To: weekly@ligo.caltech.edu
From: "Gary H. Sanders" <sanders@ligo.caltech.edu>
Subject: Weekly Report for Week Ending March 17, 1998
Cc:
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Weekly Report for Week Ending March 17, 1998
The Project Control Meeting for Monday March 23 will be replaced by a budget planning meeting.
The agenda for that meeting, and the attendees are:
Agenda:
NSF Review Preparations
OPS/Construction Budget Review
Hanford
Livingston
Detector
Technical/Engineering Support
Campus Research Facilities
MIT
Data Analysis
Director's Office
Business Systems/Administration
Attendees:
Barish Bork Coles
Coyne Lazzarini Lindquist
Raab Whitcomb
Sanders Shoemaker
*********************************************************************
*********************************************************************
WBS 1.1 Facilities Group
From: "gerry" <gerry@ligo.caltech.edu>
Date: Thu, 19 Mar 1998 09:01:28 -0600
X-MSMail-Priority: Normal
X-Priority: 3
WBS 1.1.1 Vacuum Equipment(Worden)
1. Gate Valves:
No news this week.
2. BSC status:
All LA BSCs are ready to ship.
MIT BSC - Bake underway.
3. HAM status:
All LA HAMs ready for shipment.
MIT HAM1 - Cleaning underway.
MIT HAM2 - Last 60" flanges being welded.
4. 80K pumps status:
All 80K pumps are ready to ship.
The Mid station bake is complete and the post bake RGA
tests are complete. Based on these measurements the
pressure is about 7 x 10(-9) torr with ion pump and
80K pumps online. The recorded values are:
AMU Pressure(torr)
2 6x10(-9)
16 1x10(-10)
18 5x10(-10)
28 1x10(-9)
44 3x10(-10)
The contractual requirement is 2x10(-8) torr.
PSI continues to try to clean up their measurement system
as there appears to be some contamination on or near the RGA.
The above results are in good agreement with the 3 cold cathode
gauges which are all reading <2x10(-9) torr.(ionization probability
for H2 is about .5 of N2)
The next tests at the mid station sre the vent/purge/100 hour
pump demonstration.
5. Installation activities:(K. Ryan)
X-end station:
The 44" gate valve controllers are being hard wired.
Grouting of the LN2 ambient air vaporizer and heater
is taking place.
X-mid station:
Same as above for the grouting. The VE between BT
44" gate valves is being pumped by PSI (10-7 torr).
Corner Station:
Same as above for the grouting. All remaining annulus
ion piping is being installed as are the remaining purge
air header piping, roughing header piping, pneumatic and
water lines along with misc. electrical.
Y-mid station:
Same as above for the grouting. PSI has left their RGA
installed and is planning on re baking it before moving it
to the end station. It had shown the presence of AMU 19
whose partial pressure was not effected by the total pressure
in the RGA. This appears to be local to the RGA itself and
not the VE and a re bake while pumping with a 250 L/s pump is
hoped to remove it.
Y-end station:
Same as above for the grouting. The bake blankets are
installed on the VE and heater/thermocouple wiring is
being routed to the bake controllers.
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 3/10: 311 288 0 284 221
as of 3/17: 327 301 0 301 238
b. Tube section installation status (Livingston site):
(running totals):
Inside Leak Leak Final
Welded Repairs Tested Failures Aligned
as of 3/10*: 220 16 220 0 0
as of 3/17*: 234 17 233 0 0
* Includes gate valves as the finish "tube sections"
The additional inside repair was required by a failure of
the orbital welder, causing a small burn-through when the
weld head stopped. The entire welder was changed out.
CBI has submitted a change order request for performing an
air signature accumulation test of the full X arm on a
weekly basis; this is being evaluated.
All pump carts (6) are now installed on the X arm modules
and connections are being leak checked. Pumpdown is not
expected to start until the week of 3/30. Some difficulty
is being experienced in getting a gate annulus seal at the
X1 corner station termination gate valve (a LIGO function).
The Balzers/Pfeiffer tech expert has delayed his trip to
Livingston due to problems experienced in testing a potential
substitute system for the RGA network hubs. The new schedule
is TBD.
BDF air flow performance since 3/10:
Particulates (0.5u)/cu ft: 39 (max., any day)
Dew Point, degrees F: 0-3
Temperature, degrees F: 42-60
Of the 232 tube sections installed, 199 have now been covered
with enclosures.
c. CBI has submitted a change order request claiming that the
leak locating efforts on the Y arm at Hanford (which later
turned out to be unnecessary) were beyond their scope and
therefore require reimbursement. I've asked for more detail
for their basis of the "beyond scope" claim.
d. Planned meetings:
4/16/98: monthly project status review, Livingston site
1.1.3 and 1.1.4 Civil Construction (Fred is still on vacation)
Hanford Construction (O. Matherny)
Levernier
Consolidated Punch List
Total punch list items remaining- 58
Total Corrected- 35
Total Signed off- 35
Concerns
HVAC
We have several options to change the actuator
motors on the HVAC dampers. The two favorable
options are an air cylinder or a gravity
damper.
Parsons is in favor of the air cylinder actuator.
It is possible that the gravity damper would
produce substantial noise.
The cost for the air actuators is approximately $8K.
FMCS
It appears that the cost for the FMCS modification
will cost approximately $25K.
Livingston Vavuum Equipment (Allen Sibley)
The annulus piping has been installed at the mid and corner
stations.
Mid Station
The 48" valve at the mid station is in the open
positions and the tube at atmospheric pressure. Under these conditions
the we can not perform a leak
test on the gate annulus piping. A discuss was had with Brad
Shaw (CBI) to determine if the valve should be closed for
testing. We agreed that the probability of a leak is small
and if one exist it can be easily repaired after BT pump down
by closing the valve.
Corner station
We have discovered a potential problem with the corner station gate
valve. The gate annulus will only pump down to a pressure of 10-3 torr.
All exterior annulus piping has been leak checked and
tested good. The problem apears to be in valve seal. We have discussed
the problem with CBI and are investigating further.
Livingston Construction (Gerry Stapfer)
WEATHER: The site has received 3 inches of rain during this period.
HENSEL PHELPS
--Working on punch out items around site facilities.
--Punching out in all areas except site finish. Completing punch out at
the Arm 1 end station and at the mid stations.
--Started work on the BT overpass.
2.0 WOODROW WILSON
--Installing seals at the beam tube enclosures at the corner station and at
the Arm 2 end station.
--Installing doors and frames at the service entrances along Arm 2.
--Caulking around, grouting underneath and patching bug holes in the
installed BTE's along Arm 2..
COASTAL BRIDGE
1,959 BTE's have been cast , 1290 BTE's approved and 1290 BTE's installed
.
Landscaping
The contractor has completed the bed preparation and has started the
planting of the shrubs and trees. He is strongly recommending that an
irrigation system be installed to maintain the plants in good shape. We
have asked him to submit a cost estimate for such a system.
Date: Thu, 19 Mar 1998 15:43:33 -0800
From: stan@ligo.caltech.edu (Stan Whitcomb)
Message-Id: <199803192343.PAA14238@ruchbah>
----------------------------------------------------
DETECTOR GROUP -- Whitcomb/Shoemaker
(WBS 1.2, 1.3)
----------------------------------------------------
*************SEW adds:
With the facilities construction starting to wind down and the beam
tube installation in Louisiana in smooth operation, Fred Asiri and
Larry Jones have started to help the Detector effort. Fred is taking
responsibility for HAM Seismic isolation First Article test in Hanford,
and upon its completion, will continue with the installation. Larry
will begin to assist Dennis Coyne as his deputy, working a wide variety
of fabrication and installation issues. We should all be pleased to
gain two such experienced and capable people.
**********************
-----------------------------------------------
Implementation Group -- Mark Coles/Fred Raab
-----------------------------------------------
40 Meter Status Update:
Following the pump down of the system last week for replacement of the
Pockels cell, we are now investigating the performance of the power recycled
Michelson. We are operating the RF source with an external RF oscillator,
since the Pockels cell and matching circuit are now at a frequency slightly
below where we were with the failed cell that was replaced. The alignment of
the interferometer changed quite a bit because of the vent, so we have been
realigning the system. As noted last week, we realized that we had not
properly factored in the Pockel cell response to frequency when we
originally tried to measure the recycling cavity length (to determine if the
recycling mirror had
been placed in the right spot). We are still investigating this issue.
----------------------------------------------
Interferometer Sensing and Control -- M Zucker
(WBS 1.2.1.1.6, 1.2.1.1.7)
----------------------------------------------
Interferometer sense/control (Zucker)
-------------------------------------
Zucker, Mason and McInnes participated in the Integration meeting last
week at LHO. Picked up lots more work to do.
On the way home MZ loaded need dates for ISC equipment from master
Integration Plan (D. Coyne) into ISC schedule and sequenced
procurement, fab and assembly to successfully meet WA 2k dates (on
paper at least) with available staff and estimated purchase lead
times. Still working on data entry for LA4k and WA4k deliverables. On
return to MIT received final BAFO quotes for ISC viewports, selected
vendor and issued requisition to cover the 2k interferometer (incl.
those for IO plus spares). These ports could get on the critical path
if PSI leaves the diagonal section early (which we hope they will);
thanks to Ed Jasnow for greasing the order.
ASC initial alignment (MZ for K. Mason)
---------------------------------------
Attended integration meeting at LHO. Met with Rogers Surveying to
contract for monuments to support installation alignment of core optics
at Hanford; also marked off wall penetrations in VEA/LVEA for beam tube
parallel transit shots required for primary alignment reference.
Resolved several interference issues between electrical conduits
for VE and ISC equipment stayclears (vigilance is still required!).
Completed final layout for optical lever projection and receiver
optics (incorporating updates from first article test program);
now detailing fab drawings and bills of materials.
ISC Design/Testing (Fritschel/Mavalvala)
-------------------------------------
LSC Detection Mode Controls:
The closed loop response of the mode cleaner frequency output to mode
cleaner length changes and to additive offset of the mode cleaner error
signal were computed last week. These have now been incorporated in the
LSC common-mode servo model to properly account for the dynamics of these
frequency correction inputs. Debugging of these extensions is underway,
initially with an open loop model (to circumvent Simulink glitches).
ASC Prototype Bench Test:
The homemade piezo driver for the the tip tilt actuator was completed and
tested. Lori is now diagonalizing the actuator tip and tilt axes and will
then calibrate the actuator using the already calibrated quadrant
photodetector.
Other ISC Design (Fritschel)
----------------------------
o Continued working on a document defining the test points in the
ISC & IO digital servos and how they interface to the DAQS & GDS.
LSC Lock Acquisition (Ware)
---------------------------
{no report received}
LSC Photodetectors (Marin, Csatorday)
--------------------------------------
Mike Z., Peter C. and Alex M. presented at the LSC meeting in Hanford,
the summary of the PD selection and measurements process. This work
obtained new and significant results on the
various PD behaviour at high light power exposures, as well as the RF
frequency
responses. The present candidates (in our order of preferences) are diodes
manufactured by EG&G Canada, Hamamatsu and GPD. The remaining search is
related to the PD behaviour in the conditions of accidental unlock of the
IFO, in which, simmulations shows that almost all the 2-3J energy accummulated
in the IFO will be dumped into the dark port in a short period of time. For
such tests, a powerful IR source is required. This problem will be studied
with the options of having the PD current switched OFF and possible with
a fast shutter which will cut off the light to the dark port table.
The Stanford group presented preliminary results on a new high power
photodiode, which might become a candidate for the LIGO PD. The possibility
to colaborate on this issue was discussed.
#MZ note: Wonill Ha, from Prof. Harris' group at Stanford EE,
has fabricated a spectacular InGaAs device. We want to help
bring it to commercialization; evidently Hamamatsu has also
expressed interest.
Phase Noise Interferometer/Digital Closed-Loop Test (Fritschel, Daw)
---------------------------------------------------------------------
o We corrected the tilt problem of the Michelson optics table mentioned
last week, by adding shims (~0.5 mm) on top of two of the STACIS feet
that support this table & stack. As desired, this resulted in the suspended
optics returning to very close to their initial positions (with respect
to their support structures) when they were first installed. We expect
this will fix the orientation instabilities we were seeing with one
of the Michelson mirrors.
o Digital loop test: Ed Daw & PF completed a set of measurements on
the Pentek ADCs, feeding into it random noise having a spectrum that
approximates the spectrum of the sampled signal during closed loop
operation. The basic result is that at a 16kS/s sampling rate, the
noise from the ADC is approximately 10 microvolt/rtHz. This is the
same level that was measured earlier by Jay using a full-scale 1kHz
sine wave input.
#MZ note: this addresses a significant worry, since various
common ADC imperfections can in principle bias the apparent
SNR higher or lower depending on the test waveform. The
Pentek 6102 is now fully out of the woods.
-------------------------------------------
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 are waiting for Lightwave feedback on the proposed service contract,
expected in the next week or so.
Prestabilized Laser -- Peter King
--------------------------------------------
- R. Abbott examined the mechanical resonances of the pre-modecleaner (PMC)
body. This was done by driving the PZT actuator and placing a microphone,
whose frequency response was flat out to 20 kHz, against the body of the PMC
and looking at the output of the microphone on a signal analyzer. A
resonance consistent with the first mechanical resonance of the PMC body
was evident using this technique. Attenuating the longitudinal motion of
the PMC body by compressing it between two sheets of neoprene did not
result in a significant change.
- R. Abbott, J. Heefner and L. Wallace have been trying to get the VME
interface for the PSL up and running. For reasons unknown the VME module
does not boot when told its assigned IP address. However the module
functions when assigned an IP address of an already existing module. Each
time that a new client is added to the CDS server, the module fails.
- L. Cardenas has been fitting magnetic switches to the doors of the
optical table enclosure. The switches detect if a door has been opened and
an LED lights up to indicate that a door has been opened.
Input/Output Optics Design -- Dave Reitze, UF
-----------------------------------------
The Ufl. group is preparing for the IOO FDR on Mar. 25.
Core Optics Procurement and Metrology -- GariLynn Billingsley
-------------------------------------------------------------
We are still missing some homogeneity data files from Corning, as well as
one final piece of glass.
CSIRO has ITMs on the Teflon polishers and BS on pitch polishers for
initial figuring. Having looked at the homogeneity through the material
they feel that they should be able to figure side 2 of each substrate to
compensate for spherical material inhomogeneities and therefore make each
side 2 appear optically flat in transmission.
We have no word yet on delivery of the reference flats for the IR
interferometer.
NIST reports on the Pathfinder piece 005 coated at REO and annealed. The
change in rms surface errors is .15 nm from .40 nm uncoated to .55nm
coated. This is on the order of the measurement error. The final coated
optics should be less than .8nm, it appears that we will be comfortably
within our specification after coating.
REO reports that they should be able to do 4 optics per week if everything
goes right with the chamber. A visit to discuss the specification and
statement of work for the production coating is scheduled for April 8.
Phase shift reports a 3 month slip in the expected delivery of the IR
interferometer, a substantial impact to the COC schedule. We are looking
at other options.
7 of the 8 Heraeus COC witness samples have returned to LIGO from testing
at VIRGO, these will go on to Stanford for further measurement.
Preparation for the COC FDR continues.
Core Optics Support -- Michael Smith
------------------------------------
COS PDR:
The COS PDR was successfully presented, and the noted Action Items are in
the process of being completed.
Integration Meeting:
I attended an ILD working group meeting on 3/10-11 at the Hanford site.
Integration and alignment schedules were discussed. The COS vacuum windows
are a critical path item. Individual discussions were held with ISC and SUS
regarding the commonality of alignment proceedures, fixturing, and
equipment handling resources.
-----------------------------
Isolation Group -- M. Fine
(WBS 1.2.1.1.1, 1.2.1.1.8)
-----------------------------
Seismic Design (Mike Fine)
----------------------------------
1. Spring Manufacturing:
The first batch of 19 springs has been leak-checked. All passed, the test
conditions were: 5 hours at 40 PSIG, then the chamber is pumped down to
1.2 X 10-9 tl/s ("background level"). KTI is now welding 36 springs that
they have received from Pegasus since last week.
2. Actuator Component Testing:
The test fixture design has been completed. The scissors table test
fixture, instrumentation and connection hardware has been ordered. The
scissors table test fixture has a 3-week lead-time. The dial indicators
arrived at HYTEC last Wednesday. The load cells are expected next week. The
load frame and other components are currently out for bid, which are
expected sometime this week. PO's will be placed shortly thereafter.
3. Coarse Actuator Components:
The air-bearing prototype is expected to be completed at the end of March.
Prototype testing is planned to validate the design. A HYTEC
representative will witness this. The prototype testing will be useful in
ensuring that all of the right questions are asked at the acceptance tests.
Production of the 1st Article phase will begin immediately thereafter.
The bearings are still on target for a May 13th delivery.
4. In-Vacuum Aluminum Hardware:
The final Drawings were released to Allied last week. Allied is now working
on the fabrication.
5. In-Vacuum SST Hardware:
The mass elements are complete with the exception of cleaning. The support
tubes for the HAM has been final machined. The BSC support tube is still
awaiting shipment of the tubing from the manufacturer.
Suspension -- (Janeen Hazel/Mark Barton/Fred Raab/Mike Fine)
------------------------------------------------------------
1. LOS Fixtures and Components:
A kick-off meeting was held at Schober on Monday, 3/16. Janeen has prepared
and sent IGES files to Schober and is working out some glitch on IGES with
Schober engineers.
2. Sensor/Actuator Head:
Requests were sent out to 13 vendors to solicit their interest in
machining Macor. So far we have received 3 positive responses, 2 no-bids
and 1 quote for the spacers only.
3. Alignment Fixtures:
Alignment fixture drawings are being reviewed by Ken Mason and Janeen.
---------------------------------------------------------
Detector Systems Engineering -- D. Shoemaker/D Coyne
(WBS 1.2.1.1.9)
---------------------------------------------------------
____Detector Integration
Held a meeting 3/10 at the LHO to review the optomechanical and
equipment arrangement Integarted Layout Drawings (ILDs) with IO, ISC
and COS. Will initial release (rev A) these drawings within the next 3
weeks after appropriate action items are completed.
Held a project-wide integretion meeting 3/11 at LHO to review
integration planning, source data (deliverables & schedule) and the 2km
IFO schedule (i.e. the first interferometer to be installed). Minutes
for the meeting, including action items have been distributed via email
and are also available on the integration web page:
http://ligo.caltech.edu/~coyne/index.html
A draft of the LLO 4km IFO schedule is nearly ready to be distributed;
an email will announce it's availability on the integration web page in
the next day or so.
Physics Environment Monitor (Alex Marin)
-------------------------------------------
Working questions on parts of subsystems, loose ends uncovered during the
Integration meeting and followups.
Optical Contamination (Daqun Li)
---------------------
LEDs and photodiodes were taken out of cavity one since they have
qualified optical contamination testing (detailed technical report
can be found at /home/dli/document/op-con.fm). Next materials for
testing are Kapton ribbon cables and D ribbon connectors and they
have been loaded into cavity one, outside the spacer but facing directly
to the vent holes of the spacer at the output mirror end. The cavity
is under vacuum pumping. As for cavity two, the NPRO was degrading in
terms of power output and therefore it was replaced with a newly
repaired NPRO recently arrived from Lightwave. Optical alignments
for both cavities are underway.
Non-Optical Contamination (Matt Smith)
--------------------------------------
As was stated last week I have had problems getting any signal from the
ion counter. I thought it was a bad cable connection between the ion
counter and the controller because I had that problem before and just
had to fix the cable- a pin would unseat itself. Fixing the cable did
not solve my problem this time. I could not remove the cover to the ion
counter because it was stuck. I tried prying it off but it would not
budge-it seemed bonded in place which I thought might have happened
after a bake. Anyway the rep from Pfiefer came down today and we put
on a new cable-that did not solve the problem. So I was faced with
having to get the cover off, which after some effort came off without
breaking anything. Imediately we noticed that the inside of the
ioncounter was charred from some arcing. The cover was stuck because of
a brown sticky liquid (flux maybe) had bonded to the cover and frame.
It was hard to determine what had caused the arcing but it is under
review. I explained to the rep what my procedures were and they will
try to determine if the procedures caused it. I would hate for a
reoccurance. So once again I am at the stage of venting the chamber one
more time to get a sucessful venting and pumpdown.
-----------------------------------------
Control and Data System -- R. Bork
(WBS 1.2.2)
-------------------------------------------
Data Acquisition
=================
- Network data server testing and documentation continues
- Data viewer undergoing tests for 16Hz update requirement; initial tests
indicate xmgr works at this rate for a few channels, but not the 16
channels as
used in the 40 prototype; Rates of 4 to 8 Hz refresh of 16 channels look
feasible.
- Work on Java interface will be presented at 4/20 LDAS meeting.
- Debugged and fixed problems with ADC external triggering and timing module
trigger synchronization with GPS; Watch Dog Timer VME module (of which timing
synchronization is a part) schematics changed to reflect fix and module is
going
out for procurement. This board run (20 units) will be totally fabricated and
tested outside.
Vacuum Controls
================
- Concentrating on procurements for Livingston system; presently appears all
equipment would be available on site for integration crew to show up there
for
final assembly and test week of April 13. This date will be firmed up once
all
delivery dates are verified next week.
Control Area / Networking
=========================
- Contractor has begun work on fiber installation to Hanford mid/end
stations;
should be complete within 2 weeks.
- CDS server for Livingston being setup at Hanford; this will be delivered to
Livingston prior to vacuum system integration/testing.
- ATM system ordered for Livingston site; should arrive there within next two
weeks; will coordinate with Wallace to have Fore systems rep show up on
site to
install system.
PSL (Abbott)
==================
1. Boards for the PSL frequency reference system are due in today and will
be tested as soon as possible.
2. Made all the changes to the existing frequency servo card so that a
final board can be waiting in the wings to go the the board house. The new
card adds features to the old such as high voltage pockels cell capability
and feedback sign flip for the fast path.
3. With the help of Larry and Jay, Peter King and I were able to get the
IOC Controller for the PSL crate to boot. We are now able to begin the
epics control debug in the Lauritson lab.
4. Performed accustic tests of the PMC cavity with Peter King to
investigate the resonance problems that are suspected. Found evidence of
significant mechanical resonances in the glass cavity at 9 kHz and above.
Peter is considering options now including the redesign of the PMC Cavity.
IO CDS (D. Ouimette):
=====================
We have Xin's PC operational now with Protel working and connected to the
Network. He is rapidly coming up to speed with Protel schematic capture and
is working on a prototype design of the Mode Cleaner demodulator board.
The photodiode PC board is complete and going through final checkout. We
should be able to go out for boards this Friday
Sander has worked with high voltage pulsers in the past and thinks he can
find a pulser / high voltage supply in one package that will meet our specs
for the electro-optic modulator. We are investigating vendors now.
Suspensions
============
- Testing continues on LOS controller modules
- SOS controller boards arrived and are being stuffed.
WBS 1.4 Project Office
Date: Thu, 19 Mar 1998 16:15:48 -0800
From: Phil Lindquist <phil@ligo.caltech.edu>
1.4.1.2 Project Controls (lindquist)
CHANGE CONTROL BOARD (lindquist)
====================================
The following change requests have been submitted and distributed for
information and review. A Change Control Board has not been scheduled
due to preparations for the NSF Review.
CR-980007 WBS 1.1.5 - Beam Tube Bakeout
CR-980008 WBS 1.1.1 - Vacuum Equipment Miscellaneous Charges
CR-980009 WBS 1.1.1 - Vacuum Equipment Changes
CR-980010 WBS 1.1.2 - Beam Tube Taxes and Module End Conditions
PROPERTY MANAGEMENT (chargois)
====================================
From: Ed Chargois <chargois_e@ligo.caltech.edu>
Assisted Optics Engineer with a shipment to the Hanford Observatory
to the attention of Doug Cook. Via telephone notified J. Berry of the
contents and planned arrival date of NLT 3-20-98.
Located a Leak Detector (VEECO) Mdl: MS-90 valued at the time of purchase
at $32,549. A Parts and Maintenance Manual is available for $75.00 per copy
from VEECO Instruments, Inc. (Tel: (516)738-9300). A home was found for this
piece of equipment (J.Worden). This was accomplished with the assistance of
Larry Jones. Shipment will commence 3/19/98 with an estimated arrival date
of 3/27/98 (account 5A521).
Meeting was held on 3/17/98 between E.Jasnow, E.Chargois and two Price-
Waterhouse Consultants. Price-Waterhouse is charged with the responsibility
of revamping Caltech's Property Management System. LIGO may be asked to
assist in this endeavor.
DOCUMENT CONTROL CENTER (turner)
====================================
>From: Dave Beckett <beckett@ligo.caltech.edu>
Good news! The LIGO Web Newsletter has been revived. Why not stop by at:
http://www.ligo.caltech.edu/LIGO_web/9802news/9802main.html and take a peek!
COST SCHEDULE CONTROL SYSTEMS (akutagawa, duncan, rianda, patlan)
====================================
>From: Cindy Akutagawa <cindy@acrux.ligo.caltech.edu>
Have been working on distributing the monthly reports (and answering the
questions that they generate). Have received the MIT invoices for the
months of January and February, and am in the process of entering the data
from the MIT "twonk" reports into a worksheet so the invoices can be paid
during the month of March. [It should be noted that the January invoice
will fit within the funding authorized on the most recent change order.
However, the February invoice exceeds the approved funding by approxi-
mately $60K. Irena is preparing an extension equal to approximately one
third of the draft proposal pricing information provided by MIT for FY 1998.
The final change order cannot be issued until the proposal has been
reviewed by LIGO management and the NSF. -pel]
>From: Kristin Duncan <kris@acrux.ligo.caltech.edu>
Prepared presentation materials and participated in the Facilities Cost/
Schedule review on Monday, March 16. Continued to adjust EAC's and actuals
per task manager inputs. Initiated work on materials to provide to the NSF
for the upcoming review.
Worked on adjusting the Level One Milestone chart. Conferred with task
managers, adjusting dates reflected and encoding where necessary.
Re-mapped drives on oldest PC to match cost/schedule groups drive mapping.
This was required to make Open Plan Pro truly multi-user.
Began the process of finalizing schedule reports and archiving February
data. Started producing large plots for the Detector and Facilities groups.
Created new templates, filters, and charts.
Installed and configured plotter/driver on new PC for the Design Jet 650 to
speed up production of large scale plots.
Continued documenting the ETC update process in Cobra 2. Continued testing
the Cobra 3 export utility.
Produced staffing requirement projections for the complete integration
process. Refined the LA 4K IFO and began work on the WA 4K IFO integration
schedule.
SUBCONTRACTS MANAGEMENT (petrac, jasnow)
From: irena@ligo.caltech.edu (Irena Petrac)
====================================
Schober's: Purchase Order (PO) for LOS fixtures and components has been
released. Kick-off meeting has been held and the work is under way.
Brookfield: Change Order (CO) No.1, incorporating production quatities
of LOS weldments, has been released.
March Metalfab: Novation of the HYTEC PO for Non-vacuum Hardware is in
the works. Caltech/LIGO Project will assume direct contractual responsi-
bility for the production articles.
B. Loucks: CO No.4, adding a second set of metrology mounts and mirror
testing fixtures, has been released.
General Optics: CO No.2, adding polishing of a second Sapphire crystal,
has been released.
Senior Flexonics: CO No.2, incorporating BSC-type bellows, has been
released.
CSIRO: CO No.5, exercising the contract Option for polishing of 12 Input
Test Masses, and adding a requirement for some additional polishing as
well as for 6 reference flats and 12 optics handling tools, is in Project
Office for signature.
MIT: CO No.24, allocating interim funds through May 31st, is in Project
Controls Group for review.
Telos: Telos local subsidiary, responsible for our support contract, has
been acquired by NYMA Inc., a Federal Data Corporation subsidiary.
Novation Agreement is in the works. As of now, contract terms remain
unchanged.
Galli&Morelli: PR for development work on new generation Detector suspen-
sions has been released by Detector Group.
>From: Ed Jasnow <jasnow@acrux.ligo.caltech.edu>
A meeting was held by Ed Jasnow and Ed Chargois with representatives of
Price Waterhouse to discuss LIGO's property management system. Price
Waterhouse has been given the task of recommending a new property
management system for Caltech, so they wanted to understand the LIGO
system. After the system was described to them in detail, the Price
Waterhouse people commented that LIGO was substantially ahead of the rest
of the Institute in this area, and that we were doing an outstanding job.
Modification No. 11 was issued to the CBI contract in the amount of
approximately $60,000 to cover Washington State taxes and module end
conditions [see CR-980010 above].
Modification No. 14 was issued to the PSI contract in the amount of
approximately $240,000. The bulk of this modification was for corrections
for the non-conforming floor elevations in Hanford.
A change order request was received from CBI in the amount of $169,000 for
extra leak location effort on the Y module in Hanford. This request is
being reviewed.
A lawsuit was filed by Acme Materials & Construction to recover $422,000
that is being withheld to cover Washington State taxes that are exempted by
special legislation. This suit is being handled by the Caltech Office of
General Counsel
>From: wea@ligo.caltech.edu (William Althouse)
TECHNICAL CONFIGURATION (Althouse)
Nothing to report.
1.4.2.1 Quality Assurance (tyler)
>From: "William H. Tyler" <tyler_w@ligo.caltech.edu>
No QA Status Report since Bill Tyler has been at JPL most of the week.
Date: Thu, 19 Mar 1998 15:55:29 -0800
From: lazz@ligo.caltech.edu (Albert Lazzarini)
To: lazz@ligo.caltech.edu
Subject: Weekly Report for Week Ending 19 Mar 98
Status:
1.4.3 Systems Engineering
1.4.3.1 Systems Engineering & Integration (AL, BB, CC, JK, DC)
__Integration Planning:
Bill Baldwin and Henry Patlan finished the latest schedule revision for
the WA 2km PR Near-Michelson and 2km PR IFO with Fabry-Perot arms.
This schedule has now been modified and scrubbed to become the first
schedule for the integration of the LA PR Near-Michelson and PR 4km IFO
with Fabry-Perot arms.
Bill Baldwin continues to update the nomenclature document. This week
naming schemes for chamber piers & actuators, chamber doors, and vacuum
ports were developed based on inputs from Dennis Coyne.
__Analyses: Nothing to report
__Reliability:
Started to outline and gather information with regards to the
development of a LIGO Detector Maintenance Plan.
__Integrated Layout/Drawings:
Completed the Hanford cable tray model and began working on the
installation layout and RFQ. Presented to the Mechanical Engineering
and Integration Board the detailed cable tray layout for the Hanford
corner station. Concerns were raised by the CDS group as to
insufficient tray capacity due to probable growth of the overall system
wiring once better defined. Design changes to alleviate these concerns
are being worked on.
Drawings of Vertex 4k & 2k Plan & Elevations were given to Ken
Mason and David Reitze at Hanford. Electronic versions were
also installed on Rick Savage's computer. Drawings of Vertex 4k & 2k
Plan & Elevations were released as -01 revision last week and converted
(courtesy of Mr. Althouse) to multi sheet drawings on 3/18/98. Am still
preparing drawings for electronic transfer to Hanford and expect to
finished tomorrow, Friday.
Will be starting the Mid & End Station ILD's Monday 3/23/98
after a number of minor layouts/tasks for ISC & PSL.
HANFORD OPTOMECHANICAL INTEGRATION MEETING
Round table discussion chaired by Dennis Coyne allowed us to
ask and answer a great many detail questions regarding the
integration of the PSL, IOO, Isc, & Core Optics. New Isc & IOO layouts
should be available in the next three weeks or so, which will allow us
to make first cut final adjustments to ILDs.
__Mock-ups: Nothing to report
1.4.3.3 Modeling & Data Analysis (KB/HY/AL)
FP locking study
Matt Evans used Adlib to test a proposed non-linear feedback loop for
locking a FP cavity (AL NOTE: this involves introducing logic in the
control algortihm with a branch point according to signal strength).
The objective was to increase the threshold velocity for locking. To
date the scheme has only been tested on a single FP cavity, but in that
regime it appears to be effective for at factor of 10 (or more) gain in
threshold velocity. Existing non-linear effects (i.e. rails) were
included in the simulation, but have not yet been tested with realistic
parameters. All of this was done with the help of Brent Ware. Brent
is attempting to test a similar configuration with SMAC.
Alignment support in E2E
Biplab started implementing the code for ths mode decomposition
calculation, which incldues the genertic case and the A266-like smart
algorith. The desging of the implementation of the modes in Adlib also
started. The time scale estimated is 3 months for the implimenation and
3 months for debugging and validation, total of 6 months.
LSC Meeting
Hiro attended the LSC meeting and gave a talk about e2e modeling
efforts. At the meeting, Florida group showed interest in implementing
IOO model using the End to End model environment. For this purpose.
someone will visit Caltech to start using the E2E model.
Another possibility discussed was model testing using subsystems
installed at Hanford site. Examples are PSL and Mode cleaners. Albert
is investigating the time scale, which could be something this fall.
(AL NOTE: this was suggested by Fred Raab and is an excellent way to
get the ball moving with regard to validation/testing the plan is to
have Hiro and maybe Serap be at Hanford when the PSL+IO start to come
on line to help with debugging/commissioning of the front end systems.
This places emphasis on devleoping physics models of detector
components in an order that matches the buildup of the detector).
After the meeting, Andrea Vicere visited CIT, and he explained their
modeling work for the VIRGO stack, and gave us several publications. He
showed interest in testing the VIRGO simulation model using the 40m
data. He indicated that he would like to visit CIT again sometime in
summer for that purpose.
Alfi development
The basic implementation of Alfi has been finished and is now being
debugged and improved for ease of use.
Bugs Fixed:
Components no longer get added to wrong submodule. Changed wording of
"Open" to "Load". Don't allow spaces for module names. Fixed ALParser
so it doesn't allow a module to be added twice. Don't allow inclusion
of a module that would result in a cycle.
New Features: Can select multiple items and move them. Allow rotation
of icons. Clicking in a list box when editing parameters brings the
values into the edit boxes. The release number is available in the
"About" box under the "Help" option.
Data Analysis & Modeling:
KB presented the current software and data standards at the LSC meeting
last week. Several useful suggestions came out of the meeting and have
migrated into the software design.
KB developed a proto-type TCL/TK server - multiple clients test program
that demonstrates the TCL's ability to use sockets, tailor commands in
sent over the socket, and use sockets within an an applet running
within netscape.
KB wrote a purchase request for an Alpha based LINUX box to be used for
proto-typing components of the LDAS. The box uses a 600MHz Alpha and
has a 4MB SRAM cache. The box is quoted to deliver ~9x the floating
point performance of a 300Mx pentium II. If so it is more cost
effective and in addition has a lower power per floating point
operation than the pentium, both of which would weigh favorablity with
the needs at the sites.
KB downloaded a C++ socket class that has the same interface for socket
communication as iostream, allowing type safe i/o through sockets! KB
has not had a chance to play with this package but is optimistic that
it has the kinds of support needed to communicate data between
components of the LDAS system.
Anderson reports:
Yesterday we got the direct ATM connection working from the 40m to HPSS
without having to go through my workstation. Initial tests indicate
that this link itself runs at ~5MB/s without any tuning.
As a favor to Larry I started a check on the old LIGO passwords (from
gsparc). The standard dictionary search has currently found 18 matches
including kent, rolf, prince! When the search finishes (it runs as a
nightly cron job on idle Ultra's in SRL) I will check the new LIGO
accounts (from sirius).
COLLABORATIVE RESEARCH
S. Finn
-------
1) Developed a ``science benchmark'' Matlab model for use by LSC Isolation
Systems and Suspensions development group. This follows the proposal first made
in LIGO-T970167-00. This model is being used to provide a common standard
against which proposed detector system enhancements can be compared. The Laser
and Optics working group has also expressed an interest in this model, and it is
being extended to provide a common model that can be used to compare proposed
enhancements across the two groups, as well as within a group.
2) At LSC meeting 12-14 March. ``Chaired'' LSC Detection Confidence and
Statistical Analysis Group. The charter of this group is to develop a set of
priorities for the data analysis system and survey the resources available in
the collaboration, addressing specifically techniques to assess detection
confidence and uncertainties in astrophysical parameters, multi-interferometer
analyses, correlation with other gravitationa-wave and particle detectors,
overall analysis system tests.
3) At LISA Mission Definition Team Meeting 16-17 March.
S. Mohanty
----------
1) Continued with the conversion of Gabriela's code to alfi. I am also preparing
a note on the work done so far and possibly another note outlining the exact
master equations. My work on obtaining a modular scheme for the SEI/SUS code
continues in the form of further reading. A part of my time was spent on our grb
project in which connection I had a discussion with Sterl Phinney.
2) Met with Hiro, Biplab, Andrea Vicere (from VIRGO) and Ricardo DeSalvo,
in which we got to know about the modeling algorithm and physics for the
VIRGO seismic isolation system. Essentially, the scheme used by them consists of
separating the seismic stack in terms of rigid and elastic bodies and
substituting the elastic bodies by potentials which depend on the positions of
their boundaries. This scheme is expected to model the dynamics well in the
low frequency (< 10 Hz) regime. However, there are severe accuracy problems
with the numerical implementation in some cases, to overcome which extremely
extended precision was required. Andrea has provided us with a set of documents
which describe their modeling. I outlined my scheme of making a modular model
of the SEI/SUS and Andrea suggested a reference which may contain the same
idea.
S. Mukherjee
------------
1) Generalised the problem of working out a suitable statistical test to find
the possible association of gamma ray burst and binary coalescence. Worked out
an algorithm for computing the threshold. Prepared a report for the same.
2) Generalised the algorithm mentioned in last week's report further
such that its application is not restricted to statistical tests
for investigating possible association between binary coalescence
and gamma ray bursts alone, but can be extrapolated to any physical
problem of similar nature.
J. Romano
---------
1) Continued to work on a paper that compares the cross-correlation
and maximum-likelihood statistics for stochastic gravity-wave searches.
I had a a discussion with L.S. Finn on Monday, which clarified some
points that I was confused about.
2) Continued reading papers on gamma ray bursts in order to calculate
the probability distribution for bursts (of the bright class) having a
redshift between z and z+dz. Plan to talk to Joshua Bloom about these
matters.
1.4.4.2 General Computing (LW/TE)
Following is a compilation of two weeks' worht of work.
MIT:
Nothing to report.
Livingston:
1. A SUN workstation has been ordered to act as a mail/print server for
the site.
2. Items are being purchased and plans made in preparation to get the
ATM side of the network up and going.
3. Some minor fixes of accounts and pc's.
Hanford:
1. The PR for the network equipment to be installed is in process.
2. Acquisition of the network addresses to be used is in process. The
ESnet group is handling the network assignments and will let us know
what they are in the near future.
3. A SUN workstation has been ordered to act as a mail/print server for
the site.
CIT:
1. The scripts used to update the calendars on the web have been moved
over and reset for the existing system.
2. Installation of multiple PC's including PC's installed at Wilson
House by Jay H. We are still in the process of installing s/w packages
but most of the machines have been taken care of.
3. Multiple e-mail fixes. We are now down to one e-mail server. Not all
of the aliases moved over cleanly and we are in the process of getting
the files cleaned up. All of the known changes needed should be done in
the next few days.
4. A major problem with the network getting overloaded has been cleared
up. The new server was creating an infinite loop in the routing tables.
After setting up the ip-forwarding the problem appears to have been
resolved.
5. Multiple patches and s/w fixes on a variety of machines.
6. Dave B. and Barbara K. are now working with the scanner to
incorporate items on to the ligo web.
7. Barbara finished the WebBase application for searching the DCC
database. Added a search for group/department. Now am writing some
queries to import the
.pdf file names so electronic documents can be viewed via hyperlinks.
8. Barbara scanned photos and diagrams for the newsletter.
9. Barbara installed numerous changes to website including:
February newsletter Aspen transparencies Reformatted Change
Log, About LIGO, Other GW Activities pages Revised computer
services request form Misc cosmetic changes
10. Barbara began cleaning up internals of internal and external web
sites -- archived some files, deleted duplicate files, consolidated
some directories.
11. Barbara reviewed changes needed to EPICS/CDS database.
12. Barbara began working on Outgassing database.
13. Worked with Jay, Rich, and Peter to resolve some problems getting
the PSL equipment to work on the network.
14. Stuart A. is progressing on his tests of LANE and CLIP network
connections from the 40M to CACR.
MIT:
Nothing to report
Livingston:
1. More computers have been ordered.
Hanford:
1. The installation of the FORE equipment for general computing has
been installed. FORE was able to send a SE for a day and with Dave
Barker and Daniel Sigg, we were able to install the general computing
FORE equipment as well as the CDS FORE equipment. The two networks were
also connected. There were some minor problems with the CDS switch but
they appear to have been resolved. The most difficult problem was
running the cable under the floor. Getting the floor tiles up proved to
be a time consuming process.
2. We were able to meet with U.S. West and clarify items for the T1
installation. It looks like things may be back on track. We are getting
up to date quotes for equipment from U.S. West and the jumpers for the
fiber were scheduled to be installed this week (March 8-14).
CIT:
1. The biggest issue was the ligo server which was used as a relay for
e-mail, Web services, DNS, FTP services, license server and NIS server
for some of the older equipment. It could no longer keep working for
any length of time and has been replaced. The machine called hadar has
replaced the ligo hardware (hadar no longer exists). Currently, the
anonymous ftp, mail relay, DNS and Web services reside on the new
machine. There is still quite a bit of tweaking of the unit that need
to take place and will be done over the next few weeks.
2. Multiple accounts and mail account issues have been resolved.
3. Resolved some configuration issue with the Cadence program on puma.
4. Resolved hardware issues on multiple workstations. Most were loose
cables.
5. Working on maint. contracts with FORE on equipment purchased last
year.
6. Continued to work on web interface for searching the DCC. Built a
new Access database called WebDocs that contains only the fields needed
for the interface formatted for web searching and display. Set up
macros to copy live DCC database to WebDocs. Have searching by
Document Number, Year, Category, Title, Author, and/or Contract Number
just about working. We've purchased Webbase but will need WebDocs and
WebBase set up on a Windows server linked to our site before this will
all work.
7, Worked with Dave Beckett to prepare the newsletter for web
publication. Reworked the templates. Scanned the photos and sized for
web production. Worked with Dave on HTML for inserting the photos.
Made a link on the LIGO news page for this edition of newsletter.
8. Set up the program for the Aspen Winter Conference as a web page.
Added links to directories of transparencies.
Date: Thu, 19 Mar 1998 14:33:53 -0800
From: Beth Moore <bmoore@ligo.caltech.edu>
1.4.4.1-Administrative Group
Irene Baldon:
Arranged and processed the paper work for 15 trips. Continued to
work on the preliminary arrangements for the upcoming GWIC/PAC4
meetings to be held in Livingston, LA, in April. 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 Staff Payroll, incorporating various recent changes, and
the processing of Vacation/Sick Leave accounting.
Rita Torres:
ACTIVITY
For I. Petrac did edits to change order No. 2, Senior Flexonics, and
change order No. 24 for MIT,
For E. Jasnow did letter to bidders of RFP EJ-291 for Electrical
Contractor Services for BT Bakeout at Hanford. This letter was to
remind them of the pre-proposal conference at the site on March 24
at 9am, and the due date of April 6. The letter was faxed to bidders,
then a hard copy mailed.
Distributed: Material for upcoming CCB.
Got a chance to organize and file away chronological file copies.
Prepared some 1997 files for velo binding, to then eventually
submit to the DCC. Also had a chance to purge old, unnecessary
electronic files.
INFORMATION - CCB
The ever-popular Change Control Board form (done in FrameMaker)
can be found at \torres\crform01. Date of current form is 7/97.
UNIX users - I'm told you can click on New then LIGO; or find it at
apps/frame/fminit/usenglish/templates/LIGO.
Dorothy Lloyd:
Beth Moore:
High volume of last-minute activities, including but
not limited to: personnel actions, account distributions, spreadsheet
updates, coffee purchasing, dusting, clock-mending, etc.
I have donated 3 new coffee pots to the third floor as a goodbye gift.
As I prepare to leave, thanks to Rita, Dorothy, and Irene for
their great work; admiration and respect to
Gary and Barry for their keen management of LIGO; deep appreciation to
Linda, Cleveland, and Dave for their ever-cheerful assistance over the
years; and undying gratitude to Larry Wallace and Tots for keeping
me on-line against my Toshiba's wishes.
Date: Thu, 19 Mar 1998 16:48:18 -0800
From: Fred Raab <raab_f@ligo.caltech.edu>
=========================================================
LIGO Hanford Observatory (LHO) Operations (F. Raab)
=========================================================
General Items:
--------------
LIGO Hanford Observatory hosted the LIGO Science Collaboration Meeting and
associated working group meetings on March 12-14. There were approximately
85 people attending the meeting in addition to the regular staff who were
diligently taking care of normal business. There were plenary sessions and
up to six simultaneous sessions when the working groups assembled. We were
able to accomodate the large number of parallel sessions by pressing the
control room and computer users room into service as conference rooms and
by sending the more theoretical sessions to the trailers. We will lose
the seating capacity in the control room and computer users rooms as they
are set up for their true destiny in the next few months.
In related news, Otto Matherny and Fred reviewed the design drawings for
the additional building at Hanford. The design for this structure,
intended to provide space for shops, prototyping, storage, staging and
related activities, is now about 60% complete.
R. Savage and K. Libbrecht discussed plans for the three to four students
who will be resident at the Hanford Observatory over the summer for REU
projects. Hanford staff is beginning to coordinate procurement of
equipment that will be required for the summer projects, some of which will
be part of the PEM system.
More parts have been received for the HAM SEI first article test. A price
and delivery quotation has been requested for a gantry crane. One of its
uses will be handling HAM SEI components during cleaning to remove dirt and
oil.
John Worden, Kyle Ryan and Fred participated in a very productive meeting
of the vacuum review board, where we adopted the methodology for vacuum
bakeout procedures and qualification criteria for LIGO in-vacuo hardware.
This was essentially the last gate prior to baking the first oven loads for
LIGO - to be done at Caltech. K. J. Lesker has submitted their detailed
fabrication drawings for bake-oven components for final approval. John,
Kyle and Fred have reviewed drawings and recommended some minor revisions
and clarifications which should not affect schedule. We will be sending
copies of the drawings to J. Hazel and K. Mailland for their ready reference.
Doug Cook has started putting together some of the laser training procedures.
Some of the videos that arrived had bad sound tracks and need to be returned.
Drafts of our Laser Safety procedures are being reviewed by Mike Zydowicz
and Gary Sanders. Baseline eye have begun for LHO staff. Doug has also been
working with Helena Armandula, Janeen Hazel and Mike Smith On the "Cleaning
Station" requirements.
Rick Savage represented LIGO Hanford Observatory at the Pacific Coast
Gravity Meeting in Eugene, Oregon March 20-21. He will give an
update on LIGO Hanford Observatory status. On Friday, March 20, Fred hosted
a group of students from Union High School who made the trip up from Oregon
to visit LHO.
Detector Diagnostics
--------------------
Daniel Sigg, Rolf Bork, Mark Pratt, David Shoemaker
The global diagnostics PDR document (T970172-A) and the channel
count (T980004-00) were finalized. Preparing VGs for the upcoming
review on 3/20/98.
Peter F. and I started working on the reflective memory organization
for GDS data and the test point interface for digital subsystems.
Beam-Tube Bake Out:
-------------------
(M. Lubinski, M. Guenther, K. Stiff and W. Althouse)
Electrical Design
The Request for Proposal for Electrical Contractor Services (EJ-291) has
gone out. A pre bid conference will be held at Hanford 3/24/98. The
containers to house the DC power supplies for the Bake Out are on site.
These will also be part of the electrical contractors work.
Bake Out Blankets
The first shipment of the blankets for the Beam Tube Bake Out have arrived
on site. The rest of the order will be arriving over the next few weeks.
Data Acquisition System
Work continued on refinement of the main operator screen, detail screens
and power supply user interface. Refinement of hardware I/O drop design
continues including cable, connector, and enclosure design.