Comparison of gas puff imaging data in NSTX with degas 2 simulations

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

doi:10.13182/FST13-A17044

Comparison of gas puff imaging data in NSTX with degas 2 simulations

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

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Gas puff imaging is a two-dimensional diagnostic that measures the edge D_α light emission from a neutral D₂ gas puff near the outer midplane of the National Spherical Torus Experiment (NSTX). DEGAS 2 is a threedimensional Monte Carlo code used to model neutral transport and plasma-neutral interactions in fusion plasmas. In this paper, we compare the measured and modeled D_α light emission for specific NSTX experiments. Both the simulated spatial distribution and the radiance of the D_α light emission agree well with the experimental data obtained during time periods between edge-localized modes (ELMs) in ELMy H-modes.

Original language	English (US)
Pages (from-to)	29-38
Number of pages	10
Journal	Fusion Science and Technology
Volume	64
Issue number	1
DOIs	https://doi.org/10.13182/FST13-A17044
State	Published - Jul 2013

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Nuclear and High Energy Physics
Nuclear Energy and Engineering
General Materials Science
Mechanical Engineering

Keywords

Neutral transport simulation
NSTX
Plasma diagnostics

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10.13182/FST13-A17044

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abstract = "Gas puff imaging is a two-dimensional diagnostic that measures the edge Dα light emission from a neutral D2 gas puff near the outer midplane of the National Spherical Torus Experiment (NSTX). DEGAS 2 is a threedimensional 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 specific NSTX experiments. Both the simulated spatial distribution and the radiance of the Dα light emission agree well with the experimental data obtained during time periods between edge-localized modes (ELMs) in ELMy H-modes.",

keywords = "Neutral transport simulation, NSTX, Plasma diagnostics",

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year = "2013",

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doi = "10.13182/FST13-A17044",

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AU - Cao, B.

AU - Stotler, D. P.

AU - Zweben, S. J.

AU - Bell, M.

AU - Diallo, A.

AU - LeBlanc, B.

PY - 2013/7

Y1 - 2013/7

N2 - Gas puff imaging is a two-dimensional diagnostic that measures the edge Dα light emission from a neutral D2 gas puff near the outer midplane of the National Spherical Torus Experiment (NSTX). DEGAS 2 is a threedimensional 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 specific NSTX experiments. Both the simulated spatial distribution and the radiance of the Dα light emission agree well with the experimental data obtained during time periods between edge-localized modes (ELMs) in ELMy H-modes.

AB - Gas puff imaging is a two-dimensional diagnostic that measures the edge Dα light emission from a neutral D2 gas puff near the outer midplane of the National Spherical Torus Experiment (NSTX). DEGAS 2 is a threedimensional 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 specific NSTX experiments. Both the simulated spatial distribution and the radiance of the Dα light emission agree well with the experimental data obtained during time periods between edge-localized modes (ELMs) in ELMy H-modes.

KW - Neutral transport simulation

KW - NSTX

KW - Plasma diagnostics

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JO - Fusion Science and Technology

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Comparison of gas puff imaging data in NSTX with degas 2 simulations

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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