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Title: Helicon normal modes in Proto-MPEX

Abstract

Here, the Proto-MPEX helicon source has been operating in a high electron density 'helicon-mode'. Establishing plasma densities and magnetic field strengths under the antenna that allow for the formation of normal modes of the fast-wave are believed to be responsible for the 'helicon-mode'. A 2D finite-element full-wave model of the helicon antenna on Proto-MPEX is used to identify the fast-wave normal modes responsible for the steady-state electron density profile produced by the source. We also show through the simulation that in the regions of operation in which core power deposition is maximum the slow-wave does not deposit significant power besides directly under the antenna. In the case of a simulation where a normal mode is not excited significant edge power is deposited in the mirror region.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2];  [3]
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  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Illinois Urbana-Champaign, Urbana, IL (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of Illinois Urbana-Champaign, Urbana, IL (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1456809
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Plasma Sources Science and Technology
Additional Journal Information:
Journal Volume: 27; Journal Issue: 5; Journal ID: ISSN 1361-6595
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; MPEX; plasma source; plasma waves; helicon source; full wave simulation; deuterium

Citation Formats

Piotrowicz, Pawel A., Caneses, Juan F., Green, David L., Goulding, Richard Howell, Lau, Cornwall H., Caughman, John B. O., Rapp, Juergen, and Ruzic, David N. Helicon normal modes in Proto-MPEX. United States: N. p., 2018. Web. doi:10.1088/1361-6595/aabd62.
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Piotrowicz, Pawel A., Caneses, Juan F., Green, David L., Goulding, Richard Howell, Lau, Cornwall H., Caughman, John B. O., Rapp, Juergen, & Ruzic, David N. Helicon normal modes in Proto-MPEX. United States. https://doi.org/10.1088/1361-6595/aabd62
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Piotrowicz, Pawel A., Caneses, Juan F., Green, David L., Goulding, Richard Howell, Lau, Cornwall H., Caughman, John B. O., Rapp, Juergen, and Ruzic, David N. Tue . "Helicon normal modes in Proto-MPEX". United States. https://doi.org/10.1088/1361-6595/aabd62. https://www.osti.gov/servlets/purl/1456809.
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@article{osti_1456809,
title = {Helicon normal modes in Proto-MPEX},
author = {Piotrowicz, Pawel A. and Caneses, Juan F. and Green, David L. and Goulding, Richard Howell and Lau, Cornwall H. and Caughman, John B. O. and Rapp, Juergen and Ruzic, David N.},
abstractNote = {Here, the Proto-MPEX helicon source has been operating in a high electron density 'helicon-mode'. Establishing plasma densities and magnetic field strengths under the antenna that allow for the formation of normal modes of the fast-wave are believed to be responsible for the 'helicon-mode'. A 2D finite-element full-wave model of the helicon antenna on Proto-MPEX is used to identify the fast-wave normal modes responsible for the steady-state electron density profile produced by the source. We also show through the simulation that in the regions of operation in which core power deposition is maximum the slow-wave does not deposit significant power besides directly under the antenna. In the case of a simulation where a normal mode is not excited significant edge power is deposited in the mirror region.},
doi = {10.1088/1361-6595/aabd62},
journal = {Plasma Sources Science and Technology},
number = 5,
volume = 27,
place = {United States},
year = {Tue May 22 00:00:00 EDT 2018},
month = {Tue May 22 00:00:00 EDT 2018}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1088/1361-6595/aabd62
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Citation Metrics:
Cited by: 13 works
Citation information provided by
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Figures / Tables:

FIG. 1 FIG. 1: a) On-axis magnetic field strength in Proto-MPEX for IH = 160 A. b) Flux line mapping and two dimensional schematic of Proto-MPEX with the locations of the helicon antenna, gas fuelling, and locations of electron density measurements made with double Langmuir probes are shown.
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Works referenced in this record:

Plasma production using a standing helicon wave
journal, December 1970

Very efficient plasma generation by whistler waves near the lower hybrid frequency
journal, October 1984

The Development of Plasma-Material Interaction Facilities for the Future of Fusion Technology
journal, August 2013

  • Rapp, J.; Biewer, T. M.; Canik, J.
  • Fusion Science and Technology, Vol. 64, Issue 2
  • DOI: 10.13182/FST12-565

The Development of the Material Plasma Exposure Experiment
journal, December 2016

  • Rapp, Juergen; Biewer, T. M.; Bigelow, T. S.
  • IEEE Transactions on Plasma Science, Vol. 44, Issue 12
  • DOI: 10.1109/TPS.2016.2628326

Developing the science and technology for the Material Plasma Exposure eXperiment
journal, July 2017

Transport simulations of linear plasma generators with the B2.5-Eirene and EMC3-Eirene codes
journal, August 2015

Collisional damping of helicon waves in a high density hydrogen linear plasma device
journal, September 2016

Plasma source development for fusion-relevant material testing
journal, May 2017

  • Caughman, John B. O.; Goulding, Richard H.; Biewer, Theodore M.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 35, Issue 3
  • DOI: 10.1116/1.4982664

Progress in the Development of a High Power Helicon Plasma Source for the Materials Plasma Exposure Experiment
journal, August 2017

Contribution of slow waves on production of high-density plasmas by m=0 helicon waves
journal, December 1999

  • Sakawa, Y.; Takino, T.; Shoji, T.
  • Physics of Plasmas, Vol. 6, Issue 12
  • DOI: 10.1063/1.873763

Low frequency electrostatic instability in a helicon plasma
journal, October 2001

  • Light, Max; Chen, Francis F.; Colestock, P. L.
  • Physics of Plasmas, Vol. 8, Issue 10
  • DOI: 10.1063/1.1403415

High density hydrogen helicon plasma in a non-uniform magnetic field
journal, June 2004

  • Mori, Yoshitaka; Nakashima, Hieki; Baity, Frederick W.
  • Plasma Sources Science and Technology, Vol. 13, Issue 3
  • DOI: 10.1088/0963-0252/13/3/009

Focusing magnetic field contribution for helicon plasma on Mini-RFTF
journal, May 2006

Plasma production in a toroidal heliac by helicon waves
journal, November 1991

Hot-Electron Production and Wave Structure in a Helicon Plasma Source
journal, July 1997

Evidence for Trivelpiece-Gould Modes in a Helicon Discharge
journal, March 2002

Radially Localized Helicon Modes in Nonuniform Plasma
journal, April 2000

Upper Limit to Landau Damping in Helicon Discharges
journal, March 1999

rf Absorption and Ion Heating in Helicon Sources
journal, April 2002

Helicon mode formation and radio frequency power deposition in a helicon-produced plasma
journal, July 2008

Volume and surface rf power absorption in a helicon plasma source
journal, August 1996

  • Shamrai, Konstantin P.; Taranov, Vladimir B.
  • Plasma Sources Science and Technology, Vol. 5, Issue 3
  • DOI: 10.1088/0963-0252/5/3/015

The role of Trivelpiece–Gould waves in antenna coupling to helicon waves
journal, July 2000

Central peaking of magnetized gas discharges
journal, May 2013

  • Chen, Francis F.; Curreli, Davide
  • Physics of Plasmas, Vol. 20, Issue 5
  • DOI: 10.1063/1.4801740

Equilibrium theory of cylindrical discharges with special application to helicons
journal, November 2011

  • Curreli, Davide; Chen, Francis F.
  • Physics of Plasmas, Vol. 18, Issue 11
  • DOI: 10.1063/1.3656941

Stable modes and abrupt density jumps in a helicon plasma source
journal, November 1998

Comparing experiments with modeling for light ion helicon plasma sources
journal, December 2002

  • Carter, M. D.; Baity, F. W.; Barber, G. C.
  • Physics of Plasmas, Vol. 9, Issue 12
  • DOI: 10.1063/1.1519539

Resonance wave discharge and collisional energy absorption in helicon plasma source
journal, November 1994

Intense on-axis plasma production and associated relaxation oscillations in a large volume helicon source
journal, September 1999

  • Degeling, A. W.; Sheridan, T. E.; Boswell, R. W.
  • Physics of Plasmas, Vol. 6, Issue 9
  • DOI: 10.1063/1.873624

Model for relaxation oscillations in a helicon discharge
journal, May 1999

  • Degeling, A. W.; Sheridan, T. E.; Boswell, R. W.
  • Physics of Plasmas, Vol. 6, Issue 5
  • DOI: 10.1063/1.873419

Generalized theory of helicon waves. II. Excitation and absorption
journal, May 1998

  • Arnush, Donald; Chen, Francis F.
  • Physics of Plasmas, Vol. 5, Issue 5
  • DOI: 10.1063/1.872782

Eigenmode dispersion relations in radially inhomogeneous helicon plasmas
journal, June 2009

Modeling of profile effects for inductive helicon plasma sources
journal, January 1996

  • Mouzouris, Y.; Scharer, J. E.
  • IEEE Transactions on Plasma Science, Vol. 24, Issue 1
  • DOI: 10.1109/27.491753

Helicon antenna radiation patterns in a high-density hydrogen linear plasma device
journal, November 2017

  • Caneses, J. F.; Blackwell, B. D.; Piotrowicz, P.
  • Physics of Plasmas, Vol. 24, Issue 11
  • DOI: 10.1063/1.5000848
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    Works referencing / citing this record:

    Radial transport modeling of high density deuterium plasmas in proto-MPEX with the B2.5-Eirene code
    journal, April 2019

    • Rapp, J.; Owen, L. W.; Canik, J.
    • Physics of Plasmas, Vol. 26, Issue 4
    • DOI: 10.1063/1.5049808

    Radio-frequency wave interactions with a plasma sheath in oblique-angle magnetic fields using a sheath impedance model
    journal, February 2019

    Computational investigation of ion cyclotron heating on Proto-MPEX
    journal, March 2019

    • Piotrowicz, P. A.; Goulding, R. H.; Caneses, J. F.
    • Physics of Plasmas, Vol. 26, Issue 3
    • DOI: 10.1063/1.5065784

    Evidence of electron heating at different radial locations on Proto-MPEX
    journal, March 2019

    • Lau, C.; Caneses, J. F.; Bigelow, T. S.
    • Physics of Plasmas, Vol. 26, Issue 3
    • DOI: 10.1063/1.5083814
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      Figures / Tables found in this record:

      FIG. 1 (p. 3)figure
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      FIG. 3 (p. 4)figure
      FIG. 4 (p. 5)figure
      FIG. 5 (p. 6)figure
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      FIG. 7 (p. 7)figure
      FIG. 8 (p. 7)figure
      FIG. 10 (p. 8)figure
      FIG. 9 (p. 8)figure
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