A model for the fast evaluation of prompt losses of energetic ions in stellarators. (14th October 2021)

• Record Type: Journal Article
• Authors: Velasco, J.L.; Calvo, I.; Mulas, S.; Sánchez, E.; Parra, F.I.; Cappa, Á.; the W7-X Team,
• Is Part Of: Nuclear fusion. Volume 61:Number 11(2021)
• Publication Date: 2021-10-14
• Subjects: stellarators -- energetic particles -- neoclassical theory -- optimization; Nuclear fusion -- Periodicals; 621.48405
• DOI: 10.1088/1741-4326/ac2994
• Languages: English
• ISSNs: 0029-5515

Abstract

Abstract: A good understanding of the confinement of energetic ions in non-axisymmetric magnetic fields is key for the design of reactors based on the stellarator concept. In this work, we develop a model that, based on the radially-local bounce-averaged drift-kinetic equation, classifies orbits and succeeds in predicting configuration-dependent aspects of the prompt losses of energetic ions in stellarators. Such a model could in turn be employed in the optimization stage of the design of new devices.