https://doi.org/10.1140/epja/i2008-10749-4
Special Article - Tools for Experiment and Theory
Matrix formalism and singular-value decomposition for the location of gamma interactions in segmented HPGe detectors
1
CSNSM CNRS/IN2P3 and Université Paris Sud 11, 15 rue G. Clémenceau, 91405, Orsay, France
2
IPNO CNRS/IN2P3 and Université Paris Sud 11, 15 rue G. Clémenceau, 91406, Orsay, France
Received:
31
October
2008
Revised:
24
January
2009
Accepted:
10
March
2009
Published online:
9
April
2009
Modern coaxial and planar HPGe detectors allow a precise determination of the energies and trajectories of the impinging gamma-rays. This entails the location of the gamma interactions inside the crystal from the shape of the delivered signals. This paper reviews the state of the art of the analysis of the HPGe response function and proposes methods that lead to optimum signal decomposition. The generic matrix method allows fast location of the interactions even when the induced signals strongly overlap.
PACS: 29.40.Gx Tracking and position-sensitive detectors – / 02.30.Zz Inverse problems – / 29.30.Kv X- and gamma-ray spectroscopy – / 07.50.Qx Signal processing electronics –
© SIF, Springer-Verlag Berlin Heidelberg, 2009
