On the feasibility of front-end electronics for microstrip vertex detectors under the operating conditions of large hadron colliders

In the workshops on future hadron colliders the question is frequently raised as to whether the presently employed vertex detectors could cope or not with the very short time intervals between bunch crossings at which the large hadron colliders will operate. Silicon microstrip detectors seem to be suitable for the purpose as they have charge collection times in the ns region. The question of the feasibility of a front-end electronics, able to provide an adequately large signal-to-noise ratio under the operating conditions of future hadron colliders is, however, still open. This paper aims at showing that a front-end employing GaAs MESFETs or silicon microwave bipolar transistors as low noise devices may allow a reliable signal detection with silicon microstrips down to a few tens of nanoseconds interval between bunch crossings. (orig.)