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Title: Collisionless high energy particle losses in optimized stellarators calculated in real-space coordinates

An approach for the direct computation of collisionless losses of high energy charged particles is developed for stellarator magnetic fields given in real space coordinates. With this approach, the corresponding computations can be performed for magnetic fields with three-dimensional inhomogeneities in the presence of stochastic regions as well as magnetic islands. A code, which is based on this approach, is applied to various stellarator configurations. It is found that the life time of fast particles obtained in real-space coordinates can be smaller than that obtained in magnetic coordinates.
Authors:
;  [1] ;  [2] ;  [3]
  1. Institute of Plasma Physics, National Science Center Kharkov Institute of Physics and Technology, Akademicheskaya str. 1, 61108 Kharkov (Ukraine)
  2. (Austria)
  3. Institut für Theoretische Physik—Computational Physics, Technische Universität Graz, Fusion@ÖAW, Petersgasse 16, A-8010 Graz (Austria)
Publication Date:
OSTI Identifier:
22304272
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 6; Other Information: (c) 2014 EURATOM; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CALCULATION METHODS; CHARGED PARTICLES; MAGNETIC FIELDS; MAGNETIC ISLANDS; STELLARATORS; STOCHASTIC PROCESSES