Study of a 144 channel multi-anode hybrid avalanche photo-detector for the Belle II RICH counter

✍ Scribed by I. Adachi; R. Dolenec; K. Hara; T. Iijima; M. Imamura; S. Iwata; H. Kawai; S. Korpar; P. Križan; T. Kumita; E. Kuroda; S. Nishida; S. Ogawa; R. Pestotnik; S. Shiizuka; T. Sumiyoshi; M. Tabata; S. Tagai; R. Verheyden

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 853 KB
• Volume: 639
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2010.09.054

✦ Synopsis

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 p=K separation of more than 6s at 4 GeV/c.