Effects of type-I edge-localized modes on transport in ASDEX Upgrade
W Suttrop; O Gehre; J C Fuchs; H Reimerdes; W Schneider; J Schweinzer; the ASDEX Upgrade team; W Suttrop; Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching, Germany; O Gehre; Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching, Germany; J C Fuchs; Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching, Germany; H Reimerdes; Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching, Germany; W Schneider; Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching, Germany; J Schweinzer; Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching, Germany; the ASDEX Upgrade team; Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching, Germany
Журнал:
Plasma Physics and Controlled Fusion
Дата:
1998-05-01
Аннотация:
Particle and energy losses due to type-I edge-localized modes (ELMs) and the effect of H-mode pedestal parameters on global confinement are studied for H-Mode discharges in ASDEX Upgrade. ELM frequency as well as particle and heat losses during ELMs are strongly affected by gas puffing, impurity injection, variation of plasma current and heating power. However the average power loss due to ELMs shows much less variation, and cannot account for the variations of stored energy encountered, e.g. in a plasma current scan. A good correlation between pedestal pressure and stored energy is found for type-I ELMy discharges.
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