Effect of water vapor on the performance of glass RPCs in avalanche mode operation

Abstract

We studied the effect of water vapor on the performance of glass Resistive Plate Chambers (RPCs) in the avalanche mode operation. Controlled and calibrated amount of water vapor was added to the RPC gas mixture that has C 2 H 2 F 4 as the major component. The deterioration in the performance of RPC was observed while operating with wet gas and recovered after switching to standard gas.

Digital Twins in the Practice of High-Energy Physics Experiments: A Gas System for the Multipurpose Detector

“…In particular, the water vapors contamination may significantly affect detector performance by reducing efficiency, signal rates, and rising currents [47]. Therefore, the gas leaving the detector chambers is continuously analyzed and purified.…”