Bootstrap Currents in Radio-frequency-driven Tokamak Equilibria PDF Download
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Languages : en
Pages :
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Book Description
Interest in the bootstrap current arising from neoclassical transport in tokamaks has increased recently in view of certain experimental observations. In this study, the bootstrap current is calculated for a number of rf current-driven tokamaks. Two-dimensional, self-consistent, steady-state tokamak MHD equilibria are obtained by including both the transport-driven bootstrap current and the externally driven rf current. The self-consistency is acomplished by iterating between two-dimensional MHD equilibrium calculations and the current calculations (including bootstrap and rf ray-tracing). Calculations for other reactor parameters of interest are also carried out. It is found that for reactor-grade plasmas, the bootstrap current contribution to the toroidal current is, in general, important. An approxiamte scaling law for GAMMA, based on parametric survey performed, is also obtained. 16 refs., 8 figs., 1 tab.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Interest in the bootstrap current arising from neoclassical transport in tokamaks has increased recently in view of certain experimental observations. In this study, the bootstrap current is calculated for a number of rf current-driven tokamaks. Two-dimensional, self-consistent, steady-state tokamak MHD equilibria are obtained by including both the transport-driven bootstrap current and the externally driven rf current. The self-consistency is acomplished by iterating between two-dimensional MHD equilibrium calculations and the current calculations (including bootstrap and rf ray-tracing). Calculations for other reactor parameters of interest are also carried out. It is found that for reactor-grade plasmas, the bootstrap current contribution to the toroidal current is, in general, important. An approxiamte scaling law for GAMMA, based on parametric survey performed, is also obtained. 16 refs., 8 figs., 1 tab.
Author: Joan Decker
Publisher:
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Category :
Languages : en
Pages : 10
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In advanced scenarios of steady-state operation in tokamaks, radio-frequency (RF) driven currents have to be calculated self-consistently with the bootstrap current (BC). This is addressed for the case of lower hybrid (LH) and electron cyclotron (EC) current drive. Keywords: Bootstrap current; Electron cyclotron current drive; Fokker-Planck equation; Lower hybrid heating and current drive; RF current drive.
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Category : Power resources
Languages : en
Pages : 544
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Category :
Languages : en
Pages : 15
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Book Description
Using the multi-species neoclassical treatment of Hirshman and Sigmar we study steady state bootstrap equilibria with seed currents provided by low frequency (ICRF) fast waves and with additional surface current density driven by lower hybrid waves. This study applies to reactor plasmas of arbitrary aspect ratio. IN one limit the bootstrap component can supply nearly the total equilibrium current with minimal driving power (
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Category : Aeronautics
Languages : en
Pages : 704
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Author: S. D. Schultz
Publisher:
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Category :
Languages : en
Pages : 4
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Category : Nuclear fusion
Languages : en
Pages : 332
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Author: Leslie Colin Woods
Publisher: John Wiley & Sons
ISBN: 3527607269
Category : Science
Languages : en
Pages : 252
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Book Description
In this new approach for a consistent transport theory in nuclear fusion processes Leslie Woods draws on over 40 years of fusion research to directly compare theoretical findings with experimental results, while taking into account recently discovered phenomena. This is thus the first book to find theoretical explanations to the sometimes-puzzling tokamak observations. Following a look at the quest for fusion power, the author goes on to examine tokamak magnetic fields and energy losses, as well as plasma flow and loop voltage. There is also a discussion of the technical constraints on the recently announced ITER design.
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Category : International agencies
Languages : en
Pages : 1040
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Author: K. Herschbach
Publisher: Newnes
ISBN: 0444599738
Category : Technology & Engineering
Languages : en
Pages : 892
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Book Description
The objective of the Symposium on Fusion Technology (SOFT) conference is to set the stage for the exchange of information on the design, construction, and operation of fusion experiments and the technology which is being developed for the next-step devices and for fusion reactors. These proceedings therefore present an up-to-date and throrough review of the state-of-the art in this dynamic field.
