Signal formation by moving charges

Abstract

Normally modern detectors are read out electronically. The signals that are induced on the detector electrodes are generated by the movement of charges relative to the electrodes. The general principle for the calculation of the signals is introduced on the basis of the Shockley-Ramo theorem applying the concept of weighting fields to an arbitrary number of electrodes in field volumes with and without space charge. Examples of the time development of signals are calculated for electrode arrangements with plate and cylinder geometry and for electrodes with strip or pixel segmentation.