Subject: JEM-X monday meeting 2004-05-10

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

Status for JEM-X:
  JMX1 hot spot in 019100130010 at edge of active area
       No new dead anodes
  JMX2 will be turned on in rev. 208 and 209 (26/6 - 2/7 2004)
       (email from Astrid Orr) Mkn 590 + some GPS
       
  Both SB showed several spectra of the calibration sources with
       normalization to the 22 keV peak. The position of the 8 keV
       peak varies somewhat from cal. source to cal. source
       but is stable in time (from rev 30 thru 40 to rev 170)
       hence no gas ageing/contamination is detected.
       
  FM1(spare model inlab)
       The further experiments with this detector were discussed.
       
Follow up on SDAST meeting:

  The work on the PIF (Pixel Illumination Function) continues with
  high priority.
  Else the OSA4 deliveries are very urgent.
  
PIF and the collimator:
  
  NL has found that a larger thickness (0.7 mm in stead of 0.45) of the
  collimator walls together with a tilt may explain the strange
  single-sided 'oversensitivity'. This seems to be somewhat energy
  dependent. Basically the precise shape of the collimator is unknown.
  
Refereeing activities (Munich)

  We must finish them this week.

ISDC activities.

  The presence at ISDC should be in connection with GCDE/GPS activities
  We still aim to have someone there on a monthly basis.

AOB: JC has found the new source (message from Grebenev) in two of the
  four science windows. The position will be reported back to Grebenev
  for inclusion in the ATEL (if not too late).

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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