Physics – Instrumentation and Detectors
Scientific paper
2006-02-21
Nucl.Instrum.Meth.A565:444-449,2006; Erratum-ibid.A564:615,2006
Physics
Instrumentation and Detectors
11 pages, 6 figures, accepted by Nucl. Instr. and Meth. A
Scientific paper
10.1016/j.nima.2006.02.162 10.10
In this paper we propose a new concept for streamer quenching in Resistive Plate Chambers (RPCs). In our approach, the multiplication process is quenched by the appropriate design of a mechanical structure inserted between the two resistive electrodes. We show that stable performance is achieved with binary gas mixtures based on argon and a small fraction of isobutane. Fluorocarbons, deemed responsible for the degradation of the electrode inner surface of RPC detectors, are thus fully eliminated from the gas mixture. This design {also resulted} in a simplified assembly procedure. Preliminary results obtained with a few prototypes of ``Mechanically Quenched RPCs'' and some prospects for future developments are discussed.
Calcaterra A.
de Fatis Tommaso Tabarelli
de Sangro R.
Mannocchi Giampaolo
Patteri P.
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