Simulation Study on Feasibility of RPC Operation in Low Gain Mode

Abstract

A resistive plate chamber can perform efficiently up to a maximum particle flux of ∼ 1 kHz/cm2. One of the ways to increase its rate capability is to operate it in low gain or low charge production mode. We have simulated the produced charge in a standard RPC due to passage of muons and explored the conditions to operate it in low charge production mode. The effect of applied field and SF 6 content of the gas mixture on the produced charge has been studied. The conditions to produce charges as low as 100 fC have been established and the efficiency of the detector at this condition for different electronic thresholds has been calculated. Some preliminary experiments were performed to achieve the same goal.