Detector 2 anneal 2012

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Detector 2 history/issues goes here.
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* Detector 2 has been unsegmented since the 2012 anneal.
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* Detector 2 is located in a position where it can receive light leak through a valve at the back of the cryostat.  This problem occurs when the back of the spacecraft is pointed towards the sunlit earth, so it comes and goes with the orbital precession.  Light leak only affects the rear sections of the detector, but since Detector 2 is unsegmented, the excess counts are seen in the front segment readout.  Symptoms of this problem are enhanced reset rates and fast LLD rates, and the problem does degrade livetime.  Raising the LLD level can ease the livetime problem, but this will have a negative effect on lower-energy spectroscopy.

Revision as of 00:07, 23 June 2012

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