Application of microchannel plates at high count rates

The output parameters of microchannel chevron amplifiers built around microchannel plates with current variable along the channel length, i.e., variable resistivity, have been studied. The volume charge in such plates is not stored at channel outputs and this improves the output characteristics of the multipliers. The detector current gain is stable for a dynamic range of input flow rates of several orders of magnitude and the detector output parameters do not fail at count rates up to several megahertz. The detector's parameters are more stable in time at very high current rates.