Author/Authors :
Eisenhardt، نويسنده , , Stephan and Luo، نويسنده , , Haofei and Morris، نويسنده , , Adam and Needham، نويسنده , , Matthew and Neill، نويسنده , , Josh، نويسنده ,
Abstract :
We report on studies of the Hamamatsu model R11265 Multianode Photomultiplier as part of the effort to qualify their use in the upgrade of the LHCb Ring Imaging Cherenkov Detectors. Comparisons with the known model R7600 are also made. Of particular interest is the behaviour of the MaPMT in magnetic fields comparable to the residual fringe field of the LHCb bending magnet ranging up to 25 Gauss.