Photomultiplier tubes for Satellite instrumentation.

The rapid increase in the use of photomultiplier tubes (PMT's) in satellite instrumentation has created the need for a practical engineering discussion of their application as circuit components. This paper discusses the basic theory of operation and stresses their measurable parameters needed in specifying and applying them in instrumentation systems. Results of unique experiments to determine recovery time after exposure to light or temperature are given. Various protective measures, required for safe operation of the PMT's are discussed. Finally, a specific application of a PMT to the PEP/OAO Satellite Program is discussed. Examples of the necessary design equations and constraints are given and actual performance characteristics stated.