High-power linac for the spallation neutron source

Abstract

The Spallation Neutron Source (SNS) will be the world's most intens!;: source of neutrons for fundamental science and industrial applications. In this paper, we review the physics requirements, design, construction, installation, and first commissioning results of the I-GeV, 1.4-MW average power RF linac for SNS. The overall project is 82 % complete, with most of the linac hardware manufactured and delivered to the SNS site. Commissioning of the first drift tube linac tanks was a success. Approximately 100 % of the beam was transmitted at full average current while achieving the emittance goal of less than 0.3 π mm-mrad.