Abstract

We present the result of a systematic investigation of the quantum efficiency of reflective CsI photocathodes in the spectral range 140–220 nm. Powder and crystal forms of CsI were used for evaporation of bulk and porous photocathodes. The measurements were made without gaseous amplification in vacuum and in methane. The results of radiation resistance measurements at doses reaching 4500 Gy are also reported.

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