An experimental study to understand the physics behind charging-up of Gas Electron Multiplier (GEM)

Charging-up is a phenomenon observed while working with gaseous ionization detector having dielectric. It comprised of two processes: the polarization dielectric due to exposure high electric field and collection charges on surface. Both these charging-up processes affect gain as they change local configuration around Here, we have studied effects using experimental techniques for single GEM detector. has been that increased following curve similar capacitor. However, radiation reduced depending rate. rate modified by a) collimators, b) strong weak sources. As increased, accelerated. Its are important experiments where beam current changes significantly time in TPC application which requires be stable over time.