this is a note file for science run interruption occured on 20061213


12/13/2006 Radiation Telecom Summary
------------------------------------
As anticipated SCS-107 ran at ~2006:347:22:44 UT due to E1300. The E1300 level 
was ~30 (vs a RADMON threshold of 20). P4GM was ~2/3 threshold and P41GM was 
~1/3 threshold. SCS-107 ran nominally but ACIS BEP experience a re-boot due to  
missing a watchdog timer. The reboot caused the ACIS Flight software to revert 
to an earlier version (11). ACIS will diagnose the problem and present a plan 
for moving forward with ACIS operations. ACIS Flight S/W patches must be up 
uplinked to restore full, expected capability; however, it may be that the 
current planned observations do not use the missing capability. ACIS OPS will 
investigate the near-term need for the patches.

There is a replan load for an attempt to resume science at 2006:348:23:00:00.000UT, 
subject to the radiation environment and ACIS readiness. Review tomorrow at 
11am EST

Comm at 2006:348:21:25 - 23:15 UT for possible uploading of ACIS patches and 
science loads. Acitivity contingent on ACIS diagnostics and radiation 
environment.




12/13/2006 SOT Report
----------------------
Region 10930 produced a major X3.4/4B proton flare peaking at 02:40 UTC on
December 13.  This is a hard proton event and a strong response was seen in
GOES and ACE protons shortly thereafter.  Currently the GOES surrogate for
P41GM is about a factor of 2 above the RADMON limit and declining steadily.
It is likely that E1300 is above the trip limit and will remain so until the
RADMON enable today at 347:22:33:53.  No LASCO imagery covering the time of
the flare is available, but it is highly likely that a CME is en route.

By good fortune the mission schedule puts Chandra in a good position to
respond to this event.  If SCS107 runs 10 minutes after RADMON enable then
Chandra will be left at a cool attitude, with HETG inserted and with no
violations for at least a couple of days.  Comm is now scheduled to cover the
time of RADMON enable to allow realtime monitoring of the expected SCS107
run.