Photomultiplier assembly having universal alignment means

摘要

A photomultiplier assembly includes a tubular member of high magnetic permeability and a photomultiplier tube disposed within the tubular member. The photomultiplier tube has an encapsulated voltage distribution network attached thereto. A universal member extends longitudinally along at least a portion of the photomultiplier tube and provides a slip-fit between the photomultiplier tube and the tubular member so as to space the photomultiplier tube from the tubular member. The universal member has a retaining shoulder which projects radially inwardly between the photomultiplier tube and the voltage distribution network. A plurality of locking members are affixed between the universal member and the tubular member.