The commissioning of the SNS superconducting linac

The Spallation Neutron Source (SNS) superconducting linac has been commissioned in 2005 with an output beam energy tuned up to 950 MeV and a peak beam current of approximately 40 mA. Some of the most important contributions to the successful beam commissioning of the world's first pulsed proton SC linac are discussed in this paper, including cryomodule commissioning, numerical modeling for beam acceleration and transport in the accelerator, as well as the development of superconducting linac tune-up algorithms. Beam commissioning results and some beam dynamics studies of the SNS linac are also briefly described