Alternating-phase focusing with amplitude modulation

Author

Sagalovsky, L. ; Delayen, J.R.

Author_Institution

Div. of Eng. Phys., Argonne Nat. Lab., IL, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

288

Abstract

We have previously developed a model of alternating-phase focusing (APF) applicable to ion linacs comprised of short independently controlled cavities. The main beam dynamical aspects of APF are adequately described by four parameters: equilibrium synchronous phase, phase modulation amplitude, length of APF period, and incremental energy gain. In this paper we report on an extension of the analysis to include simultaneous modulation of the accelerating field amplitude. Two additional parameters are included: relative phase between the amplitude and phase modulation and magnitude of the amplitude modulation. The effects of amplitude modulation on the stable regions and longitudinal acceptance are discussed

Keywords

beam handling techniques; ion accelerators; linear accelerators; particle beam diagnostics; APF period length; accelerating field amplitude; alternating-phase focusing; amplitude modulation; beam dynamical aspects; equilibrium synchronous phase; incremental energy gain; ion linacs; longitudinal acceptance; phase modulation amplitude; short independently controlled cavities; Acceleration; Amplitude modulation; Analytical models; Delay; Laboratories; Linear accelerators; Maxwell equations; Phase modulation; Physics; Stability;

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.1993.308801

Filename

308801