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HK: Fachverband Hadronen und Kerne

HK 67: Poster Session

HK 67.85: Poster

Donnerstag, 19. März 2009, 14:00–16:00, Audi-Max

Development for PRESPEC : New front end electronic for Multi Sampling Ionization Chambers of the GSI-fragment separator — •Stephane Pietri, Juergen Gerl, Nik Kurz, Chiara Nociforo, Henning Schaffner, and Haik Simon — GSI, Planckstrasse 1, 64291 Darmstadt, Germany

To study detailed structure effects during in-beam gamma spectroscopy experiments at the GSI fragment separator high particles rates are needed at the final focal plane. The use of new position detector (TPC [1]) having higher rate capability than the previous Multi-Wire Proportional Counter put the ionization chambers (MUSICs) used for the delta-E measurement as the limiting factor. The current electronics used for those detector does not allow to sustain rates of up to 100 kHz that the coming experimental program will request. Indeed at those rates the analog electronic is not able to disentangle pile-up events and thus give a wrong Z identification for the incoming nucleus. The ongoing work on new digital electronic and on signal characterization to allow higher rates capability of those detectors will be presented.

[1] : V. Hlinka et al. NIMA 419 (1998) 503