Author/Authors :
Adachi، نويسنده , , I. and Dolenec، نويسنده , , R. Fuji-Hara، نويسنده , , K. and Iijima، نويسنده , , T. and Imamura، نويسنده , , M. and Iwata، نويسنده , , S. and Kawai، نويسنده , , H. and Korpar، نويسنده , , S. and Kri?an، نويسنده , , P. and Kumita، نويسنده , , T. and Kuroda، نويسنده , , E. and Nishida، نويسنده , , S. and Ogawa، نويسنده , , S. and Pestotnik، نويسنده , , R. and Shiizuka، نويسنده , , S. and Sumiyoshi، نويسنده , , T. and Tabata، نويسنده , , M، نويسنده ,
Abstract :
A new hybrid avalanche photo-detector has been developed as a photon sensor for the Belle II RICH counter. Single-photon response was investigated in the presence of a magnetic field and excellent performance was demonstrated. In addition, the radiation damage due to the neutron dose was studied. By building a prototype consisting of six photo-detectors, a test beam experiment was carried out. We successfully obtained a single-photon Cherenkov resolution of 13.5 mrad with 15.3 photoelectrons and achieved a π / K separation of more than 6 σ at 4 GeV/c.
