Comparison of Gas Puff Imaging Data in NSTX with the DEGAS 2 Simulation

Cao, B. ; Stotler, D. P. ; Zweben, S. J. ; Bell, M. ; Diallo, A. ; Leblanc, B.

Princeton University. Plasma Physics Laboratory.

关键词: 70 Plasma Physics And Fusion Technology Nstx;    Nstx;   

RP-ID  :  PPPL-4828
RP-ID  :  DE-ACO2-09CH11466
RP-ID  :  1057053

美国|英语

来源: UNT Digital Library

【 摘 要 】

Gas-Puff-Imaging (GPI) is a two dimensional diagnostic which measures the edge Dα light emission from a neutral D2 gas puff nears the outer mid-plane of NSTX. DEGAS 2 is a 3-D Monte Carlo code used to model neutral transport and atomic physics in tokamak plasmas. In this paper we compare measurements of the Dα light emission obtained by GPI on NSTX with DEGAS 2 simulations of Dα light emission for specific experiments. Both the simulated spatial distribution and absolute intensity of the Dα light emission agree well with the experimental data obtained between ELMs in H-mode. __________________________________________________