Dresden 2013 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Instrumentation

HK 46.2: Vortrag

Dienstag, 5. März 2013, 17:00–17:15, WIL-A221

Ceramic Resistive Plate Chambers for High Rate Environments — •Alejandro Laso Garcia, Marcus Kaspar, Burkhard Kämpfer, Roland Kotte, Lothar Naumann, Daniel Stach, Christian Wendisch, and Jörn Wüstenfeld — Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Sachsen

The future Compressed Baryonic Matter Experiment to be built at FAIR is foreseen to use Resistive Plate Chambers as Time of Flight detectors. However, for the most central part of the ToF Wall high particle fluxes are expected, the simulations predict fluxes in the order of 2x10⁴ particles/cm² s and even higher the closer the wall approaches the beampipe. This high fluxes show the need to develop new materials.

At Helmholtz-Zentrum Dresden Rossendorf, new semiconductor ceramic composites have been developed, several prototypes of RPCs with ceramic electrodes up to 20x20 cm² have been developed and tested.

In this talk, the performance of this detectors in electron (ELBE) and proton (COSY) beams will be presented, as well as, the performance of this detectors under irradiation in Ni+Pb collisions at 1.9 AGeV (SIS18, GSI). This performance can be quantified as an efficiency close to 100% and a time resolution better than 100 ps.