Charge collection and equalization for position-sensitive silicon strip detector

A new and complete theoretical formulation was implemented for resistive silicon strip detectors, taking into account the effects of detector time constant, finite impedance of the preamplifier and the charge equalization effect. The theoretical calculation agrees very well with the model simulation and experimental tests. Although the “ballistic deficit” effect is small for a strip detector, it is demonstrated that the charge equalization effect should be treated carefully. The present work provides a quantitative base to optimize the design of the resistive strip detector, the preamplifier and the amplifier in a consistent way.