New methods in WARP, a particle-in-cell code for space-charge dominated beams

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The current U.S. approach for a driver for inertial confinement fusion power production is a heavy-ion induction accelerator; high-current beams of heavy ions are focused onto the fusion target. The space-charge of the high-current beams affects the behavior more strongly than does the temperature (the beams are described as being ``space-charge dominated``) and the beams behave like non-neutral plasmas. The particle simulation code WARP has been developed and used to study the transport and acceleration of space-charge dominated ion beams in a wide range of applications, from basic beam physics studies, to ongoing experiments, to fusion driver concepts. WARP combines ... continued below

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7 p.

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Grote, D., LLNL January 12, 1998.

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The current U.S. approach for a driver for inertial confinement fusion power production is a heavy-ion induction accelerator; high-current beams of heavy ions are focused onto the fusion target. The space-charge of the high-current beams affects the behavior more strongly than does the temperature (the beams are described as being ``space-charge dominated``) and the beams behave like non-neutral plasmas. The particle simulation code WARP has been developed and used to study the transport and acceleration of space-charge dominated ion beams in a wide range of applications, from basic beam physics studies, to ongoing experiments, to fusion driver concepts. WARP combines aspects of a particle simulation code and an accelerator code; it uses multi-dimensional, electrostatic particle-in-cell (PIC) techniques and has a rich mechanism for specifying the lattice of externally applied fields. There are both two- and three-dimensional versions, the former including axisymmetric (r-z) and transverse slice (x-y) models. WARP includes a number of novel techniques and capabilities that both enhance its performance and make it applicable to a wide range of problems. Some of these have been described elsewhere. Several recent developments will be discussed in this paper. A transverse slice model has been implemented with the novel capability of including bends, allowing more rapid simulation while retaining essential physics. An interface using Python as the interpreter layer instead of Basis has been developed. A parallel version of WARP has been developed using Python.

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7 p.

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OSTI as DE98058836

Other: FDE: PDF; PL:

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  • 16. international conference on numerical simulation of plasmas, Goleta, CA (United States), 10-12 Feb 1998

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  • Other: DE98058836
  • Report No.: UCRL-JC--129415
  • Report No.: CONF-980217--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 295439
  • Archival Resource Key: ark:/67531/metadc676295

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  • January 12, 1998

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  • July 25, 2015, 2:20 a.m.

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  • April 6, 2017, 6:06 p.m.

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Grote, D., LLNL. New methods in WARP, a particle-in-cell code for space-charge dominated beams, article, January 12, 1998; California. (digital.library.unt.edu/ark:/67531/metadc676295/: accessed June 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.