Tohban Report - 1 - 7 December 2003

Brian Dennis

Operations

Some shutter movement because detector #5 rate increased again. HV was
reduced on Friday to eliminate this problem.

Cooler operating at ~63 watts. Temperature on cold plate climbing above 81K
as eclipse periods lengthen. Discussion continues to decide what action to
take to accommodate the reduced efficiency of the cooler. Rob Boyle not
available for consultation because of emergency with cryocooler on XRS.
No data gaps through 22:53 UT on 6 Dec. except for missing data from 08:33 -
10:33 UT.

Solar Activity

Several M- and C-class flares from NOAA active region 0510 as it moved over
the southwest limb.

How many GOES flares occurred?
Flares above C, M, X class were           28           4           0
And how many had good RHESSI coverage?
Flares above C, M, X class were           20           3           0