The behaviour of the fast particle population during 18 keV hydrogen and 26 keV deuterium neutral beam injection in deuterium plasmas is investigated. Experiments reveal large fast ion losses. The experimental results are confirmed using different types of modelling: simulation using the NUBEAM module, solution of the Boltzmann kinetic equation and solution of the 3D fast ion tracking algorithm. The dynamics of the energetic particle redistribution and losses during sawtooth oscillation and toroidal Alfvén eigenmodes are studied. A method to decrease fast ion losses under the current conditions (0.4 T, 0.2 MA) is shown. The influence of the plasma parameters on the energetic ion confinement rate is investigated. Modelling for the Globus-M2 conditions (1 T, 0.5 MA) is performed.
重氢等离子体中，在18 keV氢和26 keV氘中性束注入期间，快粒子群体的行为被研究。实验揭示了大的快离子损失。实验结果通过不同类型的模拟得到证实：使用NUBEAM模块的模拟、玻尔兹曼动力学方程的求解以及三维快离子追踪算法的求解。在锯齿振荡和环形阿尔芬本征模期间，高能粒子再分布和损失的动力学被研究。展示了在电流条件下（0.4 T，0.2 MA）减少快离子损失的方法。等离子体参数对高能离子约束率的影响被研究。针对Globus-M2条件（1 T，0.5 MA）的模拟已执行。