E10 & S3 Planning:

• E10/S3 operations planning (Stan Whitcomb)

The calibration and injection team plans are in place. Stan will identify a local run coordinator (or two) for each site in the next week, persons to handle real-time decisions that can't wait until regularly scheduled telecons. The telecons themselves will be held frequently, perhaps daily, as we get started, but will probably taper off to once or twice per week, once things settle down. Stan will send out announcements later concerning run coordinators and telecon scheduling.


• Interferometer status (Rick Savage - LHO, Szabi Marka - LLO)

H1 is locking reliably, thanks in part to a nifty new alignment dithering script. The 95 Hz peak reported last week has been cured by changing the gain on the power recycling cavity servo. Inspiral ranges are now up to 1.6-1.7 Mpc (see sample spectra), after reconfiguring of the reflected port table. Large violin mode amplitudes remain and are not yet understood.
More troubling are AS_Q glitches centered on 150 Hz but affecting 50-300 Hz. These can come as often as every 20 seconds. Their source is unknown, but attention is now turning toward this problem.
H2 is far behind H1. The IFO is locking intermittently but recently had all 10 wave front sensing degrees of freedom locked. It is hoped to get the beam pointing servos working too. The transition to common mode feedback to the laser is getting better. No calibrated spectra have been made for a while, but that work is planned for the weekend.
Wall projectors for the figures of merit displays are getting set up now. There will be five projectors running in S3. Lock-breaking glitches are still seen from the liquid nitrogen dewar. We will probably just have to live with them during data taking.
Szabi had just arrived at LLO and hadn't spoken yet with the night crew, but he had the impression that things hadn't gone as well as hoped the previous night. LLO is having severe network problems.
• Scimon shifts - KR

KR is still looking for volunteers to take seven unclaimed LHO expert shifts, most of them occurring around the time of the LSC meeting at LHO. If volunteers cannot be found, the slots will be re-assigned, based on FTE counts.

S2  Investigations Report (investigation teams )

• Steady-state correlations (Nelson Christensen)
  Nelson reported that the main correlations work since the Hannover meeting has been creating a series of "movies" (avi format) showing how cross-bicoherence (between AS_Q and other channels) changes during candidate inspiral events. The movies show before, during, and after the glitches. There is a striking increase in the bicoherence during the glitch for many channels. KR suggested verifying that the increase is not strictly associated with the glitching AS_Q channel by looking either at other channels with no plausible connection to AS_Q or looking at the suspect channels with a time shift. Nelson agreed to look into this.
  Steve Penn volunteered to add requested channel pairs and frequencies found to be of interest to his config file for BicoMon, to be run during S3.

DMT Software Status Review:

 
• Status of DMT infrastructure

 
• John Zweizig: Version updates, deadlines, etc.

Nothing much has changed last week, but John expects much new code to arrive for installation between now and the October 15 deadline. KR noted that John had fixed the sick Hanford monitors reported last week.


• Status of DMT monitors




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

KR reported no changes in LockLoss/ServoMon since last week. SpecMon is being worked on to address problems reported in the M3 mini-run.


• Masahiro Ito: glitchMon (no report)



• Sergey Klimenko: LineMonitor and WaveMon 

Sergey showed results of a simulation to test the accuracy of LineMon's evaluation of line amplitude vs what can be achieved with a straight heterodyne. Histograms of errors show very comparable performance between straight heterodyning and LineMon's algorithm, based on a 16-coefficient resampling filter. Sergey felt that the simulation resolved the issue and made it unnecessary to implement a new heterodyne option in LineMon. KR urged him to to try to find the time to do so anyway, to put the issue completely to rest.


• Szabi Marka: IRIG-B, TimeMon, and ShapeMon 

No changes to IRIG-B or TimeMon. Szabi is adding channels requested by Robert Schofield last week to ShapeMon to watch for channel hopping. He thinks most will be straightforward to monitor for inconsistent spectra.
Szabi also mentioned that he now has a prototype of an alarm silencer for the DMT alarms page that allows a user at one terminal to silence particular alarms for that terminal.


• Tim Olson: SpectrumArchiver (report by e-mail)

Following a suggestion from M4, Tim has renamed the channels in the stored xml files with binning indicated so that retrieving one spectrum doesn't overwrite a spectrum of different binning. Tim recently purchased a solaris workstation and will use that for dtt development related to SpectrumArchiver.


• Steve Penn / Vijay Chickarmane: BicoMon / BiLinMon

Steve now has a new BicoMon version to monitor auto-bicoherence and cross-bicoherence for arbitrary frequency pairs and bandwidths, which he will try out in E10. Assuming the cpu load isn't too heavy (which isn't expected to be a problem), he will probably request several different versions be run during S3, where there will be one version per channel for auto-bicoherence and one version per channel pair for cross-bicoherence.


• Brian Stubbs: SuspensionMon (report by e-mail)

New config files are ready for both sites, although thresholds aren't final. Code has been added to insert column headers in the log file. KR didn't know whether a summary html file or minute trending would be available by the October 15 deadline.


• Patrick Sutton / Mike Ashley: SenseMonitor / LineAmp and RayleighMonitor

The latest SenseMonitor now tracks DARM gain and input matrix values. In fact, it is set up to allow config file specification of any channels that should contribute to the trended beta parameter. Two new plots are made available for the DMT viewer: the calibrated spectrum and the integrand vs frequency of the integral used to compute inspiral range. The new code has been tested and now seems bug-free. Patrick is working on documentation.
Szabi mentioned that his web display of SenseMonitor spectra now includes a cumulative integral of inspiral range too.


• Natalia Zotov: PTMon

PTMon now runs nicely on test frames. The code to produce a summary html file and minute trends is nearly ready. Natalia will be at LLO this weekend to do final testing.


• John Zweizig: BitTest,  DataQual, HistCompr, PSLMon, and SegGener

John is adding Robert Schofield's list of hop-prone channels to BitTest's lineup. He may need to do some parameter tuning to ensure that flatlining channels are properly detected. John is also finalizing the new SatMon monitor for inferring photodiode saturation.

A.O.B.

• Next detector characterization telecon: Thurday October 16 at 1:30 EDT (** note unusual day **)