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Abstract

A relatively small size, high field tokamak experiment (IGNITOR) has been proposed to investigate the physics of ignition and fusion alpha particles. The 1½-D transport code JETTO is used to assess the possible performance of this machine. To investigate the influence of size, the same model is also applied to a NET-like plasma, with a physics similar to that of IGNITOR. Further simulations of the actual NET II-25 MA machine are performed, taking into account the full NET operating scenario. On the basis of the Tang and Redi transport model, it is concluded that many conditions would have to be fulfilled simultaneously to obtain IGNITOR discharges in which alpha-particle heating becomes the dominant heating mechanism within the flat-top time. The simulations show that ignition is more easily reached in the NET-like plasma. Simulations of the NET II-25 MA operating scenario confirm that ignition can be obtained in NET, in the H-mode, under a variety of conditions.

Additional information

Authors: NOCENTINI A, NET Team, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);SCHULTZ C G, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, Lausanne (CH)
Bibliographic Reference: Report: LRP 409/90 EN (1990) 60 pp.
Availability: Available from Confédération Suisse, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, 21 avenue des Bains, 1007 Lausanne (CH)
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