Progress in beam focusing and compression for warm-dense matter experiments

Seidl, P.A.; Anders, André; Bieniosek, F.M.; Barnard, J.J.; Calanog, Jae; Chen, A.X.; Cohen, R. H.; Coleman, J. E.; Dorf, M.; Gilson, Erik; Grote, D.P.; Jung, Jin‐Young; Leitner, M.; Lidia, Steven; Logan, B.G.; Ni, P.; Roy, P.K.; Bogert, K. Van den; Waldron, W.L.; Welch, D. R.

doi:10.1016/j.nima.2009.03.254

Cited by 49 publications

(30 citation statements)

References 13 publications

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“…NDCX-I currently produces a 350 kV, 25 mA singly charged potassium ion beam with a pulse duration up to 10 µs [3]. Four solenoids provide beam confinement and impart a radial convergence towards a final, high field solenoid.…”

Section: Ndcx-i Planar Targetsmentioning

confidence: 99%

“…Secondly, there are several energies where the ion energy loss rate (dE/dX) is nearly constant (for example, at the Bragg peak), so that the deposition may be arranged to be nearly uniform over regions that can be macroscopically diagnosed. In the US, high current low energy accelerators are currently exploiting the plateau in dE/dX from nuclear stopping on the Neutralized Drift Compression Experiment (NDCX-I) [3] and plans are being developed to exploit deposition at the Bragg peak on an upgrade called NDCX-II. This is in contrast to the European approach at GSI using high energy but lower current accelerators, that operate near a minimum in dE/dX providing large volumes of uniform energy deposition [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Ion beam heated target simulations for warm dense matter physics and inertial fusion energy

Barnard

Armijo

Bailey

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

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Abstract. Hydrodynamic simulations have been carried out using the multi-physics radiation hydrodynamics code HYDRA and the simplified one-dimensional hydrodynamics code DISH. We simulate possible targets for a near-term experiment at LBNL (the Neutralized Drift Compression Experiment, NDCX) and possible later experiments on a proposed facility (NDCX-II) for studies of warm dense matter and inertial fusion energy related beam-target coupling. Simulations of various target materials (including solids and foams) are presented. Experimental configurations include single pulse planar metallic solid and foam foils. Concepts for double-pulsed and ramped-energy pulses on cryogenic targets and foams have been simulated for exploring direct drive beam target coupling, and concepts and simulations for collapsing cylindrical and spherical bubbles to enhance temperature and pressure for warm dense matter studies

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Section: Ndcx-i Planar Targetsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ion beam heated target simulations for warm dense matter physics and inertial fusion energy

Barnard

Armijo

Bailey

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

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“…Beam pulse compression using space charge neutralized rotation in phase space has been achieved. Initial experiments have been performed using the 350-keV K + beam from the Neutralized Drift Compression Experiment (NDCX) accelerator [5]. The WDM conditions are achieved by combined longitudinal and transverse neutralized drift compression to provide a hot spot on the target with a beam spot size of !1 mm, and pulse length ~1-3 ns.…”

Section: Introductionmentioning

confidence: 99%

Funnel cone for focusing intense ion beams on a target

Bieniosek

Henestroza

2010

Laser Part. Beams

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“…While many beams will be needed for inertial fusion, current experiments aim at the development of a single beam of heavy ions such as K + or Li + (here, "heavy" is understood in comparison to the mass of protons). The ion beam needs to be compressed radially and longitudinally to reach on target a current in the kA range and with a pulse duration of ~1 ns [1]. A very strong space charge would build up unless a means of ion space charge compensation is provided.…”

Section: Introductionmentioning

confidence: 99%

A seemingly simple task: Filling a solenoid volume in vacuum with dense plasma

et al. 2010

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Abstract-Space-charge neutralization of a pulsed, high-current ion beam is required to compress and focus the beam on a target for warm dense matter physics or heavy ion fusion experiments. We described attempts to produce dense plasma in and near the final focusing solenoid through which the ion beam travels, thereby providing an opportunity for the beam to acquire the necessary charge-compensating electrons. Among the options are plasma injection from four pulsed vacuum arc sources located outside the solenoid, and using a high current (> 4 kA) pulsed vacuum arc plasma from a ring cathode near the edge of the solenoid. The plasma distribution is characterized by photographic means and by an array of movable Langmuir probes. The plasma is produced at several cathode spots distributed azimuthally on the ring cathode.Beam neutralization and compression are accomplished, though issues of density, uniformity, and pulse-to-pulse reproducibly remain to be solved.

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Progress in beam focusing and compression for warm-dense matter experiments

Abstract: The Heavy-Ion Fusion Sciences Virtual National Laboratory is pursuing an approach to target heating experiments in the Warm Dense Matter regime, using space-

Cited by 49 publications

References 13 publications

Ion beam heated target simulations for warm dense matter physics and inertial fusion energy

Ion beam heated target simulations for warm dense matter physics and inertial fusion energy

Funnel cone for focusing intense ion beams on a target

A seemingly simple task: Filling a solenoid volume in vacuum with dense plasma

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