Study of neutron irradiated silicon counters with a fast amplifier

Abstract Silicon detectors have been irradiated with fluences of up to 2.7 × 10 13 neutrons/cm 2 , and have been subsequently studied using low-noise preamplifiers with a peaking time of about 15 ns. The detector response to minimum ionizing particles was found to be close to that of non-irradiated detectors. The short integration time of the preamplifier makes the shot noise due to the detector dark current tolerable up to at least 15 μA/channel.