Speaker
Description
It is important to be able to correctly estimate the electric field, current, and potential distribution in RPC in order to envisage the working of the device. This is useful in optimizing its design and operation for specific applications. We have performed a calculation of the electric field current and potential distribution of RPC from the first principle using the finite element method on COMSOL Multiphysics platform and compared to results by Ammosov et al [1], which is comparable to our simulated results. It has been then used to study the effect of the electrode and spacer materials on field configuration and dark current. The effect of uniform and non-uniform surface resistivity of the conductive coating on the electric field distribution has also been studied. The time-dependent and transient responses of potential distribution for these two cases have been simulated and used for optimizing the surface resistivity. A few experimental measurements have been carried out to corroborate the simulation results.
References
[1] V. Ammosov, V. Korablev, V. Zaets, Electric field and currents in resistive plate chambers, Nucl. Instr. and Meth. A 401 (1997) 217-228.
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