Author/Authors :
Chesi، نويسنده , , E. and Martinengo، نويسنده , , P. and Weilhammer، نويسنده , , Steven P. and Roe، نويسنده , , S. and Jobez، نويسنده , , J.P. and Seguinot، نويسنده , , J. and Ypsilantis، نويسنده , , T. and Dulinski، نويسنده , , W. and Zichichi، نويسنده , , A.، نويسنده ,
Abstract :
We report a detailed experimental investigation of a proximity focused HPD with 256 pads of 4 × 4 mm2 for applications to RICH detectors. A signal to noise ratio of 16 is obtained for single photoelectrons with a low noise (ENC ≤ 200 e) front-end electronics and 15.7 kV acceleration voltage. A single photoelectron detection efficiency of 95% is achieved with about 1% bias from electron back scattering.
