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HK: Fachverband Physik der Hadronen und Kerne
HK 47: Instrumentation und Anwendungen
HK 47.3: Talk
Thursday, March 15, 2007, 14:45–15:00, F
Properties of Multigap RPC detectors tested with continuous electron beams at ELBE* — •Frank Dohrmann, Roland Kotte, Lothar Naumann, Daniel Stach, Arina Sytcheva, and Jörn Wüstenfeld for the CBM collaboration — Institut f. Strahlenphysik, FZ Dresden-Rossendorf, PF 510119, 01314 Dresden
Multigap Resistive Plate Chambers (MRPC) provide the possibility for assembling high-granularity, large-area TOF sytems designed for modern nuclear and particle physics experiments. Currently, experiments like ALICE, STAR, FOPI, HADES prepare MRCP based TOF systems with time resolutions of less than 100 ps. The planned CBM experiment at the future FAIR facility at GSI/Darmstadt considers using an MRPC system provided sufficient time resolution and rate stability can be achieved. These properties of MRCP have been successfully demonstrated in prototype tests performed at the FZD electron linac ELBE, using continuous e− beams of 20-40 MeV [1]. Typical time resolutions of 70 ps were achieved. The rate capabilities of MRCP using special low-resistive silicate glas were tested and stable efficiencies up to rates of 20 kHz/cm2 were observed.
[1] R. Kotte, F. Dohrmann, J. Hutsch, L. Naumann, D. Stach NIM A 564 (2006) 155
*funded by EU FP6 I3HP, contract RII3-CT-2004-506078, INTAS grant 03-54-3891