Role of pressure gradient on Intrinsic toroidal rotation in tokamak plasmas

Yoshida, Maiko; Kamada, Yutaka; Takenaga, Hidenobu; Sakamoto, Yoshiteru; Urano, Hajime; Oyama, Naoyuki; Matsunaga, Go; JT-60 Team

Non-diffusive terms of toroidal momentum transport are observed in JT-60U tokamak plasmas. The characteristic of driving source of plasma toroidal rotation driven by the pressure gradient is found using transient momentum transport analysis. The difference between the measured toroidal rotation velocity (Vt) profile and the reproduced one using momentum transport coefficients is observed in high pressure plasmas. This difference can be explained by the effect of the spontaneous rotation driven by the pressure gradient. In addition, a structural correlation between the non-diffusive inward flux and the radial shear of the toroidal rotation velocity (-dVt/dr) has been found, and the non-diffusive inward flux increases with increasing -dVt/dr.

Language	:	English
Journal	:	Physical Review Letters
Volume	:	100
Number	:	10
Pages	:	p.105002_1 - 105002_4
Publication Year/Month	:	2008/03
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Paper URL	:	https://doi.org/10.1103/PhysRevLett.100.105002
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Keywords	:	no keyword
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Article of JAEA R&D Review	:	Intrinsic Rotation Due to Plasma Pressure Discovered; Toward the Understanding of High Pressure / Highly Self-Regulating Plasma[/]
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Registration No. : AA20070147
JAEA Abstracts No. : 36000717
Paper Submission No. : 3997

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