Extension of the energetic particle transport kick model in TRANSP to multiple fast ion species

Nuclear Fushion

article

M. Podest๠ M. Gorelenkova¹  A.A. Teplukhina¹  P.J. Bonofiglo¹  R. Dumont²  D. Keeling³  F.M. Poli¹  R.B. White¹ 

[1] Princeton Plasma Physics Laboratory, Princeton NJ 08543;CEA;CCFE, Culham Science Centre

关键词: Alfvenic instabilities;    JET tokamak;    TRANSP;    energetic particle transport;    kickmodel;   

DOI  :  10.1088/1741-4326/ac99ee

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

Alfvénic instabilities (AEs) are well known to cause enhanced transport of energetic particles (EPs) in fusion devices. Most studies until now have focused on characterizing and understanding AE stability in single-species plasmas heated by neutral beams (NB), where deuterium is typically used as both main plasma species and NB fuel. As the fusion community moves toward fusion reactors that target burning plasma conditions, such as ITER, the single-species picture breaks down. Burning plasmas, which will use a mix of deuterium and tritium (DT) as main fuel, also feature the presence of several supra-thermal fusion products such as alpha particles, protons, helium isotopes and high-energy tritium ions. This work presents the extension of the EP transportkick modelimplemented in the TRANSP time-dependent tokamak transport code to study the combined effect of multiple EP species on AE stability and, in turn, the response of different EP species to plasma instabilities in terms of their redistribution and losses. Further validation of the enhanced model is planned based on experimental results expected from the JET DT campaign scheduled for 2021, in preparation for ITER plasmas and beyond.

【 授权许可】

Unknown