CFETR阿尔法粒子波纹损失的数值模拟

摘要

使用导心轨道程序ORBIT，在平衡程序EFIT给出的中国聚变工程实验堆(CFETR)平衡位型下，结合不同的阿尔法(α)粒子分布模型，计算了氘氚聚变产生的α粒子波纹损失情况。计算结果表明：在不考虑锯齿模不稳定性的α粒子分布下，ITER-like和super-X位型下的α粒子波纹损失份额为0.1%，snowflake位型在0.4%，反磁剪切位形在0.6%；在较平缓的α粒子分布下，损失份额增大，损失的高能量α粒子有局域性。%The fusion-produced alpha particle ripple loss on Chinese fusion engineering test reactor (CFETR) was simulated with orbit following Monte Carlo code ORBIT, under the plasma equilibrium flux surfaces generated by the equilibrium code EFIT and different alpha model source profile. The prediction of the pre-sawtooth peaked profile particle loss for the steady state phases was 0.1% to 0.4% under the normal shear configuration. Simulation of reversed magnetic shear case predicted that the alpha particle loss was near 0.6%. The ripple loss fraction was very localized and predicted to increase several times with flat source profile or sawtooth-broadened profile.