Low cross-talk fiber readout of scintillating detectors

After evaluating and optimizing several multichannel photomultiplier tubes and small low-cost side-window photomultiplier tubes, two methods are devised which, depending on the particular application, are viable readout systems for a small to moderate number of fibers. The new 16-channel Hamamatsu R4760 photomultiplier tube offers, when timing information is utilized, the lowest near-neighbor crosstalk (<-0.05%). The 93 1B side-window photomultiplier, which is 30 mm in diameter, is also a good choice for moderate size multifiber readout when no crosstalk can be tolerated.<>