To: LSC-VIRGO Burst Group
    LSC Detector Characterization Group
    Enhanced LIGO and VIRGO commissioning teams
    LIGO-VIRGO Management

Concerning: Telephone meeting Monday December 8, 2008 at 11AM EST
            Discuss the instrument noise transients at low frequencies


INSTRUCTIONS TO JOIN THE CALL
-----------------------------

Direct dial number all participants: 1.404.920.6689
Conference Code: 95354572#


INTERNET ADDRESS FOR DOCUMENTS
------------------------------
http://www.phys.lsu.edu/faculty/gonzalez/lftransients/

(requires LVC username and password)



Low frequency (60-200Hz) background glitches in the interferometers
have been observed throughout the science and engineering runs but
their origin has not always been identified. The effort to understand 
the instrument backgrounds, similar to the "equinox" event observed in 
the data from H1,H2 and L1 in September 2006, is important for S6. 
Binary black hole coalescences which could produce 
similar waveforms are possible observational candidates for S6/VSR2.

The purpose of this meeting is to bring together knowledgeable analysts and 
experimenters to establish what is really known about these low frequency 
events. We would like to find ways to:

  1) improve the ability of the analysts to remove more black hole
     false alarms from the S6 data, and

  2) aid the experimenters in diagnosing and, hopefully, eliminating 
     them in the instruments.


           The Meeting Agenda
           -------------------

11:00 Brief introduction and logistics
      R. Weiss

11:05 What is known about the "equinox" event
      L. Blackburn

11:20 What is known about the instrument glitches between 60 - 200Hz
      with 3 - 10 oscillation cycles
      S. Chatterji, L. Cadonati

       a) amplitude and rates in the instruments
     
       b) correlation with instrument and environmental parameters

       c) variability

11:45 The effect of known vetoes on low frequency transients in the data
      E. Katsavounidis 

12:00 Open discussion 
      E. Katsavounidis and G.Gonzalez

       a) Suggestions for possible new correlations and vetos to study

       b) Possible mechanisms responsible for the low frequency glitches

       c) Procedures for feedback between the experimenters and the analysts

12:30  End