Developments in Accelerators for Heavy Ion Fusion

Keefe, D.

doi:10.1109/tns.1985.4334344

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…[6][7][8] Induction cells were also used on the Single Beam Transport Experiment, Multibeam Experiment, Neutralized Drift Compression Experiment, and the future ͑NDCXII͒, which are all multicell linear ion accelerators that are typically tens to hundreds of meters in length. [9][10][11][12][13] To explore the physics of a beam over a long path length, a ring topology is advantageous over a linear machine. Historically, most rings have used longitudinal rf focusing.…”

Section: Introductionmentioning

confidence: 99%

Longitudinal confinement and matching of an intense electron beam

et al. 2011

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An induction cell has successfully been demonstrated to longitudinally confine a space-charge dominated bunch for over a thousand turns ͑Ͼ11.52 km͒ in the University of Maryland Electron Ring ͓Haber et al., Nucl. Instrum. Methods Phys. Res. A 606, 64 ͑2009͒ and R. A. Kishek et al., Int. J. Mod. Phys. A 22, 3838 ͑2007͔͒.With the use of synchronized periodic focusing fields, the beam is confined for multiple turns overcoming the longitudinal space-charge forces. Experimental results show that an optimum longitudinal match is obtained when the focusing frequency for containment of the 0.52 mA beam is applied at every fifth turn. Containment of the beam bunch is achievable at lower focusing frequencies, at the cost of a reduction in the transported charge from the lack of sufficient focusing. Containment is also obtainable, if the confinement fields overfocus the bunch, exciting multiple waves at the bunch ends, which propagate into the central region of the beam, distorting the overall constant current beam shape.

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Section: Introductionmentioning

confidence: 99%

Longitudinal confinement and matching of an intense electron beam

et al. 2011

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“…It basically consists of an injector system to generate and condition four Cesium ion beams, accelerator sections incorporating 24 accelerating gaps in 30 focussing lattice periods, plus associated diagnostic, vacuum and control devices. MBE-4 and its experimental program are described further in other papers at this Conference [3][4][5][6][7][8] and in a separate report [9].…”

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confidence: 99%

MBE-4, a Heavy Ion Multiple-Beam Experiment

Avery

Chavis

Fessenden

et al. 1985

IEEE Trans. Nucl. Sci.

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Long path-length experimental studies of longitudinal phenomena in intense beams

et al. 2016

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Intense charged particle beams are nonneutral plasmas as they can support a host of plasma waves and instabilities. The longitudinal physics, for a long beam, can often be reasonably described by a 1-D cold-fluid model with a geometry factor to account for the transverse effects. The plasma physics of such beams has been extensively studied theoretically and computationally for decades, but until recently, the only experimental measurements were carried out on relatively short linacs. This work reviews experimental studies over the past five years on the University of Maryland Electron Ring, investigating longitudinal phenomena over time scales of thousands of plasma periods, illustrating good agreement with simulations.

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Developments in Accelerators for Heavy Ion Fusion

Cited by 3 publications

References 9 publications

Longitudinal confinement and matching of an intense electron beam

Longitudinal confinement and matching of an intense electron beam

MBE-4, a Heavy Ion Multiple-Beam Experiment

Long path-length experimental studies of longitudinal phenomena in intense beams

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