Author/Authors :
Lehmann، نويسنده , , A. and Britting، نويسنده , , A. and Eyrich، نويسنده , , W. and Pizzolotto، نويسنده , , C. and Teufel، نويسنده , , Luca A. van Duren، نويسنده , , M. and Fِhl، نويسنده , , K. and Hoek، نويسنده , , M. and Lu، نويسنده , , S. and Schepers، نويسنده , , Christian G. and Seitz، نويسنده , , B. and Sfienti، نويسنده , , C.، نويسنده ,
Abstract :
Microchannel plate (MCP) photomultipliers (PMTs) are attractive photon sensors for the PANDA DIRC. The gain and the time resolution of different types of MCP-PMTs were studied as a function of the magnetic field and of the field orientation. It was found that for an efficient single photon detection a pore diameter of 10 μ m or less will be needed in the 2 T magnetic field of PANDA. Both gain and time resolution are best with a pore size of 6 μ m . In contrast to the gain the time resolution shows only a weak dependence on the magnetic field and its orientation. The best transit time resolution for single photons was evaluated to be σ ≈ 20 ps with no magnetic field applied.
Keywords :
PANDA , MCP-PMT , Magnetic field , gain , Time resolution , Photodetectors , Single photon
