AEI-Potsdam: Bose, Chassande-Mottin, Mohanty, Sintes
     Caltech: Drever, Kells, Lazzarini, Marka, Mours, Shawhan, Whitcomb, Yamamoto, Zweizig
     Carleton: Christensen
     Dublin: Ottewill
     LHO: Gustafson, Landry, Ottaway, Raab, Savage, Sigg, Weiss
     LLO: Daw
     Loyola: McHugh
     Michigan: Riles
     MIT: Adhikari, Sylvestre
     Oregon: Rakhola, Schofield, Strom
     Penn State: Finn
     Syracuse: Penn

Issues related to next week's E2 run  (Special requests? Questions?) - All

• Items posted on agenda page:
• Reduced data set channel selection (revised baseline) (D. Strom)
• Interferometer configuration plans (S. Whitcomb)
• Summary of special shift requests and measurements to carry out + Schedule (D. Sigg)
• Travel plans of participants (K.Riles)
• Sample end-of-shift questionaire (J. Zweizig)
• The baseline reduced data set gives a volume rate of about 1.2 MB/second which will make it hard to store all collected E2 rds samples on fortress disks. Investigating teams were asked to send any remaining channel requests to KR over the weekend. The standard RDS channel list and any special lists are to be given to Daniel Sigg on Monday. So far only the lock loss investigation has requested channels not readily incorporated into the standard list.
• Note added on Monday: Three channels lists have been sent to Daniel: Standard RDS, RDS for lock loss studies with 1 arm locked, and RDS for lock loss studies with 2 arms locked and/or the power recycled Michelson cavity locked.The lock loss lists are for extra channels to be added to the standard RDS during time periods of order(1 shift). Data volume rates (Bytes/second)for these lists are

Baseline RDS(standard)       = 1,411,392
Extra RDS(lockloss1)         =   328,704
Extra RDS(lockloss2)         = 1,254,400
• An earlier e-mail from Stan Whitcomb concerning likely interferometer configurations was briefly summarized. The run will focus on two stable configurations: single-arm and recombination with both arms locked (no recycling mirror). An effort will be made to take data with full recycling, but for only a shift or two at the end of the run.
• Investigation leaders were urged to look over Daniel's proposed schedule of shift activities and give him feedback. The schedule starts the run with several days of recombination running, then a day of parameter studies, followed a couple of days of one-arm running.
• All E2 participants were urged to send any travel schedule corrections to KR and to give feedback to John Zweizig on the proposed end-of-shift.

• John has released a preliminary version 1.2.3 with recently contributed code from Daniel Sigg (power line monitor), Szabi Marka (GPS time ramp monitor), Benoit Mours (data summary set generator), Sergey Klimenko (wavelet tools), and Dave Chin/KR (servo instability monitor). Tweaking of the code is ongoing.
• John urged authors of new monitors that are to run in background to make sure he has useful configuration files, environmental variable settings, and any command line sequences needed to start the monitors up. Brief documentation of the monitors should be provided to Szabi Marka.
• Investigation team leaders were urged to decide what monitors they will want during the run and to make sure John knows about them, including how to run them.
• He has tried running 13 DMT monitors in parallel on the sand machine to verify that cpu and memory load is indeed approximately linear with increasing monitor processes. No surprises were seen, but more rigorous testing with recently contributed monitors will start over the weekend to help shake down the system.

• Line noise:

 
• B. Allen, A. Ottewill (Adrian reporting)

Nothing new to report on installed code.
 
• S. Klimenko

Sergey will be present during E2 and will be using his and Daniel's line monitoring code as part of the line noise investigation. His own DMT monitor will be run in foreground using root macros. He requested that voltage monitor channels be available during the run.
 
• A. Sintes

Alicia will be visiting the U. Florida in December prior to the GWDAW meeting to meet with Bernard Whiting to sort out unresolved discrepancies they find in the performance of her line removal algorithm.

• Characterizing seismic noise:

• E. Daw

Despite much effort and consultation with John, Ed hasn't solved the problem reported last meeting of spontaneous monitor crashes after a few hours of running. He now suspects a decimation routine in the DMT infrastructure to be at fault. He will be present at LHO for the last several days of E2 and will be looking at his seismic monitor's output from Louisiana in the meantime.
• Inter-channel correlations:

• B. Allen, A. Ottewill (Adrian reporting)

New dmt code has been given to John to help with the correlations investigation during E2. The new code can be run as a background monitor. Nelson Christensen will provide John with an updated configuration file for the monitor on Monday.
• Bilinear cross-couplings

 
• S. Penn

Steve has run into new problems installing the DMT on his powerpc linux box, despite having successfully installed an earlier DMT version. He has consulted several experts on linux DMT (JZ, Ed Daw, Ed Maros) and believes the problem arises from a powerpc assembler error. He will not have code ready in time for E2, but the non-Gaussian investigation will be based on post-run analysis, anyway.
• Operational state:

 
• D. Chin, R. Gustafson, K. Riles (KR reporting)

Graduate student Dave Chin has taken over the osc code and has delivered a revised version to John, including a background monitor for detecting servo instabilities. The parameters for the monitor's config file still need considerable tuning, which will be attempted during E2. The monitor does not yet talk to the monitor display manager, more development to be done during E2 by Dave who will be on site for two weeks. He is working now, however, (at Daniel's request) on a modification of the osc code to allow triggered dumps of data with run-time-definable duration and deadtime parameters. Dave hopes to have the code ready by the start of E2. The triggered data dumps should be immediately useful to the lock loss investigation and perhaps to other transient investigations.

• Bandlimited RMS

 
• E. Daw  (see above)

 
• Time / Frequency plots

 
• S. Mohanty (had to leave telecon early - reported later by e-mail)

No recent progress to report, getting back into the loop at AEI after move from PSU.
 
• J. Sylvestre

The TID program has been augmented to handle DMT triggers and to allow fixed thresholds instead of adaptable thresholds determined from the data. The adaptable threshold algorithm is cpu-intensive, while the fixed threshold version is much less so. The price, however, for that reduction is a one-time highly cpu-intensive calibration procedure to determine the fixed thresholds. Nominally that calibration requires two of the four cpus on, for example, sand or stone, along with 600-700 MB of memory for several hours. Julien will plan to carry out the calibration of PEM channels before E2 begins and will work with John to make sure that any calibrations of IFO channels needed during E2 do not create havoc with other DMT monitors.
Rai Weiss asked whether a test had been carried out to verify that all of the available DMT monitors can be run simultaneously. John said he would be doing that before E2 starts (see above). Rai also worried that the deluge of visitors to LHO during E2 would saturate available computing resources, online and offline. John said he would look into setting up an extra data server on the general computing system at LHO to reduce the load on the online machines. Visitors were urged to bring their own laptops to help reduce demands on computing. Rai also wanted to know who would be responsible to oversee run activities. The answer is Daniel and John who were urged by Stan and Rai to make ruthless decisions when necessary about sharing of resources and in curtailing activities (like gabbing and milling about in the control room) that interfere with efficient E2 running.
• Non-Gaussian noise

 
• S. Finn, G. Gonzalez (not present)

• Power spectral transients:

 
• S. Mohanty (see above)

.
• Servo instability:

 
D. Chin, R. Gustafson, K. Riles (see above)
• Event catalog:

 
• J. Sylvestre, R. Weiss (see above)

• Flickering optical modes:

 
No volunteer!!!
 
• Transient detection using adaptive denoising methods

 
• E. Chassande-Mottin (had to leave telecon early - no report)

 
• Impulse recognition:

 
• M. Ito (not present)

Rauha Rahkola believes Masahiro's code is working and will be running during E2.
 
• Magnetic field transients

 
• R. Frey, R. Rahkola (Rauha reporting)

This code should also be running (in foreground) during E2 for measuring both magnetic and seismic transients.

A.O.B.

• KR asked about the DAQ status at LHO since he had been unable to connect to the network data server in the morning. Daniel reported some flakiness with a frame builder disk drive. Stan said that Rolf Bork would be making a special visit to LHO starting on the weekend to try to resolve a number of recent DAQ problems before the start of E2.
• Next detector characterization teleconference: Friday December 1 at 11:00 a.m. EDT (8:00 PDT).