J. STOVALL, S. NATH, H. TAKEDA, J. BILLEN, L.Young, M. Lynch, D. Rees (LANL), J. GALAMBOS, D. JEON, D. RAPARIA, J. WEI (SNS/ORNL), R. SUNDELIN (TJNAF), K. Crandall (TechSource), C. PAGANI, P. PIERINI (INFN)
The Spallation Neutron Source (SNS) linac is comprised of both normal and superconducting rf (SRF) accelerating structures. The SRF linac accelerates the beam from 186 to 1000 MeV through a series of ~100 low-b 'elliptical' multi-cell niobium cavities. This paper describes the SRF linac architecture, cavity design, rf power distribution topology, cavity field control philosophy, and the expected beam dynamics performance.
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