Study of a 144 channel multi-anode hybrid avalanche photo-detector for the Belle II RICH counter
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 6σ at 4 GeV/ c.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- May 2011
- DOI:
- 10.1016/j.nima.2010.09.054
- Bibcode:
- 2011NIMPA.639..103A