Abstract
Scoop limited discharges in PDX with neutral beam heating achieved energy and particle confinement times higher than those inferred from similar poloidal rail limiter discharges. We present transport simulations using TRANSP and BALDUR and neutral simulations using DEGAS. Large neutral densities and ionization rates localized near the scoop are inferred. Thermal neutral ionization increases the edge electron density substantially, resulting in a flattened density profile. Fueling from the scoop limiter is deeper than from simple limiters.
Original language | English (US) |
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Pages (from-to) | 425-429 |
Number of pages | 5 |
Journal | Journal of Nuclear Materials |
Volume | 128-129 |
Issue number | C |
DOIs | |
State | Published - Dec 1984 |
Externally published | Yes |
Keywords
- energy confinement
- particle confinement
- pump limiter
- scoop limiter
- transport simulation
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- General Materials Science
- Nuclear Energy and Engineering