Very Front-End Electronics for LHCb Preshower

Abstract

This note describes a fully synchronous solution for the very front-end eletronics associated to the LHCb preshower detector. After reminding first the main characteristics of the expected signal, the general design and the main features of this board are given. Integration of the analog signal is done on an ASIC, with 10-bit dynamic range, placed as close as possi- ble to the read-out system. First results of a prototype are shown. Only the analog part is presented here, the digital part being on another board placed above the ECAL and described in a companion note.