Detector Physics and Performance Simulations of the MWPCs

This note discusses some basic detector physics and performance parameters of the Multi Wire Proportional Chambers (MWPCs) for LHCb that were developed at PNPI [1]. Detector physics topics like chamber geometries, potentials and elds, sensitivity to imperfections, electrostatic stability, wire diameter, gas properties and signal formation are discussed. Electronics issues concerning noise, peaking time and deadtime are described as well.