Numerical analysis of the effect of fast-ion losses on plasma rotation in a tokamak with toroidal field ripple

2008 ◽  
Vol 48 (8) ◽  
pp. 085003 ◽  
Author(s):  
M. Honda ◽  
T. Takizuka ◽  
A. Fukuyama ◽  
M. Yoshida ◽  
T. Ozeki
Keyword(s):  
Numerical Analysis ◽  
Toroidal Field ◽  
Plasma Rotation ◽  
Toroidal Field Ripple ◽  
Fast Ion

Effect of up-down asymmetric toroidal field ripple on fast ion loss in JT-60U

1997 ◽  
Vol 37 (4) ◽  
pp. 437-444 ◽  
Author(s):  
M Isobe ◽  
K Tobita ◽  
T Nishitani ◽  
Y Kusama ◽  
M Sasao
Keyword(s):  
Toroidal Field ◽  
Toroidal Field Ripple ◽  
Fast Ion

The roles of plasma rotation and toroidal field ripple on the H-mode pedestal structure in JT-60U

2006 ◽  
Vol 48 (5A) ◽  
pp. A193-A199 ◽  
Author(s):  
H Urano ◽  
K Kamiya ◽  
Y Koide ◽  
T Takizuka ◽  
N Oyama ◽  
...  
Keyword(s):  
Toroidal Field ◽  
Plasma Rotation ◽  
Toroidal Field Ripple

Simulations of NBI fast ion loss in the presence of toroidal field ripple on EAST

2021 ◽  
Author(s):  
Yingfeng Xu ◽  
Youjun Hu ◽  
Xiaodong Zhang ◽  
Xingyuan Xu ◽  
Lei Ye ◽  
...  
Keyword(s):  
Toroidal Field ◽  
Toroidal Field Ripple ◽  
Fast Ion

scholarly journals Effects of toroidal field ripple on suprathermal ions in tokamak plasmas

1981 ◽  
Vol 26 (2) ◽  
pp. 283-307 ◽  
Author(s):  
R. J. Goldston ◽  
H. H. Towner
Keyword(s):  
Pitch Angle ◽  
Toroidal Field ◽  
Tokamak Plasmas ◽  
Drift Diffusion ◽  
Order Unity ◽  
The Third ◽  
Angle Scattering ◽  
Toroidal Field Ripple ◽  
Suprathermal Ions ◽  
Fast Ion

Analytic calculations of three important effects of toroidal field ripple on suprathermal ions in tokamak plasmas are presented. In the first process, collisional ripple-trapping, ions become trapped in local magnetic wells near their banana tips owing to pitch-angle scattering as they traverse the ripple on barely unripple-trapped orbits. In the second process, collisionless ripple-trapping, ions are captured (again near a banana tip) owing to their finite orbits, which carry them out into regions of higher ripple. In the third process, banana-drift diffusion, fast-ion banana orbits fail to close precisely, due to a ripple-induced ‘variable lingering period’ near the banana tips. These three mechanisms lead to substantial radial transport of banana-trapped, neutral-beam-injected ions when the quantity α*≡ε|τ|/Nqδ is of order unity or smaller.

Numerical study of fast ion behavior in the presence of magnetic islands and toroidal field ripple in the EAST tokamak

2014 ◽  
Vol 23 (10) ◽  
pp. 105201
Author(s):  
Wei Zhang ◽  
Li-Qun Hu ◽  
You-Wen Sun ◽  
Si-Ye Ding ◽  
Zi-Jun Zhang ◽  
...  
Keyword(s):  
Numerical Study ◽  
Toroidal Field ◽  
Magnetic Islands ◽  
Toroidal Field Ripple ◽  
Fast Ion

Fast ion losses due to toroidal field ripple in JT-60U

1994 ◽  
Vol 34 (8) ◽  
pp. 1097-1109 ◽  
Author(s):  
K Tobita ◽  
K Tani ◽  
T Nishitani ◽  
K Nagashima ◽  
Y Kusama
Keyword(s):  
Toroidal Field ◽  
Toroidal Field Ripple ◽  
Fast Ion

Effect of Toroidal Field Ripple on Fast Ion Behavior in a Tokamak

1981 ◽  
Vol 50 (5) ◽  
pp. 1726-1737 ◽  
Author(s):  
Keiji Tani ◽  
Masafumi Azumi ◽  
Hiroshi Kishimoto ◽  
Sanae Tamura
Keyword(s):  
Toroidal Field ◽  
Toroidal Field Ripple ◽  
Fast Ion

scholarly journals Effect of toroidal field ripple on plasma rotation in JET

2008 ◽  
Vol 48 (3) ◽  
pp. 035007 ◽  
Author(s):  
P.C. de Vries ◽  
A. Salmi ◽  
V. Parail ◽  
C. Giroud ◽  
Y. Andrew ◽  
...  
Keyword(s):  
Toroidal Field ◽  
Plasma Rotation ◽  
Toroidal Field Ripple
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