Recent results of H-mode studies on asdex

• Autor(es): Wagner, F. ; Field, A.R. ; Fussmann, G. ; Hofmann, J.V. ; Manso, M.E. ; Vollmer, O. ; Matias, José
• Data: 1990
• Identificador Persistente: http://hdl.handle.net/10198/9098
• Origem: Biblioteca Digital do IPB
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

In a comparative study of various confinement regimes the H-mode demonstrated the best performance. Confinement enhancement factors (above ITER 89-P L-mode scaling) in the range of 1.6 fH 2.8 have been achieved with values depending on the divertor configuration, the wall condition, ELM behaviour and the plasma ion spicies. Long-pulse H-phases, withELMs, of up to 3.5s with constant confinement time, recycling and impurity characteristics are archived. H* -mode operation is possible without a loss of current scaling at qa values as low as 2.2. The B-limit is the same with and without ELMs. Murakami parameters are similar in H-and L-modes.