Testing a triple-GEM detector with cosmic rays using a self-triggered Front End Electronics (FEE)

A high rate, high granularity gas detector system is being developed for its use as Muon Tracker in the Compressed Baryonic Matter (CBM) experiment at the upcoming FAIR facility at GSI, Darmstadt. We, at VECC are involved in developing Gas Electron Multiplier (GEM)-based muon detectors for the first two stations of Muon Chambers(MUCH) from the target. This large acceptance detector is required to have high position resolution and should be able to cope with the high rate (10 MHz/cm2) of particle flux in the CBM experiment. High detection efficiency for the Minimum Ionizing Particles (MIP) is one of the necessary criteria for the MUCH detectors. One of the unique features of the CBM detectors is the use of self-triggered readout electronics to avoid trigger processing time which otherwise will be the reason to miss events at high interaction rates