Energetic Particle Transport Prediction for CFETR Steady State Scenario Based on Critical Gradient Model  

作　　者：Yunpeng Zou V.S.Chan Wei Chen Yongqin Wang Yumei Hou Yiren Zhu 邹云鹏;陈锡熊;陈伟;王雍钦;侯玉梅;朱毅仁(Southwestern Institute of Physics,Chengdu 610041,China;General Atomics,San Diego,CA 92186,USA;School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]Southwestern Institute of Physics,Chengdu 610041,China [2]General Atomics,San Diego,CA 92186,USA [3]School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Physics Letters》2021年第4期71-74,共4页中国物理快报（英文版）

基　　金：the National Key R&D Program of China(Grant No.2019TFE03020000);the National Natural Science Foundation of China(Grant Nos.11875021,12005054,and 12005055);the Sichuan Science and Technology Program(Grant No.2020jqqn0070)。

摘　　要：The critical gradient mode(CGM) is employed to predict the energetic particle(EP) transport induced by the Alfven eigenmode(AE).To improve the model,the normalized critical density gradient is set as an inverse proportional function of energetic particle density;consequently,the threshold evolves during EP transport.Moreover,in order to consider the EP orbit loss mechanism in CGM,ORBIT code is employed to calculate the EP loss cone in phase space.With these improvements,the AE enhances EPs radial transport,pushing the particles into the loss cone.The combination of the two mechanisms raises the lost fraction to 6.6%,which is higher than the linear superposition of the two mechanisms.However,the loss is still far lower than that observed in current experiments.Avoiding significant overlap between the AE unstable region and the loss cone is a key factor in minimizing EP loss.

关 键 词：space. normalized INVERSE 

分 类 号：TL411[核科学技术—核技术及应用]