Figure 12
Measured counting rates in the fast (unit impulse pulse shaping) and slow (trapezoidal pulse shaping) channel (without filter). (a) The linearity of Rfast versus current is also deteriorated by the increasing number of pile-up pulses in the fast channel. (b) A large amount of pile-up pulses are abandoned in the slow channel and the measured counting rate decreases when the current goes beyond 27.5 µA. |