Abstract
The pulse simulator described here can be used to simulate the output pulses of a large HPGe detector preamplifier combination. A number of such simulators can be used to obtain pulses having a fixed time origin but with randomly varying risetime. These simulators can replace large HPGe detectors at the time of setting up of electronic modules in a multidetector fast coincidence experiment using an accelerator beam. Thus the unnecessary exposure of detectors to radiation during the preparatory phase can be avoided and the entire accelerator beam time can be used for acquisition of experimental data. The minimum and maximum values of risetime can be set to have a spread within a band of 60 to 600 ns and the pulse amplitude is adjustable from 0 to −2 V. The FW (0.01) M of the pulse height distribution is 1 mV for a pulse height of 2 V, which is much less than that of a photopeak obtained with large HPGe detectors.
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