LIGO Weekly Report

The LIGO Executive Committee Agenda for Monday November 6, 2000 will be:
(Meeting time: 10:30 am Pacific Time)

Special Announcements:

LSC Issues (Weiss)

LIGO I Construction/LIGO Laboratory Administration (Lindquist)

LIGO Weekly Site Telecon (Lindquist)

The list of current actions revised to reflect open actions assigned through November 2, 2000 may be found at ACTION LIST.

Web pages for the DCC give simple how-to's for document numbering, easy access to the latest on-line documents, and search capabilities for the DCC database. Take a look. . .

Progress is being made on auditing/sorting of drawings. Physical audit of Livingston As Builts, Construction, Final Design, Bid Set, and BTE drawings on file were checked. As of this day (there is still a considerable pile to sort through), all of the drawings were found on file with the exception of the Final Design Set. A database check was done as well on these particular drawings, with most already being in the database with the exception of the latest revisions of the BTE drawings. These revisions will be added to the database in the upcoming week.

Processed fairly high volume of electronic docs (mainly drawings) during this reporting period as well.

From: Ed Jasnow <jasnow@ligo.caltech.edu>

Dorothy Lloyd

Provided total amounts paid on all LIGO contract and blanket orders for fiscal year 1999-2000 to Acquisitions (Ruth) for DCAA auditors.
Continued to work on updating PO logbooks and general filing for Ed Jasnow.
Processed the usual requisitions, invoices and receiving on-line. For more detail, see "Cost Schedule Control Systems" report by Esther Cunningham.
Tracked and followed up on invoice problems.
Reviewed and recorded payments processed by Esther for the weeks of October 16 and 23, on contract summary sheets and LIGO database.
Continue to monitor contract and blanket order funding levels and notify task managers when supplements are needed.
Jim continues to do data entry in the LIGO database and help out in the DCC.

Irene Baldon

Twenty-two (22) new trips were started (including one trip using an old canceled ticket) and I have thirteen (13) trips pending final approval before tickets can be issued. I prepared a few Advance Requests and Payment Requests using the old system due to various reasons that excluded them from the new system.
Worked with a few travelers who had questions or needed further clarification on using or reconciling their new P-Cards. For the most part those having cards seem to be doing fine and fine the cards a convenience.
The P-Card Expense Report was revised by Michelle Thompson's group, and I made a few minor change recommendations. My re-revised version was sent to Michelle for final approval but as of this writing I haven't heard if it has been accepted. Once this new form is approved it will go over to Beth Moore's group to be put into FileMaker Pro form.
I worked with World Travel Group to clear some outstanding canceled trips that had tickets that either needed to be transferred to a new traveler or a credit due from the airlines. These are special cases and since LIGO is a big ticket user with the airlines involved the airlines are giving us a case-by-case special credit or exchange. We were able to get credit on two (2) trips (1 has been received and 1 is still coming) and the final two (2) trips were turned down. I put through Expense Reports on these and closed them out.
Worked on and completed thirty-four (34) Expense Reports. I have twenty-nine (29) Expense Reports to work on.
Prepared the Travel/Vacation Itinerary for the Week of October 30, 2000. Performed normal recording and filing associated with Travel and Reimbursement. Worked on several problem issues with Travel Audit in addition to the above listed. Also performed miscellaneous duties as requested by various members of the LIGO Project here at Caltech as well as from members of the staffs of each of the two (2) sites. I continue to do MIT's travel to the sites for installation activities and also to assist them wherever possible.

Rita Torres

I was in a Word class for two mornings. When time permits, I will apply what I learned there to create a LIGO template for letters and memos.
FedExed for signature Attachment Z to Dominguez Hills, and Attachments B, C, D & Z to GEO. Did Change Order No. 3 to Brian Loucks, obtained an Oracle number for it, distributed the signed requisition. Did change order No. 3 to Corning Inc. and change order No. 3 to University of Michigan, also formatted their report from email.
Chased various details associated with Pcard purchases. Ongoing activity: preparing a list to test the LSC email alias, hope to complete by next week.

Elizabeth K. Wood

Spent some time attempting to convert the proposal into a .pdf file. The error messages we are getting aren’t exactly useful---they tell us we have an error. So far all we know is that we have one error; there may be more we can’t get to. Lisa and Larry have been helping out. It seems that there may be a compatibility problem with Microsoft Office 2000 and Acrobat.

Advanced LIGO (Frey, Petrac)

Progress Period from 10.27 to 11.02

Accomplishments:

Advanced LIGO Project Controls meeting with Gary and Dennis. Focus on the completion of the Cost Book and Program Plan.
Weekly status meeting for Advanced LIGO Proposal Tuesday at 9:30am at SCR. (Last Meeting)
Proposal plan development for Advanced LIGO and Operations continues.

Issued data requests for progress data as of 11.03.00 that are due Friday.
Progress as of 10.27.00 was processed and posted.
Review of cost and schedule data is now ongoing.
Prepared plan by system for delivery dates of cost and schedule data to insure preparedness for NSF review in late January 2001.

Project Plan for the 40-Meter Lab Upgrade continues.

Issued data requests for progress data as of 11.03.00 that are due Friday.
Updated the plan with progress as of 10.27.00. Posted to site.
Attended 40-Meter weekly meeting scheduled every Wednesday at 2:30pm.
Continuing to push for a CDS procurement schedule.
Completed changes per Mike Smith.

Planning process for the LASTI project at MIT is in progress.

Integration into the program database completed.
Followed up with David for any changes and to begin updates.

Continue to test the Cost Book Tool.
Development of the Advanced LIGO Project Controls Guidebook continues. Continuing to write section on data dictionaries.
Project Web Site for posting schedule and progress related data continues to be updated with the latest and greatest.

See http://www.ligo.caltech.edu/~tfrey/index.html

Schedule 11.03 to 11.09:

Next weekly meeting will be Monday afternoon November 6 from 1 to 2pm regarding the planning and control of the Advanced LIGO proposal development.
Advanced LIGO Proposal

Will begin the effort of contacting each system leader to collect cost and schedule data. Hope to begin importing schedules and cost this coming week or next.

Will begin to update the LASTI Schedule with progress.
Plan to pursue the planning and scheduling of the staging buildings currently being bid and designed for HLO and LLO.
Will continue to update the Advanced LIGO / Ops Proposal Plans and incorporate any changes.

Will post progress report by end of day Tuesday with progress as of 11.03.00.
Will issue 17th week of status data to teams.

Will continue updating the 40 meter schedule and incorporate any changes.

Will post progress report by end of day Tuesday with progress as of 11.03.00.
Will issue 17th week of status data to teams.
Will finish revisions to WBS provided by Mike Smith.
Will meet with Alan on Monday to begin development of 40-Meter experiment tasks.
Meeting scheduled for Wednesday November 8 at 2:30pm at LSCR.

Continue to test the Cost Book Tool. Have a meeting with Barbara K. to discuss the Cost Book and the Resource DB.
Cost Book Tool development continues. Will be importing data for Installation so that Dennis Coyne can proceed with estimating.
Will continue the development of the Advanced LIGO Project Web Site.
Will continue the development of the Advanced LIGO Project Controls Guide Book. Finish section on data dictionaries and start on update process.

Anticipated Challenges:

Will not be able to produce a complete / accurate baseline schedule for the 40-Meter lab due to the lack of planning regarding the CDS. Per 40-Meter meetings, I cannot expect to receive this data anytime soon if at all.

Annual Report: There will be an Annual Report due as of the end of November. I will be requesting inputs from the usual bunch mid-December after the dust from the proposal has a chance to settle a bit. I propose to keep this report moderate in size, about the size and complexity of a Quarterly Report, to minimize the burden.

As a result of the high bids received on October 19 for the Livingston Staging Building, it has been decided to scrub the design and specifications for errors, and re-examine the scope to see if some items can be deferred to a later time. Since all four of the bids received were very close to each other, we will be issuing a revised solicitation package to all four bidders on November 15, and open their revised bids on November 30.

On October 25, Ruth Brambila and Ed Jasnow met with auditors from the Washington State Department of Revenue to discuss LIGO's obligations for use tax. The supervising auditor, Ms. Rhonda McKnight, stated that she feels that under the special legislation passed for LIGO, all materials and supplies purchased for the laboratory related to scientific or engineering work are exempt from sales and use tax. This is a far more liberal interpretation of the law than we have ever received. Under this interpretation, LIGO will receive a substantial credit for sales tax previously paid. Using this guidance, and with the hard work of Ruth Brambila, Esther Cunningham, and Michelle Thompson, we were able to file our quarterly tax return to the State of Washington on time. LIGO owed $1,551.24 in use tax for the third quarter. Additionally, there is over $2,000 in sales tax that we can recover from various vendors.

Quality/Safety (Tyler)

LIGO Hanford Observatory (LHO) Operations (Raab).

-Mirror mount resonances:
M. Landry and B. Butler have completed optical mount resonance
measurements. In a nutshell, they recommend that we avoid using the New
Focus hold-down forks and screw directly to the table with
several screws per mount. They also recommend using the Newport U100
mounts as a first choice and the Klinger mounts as a second choice.
Based upon their findings, we've designed new monolithic, bolt-down
aluminum mounts to support both Newport U100 and Newport SL25.4 (AKA
"Klinger mounts") mirror mounts. We've continued the concept and
designed similar mounts to support our polarizing
beam splitter cubes. These new mounts are presently out for
fabrication.

-Optical table legs:
R. Schofield identified the optical table legs as the source of a broad
peak in the PSL frequency noise spectrum centered around 50 Hz. We plan
to replace the six legs now being used with three fixed-height legs
after the E2 engineering run (see below). In the meantime, we are
attempting to reduce the noised induced by the present legs. We
fabricated 3/4" thick steel disks with slots that allow them to be
bolted to the bottom of the legs using the existing lock nuts. After
bolting the disks to the legs, the broad 50 Hz peak shifted to about 80
Hz at slightly higher amplitude. The narrow peaks in the spectrum
around 50 Hz were significantly reduced in amplitude. We have procured
some Dyad material that we will install between the bottom of the table
legs and the steel plated in an effort to reduce the amplitude of the 80
Hz peak.

The design of the new PSL table legs has been completed, and we are
awaiting the delivery of aluminum for machining them. The legs will
initially be tested on the 4k PSL as a way to reduce a 50 Hz (now 80 Hz)
resonance that has been observed. If successful, the design will be
applied to the 2k PSL after the upcoming engineering run is over.

-Frequency noise:
As reported last week, e2e modeling (carried out with B. Bhawal)
supported a hypothesis that optical table motion relative to the
suspended (and therefore isolated) reference cavity and modecleaner was
causing differential mode doppler shifting because the beams entering
the two cavities were oppositely directed. If this were the source of
the noise, we expected that it would be reduced if the reference cavity
were to enter from the other end so that the Doppler shift would be
common mode. With the help of S. Whitcomb and R. Graff, we redirected
the input to the PSL reference cavity so that it was incident from the
opposite direction. Surprisingly, we observed almost no change in the
frequency noise in this new configuration. We are now trying to
understand why.

-Fast channels
We are verifying calibration of PSL fast channels to be used during the
engineering run. The channels are: H2:PSL-FSS_FAST_F,
H2:PSL-ISS_ISERR_F, H2:PSL-PMC_ERR_F, H2:PSL-PMC_PZT_F, and H2:IOO-MC_F
(really an IOO channel)

-Electronics:
The cross-connect for the 4k PSL has been fabricated and wired, and is
ready for installation pending a final approval of the layout plans
from Caltech. The Eurocrate backplane has been wired and is also ready
for rack installation.

We are planning to monitor PSL frequency glitches during the upcoming
engineering run. We will also look for intensity glitches, although
without the intensity stabilization servo we will likely not have much
sensitivity.

LIGO Livingston Observatory (LLO) Operations (Coles).

OPTICS/COC/SEI INSTALLATION: The bellows replacement and realignment of ETM-x is completed. We've staged everything at the Y-end, and resurveyed all of the IAM monuments. Allen suspected a leak in the annulus if the dome on BSC-5, so we removed it and found a pinched O-ring. We've replaced it and are in the process of refitting the dome this afternoon. We'll setup the IAM instrumentation tomorrow and begin the realignment of ETM-y thereafter. Held a Laser Safety Quarterly Walkthrough Monday, and have been obtaining quotes and issuing Purchase Requisitions of the additional Commissioning equipment for LLO. (Jonathan Kern)

ISC (from Anthony Rizzi): Due to IOISC reboot, we lost pzt position (input beam alignment).
Sany and I reestablished pzt location (new bias settings: M1 pitch: .488 yaw: .16 M2: pitch .08 yaw: .26 ). We then
reestablished mode cleaner lock. We installed camera on roof of HAM1 using gimble mount done by Sany. We located both input
and returning beam on MMT1's baffle and adjusted. We had previously verified presence of input beam by moving SM1 and
observing the beam move (and no motion of it when MMT's moved), we now moved MMT2 until the return beam moved into hole. We
were aided in this by slight mirror oscillation that we still have to understand (probably due to non-optimal suspension control
settings). We then saw both the low power beam we had been seeing along with a much higher power beam out of the Faraday
port. The low power beam did not swing but the high power one did. We are now investigating a large oscillation problem in the Recycle
Mirror that started at the end of our observation. Once the beam is stable we will be able to make final periscope height determination.
We recorded the settings of suspension controls that allowed us to see the high power beam; they can be found in an e-log entry that
Sany will make today (11/2).

Detector/Technical Support (Whitcomb, Coyne).

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

1.1 LHO INSTALLATION & COMMISSIONING

2km Commissioning

We locked a non-power-recycled interferometer this week. To do this Matt added some more code. We have performed some diagnostics in this configuration. Among other things, we measured the displacement sensitivity to be 1e-15 m/rtHz with a minimum at a few hundred hertz. Between 40 and 90 Hz laser frequency noise still contributes to the differential mode signal.

We also began to set up the wavefront sensing system, which has undergone a few modifications since the one arm test. We are still trying to make sense of the signals measured on WFS1 using a single arm cavity. Rolf is helping us with some missing ASC test points.

PSL

Observed in the modecleaner servo "PSL Out Mon", the control signal to the VCO, was a constant ~200 mV DC offset. In addition a large number of high frequency peaks were present, which were also found to be present in the modecleaner transmitted light. For reasons I have not figured out yet, the modecleaner servo unity gain frequency could not be pushed higher than about 22 kHz.

The modified current shunt was installed into laser #103. A quick test of the shunt verified that it was functional.

The intensity noise of the modecleaner transmitted light was measured. Numerous peaks were observed in the transmitted light, the first at approximately 13.6 kHz. This peak was not present in the pre-modecleaner transmitted light noise spectrum, nor on the light after the three Pockels cells in the IO optics chain.

Tuning of the LSC photodetectors is about to start, after some delays because of other tasks that needed to be completed.

Lee Cardenas
Designing a mounting block to hold the pre-modecleaner. The block should kinematically locate the pre-modecleaner body.

DAQ

Trying to help Dave with EPICS data collection in light of the increased number of channels and rates in support of the second engineering run (E2). The numbers may dictate using multiple CPUs to collect this data, and I am working on how to do that. I should have some code ready by later today.

LIGO-TriNet

RF Frequency Distribution System

1.2 LLO INSTALLATION & COMMISSIONING

RF Frequency Distribution System

2.0 Other Engineering and Scientific Activities

2.1 Design/Analysis/Fab

Optical Metrology

Specification: 7 nm > Surface 1 sagitta > -25 nm


Optic	Coated(CIT)	Uncoated(CSIRO)	Notes
BS01	-36	-10.3	Hanford 2K
BS02	-28	-6	Livingston 4K
BS03	-15	3	Hanford 4K
BS04	-27	-20
BS05	-14	0.2	Mottled surface

BS05 was found to exhibit similar markings to those found on two of the 4ITMs and one SPETM (ie: optics from both polishers.) The exception is that instead of
streaks, which appear on the other optics,BS05 exhibits spots. The depth of the features are consistent on all of the optics at ~6-10nm. These features have been found on both coated and uncoated optics and have affected 10% of the LIGO optics. There has been some speculation that the marks are due to the cleaning process, but we have been unable to induce any changes on the one uncoated optic which is streaky. We have attempted to change the optic by using reasonable variations in the cleaning process. Both polishing companies have been questioned about this effect, both have seen the effect, neither GO or CSIRO know the cause.

PSL

ISC

Rich Abbott
We are doing an inventory to determine what to order for the remaining LSC components (Pentek clock fanout boards are certainly needed)

New OSEM Heads

Data Monitoring Tool

DAQ Antialiasing Filter

Global Diagnostics

2.2 Issues Concerns

40 Meter Interferometer (Weinstein).

Thermal Noise Interferometer (Libbrecht).

We are still making progress on our test cavities. The physics shop milled
the front panels for the NIM boxes for our satellite amplifiers, and we cut
the holes in the back panels for the input and output connectors. We
expect to have at least one working unit by the end of today (Thursday). We
are still making cables, lots of cables, to carry the signals between these
satellite boxes, the sensor/actuator heads, and the OSEM controllers.

We have balanced and aligned one test cavity, and we applied epoxy to the
wire standoffs to preserve this alignment. Diagnostic-optics mounts have
been cleaned and placed in the chamber, but optics have not yet been
installed.

LASTI (Zucker).

Seismic isolation installation (Zucker, Mason, Smith,
McInnis, Kruzel, Radkins, Grey.)

-HAM21: The clean room has been positioned over HAM20 and the doors removed.
The support tubes and support table have been installed and leveled.
We are currently installing bellows.

-HAM20: Still waiting on a couple miscellaneous small parts. We will
finish and leakcheck 21 and come back to 20 when they come in.

-BSC0: Mounting holes are marked;
we will start drilling for the support pier anchors
as soon as HAM21 is buttoned up for leakchecking (~ Friday).

Electronics: DHS, MZ and KM reviewed electronics rack size
and placement with Jay Heefner and Rolf Bork. They have
the green light to procure the DAQ/GDS infrastructure equipment
(plus suspension controllers for the first phase).

Data Analysis and Computing (Lazzarini)

LIGO II/Advanced R&D (Sanders)

Bill Kells:
1. Helped Jordan finish sapphire test mirror birefringence studies.
    Written up in paper draft. Also obtained crude measure of
    Rayleigh scatter in same test substrate.

2. Further MELODY-FFT cross comparison runs. This work is stalled at a
   disagreement cum interpretation issue with Ray B. Note that already
   a couple of MELODY version patches have resulted from this work.

	Packages	Faxes
In	38	32
Out	9	31

CR-000018	WBS 1.1.4	Curbing for Service Roads at Livingston	G. Stapfer
CR-000019	WBS 1.2	Additional Lab Equipment	D. Coyne

Exec. Comm. Agenda	Highlights	LSC	Administration	Hanford Observatory
Livingston Observatory	MIT	Caltech	Detector	40 Meter
TNI	LASTI	Data Analysis	LIGO II/Adv. R&D	Past Weekly Reports

Weekly Report for Week Ending November 2, 2000

Special Announcements:

LSC Issues (Weiss)

LIGO I Construction/LIGO Laboratory Administration (Lindquist)

LIGO Weekly Site Telecon (Lindquist)

From: Ed Jasnow <jasnow@ligo.caltech.edu>

Advanced LIGO (Frey, Petrac)

Quality/Safety (Tyler)

LIGO Hanford Observatory (LHO) Operations (Raab).

LIGO Livingston Observatory (LLO) Operations (Coles).

Detector/Technical Support (Whitcomb, Coyne).

1.1 LHO INSTALLATION & COMMISSIONING

2km Commissioning

PSL

DAQ

IO

LIGO-TriNet

RF Frequency Distribution System

1.2 LLO INSTALLATION & COMMISSIONING

RF Frequency Distribution System

2.0 Other Engineering and Scientific Activities

2.1 Design/Analysis/Fab

Optical Metrology

PSL

ISC

New OSEM Heads

Data Monitoring Tool

DAQ Antialiasing Filter

Global Diagnostics

2.2 Issues Concerns

40 Meter Interferometer (Weinstein).

Thermal Noise Interferometer (Libbrecht).

LASTI (Zucker).

Data Analysis and Computing (Lazzarini)

LIGO II/Advanced R&D (Sanders)