Present:

     Caltech: Stan Whitcomb
     Hobart: Steve Penn
     LHO: Rick Savage, Daniel Sigg
     Louisiana Tech: Natalia Zotov
     Loyola: Jennifer Barre, John Whelan
     Michigan: Vladimir Dergachev, Keith Riles
     MIT: Shourov Chatterji, Peter Fritschel
     Oregon: Ray Frey, Masahiro Ito, Isabel Leonor, Rauha Rahkola, Brian Stubbs
     Salish-Kootenai: Tim Olson
     Syracuse: Alessandra DiCredico, Peter Saulson

M3 Planning:

• Schedule reminder: M3 is a six-hour run September 13 18:00-24:00 PDT at LHO
• Daniel reported that H1 is doing well at high powers with record inspiral ranges (>1.5 Mpc) and is expected to be ready for M3. H2, however, is not in as good a shape, and there is further acoustic mitigation work planned next week on its dark port optical table. We cannot count on its running during M3, much less on it reliability.
• KR reported that roughly half of the DMT authors plan to attend M3 at LHO and half to attend M4 at LLO one week later.

DMT Software Status Review:

 
• Status of DMT infrastructure

 
• John Zweizig: Version updates, etc. (not present)

KR reminded everyone of John's September 10 deadline for DMT code changes to be run under the process manager during M3.
• Status of DMT monitors

 
• Dave Chin / Tim Bodiya: LockLoss and ServoMon/SpecMon

KR reported that the LockLoss config file has been updated with the new arm power transmission channel names for LHO. The new UP bit in the IFO state vector will be checked (instead of the CM bit) for defining "common mode feedback" as soon as Dave Barker confirms the bits are defined, a change that will affect several other DMT monitors. Minute trends will be provided for the LockLoss version of the state vector (previously visible only in the DMT viewer).  No code changes are planned for ServoMon, but the config file will be updated for new IFO conditions. KR will try out SpecMon before and during M3 and give feedback to its undergraduate author (Tim Bodiya). It is unlikely that SpecMon will be ready for background monitor production use in S3, but it may prove useful as an exploratory foreground tool during the run.
 
• Masahiro Ito: glitchMon

Shourov's linear predictor filter code has been implemented and is being tested, with a planned CVS update in a few days. Masahiro is working to set thresholds for new channels added to glitchmon at the request of Rana Adhikari.
 
• Sergey Klimenko: LineMonitor and WaveMon

There have been minor changes to LineMonitor, going into CVS soon. Following some discussion about monitoring of calibration lines, Sergey offered to add a heterodyne option to LineMonitor to allow comparison between fluctuations with the present tracking algorithm and the heterodyne method. He didn't want to promise readiness of the new option by M3, but believes it will be ready soon afterward. KR reported that Mike Ashley (see below) plans to provide a heterodyne measure of calibration line amplitudes/phases offline (non-DMT) for alpha coefficient determination during  S3.
More channels have been added to the WaveMon list, and a larger band is now examined (up to 4 kHz). The time stride has been lengthened from 30 seconds to 1 minute. Sergey is concerned that the CPU resources required will increase enough to become a problem, particularly given present limits on the DMT machine memory buffer size. He may need to split WaveMon into more than one program (as he has done already for LineMonitor).
 
• Szabi Marka: IRIG-B, TimeMon, and ShapeMon (report by e-mail)

All three monitors will be ready and running for M3. Szabi is also working on a new feature to permit temporary silencing of DMT alarms. It may be ready for testing in M3.
 
• Tim Olson: SpectrumArchiver

The new version of SpectrumArchiver will be up and running for M3 with an expanded channel list and coarse/fine resolution storage of fast channels. The new SAM-QFS file system should allow 24/7 storage of spectra, with old data rolling off onto tape, but still accessible on demand as it were still on tape. The DTT should be able to pull up the stored xml files, whether they are physically on disk or tape. Since the monitor will generate more than a TB / year at LHO, pure disk storage is unattractive. Daniel reminded everyone that in the long term, the resolutions used for different channels should be tailored to the channels, based on experience. He also suggested looking at schemes to save space when IFO's are out of lock, perhaps not generating the files at all, or generating a truncated xml file. PeterF suggested using the xml header to flag out-of-lock spectra. KR suggested including the IFO state vector in the header. Daniel was still concerned, though, about knowing which files contain good data without having to open the files.
 
• Steve Penn / Vijay Chickarmane: BicoMon

Steve expects his new background version of BicoMon to be ready next week with trending and dmt viewer display of the bilinearity index (global measure of bicoherence/nonGaussianity in AS_Q). This version will serve as a template for an expanded version with particular bi-frequency regions picked out, to be ready for S3. Steve will also provide an html summary page. There was some discussion of revising the name. In a later e-mail, Steve proposed BicoMon as the background monitor's name, with the foreground version (previously called BicoMon) renamed to BicoViewer.
 
• Brian Stubbs: SuspensionMon

Brian has been looking at an H2 event in S2 where side motion was kicked up on April 11, to set his channel thresholds. He expects SuspensionMon to be ready for testing in M3.
 
• Patrick Sutton / Mike Ashley: SenseMonitor / LineAmp and RayleighMonitor (separate phone conversation with KR)

The baton pass of SenseMonitor responsibility from Patrick to MikeA did not occur, as had been planned, with Patrick believed now to be on the road and unreachable until after M3. KR is very concerned about the situation, both for M3 and for later in the fall, and will be exploring fallback arrangements with Mike Landry for M3.
On a brighter note, MikeA reported that his matlab-based LineAmp program can determine revised alpha/beta coefficients for the entire S2 data set in about five days, and he expects to be able to speed the code up by a factor of 10 relatively easily. LineAmp used heterodyning to determine calibration line strength.
 
• Natalia Zotov: PTMon (report by e-mail)

Still trying to track down a bug associated with multiple triggers / frame. Will work on the problem next week.
 
• John Zweizig: BitTest,  DataQual, HistCompr, PSLMon, and SegGener (no report)

 

A.O.B.

• PeterF wondered whether the next version of SenseMonitor would account for the dynamically changing input matrix planned for S3. KR didn't know and offered to look into it. (Followup: this should be straightforward to implement, using same EPICS channel scheme planned to monitor changes in DARM gain.)