B2.5-Eirene modeling of radial transport in the MAGPIE linear plasma device

L. W. Owen; J. F. Caneses; J. Canik; J. D. Lore; C. Corr; B. Blackwell; X. Bonnin; J. Rapp

doi:10.1088/1361-6595/aa6389

B2.5-Eirene modeling of radial transport in the MAGPIE linear plasma device

L. W. Owen, J. F. Caneses, J. Canik, J. D. Lore, C. Corr, B. Blackwell, X. Bonnin, J. Rapp

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

14 Scopus citations

Abstract

Radial transport in helicon heated hydrogen plasmas in the MAGnetized Plasma Interaction Experiment (MAGPIE) is studied with the B2.5-Eirene (SOLPS5.0) code. Radial distributions of plasma density, temperature and ambipolar potential are computed for several magnetic field configurations and compared to double Langmuir probe measurements. Evidence for an unmagnetized ion population is seen in the requirement for a convective pinch term in the continuity equation in order to fit the centrally peaked density profile data. The measured slightly hollow electron temperature profiles are reproduced with combinations of on-axis and edge heating which can be interpreted as helicon and Trivelpiece-Gould wave absorption, respectively. Pressure gradient driven radial charged particle diffusion is chosen to describe the diffusive particle flux since the hollowness of the temperature profiles assists the establishment of on-axis density peaking.

Original language	English
Article number	055005
Journal	Plasma Sources Science and Technology
Volume	26
Issue number	5
DOIs	https://doi.org/10.1088/1361-6595/aa6389
State	Published - Mar 23 2017

Funding

This work was sponsored by the Office of Fusion Energy Sciences of the US Department of Energy at the Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the US Department of Energy under Contract No. DE-AC05- 00OR22725.

Funders	Funder number
U.S. Department of Energy
Fusion Energy Sciences
Oak Ridge National Laboratory	DE-AC05- 00OR22725

Keywords

SOLPS
fluid model
helicon plasma
hydrogen discharge
linear plasma device
neutral particle transport
radial transport

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10.1088/1361-6595/aa6389

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title = "B2.5-Eirene modeling of radial transport in the MAGPIE linear plasma device",

abstract = "Radial transport in helicon heated hydrogen plasmas in the MAGnetized Plasma Interaction Experiment (MAGPIE) is studied with the B2.5-Eirene (SOLPS5.0) code. Radial distributions of plasma density, temperature and ambipolar potential are computed for several magnetic field configurations and compared to double Langmuir probe measurements. Evidence for an unmagnetized ion population is seen in the requirement for a convective pinch term in the continuity equation in order to fit the centrally peaked density profile data. The measured slightly hollow electron temperature profiles are reproduced with combinations of on-axis and edge heating which can be interpreted as helicon and Trivelpiece-Gould wave absorption, respectively. Pressure gradient driven radial charged particle diffusion is chosen to describe the diffusive particle flux since the hollowness of the temperature profiles assists the establishment of on-axis density peaking.",

keywords = "SOLPS, fluid model, helicon plasma, hydrogen discharge, linear plasma device, neutral particle transport, radial transport",

author = "Owen, {L. W.} and Caneses, {J. F.} and J. Canik and Lore, {J. D.} and C. Corr and B. Blackwell and X. Bonnin and J. Rapp",

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AU - Owen, L. W.

AU - Caneses, J. F.

AU - Canik, J.

AU - Lore, J. D.

AU - Corr, C.

AU - Blackwell, B.

AU - Bonnin, X.

AU - Rapp, J.

PY - 2017/3/23

Y1 - 2017/3/23

N2 - Radial transport in helicon heated hydrogen plasmas in the MAGnetized Plasma Interaction Experiment (MAGPIE) is studied with the B2.5-Eirene (SOLPS5.0) code. Radial distributions of plasma density, temperature and ambipolar potential are computed for several magnetic field configurations and compared to double Langmuir probe measurements. Evidence for an unmagnetized ion population is seen in the requirement for a convective pinch term in the continuity equation in order to fit the centrally peaked density profile data. The measured slightly hollow electron temperature profiles are reproduced with combinations of on-axis and edge heating which can be interpreted as helicon and Trivelpiece-Gould wave absorption, respectively. Pressure gradient driven radial charged particle diffusion is chosen to describe the diffusive particle flux since the hollowness of the temperature profiles assists the establishment of on-axis density peaking.

AB - Radial transport in helicon heated hydrogen plasmas in the MAGnetized Plasma Interaction Experiment (MAGPIE) is studied with the B2.5-Eirene (SOLPS5.0) code. Radial distributions of plasma density, temperature and ambipolar potential are computed for several magnetic field configurations and compared to double Langmuir probe measurements. Evidence for an unmagnetized ion population is seen in the requirement for a convective pinch term in the continuity equation in order to fit the centrally peaked density profile data. The measured slightly hollow electron temperature profiles are reproduced with combinations of on-axis and edge heating which can be interpreted as helicon and Trivelpiece-Gould wave absorption, respectively. Pressure gradient driven radial charged particle diffusion is chosen to describe the diffusive particle flux since the hollowness of the temperature profiles assists the establishment of on-axis density peaking.

KW - SOLPS

KW - fluid model

KW - helicon plasma

KW - hydrogen discharge

KW - linear plasma device

KW - neutral particle transport

KW - radial transport

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DO - 10.1088/1361-6595/aa6389

M3 - Article

AN - SCOPUS:85018966812

SN - 0963-0252

VL - 26

JO - Plasma Sources Science and Technology

JF - Plasma Sources Science and Technology

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M1 - 055005

ER -

B2.5-Eirene modeling of radial transport in the MAGPIE linear plasma device

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