The Material Plasma Exposure eXperiment MPEX: Pre-design, development and testing of source concept

J. Rapp; T. M. Biewer; T. Bigelow; J. B.O. Caughman; R. Duckworth; D. Giuliano; R. H. Goulding; D. L. Hillis; R. Howard; R. J. Ellis; T. Lessard; J. D. Lore; A. Lumsdaine; E. Martin; W. D. McGinnis; S. J. Meitner; L. W. Owen; H. Ray; G. Shaw; V. Varma

doi:10.1109/SOFE.2015.7482351

The Material Plasma Exposure eXperiment MPEX: Pre-design, development and testing of source concept

J. Rapp, T. M. Biewer, T. Bigelow, J. B.O. Caughman, R. Duckworth, D. Giuliano, R. H. Goulding, D. L. Hillis, R. Howard, R. J. Ellis, T. Lessard, J. D. Lore, A. Lumsdaine, E. Martin, W. D. McGinnis, S. J. Meitner, L. W. Owen, H. Ray, G. Shaw, V. Varma

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

The availability of future fusion devices such as a Fusion Nuclear Science Facility (FNSF) or DEMO greatly depends on long operating lifetimes of plasma facing components in their divertors. ORNL is designing the Material-Plasma Exposure eXperiment (MPEX), a superconducting magnet, steady-state device to address the plasma material interactions of fusion reactors. MPEX will utilize a new high-intensity plasma source concept based on RF technology. This source concept will allow the experiment to cover the entire expected plasma conditions in the divertor of a future fusion reactor. It will be able to study erosion and re-deposition for relevant geometries with relevant electric and magnetic fields in-front of the target. MPEX is being designed to allow for the exposure of a-priori neutron-irradiated samples. The target transfer cask has been designed to undock from the linear plasma generator such that it can be transferred to diagnostics stations for more detailed surface analysis. MPEX is being developed in a staged approach with successively increased capabilities. After the initial development step of the helicon source and ECH system the source concept is being tested in the Proto-MPEX device (100 kW helicon, 200 kW EBW, 30 kW ICRH). Proto-MPEX has achieved electron densities of more than 4×1019m-3 with a large diameter (13cm) helicon antenna at 100 kW power. First heating with microwaves resulted in a higher ionization represented by higher electron densities on axis, when compared to the helicon plasma only without microwave heating.

Original language	English
Title of host publication	2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479982646
DOIs	https://doi.org/10.1109/SOFE.2015.7482351
State	Published - May 31 2016
Event	26th IEEE Symposium on Fusion Engineering, SOFE 2015 - Austin, United States Duration: May 31 2015 → Jun 4 2015

Publication series

Name	Proceedings - Symposium on Fusion Engineering
Volume	2016-May

Conference

Conference	26th IEEE Symposium on Fusion Engineering, SOFE 2015
Country/Territory	United States
City	Austin
Period	05/31/15 → 06/4/15

Keywords

Power plants
R&D facilities
plasma-facing components
plasma-material interactions

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/SOFE.2015.7482351

Cite this

Rapp, J., Biewer, T. M., Bigelow, T., Caughman, J. B. O., Duckworth, R., Giuliano, D., Goulding, R. H., Hillis, D. L., Howard, R., Ellis, R. J., Lessard, T., Lore, J. D., Lumsdaine, A., Martin, E., McGinnis, W. D., Meitner, S. J., Owen, L. W., Ray, H., Shaw, G., & Varma, V. (2016). The Material Plasma Exposure eXperiment MPEX: Pre-design, development and testing of source concept. In 2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015 Article 7482351 (Proceedings - Symposium on Fusion Engineering; Vol. 2016-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SOFE.2015.7482351

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title = "The Material Plasma Exposure eXperiment MPEX: Pre-design, development and testing of source concept",

abstract = "The availability of future fusion devices such as a Fusion Nuclear Science Facility (FNSF) or DEMO greatly depends on long operating lifetimes of plasma facing components in their divertors. ORNL is designing the Material-Plasma Exposure eXperiment (MPEX), a superconducting magnet, steady-state device to address the plasma material interactions of fusion reactors. MPEX will utilize a new high-intensity plasma source concept based on RF technology. This source concept will allow the experiment to cover the entire expected plasma conditions in the divertor of a future fusion reactor. It will be able to study erosion and re-deposition for relevant geometries with relevant electric and magnetic fields in-front of the target. MPEX is being designed to allow for the exposure of a-priori neutron-irradiated samples. The target transfer cask has been designed to undock from the linear plasma generator such that it can be transferred to diagnostics stations for more detailed surface analysis. MPEX is being developed in a staged approach with successively increased capabilities. After the initial development step of the helicon source and ECH system the source concept is being tested in the Proto-MPEX device (100 kW helicon, 200 kW EBW, 30 kW ICRH). Proto-MPEX has achieved electron densities of more than 4×1019m-3 with a large diameter (13cm) helicon antenna at 100 kW power. First heating with microwaves resulted in a higher ionization represented by higher electron densities on axis, when compared to the helicon plasma only without microwave heating.",

keywords = "Power plants, R&D facilities, plasma-facing components, plasma-material interactions",

author = "J. Rapp and Biewer, {T. M.} and T. Bigelow and Caughman, {J. B.O.} and R. Duckworth and D. Giuliano and Goulding, {R. H.} and Hillis, {D. L.} and R. Howard and Ellis, {R. J.} and T. Lessard and Lore, {J. D.} and A. Lumsdaine and E. Martin and McGinnis, {W. D.} and Meitner, {S. J.} and Owen, {L. W.} and H. Ray and G. Shaw and V. Varma",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 26th IEEE Symposium on Fusion Engineering, SOFE 2015 ; Conference date: 31-05-2015 Through 04-06-2015",

year = "2016",

month = may,

day = "31",

doi = "10.1109/SOFE.2015.7482351",

language = "English",

series = "Proceedings - Symposium on Fusion Engineering",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015",

}

Rapp, J , Biewer, TM , Bigelow, T , Caughman, JBO , Duckworth, R , Giuliano, D , Goulding, RH, Hillis, DL, Howard, R, Ellis, RJ, Lessard, T, Lore, JD , Lumsdaine, A , Martin, E, McGinnis, WD, Meitner, SJ, Owen, LW, Ray, H, Shaw, G & Varma, V 2016, The Material Plasma Exposure eXperiment MPEX: Pre-design, development and testing of source concept. in 2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015., 7482351, Proceedings - Symposium on Fusion Engineering, vol. 2016-May, Institute of Electrical and Electronics Engineers Inc., 26th IEEE Symposium on Fusion Engineering, SOFE 2015, Austin, United States, 05/31/15. https://doi.org/10.1109/SOFE.2015.7482351

The Material Plasma Exposure eXperiment MPEX: Pre-design, development and testing of source concept. / Rapp, J.; Biewer, T. M.; Bigelow, T. et al.
2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015. Institute of Electrical and Electronics Engineers Inc., 2016. 7482351 (Proceedings - Symposium on Fusion Engineering; Vol. 2016-May).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Duckworth, R.

AU - Giuliano, D.

AU - Goulding, R. H.

AU - Hillis, D. L.

AU - Howard, R.

AU - Ellis, R. J.

AU - Lessard, T.

AU - Lore, J. D.

AU - Lumsdaine, A.

AU - Martin, E.

AU - McGinnis, W. D.

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N2 - The availability of future fusion devices such as a Fusion Nuclear Science Facility (FNSF) or DEMO greatly depends on long operating lifetimes of plasma facing components in their divertors. ORNL is designing the Material-Plasma Exposure eXperiment (MPEX), a superconducting magnet, steady-state device to address the plasma material interactions of fusion reactors. MPEX will utilize a new high-intensity plasma source concept based on RF technology. This source concept will allow the experiment to cover the entire expected plasma conditions in the divertor of a future fusion reactor. It will be able to study erosion and re-deposition for relevant geometries with relevant electric and magnetic fields in-front of the target. MPEX is being designed to allow for the exposure of a-priori neutron-irradiated samples. The target transfer cask has been designed to undock from the linear plasma generator such that it can be transferred to diagnostics stations for more detailed surface analysis. MPEX is being developed in a staged approach with successively increased capabilities. After the initial development step of the helicon source and ECH system the source concept is being tested in the Proto-MPEX device (100 kW helicon, 200 kW EBW, 30 kW ICRH). Proto-MPEX has achieved electron densities of more than 4×1019m-3 with a large diameter (13cm) helicon antenna at 100 kW power. First heating with microwaves resulted in a higher ionization represented by higher electron densities on axis, when compared to the helicon plasma only without microwave heating.

AB - The availability of future fusion devices such as a Fusion Nuclear Science Facility (FNSF) or DEMO greatly depends on long operating lifetimes of plasma facing components in their divertors. ORNL is designing the Material-Plasma Exposure eXperiment (MPEX), a superconducting magnet, steady-state device to address the plasma material interactions of fusion reactors. MPEX will utilize a new high-intensity plasma source concept based on RF technology. This source concept will allow the experiment to cover the entire expected plasma conditions in the divertor of a future fusion reactor. It will be able to study erosion and re-deposition for relevant geometries with relevant electric and magnetic fields in-front of the target. MPEX is being designed to allow for the exposure of a-priori neutron-irradiated samples. The target transfer cask has been designed to undock from the linear plasma generator such that it can be transferred to diagnostics stations for more detailed surface analysis. MPEX is being developed in a staged approach with successively increased capabilities. After the initial development step of the helicon source and ECH system the source concept is being tested in the Proto-MPEX device (100 kW helicon, 200 kW EBW, 30 kW ICRH). Proto-MPEX has achieved electron densities of more than 4×1019m-3 with a large diameter (13cm) helicon antenna at 100 kW power. First heating with microwaves resulted in a higher ionization represented by higher electron densities on axis, when compared to the helicon plasma only without microwave heating.

KW - Power plants

KW - R&D facilities

KW - plasma-facing components

KW - plasma-material interactions

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BT - 2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015

PB - Institute of Electrical and Electronics Engineers Inc.

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ER -

Rapp J , Biewer TM , Bigelow T , Caughman JBO , Duckworth R , Giuliano D et al. The Material Plasma Exposure eXperiment MPEX: Pre-design, development and testing of source concept. In 2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015. Institute of Electrical and Electronics Engineers Inc. 2016. 7482351. (Proceedings - Symposium on Fusion Engineering). doi: 10.1109/SOFE.2015.7482351

The Material Plasma Exposure eXperiment MPEX: Pre-design, development and testing of source concept

Abstract

Publication series

Conference

Keywords

UN SDGs

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