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HK: Physik der Hadronen und Kerne

HK 27: Instrumentation und Anwendungen

HK 27.1: Vortrag

Dienstag, 21. März 2006, 17:00–17:15, H

Pulse shape analysis for germanium detectors operated under magnetic fields — •A. Sanchez Lorente¹, P. Achenbach¹, M. Agnello², T. Bressani², D. Calvo², A. Feliciello², F. Ferro², J. Gerl³, P. Gianotti⁴, O.N. Hartman⁴, F. Iazzi², M. Kavatsyuk¹, I. Kojouhavorv³, J. Pochodzalla¹, G. Raciti⁵, N. Saito³, T.R. Saito³, C. Schwarz³, H. Schaffner³, and C. Sfienti³ — ¹U Mainz — ²Politecnico+INFN Torino — ³GSI — ⁴INFN Frascati — ⁵U+INFN Catania

Future experiments on hypernuclei γ-spectroscopy at FINUDA@DAFNE and PANDA@FAIR require the operation of germanium detectors in high magnetic fields (B ≈1 T) and under high particle and γ fluxes.
The performance of germanium detectors in such an environment has not been well investigated.
To verify that germanium detectors can be safely and efficiently operated in a high magnetic field two different kind of detectors have been investigated: the EUROBALL cluster detector and the VEGA detector.
Result on the energy resolution from a pulse shape analysis using a moving window deconvolution algorithm will be presented.
The energy resolution as a function of the magnetic field strength will be discussed and compared to the resolution obtained without pulse shape information.

This research is part of the EU integrated infrastructure initiative Hadronphysics project under contract number RII3-CT-2004-506078 and 06MZ176.