Session CO6: Fast Ignition I
2:00 PM–4:48 PM, Monday, November 8, 2010
Room: Columbus GH
Chair: Brian Albright, Los Alamos National Laboratory
Abstract ID: BAPS.2010.DPP.CO6.6
Abstract: CO6.00006 : Fast Ignition Modeling with Realistic Electron Source
3:00 PM–3:12 PM
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Abstract 
Authors:
D.J. Strozzi
M. Tabak
A.J. Kemp
L. Divol
D.P. Grote
M.H. Key
(LLNL)
D.R. Welch
(Voss Scientific)
B.I. Cohen
R.P.J. Town
(LLNL)
We perform electron-beam transport simulations with the LSP code [D. R. Welch et al., Phys. Plasmas 13, 063105 (2006)] to determine the ignition requirements for cone-guided fast ignition. We run LSP as a direct-implicit PIC code, with a fluid treatment of the dense background. We use idealized plasma conditions for dense ($\sim$ 300 g/cm$^3$) DT fuel with a carbon or other low- to mid-Z cone. We do not include a laser, but excite an electron beam in the cone with a distribution based on explicit-PIC calculations with the PSC code of the short-pulse laser-plasma interaction. These simulations show the electron source has a two-temperature energy spectrum, and a relatively large angular divergence. This second fact pushes us toward ignition hot spots whose radial width exceeds their lateral depth, and larger beam energies. In particular, the role of short-pulse laser characteristics (e.g. wavelength), beam radius, magnetic-field focusing by resistivity tailoring, and cone-fuel standoff distance are explored. We are generalizing these burn-free calculations to include fusion reactions.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.DPP.CO6.6