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Post RF. The Kinetic Stabilizer Axisymmetric Tandem Mirror: A Review of Approaches to Its Implementation. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst07-a1328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Richard F. Post
- Lawrence Livermore National Laboratory, Livermore California 94550
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2
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Bagryansky PA, Shalashov AG, Gospodchikov ED, Lizunov AA, Maximov VV, Prikhodko VV, Soldatkina EI, Solomakhin AL, Yakovlev DV. Threefold Increase of the Bulk Electron Temperature of Plasma Discharges in a Magnetic Mirror Device. PHYSICAL REVIEW LETTERS 2015; 114:205001. [PMID: 26047233 DOI: 10.1103/physrevlett.114.205001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Indexed: 06/04/2023]
Abstract
This Letter describes plasma discharges with a high temperature of bulk electrons in the axially symmetric high-mirror-ratio (R=35) open magnetic system gas dynamic trap (GDT) in the Budker Institute (Novosibirsk). According to Thomson scattering measurements, the on-axis electron temperature averaged over a number of sequential shots is 660±50 eV with the plasma density being 0.7×10^{19} m^{-3}; in few shots, electron temperature exceeds 900 eV. This corresponds to at least a threefold increase with respect to previous experiments both at GDT and at other comparable machines, thus, demonstrating the highest quasistationary (about 1 ms) electron temperature achieved in open traps. The breakthrough is made possible by application of a new 0.7 MW/54.5 GHz electron cyclotron resonance heating system in addition to standard 5 MW heating by neutral beams, and application of a radial electric field to mitigate the flute instability.
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Affiliation(s)
- P A Bagryansky
- Budker Institute of Nuclear Physics, 11 Lavrentieva ave., 630090 Novosibirsk, Russia
- Novosibirsk State University, 2 Pirogova str., 630090 Novosibirsk, Russia
| | - A G Shalashov
- Budker Institute of Nuclear Physics, 11 Lavrentieva ave., 630090 Novosibirsk, Russia
- Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanova str., 603950 Nizhny Novgorod, Russia
- Lobachevsky State University of Nizhny Novgorod, 23 Gagarina ave., 603950 N. Novgorod, Russia
| | - E D Gospodchikov
- Budker Institute of Nuclear Physics, 11 Lavrentieva ave., 630090 Novosibirsk, Russia
- Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanova str., 603950 Nizhny Novgorod, Russia
- Lobachevsky State University of Nizhny Novgorod, 23 Gagarina ave., 603950 N. Novgorod, Russia
| | - A A Lizunov
- Budker Institute of Nuclear Physics, 11 Lavrentieva ave., 630090 Novosibirsk, Russia
| | - V V Maximov
- Budker Institute of Nuclear Physics, 11 Lavrentieva ave., 630090 Novosibirsk, Russia
- Novosibirsk State University, 2 Pirogova str., 630090 Novosibirsk, Russia
| | - V V Prikhodko
- Budker Institute of Nuclear Physics, 11 Lavrentieva ave., 630090 Novosibirsk, Russia
- Novosibirsk State University, 2 Pirogova str., 630090 Novosibirsk, Russia
| | - E I Soldatkina
- Budker Institute of Nuclear Physics, 11 Lavrentieva ave., 630090 Novosibirsk, Russia
- Novosibirsk State University, 2 Pirogova str., 630090 Novosibirsk, Russia
| | - A L Solomakhin
- Budker Institute of Nuclear Physics, 11 Lavrentieva ave., 630090 Novosibirsk, Russia
- Novosibirsk State University, 2 Pirogova str., 630090 Novosibirsk, Russia
| | - D V Yakovlev
- Novosibirsk State University, 2 Pirogova str., 630090 Novosibirsk, Russia
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Molvik AW, Moir RW, Ryutov DD, Simonen TC. Axisymmetric Magnetic Mirror Applications – Divertor Test Stand to Fusion Power Plant. FUSION SCIENCE AND TECHNOLOGY 2012. [DOI: 10.13182/fst12-a13399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- A. W. Molvik
- Lawrence Livermore National Laboratory, Livermore, CA 94550 USA,
| | - R. W. Moir
- Lawrence Livermore National Laboratory, Livermore, CA 94550 USA,
| | - D. D. Ryutov
- Lawrence Livermore National Laboratory, Livermore, CA 94550 USA,
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Fowler K. Tribute to Dick Post on His 90th Birthday. JOURNAL OF FUSION ENERGY 2008. [DOI: 10.1007/s10894-008-9147-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Horton W, Pratt J, Berk HL, Hirata M. Energy Confinement Scaling Predictions for the Stabilized Tandem Mirror. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - J. Pratt
- University of Texas at Austin, IFS
| | | | - M. Hirata
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, Japan
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England AC, Lee DK, Lee SG, Kwon M, Yoon SW. Experiments in the Hanbit Mirror Device with the Kinetic Stabilizer. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- A. C. England
- National Fusion Research Center, 52 Eoeun-dong, Yuseong-gu, Daejeon, 305-333 Republic of Korea
| | - D. K. Lee
- National Fusion Research Center, 52 Eoeun-dong, Yuseong-gu, Daejeon, 305-333 Republic of Korea
| | - S. G. Lee
- National Fusion Research Center, 52 Eoeun-dong, Yuseong-gu, Daejeon, 305-333 Republic of Korea
| | - M. Kwon
- National Fusion Research Center, 52 Eoeun-dong, Yuseong-gu, Daejeon, 305-333 Republic of Korea
| | - S. W. Yoon
- National Fusion Research Center, 52 Eoeun-dong, Yuseong-gu, Daejeon, 305-333 Republic of Korea
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Post RF. Combining the “Kinetic Tandem” and the “Kinetic Stabilizer” Concepts. JOURNAL OF FUSION ENERGY 2006. [DOI: 10.1007/s10894-006-9052-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Fisch NJ. Alpha channeling in mirror machines. PHYSICAL REVIEW LETTERS 2006; 97:225001. [PMID: 17155807 DOI: 10.1103/physrevlett.97.225001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2005] [Indexed: 05/12/2023]
Abstract
The injection of radio frequency waves can cool charged particles trapped in a magnetic mirror. This cooling effect relies upon waves with azimuthal and axial phase velocities resonating with ions in different axial locations. The ions are then forced to diffuse along highly constrained orbits, such that they can only exit the magnetic trap at low energy. This cooling effect may have application to magnetic fusion mirror machines, where the free energy of the fusion by-products, the alpha particles, might be channeled into the waves that effect the cooling, thereby both extracting the fusion ash quickly and making that energy available in a convenient form for more useful purposes.
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Affiliation(s)
- N J Fisch
- Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08540, USA
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