Title :
Alternating-phase focusing with amplitude modulation
Author :
Sagalovsky, L. ; Delayen, J.R.
Author_Institution :
Div. of Eng. Phys., Argonne Nat. Lab., IL, USA
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;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.308801
