Room-temperature linac structures for the Spallation Neutron Source

Author

Billen, J.H. ; Young, L.M. ; Kurennoy, S. ; Crandall, K.R.

Author_Institution

Los Alamos Nat. Lab., NM, USA

Volume

2

fYear

2001

fDate

2001

Firstpage

1104

Abstract

Los Alamos National Laboratory is building room-temperature rf accelerating structures for the Spallation Neutron Source (SNS). These structures, for Hⁱons, 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 13βλ 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

Keywords

accelerator cavities; ion accelerators; linear accelerators; 186 MeV; 2 MW; 4 MW; 402.5 MHz; 805 MHz; FFODDO lattice; FODO electromagnetic quadrupole lattice; RF cavities; Spallation Neutron Source; drift tube; drift-tube linac; permanent magnet quadrupoles; room-temperature RF accelerating structures; Aluminum; Couplers; Frequency; Laboratories; Lattices; Linear particle accelerator; Neutrons; Permanent magnets; Superconducting devices; Superconducting magnets;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.986594

Filename

986594