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The efficient focusing, bunching and acceleration of high current, low energy heavy ion beams in an RFQ accelerator have been investigated. The considerations on the choice of the working frequency for increasing the beam current are introduced. Designed using an unconventional procedure, this 20 emA RFQ will be able to work with A / q ≤ 60 ion beams in the β range of 0.002–0.016. The beam dynamics simulation shows that the design fulfills all requirements with good beam quality and a compact structure. [ABSTRACT FROM AUTHOR]

Abstract: During the past two years, significant experimental and theoretical progress has been made in the US heavy ion fusion science program in longitudinal beam compression, ion-beam-driven warm dense matter, beam acceleration, high brightness beam transport, and advanced theory and numerical simulations. Innovations in longitudinal compression of intense ion beams by propagating through background plasma enable initial beam target experiments in warm dense matter to begin within the next two years. We are assessing how these new techniques might apply to heavy ion fusion drivers for inertial fusion energy. [Copyright &y& Elsevier]