Trapped Particle Confinement Studies inl=2 Torsatrons for Additional Helical Coils, Radial Electric Field and Finite Beta Effect

1991 ◽  
Vol 60 (2) ◽  
pp. 494-511 ◽  
Author(s):  
Akira Kato ◽  
Yuji Nakamura ◽  
Masahiro Wakatani
Keyword(s):  
Electric Field ◽  
Radial Electric Field ◽  
Beta Effect ◽  
Helical Coils ◽  
Particle Confinement

Effects of edge biasing on blob dynamics and associated transport in the edge of the J-TEXT tokamak

2022 ◽  
Author(s):  
Wei Li ◽  
Yuhong Xu ◽  
Jun Cheng ◽  
Hai Liu ◽  
Zhipeng Chen ◽  
...  
Keyword(s):  
Electric Field ◽  
Large Scale ◽  
Turbulent Transport ◽  
Radial Electric Field ◽  
Plasma Confinement ◽  
Flow Shear ◽  
Theoretical Predictions ◽  
Outward Motion ◽  
Electrode Biasing ◽  
Particle Confinement

Abstract Effects of edge radial electric field Er and Er × B flow shear on edge turbulence and turbulent transport, in particular, on large-scale blobs and blobby transport have been investigated in the positive and negative biasing discharges in the J-TEXT tokamak. The results show that under certain conditions, the positive electrode biasing induces better plasma confinement than the negative biasing. Further studies reveal that in addition to flow shear effects on blob dynamics, the local radial electric field at the edge region plays a significant role in repulsion of the blobs and associated transport, leading to improvement of particle confinement when the outward motion of the blobs is blocked. The results are in accordance with theoretical predictions.

scholarly journals Investigation of turbulence rotation and radial electric field in the island divertor and plasma edge at W7-X

2019 ◽  
Vol 61 (5) ◽  
pp. 054003 ◽  
Author(s):  
A Krämer-Flecken ◽  
X Han ◽  
T Windisch ◽  
J Cosfeld ◽  
P Drews ◽  
...  
Keyword(s):  
Electric Field ◽  
Radial Electric Field ◽  
Plasma Edge

Features of radial electric field in impurity-seeded, detached plasma in a tokamak

2021 ◽  
Vol 28 (6) ◽  
pp. 062507
Author(s):  
I. Senichenkov ◽  
E. Kaveeva ◽  
V. Rozhansky ◽  
D. Coster
Keyword(s):  
Electric Field ◽  
Radial Electric Field

Influence of rotating resonant magnetic perturbation on the plasma radial electric field on TEXTOR

2012 ◽  
Vol 52 (7) ◽  
pp. 074013 ◽  
Author(s):  
T. Zhang ◽  
Y. Liang ◽  
Y. Sun ◽  
A. Krämer-Flecken ◽  
S. Soldatov ◽  
...  
Keyword(s):  
Electric Field ◽  
Radial Electric Field ◽  
Magnetic Perturbation

Comparison of the flows and radial electric field in the HSX stellarator to neoclassical calculations

2012 ◽  
Vol 55 (1) ◽  
pp. 014002 ◽  
Author(s):  
A Briesemeister ◽  
K Zhai ◽  
D T Anderson ◽  
F S B Anderson ◽  
J N Talmadge
Keyword(s):  
Electric Field ◽  
Radial Electric Field
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