Nuclear Techniques ›› 2016, Vol. 39 ›› Issue (4): 40602-040602.doi: 10.11889/j.0253-3219.2016.hjs.39.040602

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Cross-section effect on charge exchange recombination spectroscopy measurement with the EAST tokamak

FENG Shuangyuan1,2, LI Yingying2, YU Yi1, YIN Xianghui1,2, FU Jia2, LYU Bo2, WANG Huajie1,2, CHEN Jun1,2, HU Ruijie1,2, YE Minyou1,2   

  1. 1 School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China;
    2 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
  • Received:2015-11-27 Revised:2015-12-22 Online:2016-04-10 Published:2016-04-08
  • Supported by:

    Supported by National Natural Science Foundation of China(No.11405212, No.11175208), National Magnetic Confinement Fusion Science Program of China(No.2015GB103000, No.2012GB101001), Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology(No.2014FXCX003)

Abstract:

Background: Charge-exchange spectroscopy is a powerful diagnostic tool for determining ion temperatures and rotational velocities in tokamak plasmas. This technique depends on detailed understanding of the atomic physics processes that affect the measured apparent velocities with respect to the true ion rotational velocities. Purpose: The study aims to give correction to Charge eXchange Recombination Spectroscopy(CXRS) measurement with Experimental Advanced Superconducting Tokamak(EAST) because of energy dependence of the charge-exchange cross-sections. Methods: Kinetic theory and numerical approximation of cross-section effects are usually used to evaluate the associated corrections. On EAST, kinetic theory and numerical approximation of cross-section effects will be applied to calculate the corrections. Results: A direct comparison between kinetic theory and numerical approximation of cross-section effects will be given. And kinetic theory is applied to give correction to the CXRS measure data in 2015. Conclusion: The correction results showed that two ways are feasible and charge-exchange cross-section effect has more influence on rotational velocity. It gives a possible way for the CXRS data correction because of charge-exchange cross-section effect.

Key words: Tokamak, CXRS, Ion temperature, Rotation velocity, Cross-section effect

CLC Number: 

  • TL65+1