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

Comparison of Gas Puff Imaging Data in NSTX with the DEGAS 2 Simulation Gas-Pu -Imaging (GPI) is a two dimensional diagnostic which measures the edge Dα light emission from a neutral Dα gas puff near the outer mid- plane of the National Spherical Torus Experiment (NSTX). DEGAS 2 is a 3-D Monte Carlo code used to model neutral transport and plasma-neutral interactions in fusion plasmas. In this paper, we compare the measured and modeled Dα light emission for speci c NSTX experiments. Both the simulated spatial distribution and radiance of the Dα light emission agree well with the experimental data obtained between Edge Localized Modes (ELMs) in ELMy H-modes.
Authors:
Publication Date:
OSTI Identifier:1074356
Report Number(s):PPPL-4865
DOE Contract Number:DE-ACO2-09CH11466
Resource Type:Technical Report
Data Type:
Research Org:Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Org:USDOE Office of Science (SC)
Country of Publication:United States
Language:English
Subject: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY Computer Simulation, Diagnostics, Edge Plasma