Subject: JEM-X Monday Meeting 2006-06-15

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

JEM-X status (SB): Right at start-up (after perigeum exit)
the hardware trigger rate is very high.
An analysis of time lapse between belt exit and switch on
and between switch off and belt entry. The belt nearbyness
is defined by the IREM count rate (1000 cts/8min).
Presumably JEM-X is switched on while still in somewhat
high radiation level.
(JC): The blank field shadowgram when observed in June 2006
looks different from what it previously looked like.
(Seen when checking for anode status).
(CAO): Large glitch in revolution 443 (June 1, 2006).

Ideas for next Crab calibration (all): Should we change
rejection criteria back to what they were for period before
revol. 170 in order to determine the electronic efficiency
by Crab measurements with decreased HV. In principle it can
be done by already available data but not in a broad energy
range. This applies to JMX2. Can MOC bring us back to the
situation before revol. 170? Should we propose a similar
exercise for JMX1 for a small number of observations + the
Crab calibrations (revol. 39-45,102)?
At least we should propose a nice long on-axis observation
where the HV exercises can be done and the detector
properties can be verified.

j_src_properties (NL, NJW): The NL version can now run when
the element pointer is shifted from the struct imod_rmd to
a separate argument.

New DNSC webpage (NL): We must produce a short text and an
image (picture) for each project. A list of proposed authors
has been distributed. New meeting on this Thursday next week.

/NJW