Water Cooled Beam Dumps and Collimators for the Stanford Linear Accelerator

This paper deals with recent developments of power absorbing devices such as beam dumps, slits, and collimators. A brief discussion is given of the heat transfer experiments that have been conducted at the Stanford Linear Accelerator Center to establish design heat flux conditions for the various materials to be used for the power absorbing devices. Design concepts of a 2.2 MW, 11 to 25 GeV beam dump, as presently being built at SLAC, are also discussed. Finally, there is a typical analysis which leads to the design of a collimator, with emphasis on beam definition, heat transfer, thermal stress development and material selection.