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

作　　者：夏志伟 李伟 杨青巍 卢杰 易萍 高金明 

机构地区：[1]Southwestern Institute of Physics

出　　处：《Plasma Science and Technology》2013年第2期101-105,共5页等离子体科学和技术（英文版）

摘　　要：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.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.

关 键 词：DEGAS code PLASMA NPA HL-2A ion temperature 

分 类 号：TL81[核科学技术—核技术及应用]