An Integrated Circuit for Signal Processing of the AMS RICH Photmultipliers Tubes

Details An Integrated Circuit for Signal Processing of the AMS RICH Photmultipliers Tubes An Integrated Circuit for Signal Processing of the AMS RICH Photmultipliers Tubes

1998-12-09

arxiv.org/abs/physics/9812015v1

Phys.Rev.STAccel.Beams1:030101,1998

Physics

Instrumentation and Detectors

IEEE symp. on Nucl. Sci. and Med. Imaging, Toronto

Scientific paper

An analog integrated circuit has been designed, in a BiCMOS 0.8 micron technology, for the feasability study of the signal processing of the AMS RICH photomultiplier tubes. This low power, three channel gated integrator includes its own gate and no external analog delay is requiered. It processes PMT pulses over a dynamic range of more than 100. A logic output that indicates whether the analog charge has to be considered is provided. This gated integrator is used with a compact DSP based acquisition system in a 132 channels RICH prototype. The charge calibration of each channel is carried out using a LED. The pedestal measurement is performed on activation of a dedicated input. The noise contribution study of the input RC network and amplifiers is presented.

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