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R&D for a highly granular silicon tungsten electromagnetic calorimeter

Abstract : This article reports on first experience with the technological prototype of a highly- granular silicon-tungsten electromagnetic calorimeter as envisaged for the detectors at a future lepton collider. In the focus of the analysis is the performance of a highly integrated Application Specific Integrated Circuit designed to meet the requirements in terms of dynamic range, compactness and power consumption. The beam test results show that the circuit will allow a future detector with a signal over noise ratio of at least 10:1. To minimise the power dissipation the ASIC will be operated in a power pulsed mode. So far no conceptual problem was revealed but the studies show the way for further work. The prototype is read out by a DAQ system conceived to meet the needs of a trigger less system with a huge number of readout cells.
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R. Poeschl. R&D for a highly granular silicon tungsten electromagnetic calorimeter. 16th International Conference on Calorimetry in High Energy Physics (CALOR 2014), Apr 2014, Giessen, Germany. pp.012032, ⟨10.1088/1742-6596/587/1/012032⟩. ⟨in2p3-00977102⟩

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