Abstract

We present latest results of a micro-hole and strip plate (MHSP) electron multiplier operating in pure xenon at atmospheric pressure. We report on avalanche gain of ∼2×10 4, stable within ∼3% after an accumulated charge of 4 μC/mm 2, when irradiated with 0.5 kHz/mm 2 5.9 keV photons. No photon-induced secondary effects or discharges have been observed at this gain. An energy resolution of 14% was obtained with 5.9 keV X-rays.

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