Author/Authors :
Pisani، نويسنده , , R.P and Hemmick، نويسنده , , T.K and Chung، نويسنده , , H. and Johnson، نويسنده , , S.C and Piazza، نويسنده , , T. and Vongpaseuth، نويسنده , , T. and Akopyan، نويسنده , , M.، نويسنده ,
Abstract :
We constructed and tested a threshold Cherenkov detector (inspired by the conceptual design of Giomataris and Charpak (Nucl. Instr. and Meth. A 310 (1991) 589) consisting of a gas radiator followed by a photosensitive wire chamber using a solid CsI photocathode. The detector was operated with C2F6 radiator gas and a 95%He+5%CH4 mixture for the avalanche gas. At 95% electron efficiency, the pion efficiency was 1333, 1150, and 1100 for each of the lengths listed above.
