Production status of 805-MHz, 550 kW pulsed klystrons for the Spallation Neutron Source

The Spallation Neutron Source (SNS) is an accelerator-based neutron source. The SNS will provide the most intense pulsed neutron beams in the world for scientific research and industrial development. CRI is supporting the effort by providing 81 pulsed klystrons, model VKP-8291A, for the superconducting portion of the accelerator. The primary output power requirements are 550 kW peak, 49.5 kW average at 805 MHz, with an electron beam-to-rf conversion efficiency of 65%.