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Katholieke Universiteit Leuven, Faculteit Wetenschappen, Departement Natuurkunde en Sterrenkunde, Celestijnenlaan 200D, 3001 Leuven
The front end electronic (PMF) of the future ATLAS luminometer is described here. It is composed of a MAPMT and a compact stack of three PCBs which deliver the high voltage, route and readout the output signals. The third board contains an FPGA and MAROC, a 64-channel ASIC which can correct the non uniformity of the MAPMT channels gain thanks to a variable gain preamplifier. Its main role is to shape and discriminate the input signals at 1/3 photo-electron and produce 64 trigger outputs. Laboratory tests performed on prototype and pre-series PMFs have showed performances in good agreement with the requirements and have fulfilled the approval criteria for the final production of all elements.
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