The Project Control Meeting
Agenda for Monday May 11, 1998 will be:
(Meeting time: 10:30 am Pacific Time)
WBS 1.1.1 Vacuum Equipment (K. Ryan)
X-arm end station:
Nothing to report.
X-arm mid station:
The chamber support legs are being painted.
Corner Station:
PSI is routing cables from the bake blankets
on the left BT manifold to their controllers and
will begin baking in a day or two. All annulus
ion pumps have been operationally tested.
The
diagonal section has been leak tested. All
VE
components have been roughed down. The bellows
connecting a main turbo cart to the detector mode
cleaner leaked and is being replaced. All
chamber
support legs have been painted.
Y-arm mid station:
PSI has completed the "100 hour pump down".
Basically,
this consisted of using the purge air header to
purge
the VE continuously for 100 hours, re pumping and
taking
an RGA scan. This scan is then compared to the scan
that
was taken immediately after the initial VE bake
out to in-
sure that the purge air system does not introduce
contam-
inates.
Y-arm end station:
Nothing to report.
Livingston (Allen Sibley)
PSI has accepted the alignment monuments at the Y end station and will
use
them for VE setting. We will now remove the original mark which was
not in
the correct location. The X end station is being set now, with an 80K
pump
set and the BSC aligned and being prepared for floor boring.
All major
equipment is in the LVEA and end stations. Only two more truck
loads are
required to complete PSI installation in La.
Crane repairs in La. are in process. Parts are required for repair of
the
mono rail in the cleaning area, and will be in by the end of this week.
So
far we are not impacting PSI, and hope to have these cranes repaired
without delaying PSI.
1.1.2 Beam Tube (L. Jones)
a. Tube section fabrication status, Magnolia
Beach shop
(running totals):
Leak Leak
Formed Tested Failures Cleaned Shipped
as of 4/28: 400
379 0 378 332
as of 5/5: 400
394 0 393 346
The final tube section for LIGO has been formed
and is
progressing through the shop. Shop fabrication
should
be complete this week. One half of the fabrication
crew is being laid off on 5/6. CBI has sold
all of the
fabrication equipment and tools to a local
auction
house; an auction will be held at the shop
in the week
of 6/15/98.
b. Tube section installation
status (Livingston site):
(running totals):
Inside Leak Leak Final
Welded
Repairs Tested Failures Aligned
as of 4/28*:
328 20 326 0
0
as of 5/5*:
343 20 342
0 0
* Includes gate valves
as the finish "tube sections"'
Installation will
be complete when weld, leak test,
and alignment all
reach 404.
A small valve on a type
"H" pump port hardware assembly
was damaged when the field
crew neglected to secure one
of the doors on the field
test enclosure. When moving the
enclosure to the next position,
the edge of the door broke
off the valve neck. An NCR
has been written, directing
replacement from spares,
with an additional leak check.
Turbopumping of the X arm
continues, with the beam tube in
the E-7 torr range. The
initial accumulation has not yet
been made, due to complexities
in tuning the RGA and a
persistent RGA air leak,
which has now been repaired. A
bake of the RGA is being
conducted before the accumulation,
now expected late this week
at the earliest.
CBI has submitted an RFI
requesting a set of drawings of the
GNB valves; these are being
furnished. CBI is particularly
interested in the effects
of the valve internals on module
acceptance testing. Two
of the Livingston module tests will
include the back side of
the valve gate in the tested volume,
which has not been done
before.
There's no further progress
in coring the concrete enclosures
for direct access for GPS
alignment. Of 34 needed on the X arm,
16 have been cored to date.
A TDM has been issued informing
CBI of the repositioning of
interface markers BT/VE1
& 4, at the Y Corner and End Stations,
respectively. The 18 mm
move at the Corner Station is directly
in line with CBI's GPS alignment
from the Mid Station, using
the originally provided
lats/longs for the vertex and arm ends.
The 9 mm move at the End
Station is 4 mm off their GPS line.
A TDM has been issued informing
CBI of the restriction against
fully opening the 44" gate
valves due to a GNB design error.
This will require the use
of a special strut to block closure
of the valves at the Y Corner
and End Stations, since the
mechanical lockout cannot
be used. CBI is required to access
the beam tube through the
gate valves in completing the final
girth weld and baffle installation.
BDF air flow performance
since 4/28:
Particulates (0.5u)/cu ft:
22 (max., any day)
Dew Point, degrees F: 1-5
Temperature, degrees F:
50-64
Of the 341 tube sections
installed, 305 have now been covered
with enclosure sections.
c. Planned meetings:
6/2/98: monthly project status review, Livingston site
7/1/98: Completion Review, Livingston site (performed
early due to manpower availability)
1.1.3 & 1.1.4 BTE and Civil Construction
>>Issues:
1.Hanford Water System Integration: All necessary
documents are in
Caltech.
Request for Quote will be issued shortly.
2.Hanford Final Vane Axial Fan Testing: Actuator
for fan No. 2 was not
operating
properly. Actuator has been returned
to New Philadelphia Fan for repair.
3.Livingston HVAC Chilled Water Coils/Fins Condensation:
Water is blowing
off
horizontal fins past collection pans
and on the floor. Coils were
installed
incorrectly (vertical instead of horizontal).
General contractor has
formally
been informed and has been asked to
reorient the coils per the
manufacturer's
installation instruction and its Mechanical
subcontractor's
responsibility to
correct the problem.
4.Livingston Power Quality: Power quality from
DEMCO looks within
standard
regulation limits. Continuing to investigate
possibility of controller
malfunction.
5.Parsons main office: Architectural, Civil, Electrical,
and HVAC
as-builts
are being incorporated for the Hanford
site.
Floor plan placards being made for each
building at Hanford and
Livingston
sites.
I have been at the Hanford site since Monday to
coordinate and assist in
the
1st Article Testing of the HAM.
Hanford Construction (Otto Matherny)
Levernier
Consolidated Punch List
Total punch list items remaining- 13
Total Corrected-
5
Total Signed off-
5
Other Items
We received correspondence from the
State Health Department
that the membranes for the reverse osmosis
system were not
approved by the National Sanitation
Foundation. New membranes and
housing are scheduled to arrive on site
11 May, 1998.
The vane actuator for fan No. 2 was repaired
and is expected to
arrive on 8 May, 1998.
Livingston Construction (Gerry Stapfer)
There are several issues regarding the completion of the buildings
(Hensel
Phelps)
1. Leaks
There are at least six previously identified and during the last rain
three
additional leaks have been found. These leaks are in the OSB, the LVEA
and
in both end stations. The contractor is working to locate these leaks
in
order to fix them.
2. Water System
At this point we still have no automatic water system. For the past
three
weeks, we have the chiller makeup water "locked out" from our domestic
water supply in order to prevent contamination of the potable water
with
Glycol.
3. HVAC Cooling coils
As summer approaches, the problem with the cooling coils is not getting
any
better. The mechanical room is constantly inundated by water. The frequent
shut down of the HVAC, requiring the manual reset at the power distribution
panel is thus becoming a real safety hazard. Efforts are under way
to
remedy this
and the contractor is working on an interim solution to preclude any
safety
hazard until the coils have been replaced.
Date: Thu, 07 May 1998 18:20:39 -0400
From: David Shoemaker <dhs@ligo.mit.edu>
----------------------------------------------------
DETECTOR GROUP -- Whitcomb/Shoemaker
(WBS 1.2, 1.3)
----------------------------------------------------
-----------------------------------------------
Implementation Group -- Mark Coles/Fred Raab
-----------------------------------------------
40 Meter Weekly Update:
Last week we observed the existence of parasitic interferometer fringes
when
we looked at the SPD with EV and SV mirrors misaligned but the RCM
in normal
alignment. These parasitic fringes may have always been there, but
we hadn't
looked for them before in this configuration. To determine where
this
effect was coming from, we vented the interferometer. (We needed to
vent
anyway in order to realign - see the third paragraph.) We used a PZT
buzzer
to shake the fixed optical components in the vertex area. The mostly
likely
culprit that caused the parasitic fringes is L4, the last lens in the
mode
matching telescope following the Pockels cell. We tried to tilt L4
but could
not because of the consruction of the lens mount, however, when we
removed
and reinstalled L4 the parasitic fringes vanished - probably due to
the fact
that we couldnt re-install the mirror exactly as it was before. (Also,
we
observed that some of the L4 clamping screws were slighty loose. We
tightened these before re-installing and this probably had a small
effect on
the orientation of the lens.) We will check again to see if this effect
is
still there after we pump down again.
We also re-tuned the Pockels cell transformer and we measured the heating
(in air) of the alumina support using an infrared thermometer. There
was
insignificant heating (2-3 degrees F) so this appears to rule out the
hypothesis that the previous Pockels cells were degraded by overheating
with
RF power.
We also needed to vent anyway to re-align the east end following last
week's
earthquake. We readjusted the east end turntable. Also, when we reinstalled
L4, this lowered the beam pointing, so we had to walk the beam and
realign
the whole interferometer. We have now completed rough alignment of
the
apparatus. We will proceed with chamber checkout followed by re-evacuation
of the chamber so we can get back to wave front sensing studies.
----------------------------------------------
Interferometer Sensing and Control -- M Zucker
(WBS 1.2.1.1.6, 1.2.1.1.7)
----------------------------------------------
ISC Design/Testing (Fritschel/Mavalvala)
----------------------------------------
LSC Detection Mode Controls:
An outline of the Final Design document was made. We are writing up
the relevant sections.
Lock acquisition design (Ware)
-------------------------------
I implemented Nergis L- controller in SMAC, then tried to figure out
why it didn't suppress ground noise as it should. I delved into
the
SMAC code to figure out how to derive phase information from the
transfer function function (almost there). I cleaned up a bunch
of
Lisa's Design Tool code to make it easier to understand because I was
making too many errors going back and forth between Design Tool and
SMAC. Also tested some L- controllers which should work better
for
acquisition with ground noise.
Initial alignment system (Mason)
---------------------------------
no report
PNI/mixed signal control test (Fritschel/Daw)
----------------------------------------------
The response of the new mixed analog/digital servo electronics was
tested open loop (from RF in to the output of the un-whitening filter).
The system works as designed. We are now in the process of aligning,
and otherwise getting the interferometer back in working condition,
so that we can try locking it with the new servo.
-------------------------------------------
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)
--------------------------------------------
10 W Laser Contract -- Jordan Camp
------------------------------------
We have received the LW proposal for Service, Enhancement and Production
of Lasers. The proposal is to employ a LW engineer full time, dividing
his
time roughly equally between building 2 new 10W lasers, developing
laser improvements of interest to LIGO, and developing improvements
mutually beneficial to LW and LIGO. The contract is CPFF and would
last
for a year, to be renewed each year. The acceptance testing would be
scaled back somewhat from that done for the LIGO deliverable lasers
but
would still test beam power, shape, intensity noise and drift and beam
pointing drift. We are in agreement with the proposal terms.
The starting time of this contract is contingent upon arrival time of
the
LIGO option lasers, produced under the original LW contract, and is
being
worked out, with an expected start date ~July.
Prestabilized Laser -- Peter King
--------------------------------------------
- A minor 3.8 seismic event threw the PSL out of lock to the reference
cavity. No re-alignment was necessary to get the laser re-locked
to the
reference cavity.
- R. Abbott has worked out a scheme, using a current shunt, to compensate
for the extra poles in the AC current adjust actuator of the 10-W laser
power amplifier. The scheme, is to be tested sometime during
the next two
weeks.
Input/Output Optics -- Dave Reitze, UF
-----------------------------------------
IOO construction
Dave Reitze and Sany Yoshida are at CLEO this week. Discussions were
held
with vendors about parts for the IOO/PSL table.
Mode matching sensor
An apparent mode mismatching in the tabletop setup of the mode matching
sensing experiment has been observed. This mismatch is not expected
because
we have carefully calculated the mode matching telescope. However,
the
reflected beam does demonstrate clearly a "bull's eye mode".
We found the
major cause of the mismatch is a change of output beam waist size of
the
Lightwave (NPRO 126-1064-700) laser after being repaired. The beam
waist at
500 mW output power is 20% smaller than it was before. We also
found that
the output beam waist size, both horizontal and vertical, changes with
output power rather significantly: about a 30% increase from 200 mW
to 650 mW.
Core Optics Procurement and Metrology -- GariLynn Billingsley
-------------------------------------------------------------
Veeco is on schedule for delivery of the IR interferometer. They
have
concrete requirements from us now for the configuration of the computer
they are delivering with the system.
Brian Loucks was at NIST 5-4 to discuss the NIST modifications to the
interferometer mount and tooling. We are having a set made for
the IR
interferometer which is similar to that used at NIST.
CSIRO reports that side 1 of all 2ITMs (ITMs for the 2K IFO) appear
to be
within spec, they have started figuring side 2. This involves
a
considerable effort of measuring both sides as well as the bulk in
order to
have side 2 compensate for any spherical inhomogeneity of the material.
There has been considerable discussion about the method for specifying
side
2 of the beamsplitter. CSIRO has been asked to compensate for
bulk
inhomogeneity in the BS as well, but the method of measurement is somewhat
different than that required for the ITMs as the BS has a different
function within the IFO. The issue is near resolution, the first
3 BS
which have been measured appear to be within spec. CSIRO is confident
that
they can meet the May 31 delivery date.
Core Optics Coatings -- Helena Armandula
--------------------------------------------------
REO contract: Coating calibration runs are underway in preparation
for the
beam splitter development work. REO received 10 COC's from Caltech.
Tooling
manufacturing is in process.
Optics Cleaning Lab.: The lab. has been cleared (furniture, spare equipment,
computers have been relocated, cable trays removed, etc.) to accommodate
the
soft wall clean room and the work bench/sink to be delivered this week.
The
manufacturing of the cleaning fixtures is taking place. A draft for
the
optics cleaning procedure has been generated.
Core Optics Support -- Michael Smith
------------------------------------
PO TELESCOPE:
K. Mailand is incorporating suggestions by S. Whitcomb and A. Lazzarini
for
reducing the weight of the telescope and for improving the mounting
of the
primary mirror. A simplified elevation mechanism is being developed.
A
quotation has been received for a prototype secondary mirror mount
assembly.
BEAM-DUMPS:
A. Badalian has completed the first preliminary beam-dump layout and
mounting structure, for the BD_ITMHR3&4 which is mounted to the
chamber
walls in BSC8. There is a potential conflict with the 2K y-fold mirror
optical lever beam in BSC8, which is being resolved.
ASAP OPTICAL MODEL:
D. Rose is incorporating the detail design and placement of the beam-dumps
into the ASAP IFO optical model.
COS PARTS PROCUREMENT:
Jonathan Kern, an optical specialist, has joined the COS team. He will
be
spending 1/2 time in Pasadena and 1/2 time in Livingston. Jonathan's
primary duties will be procurement, assembly, testing, and installation
of
the COS parts; and technical assistance with the LIGO mock-up.
COS ALIGNMENT PROCEEDURES:
M. Smith has been working on alignment proceedures for the PO telescope
during assembly; and installation alignment proceedures, including
autocollimation equipment needed for the COS final alignment at the
site.
-------------------------
Isolation Group - M. Fine
-------------------------
Seismic Design (Mike Fine)
--------------------------------------
1. Actuator Component Testing:
The load frame has been assembled and the first tests are underway
at Hytec.
The flexural pivot assembly is currently being tested. Hytec has moved
the
flexure tests in front of the scissors table tests so that the results
can
be studied and changes can be incorporated into the design before the
next
purchase is made for two assemblies. The testing is expected to be
complete
by now.
2. Air Bearing Pneumatic Controls:
Hytec is testing a pressure sensor (diaphragm type) and regulator from
Festo Corporation. They have set up a simple test to study the switch
point
of the sensor as well as investigate the fatigue life.
3. BSC 1st Article Assembly:
Hytec has completed the trial assembly of fine and coarse actuator
dummies
and the BSC cross beams. This is part of fit check for the dummies
before
they are disassembled and shipped to Hanford, which is expected to
happen before the end of the week.
Suspension -- (Janeen Hazel/Mark Barton/Mike Fine)
-------------------------------------------------------------------
1. LOS Fabrication:
Brookfield is in the process of shipping the pickled height adapter
to us
today. They're sending the other height adapter to the stress relief
house,
and expecting to have it back and ship it to us by next Tuesday. As
for
the welded structure they're starting the final machining of the chamfer
stop bracket.
2. LOS Fixtures:
Progressive Technology has almost completed a sensor/actuator first
article.
They will Fedex it to Janeen when they are done. In the mean time Oliver
is
in
the process of making first 36 sensor/actutor head assemblies, of which
the
machining of Macor was done earlier by CES. Schober's finally received
the
conductive Teflon stock material and can start fabricating the 1st
article
chamfer stop.
---------------------------------------------------------
Detector Systems Engineering -- D. Shoemaker/D Coyne
(WBS 1.2.1.1.9)
---------------------------------------------------------
Global Diagnostics System
(Rolf Bork, Paul Govereau, Mark Pratt, David Shoemaker, Daniel Sigg)
--------------------------------------------------------------------
Global Diagnostics System
(Rolf Bork, Paul Govereau, Mark Pratt, David Shoemaker, Daniel Sigg)
Software development for GDS continues this week. MP continues
work
on the excitation system and support of the PNI test, DS on the
scheduler and PG on GDS reflective memory organization. DS tested
an
RS232-ethernet cobox and sent it on to MIT for further testing with
an
SRS signal generator.
We held a GDS telecon on Tues. during which we discussed the GDS
current status, timeline and coordination with CDS. DAQS reflective
memory organization is a critical path item for GDS support of
integration at LHO. DAQSC and RM layout should be largely complete
this month. We have abandoned C++ for the GDS search tool.
It would
have been the only real-time process running C++ code and there is
little enthusiasm at CDS to support a C++ development environment for
a single application. Furthermore, RB questions C++ suitability
for
real-time applications. We have scheduled the next GDS meeting
at
Caltech on 27 May, the day after the LSC Detector Characterization
Group meeting.
Physics Environment Monitor (Alex Marin)
-------------------------------------------
All the hardware and software for the DAQ/PC-PEM cart system were received.
The hardware was assembled and installed, as well as the software (LabView
5.0).
We are in the process of checking the system and to write some software
for
the 1st SEI article test.
We are also in the process of investigating the performance of the
Wilcoxon
accelerometers, which look like having better sensitivity than the
Endevco
ones. This brand of accelerometers came into our attention at Mike
Zucker
suggestion. Mike ordered few samples, including one which might become
our
primary candidate.
Optical Contamination (Daqun Li)
---------------------
The Vacuum Safety Board met last week and agreed that the Kapton
has been qualified as an accepted LIGO material. We will move on
this week to retesting teflon.
Work continues to characterize and stabilize the core optics loss
scanner.
Non-Optical Contamination (Matt Smith)
--------------------------------------
Matt hard at work at Hanford.
-----------------------------------------
Control and Data System -- R. Bork
(WBS 1.2.2)
-------------------------------------------
Data Acquisition
================
- Completed and distributed documents for FDR on May 8.
Control Area / Networking
=========================
- In process of installing ethernet cables to connect FMCS into CDS
networks at
Hanford.
- PO for control room furniture at Hanford has been placed.
- Ordered Single mode to Multi mode fiber convertors for Hanford to
connect
Video system at mid/end stations
Suspension Controls
====================
- LOS controller printed circuit board is being manufactured; components
to
stuff boards on order.
- SOS controller in final artwork.
Vacuum Controls
=================
- R. Bork will be at Livingston site next week to finalize setup of
system
for
installation by PSI June 1.
- The data read problem with the gate valve interlock modules, discovered
during
system tests at Livingston, has been found and repaired; modules will
ship
back
to LA today for final tests in system next week.
GPS CDS: D. Ouimette
========================
After several meetings and discussions regarding GPS clock formats
and
clocking schemes
I put together a request for quote and sent it to John Kates of JXI2.The
main points are listed here:
1. The GPS Master will broadcast UTC time to the slave units via IRIG-B
standard protocol.
2. The GPS Master will provide a means of reading the Leap Second Offset
through VME.
3. The GPS Master will have a modified mezzanine board that provides
a very
stable low
phase noise 2^22 Hz oscillator.
4. The GPS Master will provide an output for the 2^22 Hz clock for
a high
impedance load.
5. The GPS Master will provide an output for the 1 PPS clock
into a high
impedance load.
6. The GPS Slave modules do not require the modified mezzanine board.
7. The GPS Master will provide an "In Sync Indicator" that can be read
though VME.
This indicates that the receiver has lock on a satellite.
Our current system design will take the 2^22 Hz clock and the 1PPS signal
from the Master
GPS module into a Master Fanout module residing in the same VME crate.
The
Master Fanout
will distribute both signals to all of the Slave Fanout modules in
the data
acquisition system.
The Slave Fanout modules will distribute the clocks to ADCs and DACs
within
its VME crate.
At startup the system software will read the "In Sync Indicator" bit
in each
of the Master GPS units.
When the Master has locked onto a satellite the system software will
send an
enable to all of the
Slave Fanout modules. This enable tells the fanout modules to output
clocks
within each crate at the
next 1PPS clock edge.
We are also checking with other vendors for alternative solutions. However
we don't have a lot of time
to spend researching this further. We have already done quite a bit
of
testing of the JXI2 modules.
JXI2 has already made modifications to their clock circuitry for us
and they
are willing to make further
modifications to give us a very stable 2^22 Hz clock.
IO CDS: D. Ouimette
=====================
We are continuing to turn out RF Photodetectors. It appears that we
will
make some minor changes to
the design before we go into LIGO production mode. So those of you
working
with this batch please get
your comments back to us. Work on the MC length servo prototype continues.
Preparations for the
IO CDS PDR continues.
PSL
===========
1. The bulk of the week has been spent designing a faster actuator
to
supplement the AC Power Adjust actuator on the Lightwave MOPA.
The circuit
has been designed and an initial prototype has been tested on the bench
with
good results. A full up prototype is now being constructed and
will then be
tested with the alpha laser power supply using a resistive load instead
of
the actual laser diodes. If the results of this test are satisfactory,
a
test will be performed using the alpha laser diodes to verify proper
operation.
The hope of this series of tests is to work around the unexpected roll
off
characteristics of the actuator that came with the laser. It
rolls off with
3 poles at about 20 kHz. If the new actuator proves successful
a crossover
type servo will be employed using the lightwave actuator at low frequencies
and the in house developed actuator at high frequencies.
Input Optics
==============
- Documentation continues for design review May 13.
ASC
======
- Prototype testing using DSP continues; presently waiting for communication
software drivers from manufacturer for high speed fiber link between
DSP
boards.
1. Coordinated updating of MOUs/Attachments list.
2. Coordinated posting of MOUs and Attachments on LIGO Web pages.
3. Dealt with Visitor Program issues, including arrangements for visits
by
Kawamura, Flaminio.
4. Dealt with questions of LSC Delegates, new appointments and
replacements.
5. Dealt with issues relative to 1999 Moriond meeting.
| CR-980007 Rev A | WBS 1.1.5 | Beam Tube Bake, Adjust Budgets to reflect experience |
| CR-980011 Rev A | WBS 1.1.5 | Beam Tube Bake, Electrical Power |
| CR-980012 | WBS 1.1.5 | Beam Tube Bake, Leak Detector, Redundant Valves |
| CR-980015 | WBS 1.1.1 | Miscellaneous Vacuum Equipment Mods to reflect changes to the PSI payment milestones |
| CR-980016 | WBS 1.1.4 | On-site Telephones, Hanford |
| CR-980017 | WBS 1.2.2 | CDS Spares, Suspensions Test Stands, and Travel |
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LIGO QA, with S. Jones and R. McAllister (account manager for Prudential
Cleanroom Services), visited the clean parts bag vendor, BayStat in Menlo
Park, Ca. We met with the General Manager, James Travis and discussed our
interest in their products and what they could provide that would satisfy
LIGO requirements (especially wanted to determine if any of their bag materials
were equivalent to CP Stat-100). This vendor has a very extentsive "bag"
product line. They do both "clean" bags and "commercial" versions with
many materials. Their primary customer base is the computer business with
much of their "metal film" bags shipped overseas. They have two bag production
machines set up in a clean room (Travis claimed it was/is certified as
a "class 100" room) for clean room bag production. Their primary business
is producing and selling lots of "standard size" bags. They're not really
set up for doing "special" especially large, custom order bags. We did
not see how or where Allied's bags were assembled. (LIGO QA will issue
a more detailed report on this vendor in the next few days).
I recommend that LIGO consider this vendor for future purchases of CP-Stat 100 type or other film material bags in standard (vendor's definition) sizes. Large bags may be possible with this vendor, but the cost and schedule may be a problem. Otherwise, I would rate this vendor as "approved" for LIGO use.
1.4.3 Systems Engineering
1.4.3.1 Systems Engineering & Integration (AL, BB, CC, JK, DC)
__Integration Planning: Nothing to report
__Analyses: Nothing to report
__Reliability: Nothing to report
__Integrated Layout/Drawings:
CDI DRAWINGS
Drawings have been released to "A" chg. Minor changes pending.
HAM NOZZLE GUARDS & COVERS
Tentative final drawings have been FTP'D to Rick
Savage. Upon
approval, will send a print set out for local comparison
bid.
ELEVATED PLATFORMS
Other projects has delayed the start of this project.
Anticipate working on this project starting tomorrow
Friday.
Work proceeding on Laser Optic Suspension production drawings. LOS2
weldment top assembly near completion. Lower LOS2 part details
complete.
Assisted ILD updates. Full set of Washington station ILDs are being
revised. A corner station PEM sensor file was received from Matt Smith
for incorporation. The file is corrupt and can't be used, so
the
corner station ILD revision will be held up as Matt is away from MIT
until June 1. Other updates will be completed in the mean time.
__Mock-ups: Nothing to report
__VE Board: Vacuum Review Board met last week to review status of
optical contamination tests. Also reviewed recommendation by Weiss
on
how to measure/scale outgassing tests to LIGO.
1.4.3.3 Modeling & Data Analysis (KB/HY/AL)
* Mode support
The details of the implementation of the mode support is further
discussed, basic class for alignment, propagation of mode expansion
"base" through lenses ( how to trace the change of waist size etc ),
and setting the initial condition of the mode state.
The code development for the mode decomposition for the tilt and
displacement are almost done, in the standard expression and in the
"smart" expression - a.la. A266.
The physics description will be written in one of the e2e manuals
soon.
* Model Validation and Documentation
Validation of the optics part of the model with single mode is being
done systematically by comparing with the Twiddle result. After this
validation is over, e2e can be used in the same way as SMAC.
The documentation writing is going on.
* CPU / Compiler
This week has been mostly spent with the new Alpha. I (Ed) worked with
Kent to get egcs 1.0.2 compiled on the system. Once this was done,
I
ported the e2e software to the box and ran a test. The results have
been compiled into a report which compares GCC to KAI and Sun to the
Alpha/Linux. If anyone is interested in the results, send me e-mail:
emaros@ligo.caltech.edu. It shall become a Tech Note soon.
Some numbers of interest are Machine Ultra2
Ultra30 DEC/Alpha Clock
(MHz) 200 300
600 Speed 1.0
1.8 4.6 here the
speed is a relative performance to complete the given time domain
simulation of an e2e setup (FP+Stack+control), and larger the better.
* Ray Beausoleil
Ray Beausoleil sent a e-mail stating that his development is almost
over, except for a few more tests working together with Daniel. He
will
combine all the latest codes and documentations, physics and coding,
and will send up next week.
* Visitors from UFL
We have two visitors from UFL, S.Klimenko and A.Gorlenko, for a week.
They are interested in using e2e framework for modeling the IOO. We
worked with them explaining the structure of the package and expalining
how to write program which include the simulation of IOO.
KB recalculated the Initial LIGO noise curves for the cases where the
vertex test mass transmissions were (2.5%, 3.0%, 4.8%) at the request
of Stan. For those interested, xmgr files for the results can be found
in ~kent/toStan or you can ask Stan directly.
KB worked with Bruce Sears this week to understand the issues of
network security and the TCL/TK plugin "policies" which manages tclet
security. Based on this study, Bruce has proposed several prototype
client/server applications using TCL/TK, tclets and various other
software packages such as FrameIO and sockets.
KB continued to work on the sockets++ C++ class library. KB found one
other bug in the code but still doesn't have the code running under
LINUX. However, with the arrival of the Alpha Linux box, KB tested
the
code on that platform and was able to produce the exact same behavior
as was seen on the Intel Linux box. On the Sun the code is in a better
working order at this time.
KB carried out several FFT benchmarks on the new Alpha Linux box after
spending a couple of days setting it up with Larry. The performance
of
the box is impressive, though a better C compiler than gcc would be
nice to have. Figures of the results of the benchmarks are being made
up and will be posted for those interested when finished. The alpha
appears not to be optimized in many areas. Stuart Anderson identified
a
performance problem with tar and located a redhat rpm package with
a
patch to this bug. Once KB installed the patch the tar ran 100 times
faster according to Stuart. Stuart remarked as to how many other
performance tunings might be under the hood on the alpha. All in all,
it appears to be a very fast machine, especially when dealing with
large problem sizes.
KB discussed with Bruce Allen his recent experiences with setting up
a
Beowulf cluster at UWM using Alpha Linux boxes. The box we have is
running redhat 5.0 while Bruce's alpha's are running redhat 4.2. Bruce
spoke with a Dec engineer that recommended sticking with 4.2 until
the
5.1 is out. It is expected to be released very soon [AL Note: any
second, now]. Dec also informed Bruce that they are providing for a
team of 3 software engineers to guarantee the success of the redhat
linux port to the alpha.
AL met with Sergei from UFL (see Hiro's report) to discuss UFL
interests in supporting modeling and analysis tasks. Sergei was not
at
the LSC meeting in Hanford and AL described to him the interests of
the
data groups. Sergei is now planning to attend the 26 may meeting at
Caltech as part of the UFL contingent to group II.
AL and S. Tilav met with CDS folks to iron out the GPS timing standard.
This will be presented
at the DAQS FDR.
S. Anderson reports:
I have finished the "1 TB" HPSS test. A few bugs where found and some
of them fixed during the transfer of 1470149787648 Bytes of real data.
From this test it is clear that the current CACR HPSS configuration
is
not capable of meeting LIGO's needs. However, CACR is currently in
the
process of upgrading their HPSS system, being partially driven by the
needs of JPL. It is hoped that by using a few SP2 nodes as part
of the
configuration we will be able to test more realistic LIGO data loads
on
the CACR HPSS system and be able to determine a realistic HPSS
configuration for LIGO.
I have also spent a day working on the DEC Alpha, figuring out how to
get NFS working and why tar was a 100 times too slow. I have not yet
run any meaningful benchmarks, just ramped up the fairly short learning
curve on Linux.
B. Sears(SRL) is doing research of tcl applet use and security for LDAS
remote client system planning prototype of LDAS client/server system.
(see KB report above)
COLLABORATIVE RESEARCH (LS Finn, Mohanty, Mukherjee, Romano)
1.4.4.2 General Computing (LW/TE)
MIT:
1. Continuing to make preparations for the move to the new building.
Hanford:
1. Purchasing Sys. Admin. courses from SUN to do in-house training.
2. We have received notice from U.S. West that they will try and
install the T1 hardware on May 15th. They are currently waiting for
the
transceivers to arrive.
Livingston:
1. All new PCs are installed and working.
CIT:
1. In the process of getting the tape drives fixed (three of them) and
a SUN CD player replaced.
2. Attended the Interop show. The the major things I noticed were:
Large number of companies supporting and selling ATM ;
FORE's 4000 (OC48) unit was very popular;
Network security was well represented;
Wireless networks had more booths than in years past;
Very little in the way of third party products for Novell;
No Apple products to be seen (there may have been
some but I
did not see them);
Video conferencing and services from the big TELCOS
were well
represented
3. Mutliple accounts were added. We have had quite a few visitors.
4. Cleaned up a few more accounts and moved a few more over from the
old system.
5. Multiple PO's for hardware have been placed.
6. We had to fix automount problems on quite a few machines after the
reboot of sirius. Restarting the automount daemon after cleaning out
the auto_direct file cleared up any problems that people were having.
7. Working on moving more computers around. Once again we are short
and
the old ones are having more and more hardware problems. We are
checking on a trade-in policy for the PC's from Gateway.
8. Fixed multiple pc problems. Most dealing with s/w upgrades and
getting the systems stable. Still have a couple that may need to be
rebuilt from scratch.
9. Resolved multiple propert issues with Ed. S.
10. Using WebBase, developed web forms to reserve a new document
number. All the pieces are functioning; now testing the error
routines
by setting up bogus error conditions.- Barbara K.
11. Made a number of web site changes -- added MOU's to PAC4
transparencies page, policy page on conference attendance, another
Livingston restaurant.
12. Continue working on the documentation of the systems. We are at
a
point in-which it has become a high priority item along with the
updated CCB work that needs to be finished on the General Computing
account for CIT.
13. Trying to resolve licensing issues for Island Draw/Paint. We have
had poor response from the support group. I will be going back through
our sales rep to try and get some pressure put on them to respond for
our license requests.
Date: Thu, 07 May 1998 16:55:22 -0700
From: Elizabeth Wood <ewood@ligo.caltech.edu>
Irene Baldon
Arranged and processed the paper work for 11 trips and
prepared the
paper work for 8 trips that still had paper work to be
completed from
last week. Worked on the ever present backlog of Expense
Reports.
Performed miscellaneous duties as requested by various
members of
the LIGO Project here at Caltech as well as members of the
staff of
each of the two (2) sites.
Prepared and distributed the Weekly Travel/Vacation
Itinerary Report
for LIGO Staff and Visitors.
Processed Hourly Payroll, incorporating various recent
changes, new hires
and the processing of Vacation/Sick Leave accounting.
Rita Torres
No Report
Dorothy Lloyd
No report
Elizabeth Wood
Made arrangements for KING-TV (Seattle) to visit the 40M
and Optics and Laser labs testing the equipment for the
Hanford site.
Posted two more positions for the Livingston site.
Made preliminary survey of space requirements and
availability for Bridge Lab.
=========================================================
LIGO Hanford Observatory (LHO) Operations (F. Raab)
=========================================================
General Items:
--------------
Most lab equipment and optical has been ordered and shipments are
arriving daily. The lab optical tables are scheduled to arrive
tomorrow (5/7). It looks like we will meet our goal of having
the
optics lab and vacuum prep and assy. area set up by 6/1.
Arrangements are firming up for the housing of the four summer
REU students. We plan to rent two two-bedroom apartments in North
Richland. The nominal period is June 15th through August 21.
One student, Betsy Weaver from WSU, will work three additional
weeks by starting work with K. Ryan and F. Raab on the new bake
oven on 5/25.
A meeting is being set up between P. MacCalden of Parsons and the
student who will be working on the technical slab performance
characterization, Tanim Islam from Caltech. The goal is to bring
Tanim up to speed on what had been done and what models exist.
A reporter and a photographer from the Spokane-based Spokesman
Review newspaper visited LHO. They are doing an article on LIGO
that is scheduled to appear in this Sunday's paper.
Bake Oven Fabrication:
----------------------
About 60% of the vacuum related parts (i.e. chambers, valves,
pumps, fittings, RGA) have been received. The remaining 40% are
expected to arrive throughout the month of May.
Plans for the non-vacuum related items such as the ceiling
modification, chamber stand and hoist are complete. Fabrication
of the hoist and the chamber stand should begin next week and be
available early in June.
Much has to be done to meet the "first cut" schedule described in
the Detector Vacuum Bake Plan & Schedule (LIGO-M980008-00-D).
HAM First Article Test:
-----------------------
The HAM Mock up will be fitted with leveling feet. The piers
for
the Mock up will be anchored to the floor similarly to the first
HAM chamber.
The procedure for the 1st Article Test will be modified, in that we
will proceed as if working with two "adjoining" HAM chambers;
we
will "thread" support tubes through the Mock up and then into the
actual HAM.
All 16 holes for HAM chamber are drilled and the Hilti inserts and
studs are in place.
The 16 piers on site were machined from an old drawing; because of
this the adapter plate is being modified, and possibly the centering
jig. Hugh has consulted with Hytec about the situation. B.K Miller
is addressing redesign.
Areas in the 1st Article Test Area and outside of it will be
monitored for cleanliness. This data will be used to evaluate need
for floor coatings throughout the LVEA and VEAs.
Determining how to power up HAM clean room--use extension cord or
install receptacle in Test Area.
Beam-Tube Bake Out:
-------------------
(M. Lubinski, M. Guenther, K. Stiff and W. Althouse)
Mark Lubinski is acceptance testing the RGA system at Specialty
Vacuum in New Mexico for most of the week; expected to return 5/11.
Data Acquisition System:
Construction of I/O boxes is complete. Data cable construction will
commence the beginning of next week. Construction is underway of
the analog cables which will be used to interface signals to the I/O
boxes. Data interfacing to the PowerTRAC 3 phase 480 VAC monitoring
blocks has begun. Work continued on refinement of the main operator
screen design, detail screens, and power supply user interface.
For additional information about this report, contact sanders@ligo.caltech.edu