Inversion techniques to obtain local rotation velocity and ion temperature profiles for the x-ray crystal spectrometer on EAST  

作　　者：林子超 张洪明 王福地 Cheonho BAE 符佳 金仡飞 卢迪安 傅盛宇 李建康 吕波 Zichao LIN;Hongming ZHANG;Fudi WANG;Cheonho BAE;Jia FU;Yifei JIN;Di’an LU;Shengyu FU;Jiankang LI;Bo LYU(Institute of Plasma Physics,HFIPS,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China;Science Island Branch,Graduate School of University of Science and Technology of China,Hefei 230026,People’s Republic of China;School of Nuclear Science and Technology,University of South China,Hengyang 421001,People’s Republic of China)

机构地区：[1]Institute of Plasma Physics,HFIPS,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China [2]Science Island Branch,Graduate School of University of Science and Technology of China,Hefei 230026,People’s Republic of China [3]School of Nuclear Science and Technology,University of South China,Hengyang 421001,People’s Republic of China

出　　处：《Plasma Science and Technology》2023年第9期26-33,共8页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.12175278 and 12205072);the Comprehensive Research Facility for Fusion Technology Program of China(No.2018-000052-73-01-001228);Major Science and Technology Infrastructure Maintenance and Reconstruction Projects of the Chinese Academy of Sciences(2021),the University Synergy Innovation Program of Anhui Province(No.GXXT-2021-029);Anhui Provincial Key Research and Development Project(No.202104a06020021);Open Fund of the Magnetic Confinement Fusion Laboratory of Anhui Province(No.2021AMF01002);the National Magnetic Confinement Fusion Science Program of China(Nos.2019YFE03040000 and 2018YFE0303103).

摘　　要：Inversion techniques are conducted based on the tangential x-ray crystal spectroscopy(TXCS)geometry on EAST to obtain the local profiles of ion temperature(Ti)and toroidal rotation velocity(vt).Firstly,local emissivity profiles of the impurity argon are obtained using the asymmetrical Abel inversion.Then,the local vt and Ti profiles are calculated by considering the local emissivity profiles and the TXCS detailed geometry.In addition,how the changes in the vt profiles affect the accuracy in the Ti profiles is discussed in detail.It is also found that the lineintegrated Ti profiles are becoming less accurate with the increase in the radial gradient in the local vt profiles.Nonetheless,accurate Ti radial profiles are reconstructed after considering the effects of the emissivity and velocity,which are verified by comparing the inverted vt and Ti profiles with those local profile measurements from the Charge eXchange Recombination Spectroscopy(CXRS)on EAST.

关 键 词：plasma toroidal rotation ion temperature x-ray crystal spectroscopy Abel inversion 

分 类 号：TL631.24[核科学技术—核技术及应用]