A new concept for streamer quenching in resistive plate chambers
arXiv:physics/0602143 · doi:10.1016/j.nima.2006.02.162 10.1016/j.nima.2006.05.154
Abstract
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.
11 pages, 6 figures, accepted by Nucl. Instr. and Meth. A