Author/Authors :
Matsumoto، نويسنده , , T. and Korpar، نويسنده , , S. and Adachi، نويسنده , , I. and Fratina، نويسنده , , S. and Iijima، نويسنده , , T. and Ishibashi، نويسنده , , R. and Kawai، نويسنده , , H. and Kri?an، نويسنده , , P. and Ogawa، نويسنده , , S. and Pestotnik، نويسنده , , R. and Saitoh، نويسنده , , S. and Seki، نويسنده , , T. and Sumiyoshi، نويسنده , , T. and Suzuki، نويسنده , , K. and Tabata، نويسنده , , T. and Uchida، نويسنده , , Y. and Unno، نويسنده , , Y.، نويسنده ,
Abstract :
A proximity focusing ring imaging Cherenkov detector using aerogel as the radiator is studied for the upgrade of the Belle detector at KEK-B-factory. The second beam test of the detector was carried out using the recently introduced flat-panel PMTs (Hamamatsu H8500) and newly developed aerogel samples having better transmission length. We observe Cherenkov rings with a single photon resolution of about 14 mrad, and typically on average 6 detected photons per ring. The results show that such a detector is a promising step in R&D for upgrading the Belle spectrometer.
Keywords :
aerogel , Ring imaging Cherenkov counter , Proximity focusing , Particle identification , Belle , Flat-panel PMT
