PT Journal
AU Goel, N
   Domingo-Pardo, C
   Habermann, T
   Ameil, F
   Engert, T
   Gerl, J
   Kojouharov, I
   Maruhn, J
   Pietralla, N
   Schaffner, H
TI Characterisation of a symmetric AGATA detector using the gamma-ray imaging scanning technique
SO Nuclear Instruments & Methods in Physics Research A
JI Nucl. Instrum. Methods Phys. Res. A
PY 2013
BP 10
EP 21
VL 700
DI 10.1016/j.nima.2012.10.028
LA English
DE AGATA; Pulse shape comparison (PSC); Pulse shape analysis (PSA)
AB The imaging scanning technique for the characterisation of large volume, highly segmented, HPGe detectors is demonstrated by comparing the measured spatial response of a symmetric AGATA crystal versus the theoretical calculations obtained with the Multi-Geometry Simulation (MGS) code. The signal rise-times measured as a function of the gamma-ray interaction positions, in both coaxial and planar regions of the detection volume, are presented and confronted with the expected behaviour obtained via MGS. The transition in charge carrier transport behaviour as a function of the depth is studied for the region of the complex electric field. In general, a fairly good agreement between theory and experiment is obtained. Only systematic deviations between simulation and measurement are observed in the critical front part of the AGATA detector. They may be ascribed to a non-linear impurity concentration profile of the germanium crystal.
ER