Design and performance of the readout electronics chain of the Delphi forward ring imaging Cherenkov detector

The front-end readout electronics chain of the forward ring imaging Cherenkov (FRICH) detector used at the Delphi experiment of the Large Electron Positron (LEP) collider is presented. The system incorporates a wideband low-noise preamplifier, mounted in the proximity of the multiwire proportional chamber, an amplifying-discriminating-multiplexing FASTBUS unit for further signal amplification, discrimination, and channel reduction, and a LEP time digitizer FASTBUS unit for time digitization. The detector and its electronics are discussed, with particular emphasis on the novel characteristics and capabilities of the system.<
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