Design for low beam loss in accelerators for intense neutron source applications

Author

Jameson, Robert A.

Author_Institution

Accel. Technol. Div., Los Alamos Nat. Lab., NM, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

3926

Abstract

Control of beam loss in intense ion linacs involves keeping beam spill below parts in 10^-5-10^-8/m by preventing total beam size from extending to the limiting apertures. Starting from good RMS design practices, new analysis of the machine architecture is described in terms of space-charge effects on the machine tune, free-energy constraint, and halo-producing mechanisms. It is shown that halos are produced by the time- (or position-) varying nature of common linac aspects (such as misalignment, mismatching, acceleration, and construction techniques) through collective core/single-particle interaction dynamics plus resonances

Keywords

beam handling techniques; ion accelerators; linear accelerators; particle beam diagnostics; tuning; RMS design practices; accelerators; beam loss control; beam spill; collective core/single-particle interaction dynamics; free-energy constraint; halo-producing mechanisms; intense ion linacs; intense neutron source applications; limiting apertures; low beam loss; machine tune; space-charge effects; Acceleration; Apertures; Ion accelerators; Linear accelerators; Neutrons; Particle beams; Radioactive materials; Size control; Structural beams; Waste materials;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309834

Filename

309834