Author/Authors :
N. and Shiizuka، نويسنده , , Susumu and Adachi، نويسنده , , Ichiro and Dolenec، نويسنده , , Rok and Hara، نويسنده , , Koji and Iijima، نويسنده , , Toru and Ikeda، نويسنده , , Hirokazu and Imamura، نويسنده , , Miki and Iwata، نويسنده , , Syuuichi and Korpar، نويسنده , , Samo and Krizan، نويسنده , , Peter and Kumita، نويسنده , , Tetsuro and Kuroda، نويسنده , , Eiryo and Nishida، نويسنده , , Shohei and Ogawa، نويسنده , , Satoru a، نويسنده ,
Abstract :
For the upgrade of the Belle detector at the KEKB collider, we are developing a proximity focusing ring imaging Cherenkov detector using a silica aerogel as a radiator. An array of 144 channel HAPD (Hybrid Avalanche Photo Detector) will be used as the photo-detector. We have measured performance of the HAPDs, and succeeded to read out single-photon signals from the HAPD using custom-made ASICs that have been developed for this purpose. We have also performed a beam test with a 2 GeV/c electron beam and demonstrated more than 4 σ K / π separation performance at 4 GeV/c.
Keywords :
HAPD , Photo-detector , ASIC , rich , Belle
