been found: the mode cleaner reflected and transmitted

beams, the Michelson symmetric and antisymmetric, and the pick off beams

from the beam splitter and the input test mass. The transmitted mode

cleaner beam is close to one edge of a viewport but usable.

* All the masses in the LVEA are in their nominal aligned positions with

small bias currents (the mode cleaner, the mode matching telescope, the

recycling mirror, the beam splitter and the itms.

* the mode cleaner is aligned and locked and has sustained 1 watt of input

power

* the Michelson interferometer has been locked and the recycling mirror

has been scanned to show recycling fringes.

The work in the oncoming week will concentrate on measuring the

laser/mode cleaner system frequency and amplitude

noise and in bringing the optical levers into operation.

Peter King

I should be covered by the LLO general entry for this week, for work on getting the modecleaner up and running, re-aligning/positioning of IOT1

2.0 OtherEngineering and Scientific Activities

2.1 Design/Analysis/Fab

Pentiums

Rolf Bork

We received 10 new 1GHz Pentium VME processors last week. These are destined

for digital suspensions, LSC upgrades and spares. Unfortunately, once again,

VMIC improperly loaded the vxWorks boot kernel. All have been returned to the

factory. It turns out these boards also require a new vxWorks Board Support

Package (BSP), as they changed more than just the CPU. We have this now,

compiled and ready to test once we get the processors back.

PSL

Peter King

The free-space propagation of NPRO #170 was measured, after being

repaired by Lightwave (for the second time in my memory).

Rick Karwoski, Paul Russell
Currently we are at MIT facility installing the LASTI PSL electronics. As

of 10:00 a.m. EST, Thurs. the status is as follows:

- All hardware except for the laser power supply has been in stalled in the PSl rack

- cross-connect panel has been installed

- All low voltage Power supplies have been connected to the Euro-crate and are functioning

- Hi-voltage supplies are seated, and functioning.

- Hi-voltage connections to the PMC and Freq Servos have been verified

- The IOC and associated VME modules are situated in the VME crate

- Power has been applied to the VME crate.

- The VME crate has been booted and communication has been established between the frame builder and the IOC.

- Approximately one-half of the internal field wiring (IDC ribbon connections) have been made.

- PMC and Freq Servo RFPDs and the VCO are situated on the optics table.

We will complete the internal field wiring and move on to verify (EPICS-to-PSL

electronics) control signal continuity. We will endeavor to install The

rack-to-table field wiring.

LSC Characterization

Luka Matone

A Matlab model was created to reproduce the filtering properties

measured on the LSC system. The chain includes the Whitening,

Anti-Aliasing, Penteks (ADC/DAC) and the Anti-Imaging boards.

The modeling of each board was created according to the schematics. The

output of the model was then compared to the tf measurements for an

(small) adjustment of the parameters. This was done for the Whitening,

AA and AI boards. The agreement between the model and the measured tf

(for each board) is < 0.5 dB in magnitude and < 2 deg in phase for

frequencies below 7kHz.

With this information, the time delay of the ADC/DAC was infered from

the tf measurement between the Whitening and the Anti-Imaging board.

This measurement was taken with different digital filters enabled (often

none were enabled), with/without the AA on, with/without the Whitening

filter enabled, and with different gains. Good agreement was found

between the model and the measurement if you assume an 80us time delay

between the input and output of the Pentek. The model includes a fixed

stopband at ~6.7 kHz but it is still missing a second stopband placed at

~9.5 kHz.

DMT

John Zweizig

This week I have been installing new software and configuration files in

preparation for the E5 run. I have also written a script that will compare

the data in about 1% of the frame files written by the RDS writer to those

written by the framebuilder at the same time. I have also started a

Histogram comparison monitor which I hope to ave running before or during

E5.

40 Meter Interferometer (Weinstein)

Thermal Noise Interferometer (Libbrecht)

LASTI (Zucker)

Data Analysis and Computing (Lazzarini)

E2E Weekly Physics meeting
------------------------------
Matt Evans talked about the derivation of the elements of the lock
acquisition optical gain matrix, their relative significance, method
of measuring those and how the lock acquisition is studied using Han2k
etc....

Mode Mismatch
-------------
(Biplab) completed validation of mode-mismatch effects in recycling cavity.
After sorting out a few initially-made mistakes in e2e runs and in matlab
code that compares e2e results with analytical derivation, results had
satisfactory matching with analytical approximation (upto 2nd order) and
the good news is that no change (beyond a minus sign bug in convention
encountered during validation of 2-mir cavity) in e2e code was needed.
Next step would be comparison with FFT and actual data to determine if
calculations beyond 3rd order spatial modes would be necessary.

LSC modeling
------------
(Luca) A Matlab model was created to reproduce the filtering properties
measured on the LSC system. More details are in the section of hardware.

Phase map
---------
(Hiro) The measured optics abberation will be included in e2e using mode
decomposition matrices at each mirror. The measurement only covers up to
15cm diameter, while the optics size is 25cm. I have started to explore an
extrapolation method. One is :
(1) use zernike polynomial with normalization radius of 12.5cm
(2) apply Chi square fit to find the weight of each mode
(3) increase the number of modes until the rms or PV of the residual
     variation become less than a given value
(4) characterize the rasidual variation - gaussian with smoothly changing
     sigma
(5) use the data within radius < 7cm, use the fit with radius > 8cm and
     use the region between to smoothly connect those two.

Characterization of the lock time from kinematics
-------------------------------------------------
(Hiro) Based on the discussion with Matt and Biplab, I started to
formulate the lock acquisition time from the seismic motion and a blackbox
lock acquisition system which is characterized by a threshold velocity (if
a mirror goes through a resonance point at a velocity slower than this, a
lock is acquired).

Code development
----------------
(Hiro) low level programming of the simulation engine is still going on,
e.g., the support of "bundle", to reduce the number of lines in box files
to make it cleaner.

Documentation
-------------
(Hiro) working to document the usage of psd primitive.

(Bruce)
Writing skeleton java code for the objects specified in the new Alfi
design documents prepared earlier.

(Melody)
-Worked on a design document for some base classes and interfacing them
with Bruce's design.
-Discussed the Java coding standards with Bruce and decided on a style guide.
-Tried to resolve the performance issues of Solaris system with Larry and Hiro.

Currently there is a limit of 4K+ 10 bytes (imposed by Unix command line limit) for the schema files used for passing parameters. With this limit, it has been decided to limit the value field in the process_param table which receives this data to this size. This means that there will be no need to split an entry over multiple rows in the table.

Documentation continues to be improved. Work has been done on FrameCPP. The installation documentation for framecpp and cmonClient are now being generated correctly. Also, bad hypertext links as noted in the problem tracking system have been addressed and corrected on the development system. A Tcl script is being written to automate the validation of html references. The database web pages have been extended to have static web page for each database to show the table columns.

The cmonClient was presented and reviewed by developers. Many issues were raised and work has started to resolve these issues. Once these changes are implemented, another presentation will be given.

Testing of multi-frame and multi-second frame files has revealed a need for better documentation. Some tests succeeded while others failed.

I coded a program (a mathematica notebook) which computes the sensitivity
of a network of interferometric detectors to coalescing binaries events.
It includes the geometrical specifications for the various instruments and
the design sensitivities, and allows to compute the SNR recovered by the
network as a function of the source position in the sky and its orientation.
It also computes the matrices needed to combine signals from different
detectors into a coherent "network" signal.

I started to work in designing the code for analyzing data from the
LIGO-VIRGO PEM data exchange in search of events: this is work in progress.

Worked on writing an LDAS DSO to run search code for known pulsars
using the LALDemod function.

Attempted to rework the Solaris conv_lpd so that it would
work to convert printers.conf files to printcap format (which is what
it is advertised to do, but it doesn't work). The first attempt didn't
produce a working printcap, but I'm still trying.

T3/QFS/UFS/NFS testing determined that unlinking 8 second
frame sized files on a QFS filesystem occurred at a rate of 71.6
unlinks/sec, which is quite close to the number for QFS+NFS (66.67).

       UFS direct: 140/sec
     QFS direct: 102/sec
     UFS/NFS: 39/sec
QFS/NFS: 38/sec

Earlier results suggested that UFS/NFS write performance might be
better (or at least more stable) when overwriting existing filenames of
the same size, but this turned out not to be true to any great degree.
The range of overwrite performance is 12-24Mb/sec (as opposed to
10-26Mb/sec for creating new files).

Most of the user desktop linux machines have been upgraded to RH7.1.
During this process we got control of the cfdef system. Most of the
def's files have there bugs worked out and now it is time to fine tune it.

All of the ldas-dev Linux machines have been upgraded to RH7.1,
nodes included. (testing still needed to be done) The def files seem to be
close to their final stages. The systemimager program worked! a few minor
glitches (kernel not seeing the network card, getting DHCP to work right,
etc) But this looks good for cloneing 100 nodes.

NCAR visit: Stuart Anderson and Albert Lazzarini visited NCAR to discuss
        mass-storage technology and seek wisdom from this group which
   has been managing large amounts of data for many years. Technical
       points of interest:

Home grown HSM solution, "NCAR mass storage system," for a highly
heterogeneous computing environment.

Approximately 50% of the storage resources are expended in regularly
migrating data to new tape technology.

Redundant copy is stored on shelves with a human tape loader
if requests are made.

Moving from Redwood to 9940 tape technology with no 9940 errors in
the first 6 months of operation of 10 drives.

LTO Ultrium drives manufactured today do not have the reliability
for high duty cycle use.

STK visit: Stuart Anderson and Albert Lazzarini visited the STK facilities
in Louisville, CO to discuss 9840 and 9940 tape drive technology.
Technical points of interest:

9940A supports native Fiber Channel (arbitrated loop) at
60GB per cartridge and 10MB/s native.

The next 2 generations of this drive where combined into
the 9940B which is due out mid next year at 200GB per cartridge
and 30MB/s using the same media as today's version.

     Further upgrades will involve a media replacement and
   long term projections are similar to other tape technologies,
   i.e., DLT and LTO, which plan to put 1TB on a cartridge around 2006.

Re-seated pci cards in SB100
Re-configured D1000 Solstice stripe due to reseating cards
Researched Foundry switch
Cleaned up room (to some extent)
Continuing to monitor temperatures
Contacted MIT networking re speeds:
The only improvements that are scheduled are for
the local subnet 10Mbs switch upgrade to 100Mbs later this summer
connection from subnet router to mit backbone router is 100Mbs
discussion on-going...

1) Finished test the tapecontrol script and ldas monitor client GUI. We
are ready to archive the data from the framebuilder onto the LDAS T3
disk farm at LHO and LLO. This data will then be copied on to tape and
sent to Caltech off-line.

2) I've updated the documentation for tapecontrol for E5. The complete
documentation is at this URL:

OPERATORS: A check list (NEW FOR E5) for operators in the control room
is at this
URL:

Other log files are described in the documentation. Shannon and I will
coordinate the use of T3s during the run and the off-line writing to
tapes.

3) Installation of the HVac system for the LDAS area in the staging
building is about 50% complete.

4) Worked with Robert and Daniel to use the tapecontrol script to copy
the past engineering run RDS data from fortress onto tape.

MIT:
-Setup SB100 for incoming grad student
-Installed Virus software on many PC's!
-Ordered more 8mm tapes
-Troubleshot SCSI bus errors on new raid disk array
-Built / configured SB100s for new grad students
-Investigating cachefs for Sun network
-Sent a few spare keyboards and mice to Caltech.
-Working on logistics for the MDC.

Livingston:
(Tom)
-We have received our two Blade 1000s for General Computing. One is set up
in the Computer User's Room for general use, and the second is going to
become our file server. The first will primarily be a backup for the new
file server, but will be available for general use as long as the file
server is operational.
-We have been discussing the second T1 line with LSU. Bell South has installed
the line, and LSU will be here next week to install the routing equipment.
LSU is getting specifications on the permanent routing equipment we need to
purchase, and they will be installing loaner equipment next week. The second
line should be operational by the end of next week, but there may still be some
configuration changes after that as we get our permanent equipment.

Hanford:
(Christine)
- Preparing additional PCs for the LSC meeting. Two old PCs have been
upgraded to Windows98 and have had Office 2000 Pro, Acrobat, SSH, etc.
installed. Also had to install network cards and setup some portable
computer stands.
- Fred Raab has found a font difference between our install of
Powerpoint and the Ligo presentation template, affecting the bullets.
He thinks he has found which font we need. I will get the font and
install it to see if it fixes the problem. This will be helpful for the
LSC presentations.
- Three wireless Access Points have arrived along with 6 PC cards. I
have received the wireless configuration file from Mikhail Garvey. One
wireless AP will be setup in the staging building, the other two will be
at each end of the main Office building. I'm waiting until the E5 run
ends before setting up the wireless, but they will be done in time for
LSC.
- Lots of activity with the SirCam virus arriving in emails. We had
about 6 or 7 computers receive the e-mail with the virus, but only one
that actually infected a PC. Norton had a fix for the virus which
worked well and saved having to do a rebuild on the one PC.
- The Sun Ultra 220R, Exabyte 215M tape robot, Sun D1000 disk array,
programmable UPS and KVM switch have all arrived for the complete
rebuild of the main file, backup and NIS+ server. The rack to hold all
of this has to be setup and shelfs have to be made. The new server
needs to have SCSI and ATM cards installed. I will be installing the
new hardware next week and will be doing the actual change over the
weekend of 8/18 and 8/19.
- Setup a new account for a new hire. Setup a computer for the new
hire. I have put together a "Welcome" packet of information about the
LHO networks, Common Unix commands, application software that is
available, computer policy, etc. which I hand out to each new hire (or
anyone who needs the information).

CIT:
(Mike)
-Loaded a laptop OS and full General Computing software reload.
-Installed red worm patch on NTSRV's to prevent getting hit by a virus.
-Irene Baldon, hit by a virus W32.Sircam.Worm@mm damage corrupted OS have to
do a full reload.
-Helena Armandula, hit by a virus W32.Sircam.Worm@mm complete reload.
-Rita Torres, hit by the same virus; Symantec came out with a patch for the
W32.Sircam.Worm@mm virus that was successful, but still had to reload win98
on top of previous install to fix some corrupted DLL's.
-Fixed color printer HP1600CM on the second floor.
-Working a complete software load on a new Dell 1.8 GHz for Dennis Coyne.
-User onsite and phone support, which included virus updates and
troubleshooting OS glitches, printer problems and typical office questions.

(Wendy)
- Reloaded a few PCs due to effect of SirCam
- Updated virus definitions and checked for Real-time protection at Wilson
House
- Installed PCard on a computer
- Backed-up a computer onto CD
- Ghosted a few computers
- Scanned Irene's computer for viruses (it was fine)
- Checked on antivirus at Lauritsen (removed McAfee, installed Norton,
updated definitions)
- Fiddled around with duplex printing on the third floor color printer

(Barbara)
- Continued efforts on producing the LIGO roster web page from the Roster
database. This is ready to be installed on Monday. Once the data are
entered, the web page can be activated. Meanwhile I'm working on the
handy, desktop, 1-page printed version of the roster.
- Installed the data-driven web pages for LSC transparencies. This is all
ready for the upcoming meeting.
- Began working with the video camera and RealProducer.
- Set up a sample 2-column web page output for the newsletter and reviewed
with Dave Beckett. The 2-column layout won't work well for a couple of
reasons so I have another idea to try.
- Installed the June edition of the newsletter. Updated Fellowships,
Publications web pages.
- Compacted the DCC databases.
- Helped Ed Chargois with some Access queries.

(Lisa)
- Put the NT servers on the solstice backup. There are still some bugs to work
out.
- Spent a lot of time working on the solstice backup configuration in general.
- Did monthly ufsdump backups.
- Tied up some remaining issues with the new Cadence installation.
- Created a couple of new accounts.

(Mik)
-Completed list of active UNIX boxes
-Assisting Lisa, finished installing ORiNOCO APs in Millikan
-Attended to a number of virus protection issues:
still making sure Norton Anti-Virus is running and configured
correctly on all PCs
-Performed backups of 6 user PCs, burning important data onto CDs
ran scans and removal tools as necessary
-Loaded and set up new PC, including transfer of old data, and printer
setup
-Loaded one PC

(Larry)
-Assisted on working out some minor issues with the upcoming LSC mtg.
-Ordered a couple of new computers. We have a number of old units that are being
replaced. Mike, Mik and Wendy have been handling the s/w installations for the
new units as well as assisting the users in getting files moved.
-Tracked down a problem purchase with SUN, the unit in question should ship this
week.
-Working with Mike, Keith and others on setting up VRVS video conferencing.
Needed equipment has been ordered and some items have shipped to the different
locations.
-Finished installing hardware on the SUNblade 1000's and in the process of
installing the s/w. Checked out the flat screen from SUN and it will be used in
the computer room.
-Resolved some minor networking issues.

LIGO II/Advanced R&D (Sanders)

Working on action items from AdLIGO SUS Costing Meeting, Second Round,
Part 1.
Working on test mass suspension design for 40m IFO.

Riccardo
Compliments for the crew in the synchrotron lab are bouncing from the top.
Work on waterjet cutting going on, 100 micron uniformity achieved.

Mathieu
Discussed wiht Phil, will try to reduce distance of wire from mirror. Tried mirror ear with half prism and half sphere shape. Stress below 1MPa, max stress at boundaries.

Charlotte
Made model of ultrasound cut prototype sapphire flex joint. First resonant frequency at 1.7 kHz. Model of bare flex joint with 2 dof. Stiffness in bending 8000 N/m in one direction, 4000 N/m. Max allowable angles: 0.4, 0.6 degrees. First resonant frequency at 114 Hz. Drawings are needed. Other model with 1 fles + 50 cm rod and 1 flex + rod + flex. Also computing circular flex joint for Virginio to compare with inverted pendulum results. Received AUTOCAD to interface drafting with ANSYS, exchenge doesn't work yet. Probably a plug-in to write in correct (.ides) format to be purchased.

Lia, Francesco
Prepared all metal springs for mounting on totem. Rehearsal of mounting procedure with wedge tightener and hydraulic puller. LVDT coils prepared to be connected. Counting dead and wounded on LVDT driver boards. Started channel repair.

Alessandro
Duplicated TAMA-Hongo system to set up MIMO control. 20 dB more gain is needed at low frequency to measure correctly transfer function with accelerometers.
Leaving Saturday for Japan, will see whether to combine LVDT MIMO as well for the low frequency part.

Weekly Report for Week Ending August 2, 2001

Special Announcements:

LSC Issues (Weiss)

LIGO I Construction/LIGO Laboratory Administration (Lindquist)