Newly Developed Photomultiplier Tubes with Position Sensitivity Capability

This paper describes several newly developed PMTs which utilize Multi-Anode, segmented dynodes or resistive anodes. The triode tube with 4 segmented dynodes and the 20" dia. Hemispherical PMT with 4 segmented anode has been tested and shown excellent capability of spatial resolution and low cross talk. The Fine Mesh Dynode PMTs with Multi-Anode or resistive anode also have been developed and their performances have been tested showing good position sensitivity. These features seem to be useful tools especially for scintillation imaging applied to nuclear and medical instrumentation.