Author/Authors :
Adachi، نويسنده , , I. and Dolenec، نويسنده , , R. Fuji-Hara، نويسنده , , K. and Iijima، نويسنده , , T. and Ishii، نويسنده , , Y. and Kawai، نويسنده , , H. and Korpar، نويسنده , , S. and Kri?an، نويسنده , , P. and Kumita، نويسنده , , T. and Kuroda، نويسنده , , E. and Miyazawa، نويسنده , , Y. and Nishida، نويسنده , , S. and Nishizawa، نويسنده , , I. and Ogawa، نويسنده , , S. and Pestotnik، نويسنده , , R. and Sawafuji، نويسنده , , N. and Shiizuka، نويسنده ,
Abstract :
A new hybrid avalanche photo-detector has been developed for the Belle RICH counter. The basic features of this device were examined with and without a magnetic field. By constructing a RICH prototype counter using 6 photo-detectors, we carried out a test beam experiment to confirm the performance. We obtained a single photon Cherenkov angle resolution of 12.8 mrad with 4.6 photo-electrons in our experimental setup, demonstrating that 4 σ π / K separation at 4 GeV/c was achieved.
Keywords :
Hybrid Photon Detector , rich , Belle , Particle identification
