The Project Control Meeting
Agenda for Monday August 31, 1998 will be:
(Meeting time: 10:30 am Pacific Time)
=========================================================
LIGO Hanford Observatory (LHO) Operations (F. Raab)
=========================================================
General Items:
--------------
Our undergraduate students have left for school, but Malik (and
hopefully other graduate students) will be joining us more often.
The pace of activities here continues to increase as installation
activities ramp up. The beam tube bakeout seems like a relatively
calm business just now, but there are a lot of sleepy people around
here and we had some exciting times during the past week.
Seismic Isolation Installation:
-------------------------------
(C. Gray)
Locating and checking of holes for 4k HAMs was completed. Apollo has
begun drilling holes for HAM #1 (may be done).
For the 2k HAMs, the roughing of the floor for grouting of the piers
is complete for all pier locations.
Dennis Coyne arrived (8/24) to offer assistance with work.
Disassembly of the HAM commenced this week. Optics Table and stacks
were removed from the HAM. The Optics table was wrapped in foil and
ameristat; the Leg Elements were wrapped in foil. These items will
be crated and sent down to Allied for cleaning once we have adequate
padding for these components. The springs and seats are not wrapped
yet. The seats await inspection for any possible wear (cracks)
incurred during use (or fabrication).
At the 1st Article HAM tests are being conducted for fixtures which
can perform the the same duties of the Rail System (which was used
during assembly). Thus far we have used the new fixtures to take the
load of the Support Table/Support Tubes on two corners. With these
fixtures we have been able to remove the V-blocks and Bellows on one
corner (other corners will be worked on today).
BSC 1st-Article Test:
---------------------
(H. Radkins, from HYTEC, Los Alamos)
During the past week, activities around the BSC SEI testing have
mainly centered on the actuation stack. It was April when the initial
alignment of the Adapter Plates was done. Since then many activities
have apparently caused shifting of that alignment so the initial
survey task was revisited. Further clarification of the requirements
of the alignment have also helped to define this task. The goal
is to
achieve a ±1 mrad alignment of the overall system (squareness)
and
individual actuators. Using our procedure, system alignment was
obtained to 0.12 mrad and individual alignment ranged from 0.5 to
1.0 mrad.
After the alignment, the preassembled fine-x stage was being installed
only to find the bolt pattern attaching the bottom frame to the
scissors table was too close to the overlapping top frame to allow
the
bolts to go through. So, the fine stage was disassembled for
installation.
It was then noticed that the z-stage motor mount was protruding
through the top of the scissors table causing the fine stage to
'rock'. The mount's threaded length was the same thickness as the
scissors table top plate guarenteeing interference most of the time.
We pulled all the fine stages off again and found the mount protruding
in three of the four cases. The fine stage bottom frames were taken
to
the machine shop for a counter bore to accomadate the intrusion. Also
during the fine stage pulling, a dowel pin was sheared off in the
scissors table. So this table was pulled and also taken to the
shop
for work.
With the shop work taken care of, (overnight) we reinstalled the fine
stage bottom frame and then assembled the fine stage on the stack.
Next followed the coarse x-y stage and airbearings without problem.
The crossbeams follows on top of the airbearing. The planned
leveling of the crossbeam worked well as did the coarse stage flexure
fixture (this prevents damage to the flexure while maintaining
alignment during installation.) However, stack up of tolerences seems
to be the only answer as to why the airbearing ends up not being
closer to the center of its base surface, it was far enough off center
as to not meet design requirements. So, last night the shop made
offset stops to position the crossbeam wrt the airbearing rather than
the 'D' nossle. OK, back to shop.
Optics & Lasers:
----------------
(D. Cook)
The University of Florida IOO people are getting their first lessons
on how to clean their optics this week. Helena Armandula is
instructing them on her techniques. The water purity system has given
us some problems which I hope to get resolved shortly. We have a few
bugs to workout of the lab equipment to better produce results.
We have been working on a portable laser safety barrier for the LVEA
to allow people to work in the vicinity of the PSL without the aid
of
safety glasses. This is needed, primarily do to the burst of
construction and HAM installation going on. It will make it easier
to
control the laser hazards in the LVEA and it will also double as a
portable soft wall enclosure later on. Laser safety procedures are
still an on going issue for the LVEA and VEAS.
With the addition of the transverse flow benches and the wearing of
clean room garments in the optics and vacuum preparation labs the air
quality has improved greatly and the particle counts are more much
more stable.
Electrical/Electronics Systems:
-------------------------------
(R. McCarthy)
Finished installation of CDS racks in preparation of PSL electronics
arrival in September.
Installed a two inch conduit from the roof to the LVEA for the 2k
interferometer GPS cables.
Accepted delivery of Control Room furniture. Assembly and placement
will be on Thursday 9/3/98.
Rewired soft wall enclosures for optics lab.
Computing Systems:
------------------
(C. Patton)
The new 18GB external disk has been partitioned into 4 4GB sectors.
All of the user accounts have been moved into these sectors. The disk
is mounted as /opt/ligo/a, b, c, and d: /opt/ligo/a contains
LHO
staff accounts and allows up to 200MB of space per account,
/opt/ligo/b and /opt/ligo/c contain LHO staff and visitor accounts
with up to 1GB of space per account, /opt/ligo/d contains visitor
accounts with up to 200MB of space per account. We also have a 9GB
external disk which can be used for expansion in the future.
Sun's WorkShop, software development package, has been installed and
licensed on the server. We now have compilers for C, C++, Fortran77,
Fortran90, and Pascal. The emacs editor also provides a language
sensitive editor for writing code. We have on-line documentation,
which Daniel Sigg has figured out how to use and has gotten everything
setup properly on the server so that it is available to use.
However,
the documentation does not include anything for the Fortran and Pascal
compilers, so I will have to order those.
Beam-Tube Bake Out:
-------------------
(M. Lubinski, M. Guenther, K. Stiff and W. Althouse)
The beam tube has been stabilized at 150C. since the 22nd. We have
been continuously monitoring the tube with the RGA and the H2O is
approximately 7 e-7 torr. We are fine tuning the blankets, the
system overall and improving the ambient environment around the
power supplies.
LIGO Livingston Operations
This is the first of the weekly reports to describe
operations related
activities and issues at the Livingston site.
A first draft list of activities that must be accomplished this fall
to
prepare the site for detector installation activities has been developed
and site personnel have been assigned along with due dates.
Heavy duty storage shelves (similar to those at Hanford) have been
installed in the clean storage and staging buildings. (Riesen)
We have contacted the Vice Chancellor's office at LSU via the Physics
Department to ask for their assistance with completing the site access
road. They have expressed interest in helping us with this. (Coles)
An electrical support equipment list has been completed and circulated
(Svoboda). Similar equipment lists for the optics and vacuum prep area
(Kern) and the mechanical lab (Franklin) have also been completed and
will be circulated for comment.
A double door access between the vacuum prep and optics lab has been
installed, following the suggestion of Hanford (Kern, Stapfer).
WBS 1.1.1 Vacuum Equipment(Worden)
1. Gate Valves: 3 accepted so far.
a. WGV11 (Y-end) Complete.
b. WGV12 (Y-mid BT) Complete.
c. WGV17 (Y-end BT) Complete.
d. WGV14 (X-mid) Ready for in-situ leak test
e. WGV18 (Y-mid) Ready for in-situ leak test
f. WGV20 (X-end) Complete.
g. WGV16 (X-mid BT) 50 cycles complete. Ready for in-situ leak test.
h. WGV15 (X-mid) Replacement bellows was damaged, waiting for new.
i. WGV19 (X-end BT) Complete, not yet accepted.
j. WGV3 (LVEA-48) Ready for in-situ leak test.
k. WGV5 (LVEA-44) Waiting for bellows.
l. WGV10 (Y-mid) Waiting for bellows.
m. WGV6 (LVEA-BT) Ready for in-situ leak test.
n. WGV8 (LVEA-BT) New gate installed,new air cylinder installed.
o. WGV1 (LVEA-48) Most work completed, however noise on actuation
may mean redoing some.
p. WGV13 (X-mid BT) Waiting for bellows. Gate ok.
2. X-end bake is complete, 80K pump has been cooled in
preparation for RGA testing.
3. PSI is preparing 4 Aux-turbos and 2 main turbos for
shipment to LA to aid in their work there. These will ship with
the end station blankets.
Livingston Installation (Allen Sibley)
PSI has pumped the x arm end station to < E-7 torr. Several small
leaks
were found and repaired. The 80K pump has been charged and tested.
Ion
pumps are on and working well. The 80K pump is now being regenerated.
PSI
is now moving to the y arm end station to begin pumping out and testing.
WBS 1.1.2 Beam Tube (Larry Jones)
a. Livingston Installation
CBI continues to pump on the Y arm in preparation for
acceptance testing. Current pressures (torr) are as follows:
Corner Y1 Mid Mid Y2 End
1.8E-7 1.1E-7 5.4E-8 1.9E-7
The mid station valve is now closed, but CBI will be
requesting its reopening soon. Annulus ion pumps have
been installed at each of the three termination gate
valves; ion pump pressures are in the E-5 to E-6 torr ranges.
CBI technicians are making additional leak checks at the
bolted pump port/valve joints for assurance of tightness.
An Edwards technician is expected at Livinston on 8/27 to
start reworking the logic on the turbo pump carts to assure
that the safety valve in the turbo foreline is closed unless
the backing pump is running. This is expected to take about
4 hours per pump cart and all of the carts used by CBI will
be reworked in place, requiring that they be out of service
for only the 4 hours of basic rework. The turbo pump cart
that failed last week is being investigated, and the
presence of the Edwards technician may be used on that
problem also.
The RGAs have not been installed at the Y arm pump ports
yet; they are set up with the remainder of the RGAs (10 in
all) in the staging building, along with the fiberoptics
and hubs, for a demonstration of hub performance. The
Balzers technician is expected on 9/1 to demonstrate this.
b. Other Issues: Hanford VAT Valve Adjustments
VAT has sent us a letter stating that the pump port valves
are no longer covered by VAT warranty. This is being
transmitted to CBI for resolution, as CBI's warranty still
was in effect at the time the issue was raised. VAT has
verbally assured us that they will support the planned
September rework, but now there's a question of who's to
pay. The two spare valves received from CBI will be
shipped back to VAT for rework.
> 1.1.3 & 1.1.4 BTE and Civil Construction (Fred Asiri)
>
> >>Issues:
> Hanford:
1. New Staging and Storage Building, request for approval of
contract has been sent to NSF. It has been requested to
award
the contract to George Grant Construction.
2. The asbuilt drawings for the Hanford site, we have received
the asbuilt drawings in the DCC. They will be distributed
shortly. Parsons is in process of converting the asbuilt
drawings to a "pdf" fornmat.
> Livingston:
1. The asbuilt drawing is being prepared by Parsons. They will be
completed in next two weeks.
2. We have extended the contract for Bob Beter to stay till the end
of September. However, Bill Holliday's last day as Parsons'
CM
will be Friday September 4, 1998.
I will be at the Hanford site next week to coordinate and
to participate
in the SEI Installation effort.
Hanford Construction (Otto Matherny)
Levernier
All the outstanding items are complete.Levernier
has completed
their contractual obligations. At the
present time we are
reconciling all the payments and credits
for the final
payment.
(No change this week)
An outstanding claim for propylene glycol
was settled with
Apollo.
OTHER ITEMS
The maintenance contract was agreed upon
with Siebe. We have
a fixed price contract for $66K to do
all the preventative
maintenance. Siebe will also change
the belts on the Kaiser
air compressors twice a year. Even though
it is a fixed price
contract we will get itemized bills,
including labor, material
overhead and profit.
The start of this contract is very timely,
we had one air
compressor and one chiller failure this
week.
Livingston Construction (Gerry Stapfer)
Paving of the service road has been completed for both arms and the
contractor is about to complete the parking lot paving.
The roofing and the panel subcontractors have inspected their respective
areas. At this point it appears that the leaks may be on the panel
side but
confirmation depends on removing part of the panel for further
investigation.
We received a proposal from Gulf Western Electric for the QA
of our
electrical installation. A second part of the proposal addresses an
evaluation of the overall power factor to analyze and optimize our
electrical cost.
Date: Thu, 27 Aug 1998 21:06:01 -0400
From: David Shoemaker <dhs@ligo.mit.edu>
----------------------------------------------------
DETECTOR GROUP -- Whitcomb/Shoemaker
(WBS 1.2, 1.3)
----------------------------------------------------
-----------------------------------------------
Implementation Group -- Mark Coles/Fred Raab
-----------------------------------------------
40m (Jennifer Logan)
--------------------
This week we have made a lot of progress on understanding the power
fluctuations that we see in the power recycled michelson and on setting
up the wavefront sensors.
As we have already described we have been characterising our 'mixed
bag' of supensions and setting up the damping carefully to applying
the
maximum damping that we can, for the given level of sensor noise.
Indeed we modified the south vertex shark (position shadow sensor)
controller shape so that we could further increase the damping to this
degree of freedom. Yet when we lock the power recycled michelson
it is
evident that the power in the cavity is fluctuating at ~ 0.95 Hz.
This
was traced to the beamsplitter pitch (the natural pitch frequency of
this suspension is 0.79 Hz) and is induced by the length servo.
After
some investigation and calculation we conclude that the beamsplitter
cannot be balanced at both dc and at frequencies around and between
the
pitch and pendulum frequencies (where 'balanced' means that if you
push
on the BS with all four coils, the force applied to the top coils,
as
compared to the lower coils, is such that the beamsplitter does not
tilt in pitch). Since the frequency of the fluctuations does
not occur
at a natural suspension resonance, the local/global damping systems
have little loop gain at this frequency and so have little effect.
We
thus turn to the wavefront sensors. These were set up on Monday
and we
have succeeded in closing all four the analogue loops to the recycling
mirror and beamsplitter. We are now investigating the digital
loops.
We have successfully closed the loops to the beamsplitter and are now
working on the filter shaping to increase the damping in the region
of
1 Hz.
Since our decision last week to run the beamsplitter and recycling
mirror with no local position damping we have been able to
significantly increase the bandwidth of these servos. The beamsplitter
loop however will not acquire lock without some amount of position
damping and lowered dc gain; the recycling mirror loop seems to be
much more immune to these effects.
----------------------------------------------
Interferometer Sensing and Control -- M Zucker
(WBS 1.2.1.1.6, 1.2.1.1.7)
----------------------------------------------
ASC Design & Fabrication (K.Mason, M.Smith, M. McInnis)
--------------------------------------------------------------------
18 Blue Sky diode optical lever source lasers are being shipped FedX
to
us today. A revised quadrant photodiode design is expected to
be
completed this week and shipped to us next week.
#MZ note: we will try again
to develop an alternate
vendor for this critical component.
Testing & surveys last
year turned up only one satisfactory
product (Blue Sky), but
things change quickly in the
diode laser business.
We have recieved the first support stand for the optical levers. 8
support stands are completed by the fabricator and are scheduled to
be
shipped to Hanford on Monday.
A detailed drawing of the IOT7 isolation enclosure has been completed
and
sent to suppliers for quote.
ASC wavefront sensing implementation (MZ for Nergis Mavalvala)
---------------------------------------------------------------
Nergis is working with Mike Smith and Peter Fritschel to coalesce and
rationalize the Guoy phase selection and COS beam reduction telescope
requirements into a simplified joint telescope design. This will
greatly simplify the telescope implementation on ISCT9(3) and
ISCT10(4). Also moving forward with Ken Mason on Guoy phase selection
for ISCT7, which does not require a COS beam reducer.
ISC design (Fritschel)
----------------------
o Working out details of the optical components for IOT7, the
mode cleaner sensing table.
#MZ note: as of this morning
all significant IOT7 optical
components are on order. Our
100 mW YAG alignment laser also
just arrived today from CrystaLaser
Inc. We anticipate staying
on schedule for shipment of
IOT7 to Hanford (nominally 10/20).
LSC control development (Ed Daw)
--------------------------------
Since returning from my vacation on Monday, I have
continued to work with Peter Fritschel in thinking
about how the LSC servos and code may be tested
before commissioning. I have also started testing
options for a GUI for simple control of the arbitrary
waveform generator developed by Daniel Sigg and Mark
Pratt for test signal injection into the LSC servos.
LSC acquisition development (Brent Ware)
------------------------------------------
Worked on updating documentation and addressing issues raised in
design review (latest IFO parameters, increasing phase margin, etc.).
-------------------------------------------
Lasers and Optics -- J. Camp
(1.2.1.1.2, 1.2.1.1.3, 1.2.1.1.4,1.2.1.1.5)
--------------------------------------------
Prestabilized Laser -- Peter King
--------------------------------------------
- The PSL remained locked, with all four servos -- frequency stabilization,
temperature stabilization, pre-modecleaner (PMC) and intensity
stabilization --
for a period just over 48 hours before losing lock to the PMC.
The high
voltage (~300 V) to the piezo-electric transducer (PZT) on the PMC
railed,
limiting the dynamic range of the PZT.
It should be noted that the
PZT was damaged some time between
February and the present, resulting in a reduction
in its maximum motion.
- Another PMC has been made and installed into the PSL setup.
To date no
problems have been experienced the its dynamic range.
- R. Abbott and P. King have been characterizing the VME-based PMC servo
and issues related to lock acquisition of the PMC.
Input/Output Optics -- Dave Reitze, UF
-----------------------------------------
IOO Installation -
Most of the components have been received for the 2 km IFO. The
UF
machine shop did not have the facilities to weld the PSL periscope;
it has
been sent to a sheet metal shop for welding and final assembly (thanks
to Ken Mason for the recommendation). Some IOO optics have been
placed on
the PSL table; we are still waiting for some machining jobs (adaptor
plates, etc) to finish the beamline.
REO reported this week that they forgot to place
the aperture on the 2 km
mode cleaner curved mirror (MCCM) before a coating
run. The aperture
defines a central coated area which provides higher order mode filtering
in the mode cleaner. Fortunately, only one of the 2 km MCCMs was in
the
run. The other will be coated this week (with the aperture in
place!)
Guido Mueller, Qi-Ze Shu, and Sany Yoshida are at Hanford learning the
processing protocol (cleaning, magnet fixturing, and baking) for the
suspended optics. So far, successful dry runs on aluminum dummy
substrates have been achieved. An MIT PNI mirror is now being processed.
(The first batch of mode cleaner mirrors has been received at Hanford;
we
are waiting for the de-ionized water to come on line to attempt a real
optic.) Special thanks to Helena Armandula, who has come to Hanford
to
provide the optics cleaning training.
Mode Matching Measurement -
Qi-Ze is out at Hanford this week; no significant activity to report.
High Power Testing -
Remeasured thermal lensing in the 8 mm Faraday rotator (manufactired
by
EOT). This time we heated the TGG crystal about 30 min by YAG laser
before
the measurement so that it might be thermally equilibriated and also
made
sure to tilt the TGG slightly to the optical path so that back reflection
of the probe light might not cause interference. The resultant thermal
lensing agrees very well with the theoretical value of the bare TGG
case.
(Previously, when placed in the magnet housing the thermal lensing
was
higher than the bare TGG case by a factor of three).
Next up: measurements of phase stability of the EO modulators
Core Optics Procurement and Metrology -- GariLynn Billingsley
-------------------------------------------------------------
Veeco continues work on the IR interferometer in Tucson. They
hope to have
the next acceptance test soon after labor day. They have decided
to
replace the Dell computer entirely since it's problems were numerous
and
not responding to fixes.
CSIRO estimates shipping of BS05 by the 14th of September, this is later
than they had hoped, but they are understaffed at the moment due to
various
staff vacations. CSIRO has suggested a coating measurement on
the
returning BSs, using the same process with which they characterized
the
transmission flats they made for the IR interferometer. The data
and
reports of the IR flat characterization can be found at:
/home/gari/data/metrology/IRflats/Analysis of
IR3 and... .doc
This is a "Word" document.
Core Optics Coatings -- Helena Armandula
--------------------------------------------------
REO contract - COC's coatings- Spoke to Ramin Lalezari, the re-worked
beamsplitters are going to be coated at not extra charge and they will
be
scheduled to get coated as soon as they arrive to their facility. I
informed him of my intentions to be present when they prepare the next
set
of optics. He agreed and welcomed the idea.
Hanford Lab. / UFL : Our training schedule has encountered significant
delay due to the "hic-ups" during the start-up of the Optics Lab.
Everything was in place but, when we started to utilize the facilities,
the problems
surfaced. DI water system did not work properly because of pressure
problems in the system, The microscope was received withoput a power
supply; the hot plate was shipped with the wrong temperature probe,
some
of the lab ware was missing from the order. We will go through the
cleaning motions any way and I am confident that the basic cleaning
concepts will be conveyed.
Core Optics Support -- Michael Smith
------------------------------------
GUOY PHASE ERROR of PO TELESCOPE:
Correction. The Guoy phase error of the ideal PO telescope in the vicinity
of "best focus" has been reevaluated, and it is negligible. The only
significant Guoy phase error will be introduced by aberrations in the
real
PO telescope, as previously evaluated.
BEAM-DUMPS:
The prototype double beam-dump prototype exhibited excessive compliance
in
certain areas and the structure is being stiffened to reduce the
compliance. A. Bagdalian has sent some of the rework drawings to the
shop,
the remainder of the rework drawings will be given to the shop by the
end
of this week.
ITM BAFFLE:
A. Rosa is modifying the 3D layout of the ITM baffle and support structure
in the spools WBE5 and WBE6 in order to reduce the compliance of the
structure.
PRODUCTION:
2 inch Steering Mirors-
A purchase order has been sent to REO for fabrication and coating of
60, 2
inch steering mirrors to be used to steer the pick-off beams on the
HAM SEI
platforms.
ETM and PO Telescope-
Component Specifications are being completed by J. Kern and M. Smith
prior
to going out for bid to purchase the final design and detail drawings
for
the telescope housings and support structures.
--------------------------
Isolation Group -- M. Fine
--------------------------
Seismic Design (Mike Fine)
--------------------------------------
1. Scissors Table Testing:
The scissors table testing is nearing completion. A modified
Aluminum table
was cycled with new Aluminum Bronze pins (comparable to the final design).
The results showed very similar damage (wearing nearing the fingers)
as was
previously observed with the original Brass pins. This conluded that
the
scissors tables will be made with SST.
2. Coarse Actuator Hardware:
One of the two coarse u-v flexural pivot assemblies
was damaged during
transit to Hytec from the heat treatment facility.
The components arrived
in a badly damaged box. Both pieces had been
wrapped in bubble wrap that
was completely destroyed during transit.
The hardware will be straightened
out and repaired and then compared with the undamaged hardware. Both
pieces
will be assembled into the 1st article next week.
3. HAM Actuator Alternate Design:
Hytec has placed orders to purchase the scissors table manual adjustment
hardware. The new hardware is on order.
4. Scissors Table Procurement:
The RFQ's for scissors table have gone out to 5 vendors today, and
the
bids are due back on 11 Sept.
Suspension -- (Janeen Hazel/Mark Barton/Mike Fine)
-------------------------------------------------------------------
1. LOS Assembly Fixture:
The PAM brackets appeared dirty after ultrasonically cleaning them
twice
and baking them. Janeen went to Schober's on Monday and Schober's said
that
Teflon sometimes comes with black marks in it. We decided to have Schober's
make another set (~$1000). Janeen submitted the change order and gave
Schober's a verbal go-ahead, warning them about inspecting the Teflon
stock
and maintaining clean surfaces in and around their machines.
---------------------------------------------------------
Detector Systems Engineering -- D. Shoemaker/D Coyne
(WBS 1.2.1.1.9)
---------------------------------------------------------
Global Diagnostics System
(Rolf Bork, David Shoemaker, Daniel Sigg)
--------------------------------------------------------------------
No activity this week.
Physics Environment Monitor (Alex Marin, Matt Smith)
-------------------------------------------
We started to write the detailed PEM installation
plan for the
2km IFO to be included into the general integration plan. Dennis
and Rolf are helping to achieve this goal. In connection with this
plan,
Matt wrote a preliminary document with the labeling scheme for
all the PEM cables.
Stan and the Hanford crew started to plan the first
4 RGA PEM
tree installations.
The geophones used in the 1st article test are back
to the
manufacturer for repairs. Next week, David and Alex will start a new
round of tests using geophones and accelerometers (possible
seismometers as well if available). We are also annalizing some data
which
are relevant for the HAM design in general and for PEM in particular,
data
acquired during the HAM tests (with Gaby Gonzalez and Mark Barton)
Shourov works on a new portable DAQ system for seismometers
and
magnetometers, which include CDS type of antialiase filters (with fixed
cutoff frequency), which might become a candidate for the filters
required by the PEM DAQ. Also the high sensitivity magnetometer and
its
amplifier (designed by Rai and Shourov), which need some more work,
will be the principal candidate for the PEM external (remote) magnetic
field sensor.
To complete the list of people working with the
PEM group, Daniel
Sigg (LHO) and Ray Frey (U. of Oregon) are finishing the weather monitor
installation. Ray and Alex are due to finish the cosmic ray monitor
design by Oct, while the U. of Oregon group is finishing the design
of the
magnetic coil exciter for PEM.
Optical Contamination (Daqun Li)
--------------------------------
After seeing a trend of ~ +0.023 microseconds/day which leads to about
1 ppm/week decrease in total loss for both cavities 2 (with viton)
and 3 (empty) by last Thursday, this week the cavity decay constants
of both cavities came down to what they started two weeks ago.
This
may result from a powerful earthquake occurred
on last Thursday
afternoon (scale 4.4), which swung all the suspended
cavity spaciers
bounding between wire holding sticks, which may result in a possible
relative position change between cavity mirrors. So under the
help of
the earthquake, we may now investigate different mirror areas.
We
planned to keep taking data to see whether or not to repeat the same
trend in two weeks (hoping there will be no more strong earthquakes
in
two weeks!).
Writing up a short documentation summarizing the contamination test
results of kapton, teflon and vacseal which will be available shortly
in DCC.
-----------------------------------------
Control and Data System -- R. Bork
(WBS 1.2.2)
-------------------------------------------
PSL
-----------------------
1. All known modifications to the PSL hardware are complete.
2. All servos have demonstrated good locking characteristics both
individually and simultaneously and have stayed locked for days at
a time.
2. Documentation is at the 90% level and progressing well.
3. Currently we are in shakedown mode prior to beginning endurance
runs and
final test data collection.
4. Shipping of PSL items to the site is to be complete next week.
Suspension
-----------------------------
- Completed kapton vacuum cables and connectors for IOO and delivered
to
Yehuda
for cleaning.
- Testing of SOS controllers continues.
- The whitening filter for the suspension DAQ monitors has been defined
and
the
schematics for the board started. The final filter is a 30 Hz HPF,
followed
by a
6th order, 0.5 dB ripple chebychev HPF, followed by a 2 pole 1KHz
Butterworth.
The in-band gain of the filter is 46dB.
IOO
------------------------------
- Began testing of WFS demod board hardware and software.
- Rerouted optical lever photodiode board to accomodate 45 deg rotation
of
the
quad PD. New boards should be fabricated and stuffed in 2 weeks.
- Continued system diagrams for IOO ASC system. They are ~80% complete.
Once IOO
LSC system components are added the fabrication of the cross connects
will be
started.
| CR-980035 | WBS 1.1.4 | Livingston Electric Power for FY 1999 | G. Stapfer |
| Action No. | Description | Responsibility | Assigned Date | Due Date |
| 1 | Prepare Operations Work Plan Budgets for FY 1999 Proposal | Lindquist | August 6, 1998 | September 18, 1998 |
| 2 | GSA Vehicles for Hanford | Chargois | August 6, 1998 | September 10, 1998 (see below) |
| 3 | Vehicle Safety - Incorporate into Orientation Process | Coles, Raab | August 6, 1998 | Complete |
| 4 | Proceed with Credit Cards for Sites | Jasnow | August 6, 1998 | September 10, 1998 |
| 5 | Determine how we pay BO tax due State of Washington | Jasnow | August 6, 1998 | September 4, 1998 |
| 6 | Research FMCS Specification | Matherny | August 20, 1998 | Complete |
| 7 | Funding for Louisiana Access Road | Stapfer | August 20, 1998 | September 17, 1998 |
| 8 | CCB Action for Construction Funds for Livingston Electric Power | Stapfer | August 27, 1998 | September 4, 1998 |
| 9 | Move Responsibility for Hanford Travel to Hanford | Jasnow | August 27, 1998 | September 11, 1998 |
| 10 | Procedure to Cover Late Charges for Invoice Payments | Jasnow | August 27, 1998 | September 4, 1998 |
| 11 | Property Tags for CDS Racks | Chargois | August 27, 1998 | September 11, 1998 |
| 12 | Viewgraphs for NSF Telecon | Jasnow/Matherny | August 27, 1998 | September 4, 1998 |
Assisted the Optics Engineer with the shipment of a Beamsplitter SN: 2ITM04-C to Research Electro Optics (attn: D. Ness) located at Boulder, CO. Scheduled delivery date of 8-19-98. Delivery confirmation received. (Acct # 5F514)
Assisted the Optics Engineer with packaging and shipping of several pieces of expendable items to the LIGO Hanford Observatory (attn: D. Cook/H. Armandulo) scheduled delivery date of 8-24-98. Delivery confirmation received. (Acct # 5F514)
Assisted the Optics Engineer with the shipment of two (2) Beamsplitters to the National Institute Of Standards and Technology (attn: C. Evans) with a scheduled delivery date of 8-18-98. Delivery confirmation received. (Acct # 5F514)
Assisted the Computer Systems Administrator with packaging and shipping
of two (2) Motherboards for repair to Micron Electronic Inc.(attn Material
Recovery Department) schedule delivery date 8-24-98. Delivery confirmation
received. (Acct # 5N510)
Composed a letter to the General Services Administration (GSA) to acquire
two (2) pick-up trucks for the LIGO Hanford Observatory, received confirmation
that one vehicle will be available within a week, and the second vehicle
will be available approximately 9-15-98.
| C | Contractual/Procurement | 7 |
| D | Drawings and CAD | 18 |
| E | Engineering Documentation | 4 |
| G | Graphics/Presentations | 0 |
| L | Letters | 1 |
| M | Management/Policy | 0 |
| P | Publications/Formal Notes | 0 |
| T | Technical Notes, Informal | 0 |
>From: James Rianda <jrianda@ligo.caltech.edu>
Created newly edited version of Project Level One Milestone chart for use at monthly Project Controls meetings. Chart only details current unfinished milestones and should more easily convey new schedule developments in the project.
Produced monthly update worksheets for Detector and Facilities schedules. Distributed and expect updates to begin returning after Sept. 2nd.
Electronically archived all IPS1, IPS2. Problems encountered transferring files. Problem resolved and schedule is now archived.
Began preparing for ISC and Hytec updates, creating templates and preparing reports.
A meeting is scheduled for Monday, August 31, to finalize agreements on the use of the purchasing credit card at Hanford. Meanwhile, Jill Berry has been enrolled in the credit card reconciliation class to be held at Caltech on September 10.
Negotiations have been completed with the selected mechanical maintenance contractor at Hanford, Siebe, Inc., for the required services, in the fixed price amount of $66,300 for the first year. This contract will be sent to Siebe for signature early next week.
The FY99 ops budget for Livingston came closer to getting in line with agreement to infuse construction funds for half the power costs, in accordance with the model at Hanford. This has reduced the gap between the budget and available funds by more than half. Final resolution is expected during the visit to Livingston by Barry Barish and Phil Lindquist during the week of September 14.
Twenty-eight subcontractors have been reviewed. Previous estimates indicated that open commitments were corrected (reduced) by $15.8 million as of the end of July. This was confirmed by the Financial reports that showed a decline in the open commitments from $40 million to $24 million.
More recently the audit team has been checking beginning balances totaling $10.5 million in the various LIGO accounts. Their analysis indicates four kinds of activity that can create a beginning balance (as opposed to recording costs direct to a subcontract line).
1.4.3 Systems Engineering
1.4.3.1 Systems Engineering & Integration (AL, BB, CC, JK, DC)
__Analyses: Analyzed the BT bakeout preliminary data to determine the
BT thermal time constant as it is thermostatically controlled. Result:
tau ~ 5 hours.
Lazzarini met with Althouse, Weiss, Williams and Sears (at different
times) to discuss how the BT Bakeout database (which will grow to ~
1 -
3 GB) can be archived and accessed via the internet.
__Reliability:
Continued efforts on the CDS Control and Monitoring System (CM)
Reliability Prediction Report.
Fault Tree structure for CM at Washington and Louisiana Observatories
are complete.
Trying to obtain substantiating reliability data from JPL on Sun
Workstations, PCs and other network peripherals. No response
has been
received from FORE Systems and SUN Microsystems to my request for
reliability data.
__Integrated Layout/Drawings:
SEISMIC BALANCE WEIGHTS
Prints are with vendors for quote. Expect to have
prices by
9/2/98.
CABLE TRAYS
Cable Tray drawing & specification packages are
just about
finished, ready for release for
fabrication.
ELEVATED PLATFORMS
Preliminery design has been started.
1.4.3.3 Modeling & Data Analysis (KB/HY/AL)
Hiro:
Adlib:
* Implementated and debuged Jump-and-Sum method developed by
Biplab for
the fast simulation of the Recycled Micelson cavity. Almost
completed.
* Validation of cavities using primitive mirrors:
Recycled Michelson
completed, and the full LIGO configuration test started.
Alfi:
* Unconditional saving of all files when Save is selected from
File Menu.
* Improved the auto detection of modified pieces.
* Fixed
problem of removing a port that had connections.
* Started to rethink
part of Alfi to simplify the code. Started work on
simplified parser code.
ALI:
* Implemented primitive printing. It only supports default
printer and it
assumes the printer can handle postscript.
* Make use of label
information when supplied to provide better labeling
of data points. * When a user specifies a data file, it
become the
default data file when
opening a new function panel.
Kent (progress over a period of two weeks):
KB benchmarked FFTs on a 400MHz Pentium II against a 600MHz Alpha. Both
were running Redhat 5.1 and all code was compiled using EGCS/GCC
compilers. The performance on the two machines was found to be
proportional to the clock speed, an interesting result given the
floating point reputation of the Alpha. It has been pointed out that
the GCC compilers have received more attention and hence have better
optimization on the Pentium processors.
KB did a comparision of 3 public domain compilers on the pentium for
carrying out FFTs. These were GCC, EGCS and PGCC. The last is reported
to give about 30% better performance on pentiums than the GCC and EGCS
compilers. However, KB saw no dignificant performance differences
between these compilers for the FFT algorithm from the FFTW package.
KB put in a purchase request for an AltaCluster housing 16 333MHz
PentiumII processors on 8 motherboards. The benchmarks KB carried out
between the 600 MHz Alpha and the 400 MHz Pentium II suggests that
this
AltaCluster will give better performance at ~$1K less cost than an
AltaCluster housing 8 533MHz Alpha processors which the company also
provides. This switch in cost effectiveness is primarily due to the
recent cost increase of the Alpha line. The Intel version of Linux
is
also more stable and better optimized which will allow for better
performance at the level of the OS as well as with the compilers.
KB met with John Salmon to discuss his SDF data format and how it might
best evolve to meet LIGO's needs for a lightweight data format in the
LDAS. KB would like to be able to base the distributed data objects
that are shared between processes on a representation of the SDF/LWF
which is in the form of a C++ object. This would then make the
extraction of data objects from the system to the end user more
transparent of a translation. John has agreed to go off and add support
for multi-dimensional arrays and a data model that supports
distribution of the format. KB and JS will meet again in a couple of
weeks to discuss this added functionality.
KB attended the LSC meeting last week and presented a summary of the
LDAS Software architecture to the ASIS sub-group. The presentation
included discussions of various "proof of concept" demos that have
were
quickly put together by KB, PE and DF the day before leaving for the
meeting.
KB identified a problem with plotting using one of the high level
widgets for X-Y datasets in TCL/TK 8.0p3 on the Redhat Linux (Intel)
workstations. This is a scaling problem that is related the the window
manager on the Redhat Linux workstations.
KB worked with Ehrens to port his TCl/TK code to Windows98. This revealed
several system dependent coding practices which PE then removed form
his code.
KB recieved word from Alta Technologies, Inc. That all alpha
motherboards had doubled in price last week and that the 8 cpu
"mini-beowulf" boxes had increased in price by 50%. The current box
has
8 533MHz Alpha CPU (motherboards) 128MB or RAM, 5GB of disk on each
motherboard, power, fast ethernet switch and goes for approximately
$26K. KB called Alta's sales representative here in LA and asked what
the current pricing for pentium based "mini-beowulf" boxes is today.
KB
received an email stating that a box with 16 333MHz PentiumIIs on 8
motherboards would with the same memory configurations would go for
$25K. KB has asked Alta to look into benchmarks on this platform using
FFTW code KB provided to Alta in the past. The Pentiums are max'ed
out
with 512KB cache while the Alpha's support up to 4MB caches which is
the downside of the Pentiums. However, the pentiums have superior
compiler optimizations and the OS (Linux) is more stable on the
pentiums. It will be an interesting discussion about which one
is a
better solution (if either) for LDAS hardware.
Phil Ehren's Report:
* Discussed immediate requirements for the generic.tcl
module for the generic API with Dr. Blackburn.
* Discussed exception message format with Dave Farnham.
* Implemented the low level logging functions for the
generic API including Log creation, Log entry, and Log query.
Began
to implement Log viewing using the HTML browsing functions already
developed.
* Thought a little bit about the user request FIFO
structure, but didn't do anything about it.
* Implemented a minimal working HTML based help system and
prepared a sample document demonstrating the subset of HTML
available
(gif support, local hyperlinks, lists). I am anticipating
support of
most of HTML 2.0.
* Began to test the Tcl socket facilities and to compare
the behaviour of multiple master interpreters vs slave interpreters
by exercising them through *Expect* scripts.
* Continued to test various configurations of interpreters
and to refine event an exception handling facilities which will
be
used in the LDAS Generic API (?).
* Evaluated several freely available visualization packages
with Tcl/Tk front-ends. Lots of flash for the most part
without much
readily available analytic functioning - transformed data without
axes always make me nervous!
* Began testing code on Linux and windows (development is
on Sparc), and found some minor platform dependent problems.
some of
these were solved immediately by applying built-in Tcl platform
independent functions, others, related to window manager behaviour
may need to be solved with preferences settings declaring specifics
about the window manager. I will try to avoid making this
the users
responsibility!
* Began some tentative benchmarking of tasks performed in
multiple master interpreters and multiple slave interp- reters
in
order to identify performance "gotchas".
* Discussed the wrapping of the "Object Space" library
with Dave Farnham.
Dave Farnham's Report: (May have some overlap with last week due
to
email problems)
I have updated the c++ code for the generic API to use the most recent
release of the FCL library (v1.00). The code is capable of
sending/receiving the following FCL objects through socket
connections:
FclHeader, FclAdcData, FclDetector, FclEndOfFrame, FclMsg, FclHistory,
FclRawData, FclProcData, FclSimData, FclSerData, FclStatData,
FclTrigData, FclSummary, FclBasicModule, FclDimInfo, FclVect, FclTime,
FclLocation & FclArmAzimuth.
I have also been testing the most recent snapshot of the egcs compiler
from Cygnus which supports namespaces.
Finally, I have been commenting/documenting the procedures provided
to
the Tcl layer and adding more robust error handling.
One of the responsibilities of the generic API is to handle socket
communication between different computers. I have finished writing
the
c++ code to handle this. These commands interface with thc Tcl
layer
and allow one to manipulate sockets (including creating
sockets/servers, connecting sockets, obtaining information about
connections, etc.). Many of these commands may take a variable
number
of parameters. Also, error handling has been instituted such
that
these commands generate standard Tcl exceptions when an error occurs.
I have also been working on the shutdown/restore commands for the
generic api. This is nearly complete. When the c++ portion
of the API
receives the shutdown command, it stores the state of all of its
connections ( flushing all of the streams ) and then closes them. When
the restore command is received, the API recreates all of the
connections and restores them to their previous state.
I installed a beta version of the EGCS 1.1 C++ compiler to test the
support of namespaces, which are a part of the ANSI standard but have
not been supported in earlier releases.
I wrote commands for the TCL layers to send "all" the FCL class objects
in the previous version of the FCL library. WM has released a new
version of this library and some additional classes will need
send/receive implementations once I begin to work with this version
of
FCL.
1.4.4.2 General Computing (LW/TE)
MIT: Nothing to report.
Livingston:
1. The PC from HPC arrived in pieces. Mark Coles is
resolving the issue with HPC.
2. Julien S. is working on the setup for her SUN Ultra30.
Hanford:
1. Installed and licensed Sun WorkShop on the server. We
now have C, C++, Fortran77, Fortran90, and Pascal compilers.
2. Partitioned the 18GB external disk into 4 4GB partitions.
Moved
all the user accounts into the partitions. Now have 2 partitions
with
up to 1GB of storage space per user and 2 partitions with up to 200MB
of storage space per user. Doing this still leaves us with the
9GB
disk for expansion.
3. Started planning which files to move in order to free up space
in
the server's root and usr partitions, both are 98% full.
4. Opened several new user accounts for visitors. Helped
with several
network problems. Followed up on several orders and called around
for
quotes for several other orders. Worked on accouonting for expenses
so
far this year and projected expenses for next year.
CIT:
1. (Barbara K.)Investigated features and tools of Oracle8 using the
Oracle web site. Also spoke with the folks in the Seismo Lab
who are
using Oracle to record and archive seismic data.
2. (Barbara K.) Put the LSC transparencies on the web site. Made
several other quick website changes.
3. Barbara K. attended a brown-bag-lunch talk at JPL about web
graphics.
4. Installed solaris 2.6 in gemma (old Manx system) to be used at 40
meter. One monitor is needed with the system to be able to run simple
applications like email.
5. (Suresh) Making a list of Ligo systems that need to be upgraded to
solaris 2.6. Based upon this list we will priorities those machines
that need immediate updates.
6. Prepared purchase orders for two gateway PCs.
7. (Suresh)Helped moving some systems to new offices of some LIGO
memembers (Larry Jones, Fred Asiri and Ricardo Delsalvao).
8. (Suresh)Taking care of daily backup of gsparc
9. We took a big hit on PC problems. Liz, Irene and Cindy have had
their PC's replaced and work is continuing on trying to get the new
ones loaded with the items the users had on their old PC's. Samantha
is
also working on the PC connections for the people that have moved
locations in the basement. Micron replaced their bad unit and
the new
unit was installed at Wilson House.
10. We have upgraded the DNS services on LIGO to match the changes made
at Caltech.
11. Resolved a number of patch issues and installed the latest versions
on sirius.
12. Working on maintenance contract issues with SUN. We are getting
a
few items taken off that the observatories are now putting into their
budget.
Due to the total crash of my computer on Monday morning, and the troubles encountered with the swapped computer on Tuesday and Wednesday, my productivity was greatly hampered. I was only able to work between down times or on other non-computer work.
Arranged and processed the paper work for 12 trips to various locations.
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 for members of the staffs 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, terminations and the processing of Vacation/Sick Leave accounting.
Please note that I will be on vacation next week, August 31st through
Labor Day, September 7th. I'll be back at my desk on Tuesday, September
8th.
Elizabeth K. Wood
Oversaw the moves of various people in the basement of Bridge Annex. Found out a large magnet, used in experiments in the ‘30s has lasting effects even in the ‘90s. Those who moved: Larry Jones and Fred Asiri are now in room 355 WB, Cindy Akutagawa is in room 2966 BA, Dorothy Lloyd is in 31 BA, and Michael Butler and Britt Leonhardt are in room 32 BA. Their phone numbers moved with them.
Dealt with various employment-related projects including relocation and terminations.
Attended part of a story-boarding discussion on how undergraduates will
be employed under the new systems.
Rita Torres
For I. Petrac did change order No. 2 to Mid-Columbia Engineering, change order No. 3 to Veeco Corp. Did letter to Smithsonian Institute Re: PO close out. Did letters to bidders of RFQ IP-301 to notify of award to Sun River Electric Services for Cable Tray Fabrication & Installation; also did PC277770 with Sun River. Prepared RFQ IP-303 for Scissors Table Assemblies.
For E. Jasnow did letter to NSF Re: Request for approval of contractor for Hanford Building. Did PC277583 with George A. Grant, Inc. for the Hanford Building; submitted for NSF approval. Did RFQ EJ-302 for Fiber Optic Trunk & Analog Phone Line
Installation at Livingston; FedExed to bidders. Did change order No. 2 to Molding Solutions
For P. Lindquist distributed end of June Progress report, FedExed to the NSF. Also distributed Operations Budgets Analysis.
For W. Tyler updated safety procedure document list, and did edits to two procedures.
For D. Coyne copied and distributed a DCN. Arranged conference call for two meetings. Met with I. Baldon to discuss travel desk details as she prepares to leave on vacation.
Dorothy Lloyd
No Report. Dorothy was ill for two days. Upon her return she moved into
new quarters.
For additional information about this report, contact sanders@ligo.caltech.edu