Techniques for correcting velocity and density fluctuations of ion beams in ion inducti on accelerators

It is well known that the imperfection of pulse power sources that drive the linear induction accelerators can lead to time-varying fluctuation in the accelerating voltages, which in turn leads to longitudinal emittance growth. We show that this source of emittance growth is correctable, even in spa...

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Bibliographic Details
Published in:Physical review special topics. PRST-AB. Accelerators and beams 2013-06, Vol.16 (6), p.062804, Article 062804
Main Authors: Woo, K. M., Yu, S. S., Barnard, J. J.
Format: Article
Language:English
Subjects:
Emittance
Ion beams
Particle in cell technique
Power sources
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Summary:It is well known that the imperfection of pulse power sources that drive the linear induction accelerators can lead to time-varying fluctuation in the accelerating voltages, which in turn leads to longitudinal emittance growth. We show that this source of emittance growth is correctable, even in space-charge dominated beams with significant transients induced by space-charge waves. Two correction methods are proposed, and their efficacy in reducing longitudinal emittance is demonstrated with three-dimensional particle-in-cell simulations.
ISSN:1098-4402
1098-4402
2469-9888
DOI:10.1103/PhysRevSTAB.16.062804