Interaction between the core and the edge for ion cyclotron resonance heating based on artificial absorption plasma model  

作　　者：Zhuoqi LIU Jiahui ZHANG Kaibang WU Xinjun ZHANG Chengming QIN Feng WANG Zhengxiong WANG 刘卓琪;张珈珲;吴凯邦;张新军;秦成明;王丰;王正汹(School of Physics,Dalian University of Technology,Dalian 116024,People’s Republic of China;School of Aerospace Science and Technology,Xidian University,Xi’an 710071,People’s Republic of China;Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China)

机构地区：[1]School of Physics,Dalian University of Technology,Dalian 116024,People’s Republic of China [2]School of Aerospace Science and Technology,Xidian University,Xi’an 710071,People’s Republic of China [3]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China

出　　处：《Plasma Science and Technology》2024年第10期65-72,共8页等离子体科学和技术（英文版）

基　　金：supported by the National Key R&D Program of China(No.2022YFE03090000);the China Postdoctoral Science Foundation(No.2022M71490);National Natural Science Foundation of China(Nos.11925501 and 12275202);the Fundament Research Funds for the Central Universities(No.DUT22ZD215)。

摘　　要：In numerical simulations of the ion cyclotron range of frequencies(ICRF)wave heating scheme,core solvers usually focus on wave propagation and absorption mechanisms within the core plasma region.However,the realistic scrape-off layer(SOL)plasma is usually simplified,making it difficult to have deeper understanding of wave propagation and absorption within the SOL.In this work,we employ a cold plasma assumption and an artificial absorption mechanism based on the approach of reference(Zhang et al 2022 Nucl.Fusion 62076032),to study wave propagation and absorption in the realistic SOL plasma of the EAST.During the exponential decay of the total coupled power with respect to the toroidal mode numbers,several fluctuations are observed in the case of low collisional frequencies.The fluctuations may be caused by the cavity modes associated with specific toroidal mode numbers.Due to the presence of cut-off densities,the edge power losses and the total coupled power exhibit different behaviors before and after the cut-off layer is“open”.Furthermore,the simulation results obtained from the kinetic model in reference(Zhang et al 2022 Nucl.Fusion 62076032)is discussed.This suggests that both the core-edge combined model and the artificial mechanism are capable of simulating wave propagation and absorption.

关 键 词：ICRF EAST artificial mechanism collisional frequency 

分 类 号：TL631.24[核科学技术—核技术及应用]