Room-temperature linac structures for the Spallation Neutron Source

J.H. Billen, L.M. Young, S. Kurennoy, K.R. Crandall
PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)  
Los Alamos National Laboratory is building roomtemperature rf accelerating structures for the Spallation Neutron Source (SNS). These structures, for H − ions, consist of six 402.5-MHz, 2-MW drift-tube linac (DTL) tanks from 2.5 to 87 MeV followed by four 805-MHz, 4-MW coupled-cavity linac (CCL) modules to 186 MeV. The DTL uses permanent magnet quadrupoles inside the drift tubes arranged in a 6βλ FFODDO lattice with every third drift tube available for diagnostics and steering. The CCL uses a
more » ... λ FODO electromagnetic quadrupole lattice. Diagnostics and magnets occupy the 2.5βλ spaces between 8-cavity segments. This paper discusses design of the rf cavities and low-power modeling work.
doi:10.1109/pac.2001.986594 fatcat:ac5hnssfizb4ppejqkuil3scu4