Characteristics of point focusing image intensifiers and hybrid PMs as elements of multichannel particle detectors

Abstract The use and parameters of two new devices for multichannel coordinate Cherenkov and scintillation detectors are discussed. The first one is an input element of a multichannel system based on IIs and CCD to realize photoreceivers of 1 m 2 working area. The input element (named “elkon”) is a three electrode II with low magification, focusing an image in a 1 mm diameter spot. The elkon-II-CCD system provides a one-photon detection efficiency near 10%. The total number of the independent detection channels is about 10 3 and 5 × 10 3 with II photocathode diameters of 40 and 80 mm, respectively. Another way to realize the photodetectors with large sensitive area is to use simple hydrid PMTs, representing the elkon with the built-in MDS-photoelement, operating in avalanche mode.