Latest Results from Proto-MPEX and the Future Plans for MPEX

Rapp, Juergen; Lumsdaine, Arnold; Beers, Clyde J.; Biewer, Theodore M.; Bigelow, Tim S.; Caneses, Juan F.; Caughman, John B. O.; Goulding, Richard H.; Kafle, Nischal; Lau, Cornwall H.; Lindquist, Elizabeth; Piotrowicz, Pawel A.; Ray, Holly; Showers, Melissa A.

doi:10.1080/15361055.2019.1610315

Title: Latest Results from Proto-MPEX and the Future Plans for MPEX

Abstract

The Prototype Material Plasma Exposure eXperiment (Proto-MPEX) is being used to qualify the plasma source and heating systems for the Material Plasma Exposure eXperiment (MPEX). The MPEX will address important and urgent research needs on plasma material interactions for future fusion reactors. In MPEX, plasma-facing components (nonirradiated and a priori neutron irradiated) will be exposed to plasma conditions as they are expected in future fusion reactors. The MPEX, a steady-state device enabled by superconducting magnets, will be able to break into new ground by assessing plasma-facing materials and components at an ion fluence level in the range of 10³⁰ to 10³¹ m^-2. To achieve the relevant plasma conditions, high-density plasmas (>4 × 10¹⁹ m^-3) are produced with a high-power helicon source. The so-produced low-temperature helicon plasma is then additionally heated with waves in the ion cyclotron resonance frequency and electron cyclotron resonance frequency domains. Proto-MPEX has achieved all key parameters (source n_e, source T_e, source T_i, target T_e, target T_i, target ion flux, and target heat flux) within a factor of 2 of the design requirements of MPEX, albeit not simultaneously. These parameters were achieved with a total installed heating power of 330 kW, which is less than half ofmore »« less

Authors:

^[1];

^[2];

^[1];

^[2];

^[1];

^[2]; Piotrowicz, Pawel A. ^[3]; Ray, Holly ^[2]; Showers, Melissa A. ^[2]

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); University of Tennessee, Knoxville, TN (United States)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); University of Illinois, Urbana-Champaign, IL (United States)

Publication Date:: Wed Jun 05 00:00:00 EDT 2019

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1649621

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Fusion Science and Technology

Additional Journal Information:: Journal Volume: 75; Journal Issue: 7; Journal ID: ISSN 1536-1055

Publisher:: American Nuclear Society

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Plasma-facing material; linear device; plasma material interactions; fusion nuclear science

Citation Formats


                    Rapp, Juergen, Lumsdaine, Arnold, Beers, Clyde J., Biewer, Theodore M., Bigelow, Tim S., Caneses, Juan F., Caughman, John B. O., Goulding, Richard H., Kafle, Nischal, Lau, Cornwall H., Lindquist, Elizabeth, Piotrowicz, Pawel A., Ray, Holly, and Showers, Melissa A. Latest Results from Proto-MPEX and the Future Plans for MPEX.  United States: N. p., 2019. 
Web.  doi:10.1080/15361055.2019.1610315.

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                    Rapp, Juergen, Lumsdaine, Arnold, Beers, Clyde J., Biewer, Theodore M., Bigelow, Tim S., Caneses, Juan F., Caughman, John B. O., Goulding, Richard H., Kafle, Nischal, Lau, Cornwall H., Lindquist, Elizabeth, Piotrowicz, Pawel A., Ray, Holly, & Showers, Melissa A. Latest Results from Proto-MPEX and the Future Plans for MPEX.  United States.  https://doi.org/10.1080/15361055.2019.1610315

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                    Rapp, Juergen, Lumsdaine, Arnold, Beers, Clyde J., Biewer, Theodore M., Bigelow, Tim S., Caneses, Juan F., Caughman, John B. O., Goulding, Richard H., Kafle, Nischal, Lau, Cornwall H., Lindquist, Elizabeth, Piotrowicz, Pawel A., Ray, Holly, and Showers, Melissa A. Wed .  
"Latest Results from Proto-MPEX and the Future Plans for MPEX".  United States.  https://doi.org/10.1080/15361055.2019.1610315.  https://www.osti.gov/servlets/purl/1649621.

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@article{osti_1649621,

  title        = {Latest Results from Proto-MPEX and the Future Plans for MPEX},

  author       = {Rapp, Juergen and Lumsdaine, Arnold and Beers, Clyde J. and Biewer, Theodore M. and Bigelow, Tim S. and Caneses, Juan F. and Caughman, John B. O. and Goulding, Richard H. and Kafle, Nischal and Lau, Cornwall H. and Lindquist, Elizabeth and Piotrowicz, Pawel A. and Ray, Holly and Showers, Melissa A.},

  abstractNote = {The Prototype Material Plasma Exposure eXperiment (Proto-MPEX) is being used to qualify the plasma source and heating systems for the Material Plasma Exposure eXperiment (MPEX). The MPEX will address important and urgent research needs on plasma material interactions for future fusion reactors. In MPEX, plasma-facing components (nonirradiated and a priori neutron irradiated) will be exposed to plasma conditions as they are expected in future fusion reactors. The MPEX, a steady-state device enabled by superconducting magnets, will be able to break into new ground by assessing plasma-facing materials and components at an ion fluence level in the range of 1030 to 1031 m-2. To achieve the relevant plasma conditions, high-density plasmas (>4 × 1019 m-3) are produced with a high-power helicon source. The so-produced low-temperature helicon plasma is then additionally heated with waves in the ion cyclotron resonance frequency and electron cyclotron resonance frequency domains. Proto-MPEX has achieved all key parameters (source ne, source Te, source Ti, target Te, target Ti, target ion flux, and target heat flux) within a factor of 2 of the design requirements of MPEX, albeit not simultaneously. These parameters were achieved with a total installed heating power of 330 kW, which is less than half of the planned heating power in the MPEX (800 kW). An overview of the latest results from Proto-MPEX is given. These results are shown in relationship to the MPEX system goals. Remaining necessary research and development tasks are discussed. The MPEX is currently in the conceptual design phase. Lastly, the status of the design and an overview of the system requirements are presented.},

  doi          = {10.1080/15361055.2019.1610315},

  journal      = {Fusion Science and Technology},

  number       = 7,

  volume       = 75,

  place        = {United States},

  year         = {Wed Jun 05 00:00:00 EDT 2019},

  month        = {Wed Jun 05 00:00:00 EDT 2019}

}

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https://doi.org/10.1080/15361055.2019.1610315

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Cited by: 12 works

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Works referenced in this record:

Helicon plasma ion temperature measurements and observed ion cyclotron heating in proto-MPEX
journal, January 2018

Beers, C. J.; Goulding, R. H.; Isler, R. C.
Physics of Plasmas, Vol. 25, Issue 1
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Dual-pass upgrade to the Thomson scattering diagnostic on the Prototype-Material Plasma Exposure eXperiment (Proto-MPEX)
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Pre-conceptual design activities for the materials plasma exposure experiment
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Vacuum System and Modeling for the Materials Plasma Exposure Experiment
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Lumsdaine, Arnold; Meitner, Steve; Graves, Van
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Transport simulations of linear plasma generators with the B2.5-Eirene and EMC3-Eirene codes
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Operational domain of Proto-MPEX
journal, November 2018

Rapp, Juergen; Beers, Clyde; Biewer, Theodore
Fusion Engineering and Design, Vol. 136
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Neutron-Irradiated Samples as Test Materials for MPEX
journal, November 2015

Ellis, Ronald J.; Rapp, Juergen
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Progress in magnet design activities for the material plasma exposure experiment
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Duckworth, Robert; Lumsdaine, Arnold; Rapp, Juergen
Fusion Engineering and Design, Vol. 124
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Progress in the Development of a High Power Helicon Plasma Source for the Materials Plasma Exposure Experiment
journal, August 2017

Goulding, R. H.; Caughman, J. B. O.; Rapp, J.
Fusion Science and Technology, Vol. 72, Issue 4
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An electron Bernstein wave heating scheme for the Proto-MPEX linear device
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Physics of Plasmas, Vol. 25, Issue 7
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First results from the Thomson scattering diagnostic on proto-MPEX
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Biewer, T. M.; Meitner, S.; Rapp, J.
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Observations of electron heating during 28 GHz microwave power application in proto-MPEX
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Biewer, T. M.; Bigelow, T. S.; Caneses, J. F.
Physics of Plasmas, Vol. 25, Issue 2
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RF compensation of double Langmuir probes: modelling and experiment
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The Development of the Material Plasma Exposure Experiment
journal, December 2016

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IEEE Transactions on Plasma Science, Vol. 44, Issue 12
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Title: Latest Results from Proto-MPEX and the Future Plans for MPEX

Abstract

Citation Formats

Helicon plasma ion temperature measurements and observed ion cyclotron heating in proto-MPEX journal, January 2018

Dual-pass upgrade to the Thomson scattering diagnostic on the Prototype-Material Plasma Exposure eXperiment (Proto-MPEX) journal, October 2018

Pre-conceptual design activities for the materials plasma exposure experiment journal, November 2016

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

Vacuum System and Modeling for the Materials Plasma Exposure Experiment journal, August 2017

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

Operational domain of Proto-MPEX journal, November 2018

Neutron-Irradiated Samples as Test Materials for MPEX journal, November 2015

Progress in magnet design activities for the material plasma exposure experiment journal, November 2017

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

An electron Bernstein wave heating scheme for the Proto-MPEX linear device journal, July 2018

First results from the Thomson scattering diagnostic on proto-MPEX journal, August 2016

Observations of electron heating during 28 GHz microwave power application in proto-MPEX journal, February 2018

ELMO Bumpy Torus: An alternate concept to tokamaks and mirrors journal, April 1981

RF compensation of double Langmuir probes: modelling and experiment journal, May 2015

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

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

Helicon plasma ion temperature measurements and observed ion cyclotron heating in proto-MPEX
journal, January 2018

Dual-pass upgrade to the Thomson scattering diagnostic on the Prototype-Material Plasma Exposure eXperiment (Proto-MPEX)
journal, October 2018

Pre-conceptual design activities for the materials plasma exposure experiment
journal, November 2016

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

Vacuum System and Modeling for the Materials Plasma Exposure Experiment
journal, August 2017

Transport simulations of linear plasma generators with the B2.5-Eirene and EMC3-Eirene codes
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Operational domain of Proto-MPEX
journal, November 2018

Neutron-Irradiated Samples as Test Materials for MPEX
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journal, August 2017

An electron Bernstein wave heating scheme for the Proto-MPEX linear device
journal, July 2018

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journal, February 2018

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