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Title: Effect of the plasma shapes on intrinsic rotation due to collisionless ion orbit loss in the tokamak edge plasmas

Distribution of the intrinsic rotation due to collisionless ion orbit loss near the tokamak edge region is studied by using an analytical model based on ion guiding center orbit approximation. A peak of the averaged ion orbit loss momentum fraction is found very near inside the separatrix region in a double null divertor configuration but is not found inside the last closed flux surface region in an outer limiter configuration. For the double null divertor configuration, the intrinsic rotation due to ion orbit loss depends on the plasma shape. With the increase in elongation and triangularity, the peak of the averaged ion orbit loss momentum fraction increases and it moves inward for the lower plasma current.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [2]
  1. Institute of Plasma Physics, Chinese Academy of Sciences, Heifei 230031 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22304089
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APPROXIMATIONS; CONFIGURATION; DISTRIBUTION; DIVERTORS; ELECTRIC CURRENTS; ELONGATION; LIMITERS; LOSSES; MAGNETIC SURFACES; PEAKS; PLASMA; SHAPE; TOKAMAK DEVICES