Title :
Design of FFAGs based on a FODO lattice
Author :
Berg, J. Scott ; Johnstone, Carol
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
An FFAG is a lattice with fixed magnetic fields that has an extremely wide energy acceptance. One particularly simple type of FFAG is based on a FODO lattice, where both quads can be combined-function bending/quadrupole magnets. The spaces between the combined-function magnets are left open for RF cavities and other hardware. This paper describes a general method for creating lattice designs for this type of lattice which gives the lattice optimal properties for an FFAG accelerator. The properties of this lattice as a function of input parameters are explored. The use of sextupoles to improve lattice properties is also explored.
Keywords :
accelerator RF systems; accelerator cavities; accelerator magnets; linear accelerators; FFAG accelerator design; FODO lattice; RF cavities; combined-function bending/quadrupole magnets; fixed magnetic fields; fixed-field alternating gradient; lattice optimal properties; linac; quads; sextupoles; Acceleration; Compaction; Frequency synchronization; Lattices; Linear particle accelerator; Magnets; Radio frequency; Resonance; Voltage;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1289070
