Subject: JEMX Monday Meeting 2004-06-21

Present: SB, CAO, CBJ, NL, JC, ILR, NJW

1) JEMX status
   JC and SB have made energy resolution analyses of Xe and Cd peak resp.
   and they come up with very similar answers: about 9% for JEMX1 and
   12-13% for JEMX2.
   
   It looks as if the local gain at the position of the FRSS sources
   drops compared to the overall gain. This is expected so CAO must
   introduce new reference channel values (time-dependent).
   
   The analysis of the Xe peak will continue e.g. to check whether the
   countrate is constant or at least scales with background intensity.

2) Crab count rates
   NL has started matching Crab count rates as obtained from the 'midisky'
   fitting and from the images. There is a reasonable agreement.

3) Midisky with improved collimator modelling.
   The introduction of fitting parameters for the collimator geometry
   in the light curve program has resulted in a collimator model
   that has been implemented in midisky. JC reports improved sensitivity
   for source detection as a result of that.

4) SVR status
   NJW does as much as possible before Thursday and then Peter Kretscmar
   takes over. Most of the new figures have been delivered, but text update
   and restructuring is needed.
   
   NL is making a energy resolution description for Astrid for Observer's
   Manual.

5) ADD status: CAO will finish version 9.0 Friday (25/6 2004)

6) ISDC: CBJ wil visit ISDC in late July

AOB: SB has made a pulsar search when Crab is outside FOV. No signal
     found. This result is to be quantified.
     
     In the upcoming Crab calibration we would very much like to get
     a dense 'dithering' grid to establish the collimator tilt with
     a step size of perhaps 2 or 5 arcmin.

/NJW
----------
Niels J. Westergaard
Danish Space Research Institute
Juliane Maries Vej 30, DK 2100 Copenhagen O
Phone: +45 35 32 57 05; FAX:  +45 35 36 24 75