Test of pulse shape analysis using single Compton scattering events

Abt, I.; Caldwell, A.; Kröninger, K.; Liu, J.; Liu, X.; Majorovits, B.
April 2008
European Physical Journal C -- Particles & Fields;Apr2008, Vol. 54 Issue 3, p425
Academic Journal
Procedures developed to separate single- and multiple-site events in germanium detector are tested with specially selected event samples provided by an 18-fold segmented prototype germanium detector for phase II of the germanium detector array, GERDA. The single Compton scattering, i.e. single-site, events are tagged by coincidently detecting the scattered photon with a second detector positioned at a defined angle. A neural network is trained to separate such events from events which come from multi-site dominated samples. Identification efficiencies of ≈80% are achieved for both single- and multi-site events.


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