60 GHz ecrh system for the PPL PDX machine

A 60-GHz kW Electron Cyclotron Resonance (ECR) heating system for the PDX machine is now under construction. It will use two of the pulse-type 60 GHz gyrotrons now being developed by Varian for the U.S. Department of Energy under a subcontract for Oak Ridge National Laboratory. The system will be used for various temperature profile, start-up, and heating experiments. This paper describes the design of the system and its physical configuration.