Control of plasma stored energy for burn control using DIII-D in-vessel coils
A new approach has been experimentally demonstrated to control the stored energy by applying a non-axisymmetric magnetic field using the DIII-D in-vessel coils to modify the energy confinement time. In future burning plasma experiments as well as magnetic fusion energy power plants, various concepts...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
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IOP Publishing
2018
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| Online Access: | http://hdl.handle.net/1721.1/113083 |
| _version_ | 1811091271299629056 |
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| author | Hawryluk, R. J. Eidietis, N. W. Grierson, B. A. Hyatt, A. W. Kolemen, E. Logan, N. C. Nazikian, R. Paz-Soldan, C. Solomon, W. M. Wolfe, Stephen M |
| author2 | Massachusetts Institute of Technology. Plasma Science and Fusion Center |
| author_facet | Massachusetts Institute of Technology. Plasma Science and Fusion Center Hawryluk, R. J. Eidietis, N. W. Grierson, B. A. Hyatt, A. W. Kolemen, E. Logan, N. C. Nazikian, R. Paz-Soldan, C. Solomon, W. M. Wolfe, Stephen M |
| author_sort | Hawryluk, R. J. |
| collection | MIT |
| description | A new approach has been experimentally demonstrated to control the stored energy by applying a non-axisymmetric magnetic field using the DIII-D in-vessel coils to modify the energy confinement time. In future burning plasma experiments as well as magnetic fusion energy power plants, various concepts have been proposed to control the fusion power. The fusion power in a power plant operating at high gain can be related to the plasma stored energy and hence, is a strong function of the energy confinement time. Thus, an actuator that modifies the confinement time can be used to adjust the fusion power. In relatively low collisionality DIII-D discharges, the application of non-axisymmetric magnetic fields results in a decrease in confinement time and density pumpout. Gas puffing was used to compensate the density pumpout in the pedestal while control of the stored energy was demonstrated by the application of non-axisymmetric fields. |
| first_indexed | 2024-09-23T14:59:30Z |
| format | Article |
| id | mit-1721.1/113083 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T14:59:30Z |
| publishDate | 2018 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1130832022-09-29T11:56:00Z Control of plasma stored energy for burn control using DIII-D in-vessel coils Hawryluk, R. J. Eidietis, N. W. Grierson, B. A. Hyatt, A. W. Kolemen, E. Logan, N. C. Nazikian, R. Paz-Soldan, C. Solomon, W. M. Wolfe, Stephen M Massachusetts Institute of Technology. Plasma Science and Fusion Center Wolfe, Stephen M A new approach has been experimentally demonstrated to control the stored energy by applying a non-axisymmetric magnetic field using the DIII-D in-vessel coils to modify the energy confinement time. In future burning plasma experiments as well as magnetic fusion energy power plants, various concepts have been proposed to control the fusion power. The fusion power in a power plant operating at high gain can be related to the plasma stored energy and hence, is a strong function of the energy confinement time. Thus, an actuator that modifies the confinement time can be used to adjust the fusion power. In relatively low collisionality DIII-D discharges, the application of non-axisymmetric magnetic fields results in a decrease in confinement time and density pumpout. Gas puffing was used to compensate the density pumpout in the pedestal while control of the stored energy was demonstrated by the application of non-axisymmetric fields. 2018-01-12T16:13:23Z 2018-01-12T16:13:23Z 2015-04 2014-10 2018-01-11T17:01:38Z Article http://purl.org/eprint/type/JournalArticle 0029-5515 1741-4326 http://hdl.handle.net/1721.1/113083 Hawryluk, R. J., et al. “Control of Plasma Stored Energy for Burn Control Using DIII-D in-Vessel Coils.” Nuclear Fusion, vol. 55, no. 5, May 2015, p. 053001. http://dx.doi.org/10.1088/0029-5515/55/5/053001 Nuclear Fusion Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing MIT Plasma Science & Fusion Center |
| spellingShingle | Hawryluk, R. J. Eidietis, N. W. Grierson, B. A. Hyatt, A. W. Kolemen, E. Logan, N. C. Nazikian, R. Paz-Soldan, C. Solomon, W. M. Wolfe, Stephen M Control of plasma stored energy for burn control using DIII-D in-vessel coils |
| title | Control of plasma stored energy for burn control using DIII-D in-vessel coils |
| title_full | Control of plasma stored energy for burn control using DIII-D in-vessel coils |
| title_fullStr | Control of plasma stored energy for burn control using DIII-D in-vessel coils |
| title_full_unstemmed | Control of plasma stored energy for burn control using DIII-D in-vessel coils |
| title_short | Control of plasma stored energy for burn control using DIII-D in-vessel coils |
| title_sort | control of plasma stored energy for burn control using diii d in vessel coils |
| url | http://hdl.handle.net/1721.1/113083 |
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