Physics of advanced, high magnetic field experiments
- IFP, Milano (Italy)
- CRE, Bologna (Italy)
- MIT, Cambridge, MA (United States)
In identifying the optimal performance of an advanced experiment such as Ignitor presently known constraints on the plasma paramenters that can be achieved are taken into account. These constraints are mutually linked. In particular, Ignitor can operate well within the known limitations for the particle density and the plasma pressure (beta limit). Detailed simulations of the plasma current ramp up and of plasma heating to ignition have been carried out. These are consistent with the engineering constraints of the machine design. A special updated version of the free boundary, 1 + {1/2}D JETTO transport code has been employed. The plasma shape and position are controlled to achieve consistency with the reference magnetic confinement configurations, introducing also the first wall contour as a bound. The avoidance of the disruption boundaries in the (l{sub i}, q{sub {psi}}) diagram is assured while taking the technical constraints on the poloidal coils (e.g. mechanical and thermal stresses) into account. Transport diffusion coefficients which lead to energy confinement times close to those predicted by {open_quotes}L-mode{close_quotes} scalings have been chosen. Special attention is being given to the influence of the parameters of the outermost region of the plasma column on the evolution of the current density.
- OSTI ID:
- 489471
- Report Number(s):
- CONF-960354-; TRN: 97:011618
- Resource Relation:
- Conference: International Sherwood fusion theory conference, Philadelphia, PA (United States), 18-20 Mar 1996; Other Information: PBD: 1996; Related Information: Is Part Of 1996 international Sherwood fusion theory conference; PB: 244 p.
- Country of Publication:
- United States
- Language:
- English
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