The Project Control Meeting
Agenda for Monday May 10, 1999 will be:
(Meeting time: 10:30 am Pacific Time)
Weekly
Report Highlights
Tornado in Oklahoma destroys factory processing
LIGO fluorel items
OSEM diode plans
Bruce Allen and Adrian Ottewill came to invest a week of work into getting
some physics analysis going on data channels and Gabriela Gonzalez,
who
arrived to do some work on suspension measurements, pitched in to help.
Thanks to some early preparation work by Dave Barker, Chris Patton
and Rick
Savage, a workaround was established to compensate for missing hardware.
As expected, a number of "features" were found, but we were able to
see our
microseism through the data system for the first time by week's end
and
As of this writing, Adrian was furiously trying to run a general-purpose
correlation routine to look for any correlations between laser signals
and
the seismometer. After about two man weeks of work, we have some physics
within our GRASP. (Only about 10^2 more PEM channels to go!) Gabriela
and
Fred hope to keep some effort alive on this front. On to band limited
RMS
plots next!
Facilities:
-----------
O. Matherny
Most of the exterior paneling is up on the staging building.------FJR
Bake Oven:
----------
(K. Ryan)
LHO Vacuum Bake Oven A load #29 consisting of elliptical baffle glass,
beam dump glass, elliptical baffle aluminum hardware, two small optics
(glue experiment-Haisheng) and several aluminum shims (seismic leg
elements) was released this week. One piece
of beam dump glass broke
during the bake and an adjacent piece fractured.
I do not believe this
failure to be related to the handling/processing
in house but rather the
result of a preexisting imperfection.
Load #29's release was delayed as the result of an RGA problem that
developed with the recent RGA volume reconfiguration. The RGA's
ionizer
filament along with the electron multiplier bias supply were electrically
grounded. Removal of the RGA was required and the subsequent
rebaking of
this volume caused the delay.
LHO Vacuum Bake Oven A load #30 consisting of 49 kapton cables and
numerous leg element safety pins is to begin vacuum baking today.
Seismic Isolation Installation:
-------------------------------
(C. Gray, H. Radkins)
BSC 7 installation began in earnest this week. So far, actuators and
cross beams have been completed. Dome is off and support beams should
start
going in first thing Friday (5/7). -----FJR
PreStabilized Laser:
--------------------
(Rick Savage)
Optics:
---------------------
(D. Cook & B. Weaver)
LOS:
This week is a continuation of last weeks agenda. I have been working
on
LOS installation documents which incorporate the new techniques for
the
HAM and BSC chambers. I'm hoping to use photographs in them to
better
follow the procedure. The changes include some machining of fixture
components as well. We have made some additional improvements to the
labs
as well. I have also been auditing some laser safety issues and documents.
COS:
This week, I received from the Vacuum Bake Oven the elliptical
baffle glass and a load of beam dump glass. As reported in Kyle's
weekly, one piece of the beam dump glass broke, probably
due to an unseen stress fracture already in the glass. A stress
fracture of the same size, shape, and location was found on
another piece of glass. These fractures are speculated to have
been
placed there during prior handling (i.e. the manufacturer) or in
how the glass was positioned in the bake oven (a less popular theory).
So, of nine pieces of beam dump glass, seven survived. We have
extra pieces of this glass, so we are still in good shape.
While waiting for the hiatus to be lifted in the optics world, I have
also
been assisting the seismic group in their installations for WBSC 7.
Electronics & Electrical Systems:
---------------------------------
(R. McCarty)
This past week we were able to get quite a bit of cabling done.
The Core
Optics Suspension controllers have all been wired to the DCU patch
panel.
This will allow for the monitoring of the coils on the mirrors when
they
are installed.
We also pulled and terminated all the wiring for the microphones.
All we
need to do is finish the wiring to the power supply and hang the
microphones.
Josh also completed milling a circuit board for Kyle Ryan. This
will
allow better monitoring of the bake oven.
Computing Systems:
------------------
(C. Patton)
Worked on the PO for the ATM maintenance contract. Helped with
several
PC User problems.
Beam-Tube Bake Out:
-------------------
(M. Lubinski, M. Guenther, and W. Althouse)
The post bake measurements are complete. Rai Weiss is analyzing
the data
and the results will follow shortly We did find a leak at one
of the
ports X2-3(the valve is currently closed). We are in the process
of
verifying that no other ports are leaking and formulating a plan to
locate
where the leak is at the port and repair it. Sun River has removed
the DC
cables, readied them for transport and they are on there way to Livingston.
We are continuing with equipment removal and processing for shipment.
Beam tube bakeout preparation: This week we packed up four RGA's and returned them to Pfeiffer for overhaul. We put identification signs on the single doors along the beam tube enclosure. (The double door sets were labeled some time ago.) We mounted the circuit breaker panels to five 45 kVA transformers and staged them at ports X-2-2 through X-2-6. We have begun unloading the power supply conex boxes. Two trucks have left Hanford today loaded with power cable. They should arrive at LLO Monday or Tuesday. The insulation contractor has completed the first layer of insulation on X-1 module. He is half done with the second layer of insulation on this module. We continue to order and receive material for the bake-out. (Cecil Franklin, Kerry Stiff)
Electrical installation:
·
·
·
(Rus Wooley, Juilien Svoboda)
Optics and Lasers: Culligan replaced the PVC fittings with PolyPro, and replaced the final mixed-bed filter finally giving the labs 18+ meg-ohm water. We also plumbed the new sink into the drain system and added DI fixtures to the tabletop. Hopefully this is the end of our lab water problems, and after a thorough alcohol wipe we'll clean our first optics (PSL ref cavity viewports) tomorrow, followed by an additional 12 for ISC. Ordered a 600w transducer and UltraSonic driver to excite 20 gal containers; large enough to accommodate a LOS structure. Installed a 150A mig/tig welder in the shop, as well as a shop air compressor and bead blasting cabinet. Added a few pneumatic tools to our inventory for vehicle maintenance. Replaced a leaking hydraulic line on the CASE wheel loader. (Jonathan Kern)
We are currently baking parts for the PSL cavity enclosure. (Tom Evans)
Networking: We have ordered a tape drive for the Suns. We are working on some repair problems on two PCs. (Tom Evans)
Facilities: Coastal Bridge Co has started placing limestone around the end station building. This will provide us with an all weather driveway to the back side of the building for security checks. Construction on the access road is continuing. So far, the weather for construction of this road has been ideal. (Gerry Stapfer)
Weather Station/Suspension Test Stand Software(C code) to convert
data logger format now working on 162. Software(C code and state notation
code) to talk to data logger now working on 162. I now able to read weather
data using VME162. Many checking aspects of program need to still be written.
Program also needs documenting. 70% of medm screen written. Major modifications
to database record including alarms and history function need to be implemented
(20% done). James Finney successfully switched his data format to be sent
once every 3 seconds without impacting our once every second rate. James
Finney says that Site weather data will be available on the Web by end
of this week begining of next. GRASP- 40m tapes
expected 5/7/99. T. evans has ordered on exobyte tape drive that will be
used for reading these tapes (as well as for Sun backup). Efforts underway
to get grasp to understand LIGO frame data. Participated in ASIS telecon
discussing data analysis issues. End to End model -Telecon
meeting with Rick Savage discussing end-to-end model of PSL and its schedual.
(Anthony Rizzi).
Interferometer sense/control (Zucker)
--------------------------------------
Ed Kruzel is at LHO this week working on completing the ISC assebmly
area cleanroom and other infrastructure, some rework on the
RM optical lever, and other tasks.
ISC Design and Fabrication (K.Mason, M. MacInnis)
-------------------------------------------------
The optical levers for Louisiana are being asembled in preparation
for
shipment next week.
Beam propagations for WISCT10, WISCT4, and LISCT4 have been completed.
ISC Design and Fabrication (M. Smith, M. MacInnis)
--------------------------------------------------
Designed and made (Myron made) a new interface plate for the W2K
Recycling miror optical lever transmitter. This will replace
the
current setup that Mike temporarily made while he was at Hanford.
The
new assembly will be light and dust tight, allowing for expansion
without inducing stress on the transmitter. Ed Kruzel will install
it
next week.
Designed and made 2 (Myron made) a support plate to support the laser
for the optical lever transmitter assemblies. This plate can
either be
mounted on the side or the top of the optical lever enclosure during
either shipment or while operating. It is intercahangeble on
both
sides. I will send out the drawing for quote.
#MZ this is to improve strain
relief for the optical fiber joining the
laser proper to the Tx assembly
Originated a riser block drawing for the optical lever transmiters for
the end test masses. They are going out for quote this week.
Assembled 9 photodiodes assemblies to their enclosure and riser blocks.
They need to be tested then sent to Hanford for installation.
ISC implementation & commissioning (N. Mavalvala)
--------------------------------------------------
Assembling hardware and data/publications for measurement of
RFAM from Pockels cells to be done at LHO next week.
Scoping the hardware and software requirements for measuring
the mode matching to the 2km arm cavity using a bullseye
detector.
ISC implementation & commissioning (P. Fritschel)
--------------------------------------------------
o Worked on identifying the scientific goals
of the Hanford 2km
single arm cavity test, as the first step of
determining a
final plan for this test.
o Worked on determining the requirements of the LSC demodulation
boards.
o Started up again with the E2E model of a locally damped optic,
after Hiro fixed some computation problems we had been having.
We now have a working module for a single degree-of-freedom, locally
damped mass that has inputs for the suspension point position and
mass force.
-------------------------------------------
Lasers and Optics -- J. Camp
(1.2.1.1.2, 1.2.1.1.3, 1.2.1.1.4,1.2.1.1.5)
--------------------------------------------
Prestabilized Laser -- Peter King
--------------------------------------------
- The zero length vacuum viewports for the PSL reference cavity vacuum
chamber have finally arrived. The viewports are AR coated for
1064 nm, 0
degrees angle of incidence. These will be scheduled for cleaning
and
baking when possible.
- A Baja4700E is in the process of being setup in the PSL Lab.
It is being
setup to enable constant monitoring of a 10-W laser's (#107) performance.
- Another VCO board is near completion. The board replaces the
one originally
destined for LLO. The completed VCO will be installed at LHO
next week.
Input/Output Optics -- Dave Reitze, UF
-----------------------------------------
Travel plans
Sany Yoshida will be at LHO 10--21 May.
David Tanner will be at LHO 10--14 May.
Dave Reitze will be at LHO 19--23 May.
SOS towers
The six (plus one spare) suspension towers for the LLO interferometer
have
been assembled to test for fit. All went together fine. We plan to
add
part/serial numbers and ship them to Livingston this week, but on account
of
the travel plans, there may be a delay. A new person in our group (Ramsey
Lundock) has been assisting with this
Faraday isolator parts.
The polarizers and wave plates for the LLO in-vacuum faraday isolator
have
arrived in the department.
RFAM measurements.
Analyzed the result of the RFAM measurement made at LHO last week. The
setup is as follows. The light transmitted through the second corner
mirror after the three EOMs is detected by an RF photodetector. The
RF
output of this photodetector is fed to an RF spectrum analyzer. The
DC
output of the photodetector is monitored by an oscilloscope. The spectrum
displayed by the RF spectrum analyzer was monitored for five days.
(1) Long term stability of spectrum
The spectrum observed by the RF spectrum analyzer (dc to 100 MHz) shows
three peaks at 29.5 MHz, 35.5 MHz and 40 MHz. These frequencies are
the
modulation frequency of the resonant sideband, the pre-mode cleaner
sideband, and the PSL AO modulation frequency, respectively in this
order.
Over the measurement period of five days, there is not clear correlation
among these spectra, except when the PSL power became unstable.
This unstable period lasted about 1.5 days, and during this period,
the dc
power monitored after the three IOO EOMs was about 10% lower as compared
with when the PSL was stable (for a couple of minutes, the dc power
was
measured to be zero). Also during this unstable period, the peaks at
29.5
MHz and 35.5 MHz fluctuate in proportion to each other. This indicates
that the sideband generated by the PSL's EOM passes through the pre-mode
cleaner.
Note that the modulation depth during the above measurement was 0.31,
and
that the bias voltage to the photodetector was not correct and
therefore the sensitivity of the photodetector was somewhat lower.
The
DC signal out of the photodetector increased from 2.88 V to 3.16 V
after
the bias voltage was corrected.
(2) RFAM at 29.5 MHz
The RF spectrum after the above mentioned correction of the photodetector
bias shows the peak at 29.5 MHz to be -30 dBm and the background level
(at
the tail of this peak) to be -93 dBm. The RFAM calculated from this
peak
value and the DC output is 5.6e-5. The background level is 10% higher
than
the shot noise calculated from the dc power level measured by the
photodetector.
Core Optics Procurement and Metrology -- GariLynn Billingsley
-------------------------------------------------------------
No report received.
Core Optics Coatings -- Helena Armandula
--------------------------------------------------
No report received.
Core Optics Support -- Michael Smith
------------------------------------
PO TELESCOPE
SORL estimates that polishing will be completed for 6
sets of parabolic mirrors by 5/15. A purchase order has been
let to REO to
make the tooling for holding the SORL primary and secondary mirror.
One set
of HR coated telescope mirrors is expected by the 1st week in June.
Mike S.
has successfully tested a mock up the alignment scheme which projects
an
infrared alignment reticle from an alignment telescope through an 8X
beam
reducing telescope and is aligned to the cross hair of a second
autocollimator at the output of the 8X telescope. Due to the spreading
of
the alignment telescope beam over the large distances in the actual
IFO, a
more intense 940 nm projection source than the present LEDs will be
required.
ETM TELESCOPE
Fabrication of a first article ETM Telescope is ongoing.
CAVITY BEAM DUMP
Paul K. and Craig C. have completed the detail drawings for the beam
dump
support structures in BSC8. Request for quotes for the support structures
will be sent out on 5/7/99. The beam dumps for the second order ghost
beams
in BSC8 will utilize an AR coated normal glass surface. The glass will
be
cut the week of 5/10. A purchase order for the cavity beam dump
assemblies
for all the BSC chambers in LHO and LLO has been let. Kyle and
Betsy have
begun to clean and bake the cavity beam dump glass for BSC8.
VACUUM WINDOW
Helena A. is in the process of scribing part numbers on the windows
before
they are shipped to Jonathan K. in LLO for clean, bake,
assembly, and leak test of the completed window assemblies.
INSTALLATION PLAN
item
completion install
Mode cleaner baffle
done
done
IO baffle
done
done
Elliptical baffle 2KRM, HAM9
done
on hold
Elliptical baffle 2KITMy, BSC8
done
on hold
Beam dump BSAR3, BSC8
6/1
?
Beam dump FMYX, BSC8
6/1
?
Beam dump FMYY, BSC8
6/1
?
Beam dump 4KITMHR3, BSC8
6/1
?
Beam dump 4KITMHR4, BSC8
6/1
?
PO mirror 2KITMx, BSC4
5/21
?
PO mirror 2KITMy, BSC4
partial
?
Beam dump RMHR3, BSC4
?
Beam dump BSHR3P-2, BSC4
?
Beam dump ITMXAR1, BSC4
?
Beam dump ITMXAR4, BSC4
?
Beam dump ITMXAR4, BSC4
?
Beam dump ITMXAR4, BSC4
?
Beam dump ITMyAR1, BSC4
?
Beam dump ITMyAR4, BSC4
?
Elliptical baffle 2KITMx, BSC7
done
on hold
Beam dump FMXX, BSC7
?
Beam dump FMXY, BSC7
?
PO mirror BS, BSC7
5/21
?
PO Tel, APS, HAM10
5/21
?
ETM Tel
in fab
?
--------------------------
Isolation Group -- M. Fine
--------------------------
Seismic Design (Mike Fine)
--------------------------------------
1. Electronics Rack:
Progress is continuing with the 2nd rack assembly. Hytec has
completed
the side panel electronics. The multiplexer is near completion.
They
are working on interior rack assembly this week which will include
installation of the electronics components and cable installations.
The delivery date to Livingston on 6/1 is now iffy; Hytec is due
to give us an estimate for the new date.
2. Fluorel Seats:
Walker & Sons, the vendor we use for fluorine
extraction, was hit by
tornado early this week and the entire plant
was destroyed. At the time
of the incident, there were our Fluorel articles
inside the Walker plant,
either in process or waiting to be processed,
including 2100 LH seats,
850 RH seats, 735 pieces of cable clamp liners,
and a batch of chamfer
stop tips, of which 1200-1300 seats (type unknown)
have now been found
undamaged. And Walker are still looking for other
LIGO hardware. In the
meantime, orders have been placed with Molding
Solutions to replace the
lost items. There will be a schedule hit for
us as a result and the
extent will depend on how quickly Molding Solutions
can ship.
3. Near-Term SEI Hardware Delivery Schedule:
3 sets of HAM springs (Livingston)
5/10/99
1 set of BSC springs (Hanford)
5/10/99
2 BSC Downtubes (Hanford)
5/14/99
Suspension -- (Janeen Hazel/Mark Barton/Mike Fine)
-------------------------------------------------------------------
1. Photodiode:
A meeting was held Tuesday with D. Coyne, S.
Whitcomb, D. Shoemaker, P.
Fritschel and J. Romie about the photodiodes
and LEDs for the sensor/
actuator heads (OSEMs). The conclusion is that
there appears to be
good evidence that the present design is workable
for almost all optics.
The action items include removing the filter
from the present photodiodes
and cleaning them, buying more LEDs and screening
for foggy ones,
buying more photodiodes without filters and replacing
the reworked
ones with the new ones. More testing of the present
components shall
be performed including screening of the LEDs,
testing the linearity
of the LEDs and applying an aperatured shield
to the photodiode to
stop visible light.
2. SUS Hardware Delivery:
SUS Structure Delivery Dates: [numbers in parentheses are quantities.]
LOS1(for ETM, ITM, MMT): 5/7(1)
LOS2: 5/14(1)
---------------------------------------------------------
Detector Systems Engineering -- D. Shoemaker/D Coyne
(WBS 1.2.1.1.9)
---------------------------------------------------------
Global Diagnostics System
(Daniel Sigg, John Zweizig)
This week was spent preparing for the GDS design review.
Physics Environmental Monitor(Matt Smith, David Shoemaker & Alex
Marin)
-----------------------------------------------------------------------
The microphone suspension and bracketry design is complete. Parts
are
out for quote and should be ordered this week.
Placed orders for two tiltmeters(spares), temperature/humidity sensors-
to the particle counters, and Piezoelectric shakers for Livingston.
Received quotes for the computers to the RGA but haven't made a final
decision yet.
More work has been done on the particle monitor design. The part list
and
quotes were asked from various vendors.
Contamination studies (Steve Bell)
----------------------------------
This week will see tests done on the abbreviated cleaning process.
Helena has provided sample mirrors with dabs of epoxy that were vacuum
baked. After cleaning, two will be loaded into Cavity 2 and the third
will be loaded into the Scatterometer.
-----------------------------------------
Control and Data System -- R. Bork
(WBS 1.2.2)
-------------------------------------------
Data Acquisition - Rolf / Alex Ivanov
=======================================
- Continuing work on jdClient and web-based jdClient to produce "designer"
frame
files; should be operational next week. Still need to compile the Apache
web
server to handle both Perl and Java such that the web based unit can
coexist
with the present ilog and other software running on the site CDS gateway
machines.
- Began work on changes necessary to integrate GDS with DAQS; hope
to have
software ready for integration tests at Hanford week of May 16. Note:
Since we
no longer have sufficient equipment at Caltech
for a development system and
Hanford is taking data, we will be logging into
the Livingston system for code
tests, causing that system to go up and down
periodically.
DAQ Antialiasing filter - S. Liu
================================
Preliminary PCB design for the BNC version was routed. The auto routed
board contains too many undesirable features that need to be manually
edited
out. Expect to finish this editing process by next week.
ISC - Rolf
===========
- Preparing change request submittal for additional VME equipment required
for
ISC above and beyond what was in the '94 baseline.
- Spoke with reps from VMIC. They are going to send us a loaner 500MHz
Pentium
III based VME processor board for evaluation next week. We will run
the LSC
servo code as a bench mark, as we are only marginally able to process
this
code
on our present MIPS boards within the required 60usec.
- Arranged teleconference with VMIC engineers on Monday to discuss
best
solution
for transmitting ISC servo information to end stations. Particular
issue is
which of their reflected memory products are most cost effective and
provide
thruput and interrupt latencies with our requirements.
Timing System: D. Ouimette
===========================
The GPS Clock Driver is out for fab. We are making 10 boards initially
to
make sure that we have all of the specifications correct for driving
the
the ICS 110A, 110B and 115A boards. This has been a somewhat trial
and
error process since not all of the information from ICS was correct.
When
all is working we will make a total of 50 Clock Drivers. I have 6 more
Clock Fanouts on my desk ready to test.
LSC CDS: D. Ouimette
=====================
I am checking over the LSC photodiode PCB layout that was completed
by Joe
Suina before he left. I am having to make a few changes as I go. It
should
be done in a couple of days. Part of the process includes ordering
gobs of
parts for this as well as other circuits in the queue. We
are trying to get
as many orders out as possible before the Cal
Tech Dark Ages begin.
PSL - R. Abbott
================
1. Continued installation of PSL at LLO
2. Prepared VCO for installation at LHO
3. Prepared DAQ materials for installation at LHO
4. Worked with vendor on solving problem with AOM for intensity
stabilization for PSL
2K One Arm Operation - Jay
============================
- Completed rack drawings and cross connect lists for Y arm mid station
suspension rack. Documentation sent to Hanford for installation.
General - Jay
============================
- Openned blanket purchase order with circuit board house to cover
baord
fabrication during the finacial dark period.
ASC - Jay
============================
- Continued testing of step attenuators to be used in the new version
of
the WFS
PD amplifier board.
- Completed upgrade of 2K IO WFS demod boards to rev B design. They
will be
returned to Hanford prior to mode cleaner commissioning tests.
Suspension -Jay
===========================
- Completed reassembly of SUS controller test stand at Caltech. Testing
of SOS
controllers for LA has begun.
| CR-990001 | WBS 1.3 | Return Unused Budget for Construction Related R&D to Contingency | P. Lindquist |
| CR-990005 | WBS 1.1.4 | Livingston Site Fiber Optics Cable Installation | F. Asiri |
| CR-990010 | WBS 1.4.4 | Tape Drives for LDAS Hanford and Livingston Observatories | A. Lazzarini |
Assisted the Detector Group with packaging and shipping of parts to Walker and Son (New Castle, OK). Contacted Fed-X and was informed the package was not delivered due to Hurricane. I instructed them to return the package to the sender since the Walker and Son facility no longer exists. Acct 5F511.
Assisted the Detector Group with transportation arrangement for hardware shipping and the preparation of a Purchase Request from Anaheim, CA (Superior Jig, Inc) to Los Alamos, NM (Hytec). Confirmation of delivery was received. Acct 5F511.
Assisted the Computer Systems Administrator with packing and shipping of a Gateway Computer P5-90 (Sn: 3328582) to Livingston, attention: R.Riesen. Confirmation of delivery was received. Acct: 5N511.
Assisted the Detector Group with packaging and shipping of weights to the Hanford, attention: Matt Smith. Confirmation of delivery was received. Acct 5F511.
Assisted the Detector Group with packaging and shipping of hardware to Alameda, CA (Allied Engineering). Confirmation of delivery was received. Acct: 5F511.
Assisted the Detector Group with packaging and shipping of two (2) Sapphire Samples to Stanford University, attention: Eric Gustafson. Acct: 5M501.
From: Sarita Moore<moore_s@ligo.caltech.edu>
Press here for ACCOUNTS PAYABLE HISTORY DATA.
From: Kris Duncan <kris@ligo.caltech.edu>
| Change Request | Description | Amount |
| CR-980035A | WA General Computing | $ 150,000 |
| CR-980036A | LA General Computing | $ 150,000 |
| CR-990004 | LA Site Erosion Control | $ 467,975 (*) |
| CR-990006 | Seismic Isolation System | $ 22,500 |
| CR-990007 | Beam Tube Closeout | ($ 236,000) |
| CR-990008 | VE Closeout | $ 201,916 |
| CR-990009 | Alignment and Control System | $ 61,000 |
Arrangements and plans for bakeout of the replacement Fluorel o-rings is in progress, the initial process qualifying o-ring bake will be started by early next week. Two o-rings have been set aside for this purpose, some of each o-ring will be nonbaked for comparison by R. Weiss with the bake samples.
Revised the LIGO Laser Safety Program document and distributed it for review and comment. Comments and/or recommended changes are requested by 5/12/99.
Revised the LIGO Site Operational Safety and Environmental Protection Manual and distributed hard copies for review and comment.
Updated the Livingston Safety Verification and Tracking Log and mailed
to Gerry Stapfer for his review and concurrence.
Biplab, Matt and Hiro had a meeting discussing the revision of the multi
mode
implementation.
This revision is to stream line the class strcutures related to optics
and fields. Still the
time domain modal model is the base, and the key issue is how
and where various functions go,
like, reflection, propagation, etc. Biplab has reported a new strcuture,
and he will do
further revision before the May 17th meeting.
Adlib : Misc
Digital filter and support routines have been revised. The purpose is
to properly
implement the control system digital filter. A discussion has been
initiated by Danniel suggesting to
use common codes among CDS and E2E for the servo.
Adlib : Mechanics
Giancarlo has sent us a code and mpeg movie demonstrating his mechanical
model
simulation library. The source code, which shows how the modular mechanical
simulation
program works and an mpeg movie are in the e2e
home page, and select "Modaular
Mechanical Modeling"
under "e2e gallery".
Alfi :
Added option for assigning default values for input ports of primitives.
Fixed problem that resulted in segfault when an input port was added
to a box.
E2E : misc
e2e home page has been revised.
* (XH) worked on gds ilwd file
* (XH) studied the best way to insert gds data to database
* (XH) prototyped gds sql statements
* (EM) Worked with Mary and Dave on testing combinations of
genericAPI and metadataAPI.
* (BK) No new progress on the CDS web forms.
* (ML) Worked with Ed and Dave on problem of genericAPI interference
with database open in metadataAPI.
Testing shows that once
database is opened genericAPI
can be loaded and database
commands issued without any problems.
After Dave compiled
genericAPI without object space
library, tested that the "thin"
genericAPI does not interfere
any more with database open. After
discussion with ed, changed metadataAPI
script to open db first
as a global object handle, then
load in genericAPI.
* (ML) Attended technical meetings on metadataAPI interface and
operations scenario.
* (ML) Worked with Xiao on parsing on the new GDS ilwd data file.
* (ML) Build up the metadataAPI scripts. Should make a first commit
by next week.
* (DF) Finished making changes to the internal light-weight data (ILWD)
library to support new tags: external,
lstring, and ilwd.
* (DF) Updated the error reporting mechanism in the ILWD library to
support returning error codes
along with ASCII error messages.
* (DF) Added a Reader class to the ILWD library to enable error recovery
while reading data.
* (DF) Continued documenting the ILWD library.
* (DF) Tested the new thread methods using TCL 8.1 under Linux (it works).
* (DF) Worked with Ed & Mary trying to isolate a problem loading
the
metadata API with the generic
API.
* (PSE) debugged the communications between the manager,
the assistants, and the
frameAPI. Ran the frameAPI
on a Sun machine (propus),
and the manager on the
gateway to the beowulf cluster,
an intel Linux box
(kitalpha). I ran
an automated query from maasim
(my Sun box) which generated
10 queries per second
from the manager continuously
for one hour without
a problem. only messages
were passed, no frames.
* (PSE) discussed issues of LDAS API design with Mary Lei.
* (PSE) built and tested several version of Tcl8.1, and will
be installing a thread-safe
Tcl8.1 on SPICA by the
end of the week which will
be available as the tclsh
program. All other
Tcl extensions and scripts will
be using Tcl8.0.4plus by
default.
Bruce Sears:
* Researching and starting to write prototypes of LDAS User API clients
Reasearching connectionless
vs. connection oriented communications
protocols and learning
how to use a graphical interface builder
tool for java for
use in building a User API client.
Discussions with Roy
about client software implementations of the
LDAS User API.
Starting to compile functions end users will
want such software
to provide.
* Majordomo Research
It appears that Majordomo
would be a useful tool to have up
at LDAS. Planning
on installing this.
(RW):
(1) Completed server for bakeout-RGA data for Althouse
(2) Reinstalled Webbase and bakeout-temperature data after disk crash
E. Maros:
Worked with Stuart to understand what needs to be done to get NIS+
running with
RedHat 6.0.
From Stuart:
Worked on mirroring
and configuring RedHat6.0 to work in the LDAS
environment (e.g., glibc, NIS+).
Updated the 1994 40m frame
data in the HPSS archive to a newer
version of the frame library. Continuing to work with the Potsdam group
to get them the data in a format they can read.
Released the beta version of a software installation tool (sinstall).
Lazzarini: Resumed work on incorporating LSC suggestions on numerical
algorithms
library specification.
Livingston:
Still working the network issue for the fiber installation.
Tom has ordered a 8mm tape drive for the SUN units and is working on
some PC
repair issues.
Hanford:
Worked on the PO for the ATM maintenance contract. Helped with
several
PC User problems.
CIT:
(Barbara)
Made changes to the Amaldi web site, A new introductory page
showing
the poster was inserted before the home page, a couple of abstract
pages
were combined, and some miscellaneous changes were made to the fees,
housing, and program pages. I've found a way to insert the emailed
abstract so they looked like they were entered via the web page.
Expanded the number of "registration states" in the Amaldi database.
Met with Syd Meshkov about the web site for the LSC progress reports.
We defined a number of changes and those are in the process of being
installed so we can get the site up soon for the June reports.
Began work on the new architecture for the web site that will move
bulletin boards and operator logs to the public site and expand public
access to documents.
Looked at 2 tasks related to the bakeout data. The first is to
move the
bakeout data bulletin boards to the ligo web server and the second
is to
see if there's a quick way to re-do the processing so we don't have
to run
a 6-9 hour job each week.
(Suresh)
Completed monthly (April) backup of LIGO servers.
Setup couple of new user accounts.
Replaced bad hard drive of PC used by Bill Althouse by a new one and
installed Windows 98 and other application softwares.
Users support as usual.
Working on changing the e-mail relay services to accommodate some of
the ISP's
being used by LIGO people on travel.
Working on the computer room to accomodate some computer furniture.
Started installation of s/w for the replacement of kater (server used
by CDS at
Wilson house).
Getting new licenses for Cadence and IDEAS.
Have in process the purchase of a new tape robot which we want to check
out
before purchasing a couple more for other areas that need one.
Rita Torres
For M. Zydowicz/W. Tyler distributed for review the LIGO Safety Plan, also sent to reviewers via email. Did edits to Safety Manual, revision 4, now down to 44 pages. Distributed for review.
For D. Coyne and company, coordinated details for the GDS FDR telecon scheduled for 8:15 Friday, May 7th. For S. Whitcomb recreating forms to complete for CRDF, Moscow. The info contained in these forms must be submitted every year and, since the CRDF changed the forms this year, we cannot use the forms we did last year.
Purged more old email files of the sort reported to S. Singh. Suresh made adjustments to my Eudora, I'm now watching to find whether these fixed the problem of repeating messages. So far, so good.
Dorothy Lloyd
Reconciled December-March CA47 Work Order reports. Continued to process heavy load of invoices for payment, and tracked and followed up on various invoice problems. Processed the usual heavy load of POs, reqs, change orders, check request, etc. (for futher details see Cost Schedule Control System Report by Sarita Moore).
Continue to monitor and support the temp.
Irene Baldon
Worked on preparing the paper work for various new trips taken recently (9 Purchase Requisitions and 7 Advance Requests). There are 14 additional new trips in various stages pending completion of travel arrangements.
Still receiving inquiries and requests for travel from LIGO/SURF participants. At the moment I'm working on 1 from Caltech to Hanford, WA; 1 from Caltech to Livingston, LA; 1 from Missouri to Caltech; 1 from Shreveport, LA, to Caltech; 1 from Lyon-Satolas, France, to Caltech; 2 from Leicester, England, to Caltech; and 1 from Belgrade, Yugoslavia, to Caltech, for a total 8 at the moment. The student from Yugoslavia is becoming a real challenge and it is becoming more and more doubtful that he will be able to get out. He has been given a two week delay on his start date. Additional students will be contacting me as we get closer to the start date or they know the dates for their finals. The SURF schedule is from June 14th thru August 20th and many of LIGO's members are acting as Mentors.
Completed 25 Expense Reports, some of which were extensive, involving 2 to 7 pages each. Many of these reports were still not taped or completed by the Traveler, and required additional time for completion. Also worked on a number of problem issues which required a good portion of my time. Received yesterday and late Tuesday, but not yet completed my audit, 22 Expense Reports. These should be completed by tomorrow, barring unexpected delays. I'm holding 4 expense reports which require additional information and/or missing receipts from the traveler.
Completed 3 on 4 Foreign Visitor trips which required extensively planning and coordination as well as the paper work involved for each. One is pending final determination of flights and dates.
Prepared Travel/Vacation Itinerary for the Week of May 3rd, 1999.
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.
Elizabeth K. Wood
Finished up the loose ends from the NSF review.
Brought on board Maria Barnes, a programmer who will be working with Albert's group in Millikan. She lives in room 614.
Brought to the PMA office's attention the desire of Riccardo to have chilled water piped into his area in the Synchrotron.
Attended a meeting with Gary, Ed J., Florence, Dorothy, and Phil L. and APE's Earl Friese and friends to discuss ORACLE's impact/role in the future of LIGO. Many LIGOites at the meeting came out feeling much the same way they did when they went in: unconvinced. We do know, however, that at least one set of Caltech accounts will be working perfectly on the go-live date of July 7. They just won't be LIGO accounts.
Updated the web roster that hasn't been updated since early March. Please take a look and let me know if anyone is missing or is still there who shouldn't be.
In between crises, I've been experimenting with html.
Handled the usual personnel items.
For additional information about this report, contact sanders@ligo.caltech.edu