Subject: JEM-X Monday Meeting 2008-03-31
Date: Mon, 31 Mar 2008 14:47:12 +0200 (MEST)

Participants: SB, JC, CBJ, NL, NJW.

JEM-X status (SB): As usual.

Crab calibration (CBJ, SB, JC): Above 6 keV the spectrum has the same shape as
the reference spectrum but 20% lower. At low energy the present spectrum is
higher than the reference spectrum. A correction for the gain effects has been
included. It is unclear why the spectrum is lower, but it is the same
conclusion as in the j_ima_iros analysis, at least qualitatively.
We can check the HK channels that report on the event rejection.
JMX2 has used about 8 hours for the gain to stabilize (after long dormant period).
JMX1 stabilized after 3-4 hours.
Anodestatus: JMX1 has not changed. For JMX2 a deeper analysis is required since the
observation pattern is different from the previous Crab calibration observation,
though there is no indication of lost anodes.
Timing: The pulse shape of the Crab looks familiar so timing precision is still fine.

SDAST meeting #39 (NJW): Will be postponed but we will have an internal meeting
either 2008-04-16 or 2008-04-17 in the SDAST style.

/NJW