Abstract
We report on the design and testing of novel mixed analog and digital front end ASICs custom made for the single photon detectors considered for the BTeV RICH system. The key features are reviewed, as well as results achieved using electronics bench tests and beam studies.
Highlights
Charged particle identification is a crucial component of any modern experiment studying charm and beauty decays
The BTeV Ring Imaging Cherenkov (RICH) detector has the important functions of separating π, K, and p, and discriminating electrons and muons from pions
The two photon detector options that we considered were hybrid photodiodes (HPDs), fabricated at Delft Electronic Products B.V. (DEP), the Netherlands 2, and multi-anode photomultiplier tubes (MaPMTs), fabricated by Hamamatsu 3, Japan
Summary
Charged particle identification is a crucial component of any modern experiment studying charm and beauty decays. The BTeV RICH detector has the important functions of separating π, K, and p, and discriminating electrons and muons from pions. The RICH detector has generally very low occupancy, some areas experience high rates and we required these devices to be able to sustain the maximum rate, expected to be on the order of 3 MHz. Two different custom made ASICs were designed and produced for us by IDEAS, Norway 4 The most extensive tests were performed on the VA MaPMT circuit, packaged in the hybrid devices used in the BTeV RICH beam test studies described in another contribution to this conference [2].
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