Caltech: Brady, Brown, Drever, Kells, Lazzarini, Marka, Sanders, Zweizig
     Dublin: Ottewill
     Florida: Klimenko
     LHO: Ito, Raab
     LLO: Coles, Daw, Zotov
     LSU: Giaime
     Michigan: Riles
     MIT: Weiss
     Penn. State: Sutton
     Syracuse: Penn, Saulson

S1 Preparation:

• Inteferometer configurations - F. Raab / M. Coles / R. Weiss

The sensitivities of the Hanford 2K and Livingston 4K IFO's are good, better than the 1994 40-meter and better than TAMA 300 across most of the interesting bandwidth. The Hanford 4K is only now getting into runnable shape and will likely be worse by an order of magnitude than the other two IFO's. All three instruments will be run in full recycled mode. Rai worries about the LLO 2K reliability, in part because of trouble with auto-locking scripts. The wave front sensing script works well, and the common mode servo script is pretty good, but the lock acquisition script needed first has trouble, apparently in the gain reallocation algorithm. as light increases on the photodiodes. During good periods, locking takes 15-20 seconds; during bad periods, a half hour is common.
Rai is also worried about the DMT infrastructure at LLO. Much work went on at LHO during E8 to improve monitors and train operators & scientists. Mark is organizing a DMT school a few days before S1 begins to bring people at LLO up to speed. Szabi, Ed and Natalia will give presentations. John is working to bring up the LLO DMT machines as "mirrors' to those at LHO.  Two of the new DMT blade machines have been installed in the LLO control room. It wasn't clear whether they had sufficient bandwidth to the frame builder to be used as is. John will look into this. At LHO, Fred reported that operators will be sharing knowledge with each other on DMT monitors they exercised individually in E8.


• Meetings - All

It was agreed that the daily telecons held during the E7 run were overkill. Inter-site telecons during S1 will be organized on an as-needed basis. Otherwise, there will be only the customary shift-change meetings three times a day at each site (not synchronized).
Gary announced that Albert will be official liaison between LIGO and other interferometer projects that may try to run in coincidence during S1. Albert offered to send a daily e-mail to these projects with a brief summary based on the contents of the observatory e-logs. Rai suggested stressing the limited duty cycle of the LLO 4K and its influence on when other interferometers should be alive.


• Calibration plan - F. Raab for M. Landry (circulated preliminary plan)

There will be a strong emphasis on preserving as much as possible of the LLO 4K livetime (expected to be around 30%). So calibrations will be done quickly, using Mike's new 5-minute auto-calibrator twice per day. In addition, two line excitations, one below and one above unity gain frequency, will be injected and tracked. It's likely that test-point sensitivity in the IFO control processors will require a hardware injection (e.g., function generator) at LLO rather than the usual digital injection. There will be dedicated calibration runs just before and just after the S1 run.  A dedicated mini-RDS will be written with the injected calibration signals. Mike requested there be an alarm sounded if the injected line excitations disappear. KR offered to look into setting such an alarm with ServoMon (but would welcome an alarm from LineMonitor which will track the line strengths anyway).


• Signal injection plan - S. Marka

Astrophysical test signal injection will be carried out just before and after the run, in coordination with calibration studies. In addition, if an opportunity arises during the day when both IFO's are locking well, more injections will be made.  Albert cautioned that the LDAS disk caches at the sites will just barely hold all of the S1 data. Additional data taken just before or after the run may have to be stored on tape. Mark suggested that a lot of space could be saved by not recording data during peak-noise conditions in the day at LLO. After some discussion, it was decided not to disrupt continuous data taking.
 
• Scimon shifts - Here is the current shift schedule. We still need to fill three expert slots at LHO and seven at LLO. Fred suggested moving the unfilled slots to daytime to make sure quiet times are covered. The duties for scimon shift takers have not been finalized. The list used in E7 is a starting point, but it needs updating. Ideally, shift duties will leave time for scientists to participate in S1 investigations (see next item).

 
• Scientific investigations - KR showed a list of S1 investigations, most of which have identified team leaders but which need more volunteers to flesh out. Interested persons should sign up.  All scimon shift takers for S1 will be e-mailed and encouraged to join an investigation.

Software Infrastructure Preparation:

• Status of DMT infrastructure 
  
  
• John Zweizig: What's new 
  This week has largely been taken up with getting the LLO DMT infrastructure into the same state as LHO at the end of E8. Two new blades are installed at LLO and most of the software running, although there is a similar problem with message passing as seen in E8 at LHO. John has received some post-E8 revisions to individual monitors and expects several more by the end of the day. In order to be incorporated into the weekend's lineup of tested monitors, code must be given to John no later than 4:00 PDT today.
  
  
• Szabi Marka: Global summary page 
  Szabi has received several key pieces needed for the global summary page, but is still missing various graphs, images and the "revolving" abbreviated summary pages for individual monitors.
  
  
• Dave Barker: DMT Trend viewing  in the data viewer (reported by e-mail afterward)
  DMT trends can now be seen together in the data viewer, but only four monitors currently produce the trends in a visible way.
  
  

• Monitoring of astrophysical search engine function and trigger rate - Duncan Brown 
  Duncan provided a sample summary page for the web viewer of search engine DSO status. A working version for monitoring the binary inspiral DSO should be ready by Monday. Persons on shift will be asked to check this page periodically and verify that monitors are still running. Warnings will be issued if a DSO is not keeping up with the data flow and an error issued if it crashes. KR requested that a warning be issued if the candidate rate found by a DSO exceeds a certain threshold.

Status of individual DMT monitors:
 

Dave Chin: LockLoss and ServoMon
The saving of DMT viewer history is now working for both monitors. All of the new LockLoss IFO state conditions are defined, including a new 6-value plot for the DMT viewer requested by Daniel.  The 2-week summary of livetime for Szabi is done. The thresholds to use in ServoMon still need to be set. KR will work on that at LHO next week. Dave is currently fighting a bug in the trend output, but hopes to have it fixed by the end of the day.

• Ed Daw: blrms and PeakMon 
  No changes to blrms. PeakMon has new Lorentian-shaped (broad) filters used in its histogramming. The DMT code has been checked into CVS, but the associated matlab scripts are still being worked on. Joe Giaime is helping define a set of cascaded histograms for display. Ed will need to run the matlab scripts on one of the DMT machines at each site.

 
• Masahiro Ito: glitchMon

Trends are now produced. Lock status, with latency, is checked. Plots for the dmt viewer are saved so that restarting the monitor does not lose the recent history. Masahiro is now working on the config file tuning.
 
• Sergey Klimenko: LineMonitor and WaveMon

LineMonitor is unchanged since E8. WaveMon is much more mature. It will be run on three channels ( for each of the three IFOS.Sergey showed  a summary of the documentation for this correlated (inter-channel) glitch finder. Sergey will check a new version into CVS later today.
 
• Szabi Marka: IRIG-B and TimeMon

Some small problems were fixed.  Szabi continues to work on documentation.
 
• Adrian Ottewill: MTLineMon and CorrMon

Both monitors have additional summary html information.  New code will be given to John shortly. Adrian will be at LHO the last 5 days of S1.
 
• Steve Penn: BicoMon

A new version of the program is more stable. The GUI now allows the user to specify frequency ranges directly, and sample pathology documentation has been added.
 
• Daniel Sigg: MultiVolt (no update)

 
• Patrick Sutton: SenseMonitor and RayleighMonitor

SenseMonitor has received a lot of attention since E8. The program now looks automatically at the right calibration files and tracks the strengths of injected lines to correct for drift since the last acquisition of lock (or monitor restart).  The monitor also has trend writing and a 2-week history (code borrowed from Dave Chin). In addition, a calibrated power spectrum is recorded to disk every 1000 seconds. 
RayleighMonitor now has working file I/O and an automatic image update for web page display (used by Szabi for global summary page).  There remains a problem if one tries to run the monitor in batch mode, since the graphics file output requires a window to be launched.i
 
• Natalia Zotov: PTMon

Natalia has run into a debugging brick wall and doesn't expect a working monitor run under the process manager for S1, but will run a private version for development on delaronde.
 
• John Zweizig: BitTest, HistCompr, PSLMon, and SegGener

Trending has been added to PSLMon (ZGlitch trigger rates and RMSBands power). SegGener now defines locked segments from the  new "run mode" OSC condition which uses the operator/conlog bits in the state vector.

A.O.B

• Next  meeting: Intersite telecon Thursday June 27 at 8:30 a.m. PDT.