Resistive Plate Chambers: electron transport and modeling

27th Summer School and International Symposium on the Physics of Ionized Gases

Bonjakovi, D.^1 ; Petrovi, Z Lj^1 ; Dujko, S.^1

Institute of Physics, University of Belgrade, Pregrevica 118, Belgrade

11070, Serbia^1

关键词: Comparison and analysis;    Electron attachment;    Electron transport;    High energy physics experiments;    Monte Carlo techniques;    Negative differential conductivities;    Resistive plate chambers;    Spatially resolved;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/565/1/012008/pdf
DOI  :  10.1088/1742-6596/565/1/012008

来源: IOP

【 摘 要 】

We study the electron transport in gas mixtures used by Resistive Plate Chambers (RPCs) in high energy physics experiments at CERN. Calculations are performed using a multi term theory for solving the Boltzmann equation. We identify the effects induced by non-conservative nature of electron attachment, including attachment heating of electrons and negative differential conductivity (NDC). NDC was observed only in the bulk component of drift velocity. Using our Monte Carlo technique, we calculate the spatially resolved transport properties in order to investigate the origin of these effects. We also present our microscopic approach to modeling of RPCs which is based on Monte Carlo method. Calculated results for a timing RPC show good agreement with an analytical model and experimental data. Different cross section sets for electron scattering in C2H2F4are used for comparison and analysis.