THE DESIGN OF A HIGH CURRENT, HIGH DUTY FACTOR RFQ FOR THE SNS ❊

Abstract

The Lawrence Berkeley National Laboratory (LBNL) is presently designing and building the 2.5 MeV injector for the Spallation Neutron Source (SNS). This injector comprises an H- ion source, a radio-frequency quadrupole (RFQ) and a beam transport line including a fast chopper. This paper will briefly describe the injector components and then focus on the design and fabrication details of the RFQ, from the beam dynamics, to the mechanical and electrical engineering design. The first module of the RFQ has been built and is presently undergoing tests at LBNL. A status report of the first module is included, describing the completion of the fabrication and low power testing. 1