Bochum 2009 – wissenschaftliches Programm
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HK: Fachverband Hadronen und Kerne
HK 67: Poster Session
HK 67.106: Poster
Donnerstag, 19. März 2009, 14:00–16:00, Audi-Max
A Start Detector for the new CBELSA/TAPS TPC — •Tim Odenthal — Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Nußallee 14-16, 53115 Bonn
As one of the upgrades to the Crystal-Barrel-Experiment at the electron accelerator ELSA (Bonn), a new inner tracking detector will be built. The present setup with its two electromagnetic calorimeters consisting of 1320 CsI(Tl) and 216 BaF2 crystals respectively, is very well suited to measure photons. The inner scintillating fibre detector presently used for charged particle identification will be replaced by a Time Projection Chamber. To provide a time reference for the TPC, a start detector is under development. Due to the very limited space of only a few mm between the TPC and the polarised target, different design concepts for the start detector and its readout are under consideration. The poster will show the latest test results obtained. Plastic scintillating bars and fibres being read out by photomultipliers and SiPM are presently tested. This work is supported by the DFG (SFB/TR16).