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HK: Fachverband Physik der Hadronen und Kerne
HK 4: Instrumentation
HK 4.5: Talk
Monday, March 19, 2012, 15:15–15:30, P 2
Ceramic Resitive Plate Chambers for High Rate Environments — •Laso Garcia Alejandro, Kämpfer Burkhard, Kaspar Markus, Kotte Roland, Peschke Richard, Stach Daniel, Wendisch Christian, and Wüstenfeld Jörn — Helmholtz Zentrum Dresden-Rossendorf
Multi-gap resistive plate chambers will be used to build the Time of Flight wall of the Compressed Baryonic Matter experiment (CBM) at FAIR with a time resolution better than 80 ps. The high fluxes expected at the innermost part of the detector, 20 x 103 cm−2 s−1 have made necessary the development of new materials capable of withstanding such fluxes.
At Helmholtz Zentrum Dresden-Rossendorf, several RPC prototypes of 10x10 cm2 and 20x20 cm2 have been built with ceramic plates with bulk resistivities in the range of 109-1010 Ohm cm [1]. They have been tested at the superconducting electron accelerator facility ELBE with 30 MeV electrons and at COSY, Jülich, with 2.7 Gev/c protons.
We will present characteristics of the ceramic electrodes and the latest results concerning the performance of these prototypes in electron and proton beams up to fluxes of 106 cm−2 s−1.
[1] L. Naumann et al., NIMA 628(2011) 138-141