Estimation of China Fusion Engineering Test Reactor performance and burning fraction in different pellet fueling scenarios by a multi-species radial transport model  

作　　者：Weisheng LIN Xiaogang WANG Xueqiao XU Defeng KONG Yumin WANG Jiale CHEN Zhanhui WANG Chijie XIAO 林伟胜;王晓钢;徐学桥;孔德峰;王嵎民;陈佳乐;王占辉;肖池阶(State Key Lab of Nuclear Physics and Technology and School of Physics,Peking University,Beijing 100871,People’s Republic of China;Department of Physics,Institute of Space Environment and Matter Science,Harbin Institute of Technology,Harbin 150001,People’s Republic of China;Lawrence Livermore National Laboratory,Livermore,California 94551,United States of America;Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China;Southwestern Institute of Physics,Chengdu 610041,People’s Republic of China)

机构地区：[1]State Key Lab of Nuclear Physics and Technology and School of Physics,Peking University,Beijing 100871,People’s Republic of China [2]Department of Physics,Institute of Space Environment and Matter Science,Harbin Institute of Technology,Harbin 150001,People’s Republic of China [3]Lawrence Livermore National Laboratory,Livermore,California 94551,United States of America [4]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China [5]Southwestern Institute of Physics,Chengdu 610041,People’s Republic of China

出　　处：《Plasma Science and Technology》2022年第5期102-111,共10页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.11975087 and 41674165);the National Key Research and Development Program of China(Nos.2017YFE0300501 and 2018YFE030310)。

摘　　要：Tritium self-sufficiency in future deuterium–tritium fusion reactors is a crucial challenge.As an engineering test reactor,the China Fusion Engineering Test Reactor requires a burning fraction of 3%for the goal to test the accessibility to the future fusion plant.To self-consistently simulate burning plasmas with profile changes in pellet injection scenarios and to estimate the corresponding burning fraction,a one-dimensional multi-species radial transport model is developed in the BOUT++framework.Several pellet-fueling scenarios are then tested in the model.The results show that the increased fueling depth improves the burning fraction by particle confinement improvement and fusion power increase.Nevertheless,by increasing the depth,the pellet cooling-down may significantly lower the temperature in the core region.Taking the density perturbation into consideration,the reasonable parameters of the fueling scenario in these simulations are estimated as pellet radius r_(p)=3 mm,injection rate=4 Hz,and pellet injection velocity=1000–2000 m s^(-1) without drift or 450 m s^(-1) with high-field-side drift.

关 键 词：CFETR tritium burning fraction fueling scenarios 

分 类 号：TL641[核科学技术—核技术及应用]