Ferroelectric plasma source for heavy ion beam space charge neutralization

Efthimion, P. C.; Gilson, Erik; Davidson, Ronald C.; Grisham, L.; Logan, B.G.; Seidl, P.A.; Waldron, W.L.; Yu, S.S.

doi:10.1016/j.nima.2007.02.088

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…The maximum values used for and were determined by executing several successively finer grained simulations over very large ranges and finding that no behavior of interest appears to exist past the ranges stated here. The initial conditions for particle trajectories are: (9) ( 1 0 ) (11) at time…”

Section: Equations and Description Of Simulationmentioning

confidence: 99%

“…This "blow up" of the beam diameter is one of the primary limitations on transport and final spot size for a given beam, and charge-neutralization allows for the beam's space charge to be suppressed [8]. Many areas of physics, from heavy ion fusion studies [9,10,11,12] to spectroscopy [13] to ion implantation [14,15] and propulsion [16], benefit from a beam that is charge-neutralized.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Control of a Charge-neutralized Ion Beam

Phillips

Ordonez

2015

Physics Procedia

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Charge-neutralized ion beam control is more complex than control of charged beams. While focusing techniques for charged beams have been widely studied, many of the tools available for controlling charged beams are not suitable for chargeneutralized beams. Presented here is a scheme for controlling charge-neutralized beams using a distortion of a magnetic guide field via the presence of two current carrying wires. The extent to which the beam can be controlled is evaluated using a classical trajectory Monte Carlo simulation.

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Section: Equations and Description Of Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic Control of a Charge-neutralized Ion Beam

Phillips

Ordonez

2015

Physics Procedia

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Recent US advances in ion-beam-driven high energy density physics and heavy ion fusion

Logan

Bieniosek

Celata

et al. 2007

Nuclear Instruments and Methods in Physics Research Section A:

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During the past two years, significant experimental and theoretical progress has been made in the U.S. 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 > 50 X 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. IntroductionA coordinated heavy ion fusion science program by the Lawrence Berkeley National Laboratory, Lawrence Livermore National Laboratory, and Princeton Plasma Physics Laboratory (the HeavyIon Fusion Science Virtual National Laboratory), together with collaborators at Voss Scientific and Sandia National Laboratories, pursues research on compressing heavy ion beams towards the high intensities required for creating high energy density matter and fusion energy. In previous research, experiments [1] and simulations [2] showed >100X increases in focused beam intensities in the Neutralized Transport Experiment by transverse compression of an intense ion beam propagating through a background plasma to neutralize >90% of the beam space charge. Section 2 describes recent work on longitudinal compression of an intense beam within neutralizing plasma, and in Sec. 3 we describe studies of initial warm dense matter target experiments that can begin in 2008 after transverse and longitudinal beam compression are combined. Progress in testing a novel Pulse Line Ion Accelerator (PLIA) is described in Sec. 4, e-cloud experiments, theory and simulations in Sec 5, advanced injectors in Sec 6, and advanced theory and simulation models in Sec 7. Section 8 discusses potential applications to heavy ion fusion drivers, and conclusions are given in Sec. 9.

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A space-charge-neutralizing plasma for beam drift compression

Roy¹,

Seidl²,

Anders³

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

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Simultaneous radial focusing and longitudinal compression of intense ion beams are being studied to heat matter to the warm dense matter, or strongly coupled plasma regime. Higher compression ratios can be achieved if the beam compression takes place in a plasma-filled drift region in which the space-charge forces of the ion beam are neutralized. Recently, a system of four cathodic arc plasma sources has been fabricated and the axial plasma density has been measured. A movable plasma probe array has been developed to measure the radial and axial plasma distribution inside and outside of a -10 cm long final focus solenoid (FFS). Measured data show that the plasma forms a thin column of diameter -5mm along the solenoid axis when the FFS is powered with an 8T field. Measured plasma density of 2 lxlOI3 meets the challenge of ndZnb> I, where n,, and nb are the plasma and ion beam density, respectively, and 2 is the mean ion charge state of the plasma ions.

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Ferroelectric plasma source for heavy ion beam space charge neutralization

Cited by 5 publications

References 8 publications

Magnetic Control of a Charge-neutralized Ion Beam

Magnetic Control of a Charge-neutralized Ion Beam

Recent US advances in ion-beam-driven high energy density physics and heavy ion fusion

A space-charge-neutralizing plasma for beam drift compression

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