Adiabatic Compression of a Compact Torus

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Preprint_version_Adiabatic_Compression_of_a_Compact_Torus (1).pdf (1.47 MB)

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https://www.tandfonline.com/doi/full/10.1080/15361055.2017.1350488

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https://doi.org/10.1080/15361055.2017.1350488
 http://hdl.handle.net/11603/25579

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UMBC Mechanical Engineering Department
UMBC Faculty Collection

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Author/Creator ORCID

https://orcid.org/0000-0002-6830-3126

Date

2017-09-08

Type of Work

journal articles
preprints
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Citation of Original Publication

S. Woodruff, J. E. Stuber, C. Bowman, P. E. Sieck, P. A. Melnik, C. A. Romero-Talamás, J. B. O’Bryan & R. L. Miller (2017) Adiabatic Compression of a Compact Torus, Fusion Science and Technology, 72:4, 705-712, DOI: 10.1080/15361055.2017.1350488

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This is the submitted manuscript of an article published by Taylor & Francis in Fusion Science and Technology on 8 Sep 2017, available online: http://www.tandfonline.com/10.1080/15361055.2017.1350488.

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Abstract

A design point is presented here for a prototype fusion neutron source for waste transmutation ( n/s), based on the adiabatic compression of a compact torus (spheromak). The design utilizes the CORSICA (2D equilibrium) and NIMROD (3D time-dependent MHD) codes as well as analytic modeling with target parameters Rinitial = 0.5 m, Rfinal = 0.167 m, Tinitial = 0.4 keV, Tfinal = 4 keV, ninitial = 2 × 1020 m–3 and nfinal = 50 × 1020 m–3, with radial convergence of C = 3. 3D time-dependent simulations of spheromak compression agree well with analytic models for adiabatic compression, if the run-in time . Knowing required, we design coils and passive structure (with CORSICA) to ensure stability; then design the capacitor bank needed to both form the target plasma and drive coils. We specify target parameters for the compression in terms of plasma beta, formation efficiency and energy confinement.