2011 Particle Accelerator Conference - List of Authors (Lund, S.M.)

Paper

Title

Page

Numerical Solution for the Potential and Density Profile of a Thermal Equilibrium Sheet Beam

1659

S.M. Lund
LLNL, Livermore, California, USA
G. Bazouin
LBNL, Berkeley, California, USA

Funding: This research was performed under the auspices of the US DOE at the Lawrence Livermore and Lawrence Berkeley National Laboratories under contract numbers DE-AC52-07NA27344 and DE-AC02-05CH11231.
A one-dimensional Vlasov-Poisson model for sheet beams is presented to provide a simple framework for analysis of space-charge effects. Centroid and rms envelope equations including image charge effects are derived and reasonable parameter equivalences with commonly employed 2D transverse models of unbunched beams are established. This sheet beam model is applied to analyze several problems of fundamental interest. First, a sheet beam thermal equilibrium distribution in a continuous focusing channel is constructed and shown to have analogous properties to two- and three-dimensional thermal equilibrium models in terms of the equilibrium structure and Deybe screening properties. Second, the simpler formulation for sheet beams is exploited to explicitly calculate the distribution of particle oscillation frequencies within a thermal equilibrium beam. It is shown that as space-charge intensity increases, the frequency distribution becomes broad which suggesting robust stability properties for beams with strong space-charge.

WEOAS1

Inertial Fusion Driven by Intense Heavy-Ion Beams

1386

W. M. Sharp, J.J. Barnard, R.H. Cohen, M. Dorf, A. Friedman, D.P. Grote, S.M. Lund, L.J. Perkins, M.R. Terry
LLNL, Livermore, California, USA
F.M. Bieniosek, A. Faltens, E. Henestroza, J.-Y. Jung, A.E. Koniges, J.W. Kwan, E. P. Lee, S.M. Lidia, B.G. Logan, P.N. Ni, L.R. Reginato, P.K. Roy, P.A. Seidl, J.H. Takakuwa, J.-L. Vay, W.L. Waldron
LBNL, Berkeley, California, USA
R.C. Davidson, E.P. Gilson, I. Kaganovich, H. Qin, E. Startsev
PPPL, Princeton, New Jersey, USA
I. Haber, R.A. Kishek
UMD, College Park, Maryland, USA

Funding: Work performed under the auspices of the US Department of Energy by LLNL under Contract DE-AC52-07NA27344, by LBNL under Contract DE-AC02-05CH11231, and by PPPL under Contract DE-AC02-76CH03073.
Intense heavy-ion beams have long been considered a promising driver option for inertial-fusion energy production. This paper briefly compares inertial confinement fusion (ICF) to the more-familiar magnetic- confinement approach and presents some advantages of using beams of heavy ions to drive ICF instead of lasers. Key design choices in heavy-ion fusion (HIF) facilities are discussed, particularly the type of accelerator. We then review experiments carried out at Lawrence Berkeley National Laboratory (LBNL) over the past thirty years to understand various aspects of HIF driver physics. A brief review follows of present HIF research in the US and abroad, focusing on a new facility, NDCX-II, being built at LBNL to study the physics of warm dense matter heated by ions, as well as aspects of HIF target physics. Future research directions are briefly summarized.

Slides WEOAS1 [18.657 MB]

Paper	Title	Page
WEP099	Numerical Solution for the Potential and Density Profile of a Thermal Equilibrium Sheet Beam	1659
	S.M. Lund LLNL, Livermore, California, USA G. Bazouin LBNL, Berkeley, California, USA
	Funding: This research was performed under the auspices of the US DOE at the Lawrence Livermore and Lawrence Berkeley National Laboratories under contract numbers DE-AC52-07NA27344 and DE-AC02-05CH11231. A one-dimensional Vlasov-Poisson model for sheet beams is presented to provide a simple framework for analysis of space-charge effects. Centroid and rms envelope equations including image charge effects are derived and reasonable parameter equivalences with commonly employed 2D transverse models of unbunched beams are established. This sheet beam model is applied to analyze several problems of fundamental interest. First, a sheet beam thermal equilibrium distribution in a continuous focusing channel is constructed and shown to have analogous properties to two- and three-dimensional thermal equilibrium models in terms of the equilibrium structure and Deybe screening properties. Second, the simpler formulation for sheet beams is exploited to explicitly calculate the distribution of particle oscillation frequencies within a thermal equilibrium beam. It is shown that as space-charge intensity increases, the frequency distribution becomes broad which suggesting robust stability properties for beams with strong space-charge.

WEOAS1	Inertial Fusion Driven by Intense Heavy-Ion Beams	1386
	W. M. Sharp, J.J. Barnard, R.H. Cohen, M. Dorf, A. Friedman, D.P. Grote, S.M. Lund, L.J. Perkins, M.R. Terry LLNL, Livermore, California, USA F.M. Bieniosek, A. Faltens, E. Henestroza, J.-Y. Jung, A.E. Koniges, J.W. Kwan, E. P. Lee, S.M. Lidia, B.G. Logan, P.N. Ni, L.R. Reginato, P.K. Roy, P.A. Seidl, J.H. Takakuwa, J.-L. Vay, W.L. Waldron LBNL, Berkeley, California, USA R.C. Davidson, E.P. Gilson, I. Kaganovich, H. Qin, E. Startsev PPPL, Princeton, New Jersey, USA I. Haber, R.A. Kishek UMD, College Park, Maryland, USA
	Funding: Work performed under the auspices of the US Department of Energy by LLNL under Contract DE-AC52-07NA27344, by LBNL under Contract DE-AC02-05CH11231, and by PPPL under Contract DE-AC02-76CH03073. Intense heavy-ion beams have long been considered a promising driver option for inertial-fusion energy production. This paper briefly compares inertial confinement fusion (ICF) to the more-familiar magnetic- confinement approach and presents some advantages of using beams of heavy ions to drive ICF instead of lasers. Key design choices in heavy-ion fusion (HIF) facilities are discussed, particularly the type of accelerator. We then review experiments carried out at Lawrence Berkeley National Laboratory (LBNL) over the past thirty years to understand various aspects of HIF driver physics. A brief review follows of present HIF research in the US and abroad, focusing on a new facility, NDCX-II, being built at LBNL to study the physics of warm dense matter heated by ions, as well as aspects of HIF target physics. Future research directions are briefly summarized.
	Slides WEOAS1 [18.657 MB]