Bochum 1998 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 56: Postersitzung

HK 56.78: Poster

Mittwoch, 18. März 1998, 17:00–19:00, Foyer

Comparison of digital and analogue radius determination in HPGe detectors — •C. Gund, L. Palafox, T. Härtlein, and D. Schwalm — Max–Planck–Institut für Kernphysik, Heidelberg

In the MINIBALL setup large encapsulated high purity germanium detectors for γ-ray detection will be operated at small target distances. An enhanced granularity is therefore required to improve the Doppler correction. In order to obtain the highest granularity possible both angular segmentation and radial resolution by pulse shape analysis will be employed. One of the favoured algorithms for pulse shape analysis, the steepest slope algorithm [1], can be implemented both digitally and in an analogue circuit. Hence the two possible ways of implementing this algorithm are compared focussing on radial resolution, speed and price per channel.

[1] C. Gund, L. Palafox, T. Härtlein, F. Köck, D. Schwalm, D. Habs and J. Eberth, Increasing the granularity of HPGe γ-ray detectors for MINIBALL, to be published