The Unified effect of counter-toroidal rotation and power across separatrix on type-I ELMs in JT-60U

Urano, Hajime; Oyama, Naoyuki; Kamiya, Kensaku; Aiba, Nobuyuki; Kamada, Yutaka; Fujita, Takaaki; JT-60 Team

The unified effect of counter toroidal rotation and heating power on type-I ELMs was investigated in JT-60U tokamak. ELM frequency $f_mathrm{ELM}$ increased monotonically together with the power across the sepratrix $P_mathrm{sep}$ for all the cases of tangential NBs. However, dependence of $f_mathrm{ELM}$ on $P_mathrm{sep}$ was explicitly stronger than a proportional relation when the perpendicular NBs were injected. The toroidal rotation velocity at the H-mode pedestal $rm_T^{rm PED}$ shifted continuously in counter direction when the perpendicular NBs were applied. At fixed values of $rm_T^{rm PED}$ , $f_mathrm{ELM}$ increased clearly in proportion to $P_mathrm{sep}$ .

Language	:	English
Journal	:	Nuclear Fusion
Volume	:	52
Number	:	10
Pages	:	p.103012_1 - 103012_7
Publication Year/Month	:	2012/10
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Paper URL	:	https://doi.org/10.1088/0029-5515/52/10/103012
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Keywords	:	no keyword
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Registration No. : AA20111067
JAEA Abstracts No. : 40001389
Paper Submission No. : 11466

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