Details

Autor(en) / Beteiligte

• Solano, E R
• Lomas, P J
• Alper, B
• Xu, G S
• Andrew, Y
• Arnoux, G
• Boboc, A
• Barrera, L
• Belo, P
• Beurskens, M N A
• Brix, M
• Crombe, K
• de la Luna, E
• Devaux, S
• Eich, T
• Gerasimov, S
• Giroud, C
• Harting, D
• Howell, D
• Huber, A
• Kocsis, G
• Korotkov, A
• Lopez-Fraguas, A
• Nave, M F F
• Rachlew, E
• Rimini, F
• Saarelma, S
• Sirinelli, A
• Pinches, S D
• Thomsen, H
• Zabeo, L
• Zarzoso, D

Titel

Observation of confined current ribbon in JET plasmas

Ist Teil von

• Physical review letters, 2010-05, Vol.104 (18), p.185003-185003, Article 185003

Ort / Verlag

United States

Erscheinungsjahr

2010

Quelle

PROLA

Beschreibungen/Notizen

• We report the identification of a localized current structure inside the JET plasma. It is a field-aligned closed helical ribbon, carrying current in the same direction as the background current profile (cocurrent), rotating toroidally with the ion velocity (corotating). It appears to be located at a flat spot in the plasma pressure profile, at the top of the pedestal. The structure appears spontaneously in low density, high rotation plasmas, and can last up to 1.4 s, a time comparable to a local resistive time. It considerably delays the appearance of the first edge localized mode.