Application of DEGAS for Ion Temperature Profile Reconstruction from a NPA Diagnostic on HL-2A

XIA Zhiwei (夏志伟); LI Wei (李伟); YANG Qingwei (杨青巍); LU Jie (卢杰); YI Ping (易萍); GAO Jinming (高金明)

doi:10.1088/1009-0630/15/2/04

Plasma Science and Technology > 2013 > 15(2): 101-105. > DOI: 10.1088/1009-0630/15/2/04

XIA Zhiwei (夏志伟), LI Wei (李伟), YANG Qingwei (杨青巍), LU Jie (卢杰), YI Ping (易萍), GAO Jinming (高金明). Application of DEGAS for Ion Temperature Profile Reconstruction from a NPA Diagnostic on HL-2A[J]. Plasma Science and Technology, 2013, 15(2): 101-105. DOI: 10.1088/1009-0630/15/2/04

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Application of DEGAS for Ion Temperature Profile Reconstruction from a NPA Diagnostic on HL-2A

Southwestern Institute of Physics, Chengdu 610041, China

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Received Date: January 24, 2012

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Abstract

Abstract

On HL-2A, the ion temperature profile can be roughly estimated by analyzing the energy spectrum of the neutral particles that escape from core plasma through 11 different spatial channels. However, this profile deviates from the real radial distribution because of the averaging and attenuation effects. The DEGAS code is used to estimate these effects and reconstruct a more reasonable ion temperature profile by simulating these neutral spectra and making them conform to the measurements. In this paper, critical parameters that affect the escaped neutral spectra are enumerated, and an example of a reconstruction of the ion temperature profile is presented based on experimental data.
- DEGAS code,
- plasma,
- NPA,
- HL-2A,
- ion temperature

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