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Abstract

The effect of the beam deposition profile on heating and confinement in ASDEX has been studied by comparing plasmas with center-peaked and hollow beam deposition profiles. There is no significant difference in global energy confinement time and central electron energy density. A hollow deposition profile reduces the central electron energy density. A hollow deposition profile reduces the central electron heat transport at least by a factor of two. A beam energy of 75 keV/nucleon would be sufficient in order to generate the same (a/lambda=const.) deposition profile for a full density, full bore scenario in NET.

Additional information

Authors: SPETH E, MAX-PLANCK INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);EBERHAGEN A, MAX-PLANCK INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);JANESCHITZ G, MAX-PLANCK INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);STAEBLER A, MAX-PLANCK INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);VOLLMER O, MAX-PLANCK INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);KARGER F, MAX-PLANCK INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);KEILHACKER M, MAX-PLANCK INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);KISLYAKOV A, MAX-PLANCK INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);KLUEBER O MAX-PLANCK INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY), MAX-PLANCK INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY)
Bibliographic Reference: 12TH EUROPEAN CONFERENCE ON CONTROLLED FUSION AND PLASMA PHYSICS, BUDAPEST (HUNGARY), SEPT. 2-6, 1985 WRITE TO MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, 8046 GARCHING BEI MUENCHEN (GERMANY), MENTIONING REPORT IPP III/107, 1985, PP. 21-24.
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