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arXiv physics/0602143physics.ins-det
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电阻板室中流光猝灭的新概念

A new concept for streamer quenching in resistive plate chambers

A. Calcaterra, R. de Sangro, G. Mannocchi, P. Patteri, P. Picchi, M. Piccolo, N. Redaelli, T. Tabarelli de Fatis, G. C. Trinchero

摘要:

本文提出了一种电阻板室中流光猝灭的新概念。在我们的方法中,倍增过程通过插入在两个电阻电极之间的机械结构的适当设计来淬灭。我们表明,实现稳定的性能与基于氩气和一小部分异丁烷的二元气体混合物。被认为是RPC探测器电极内表面降解的原因的氟碳化合物因此从气体混合物中完全消除。这种设计{还导致}简化了组装程序。初步结果与几个原型的“机械淬火RPC”和一些未来的发展前景进行了讨论。

英文摘要:

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.

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