Achieving high flux amplification in a gun-driven, flux-core spheromak
| dc.contributor.author | Hooper, E.B. | |
| dc.contributor.author | Hill, D.N. | |
| dc.contributor.author | McLean, H.S. | |
| dc.contributor.author | Romero-Talamás, Carlos | |
| dc.contributor.author | Wood, R.D. | |
| dc.date.accessioned | 2024-01-24T10:54:19Z | |
| dc.date.available | 2024-01-24T10:54:19Z | |
| dc.date.issued | 2007-08-03 | |
| dc.description.abstract | A new means of operating flux-core spheromaks with possibly increased stability, confinement and pulse length is analysed by a resistive magnetohydrodynamic (MHD) model. High amplification of the bias poloidal flux, required to minimize ohmic losses, is achieved by reducing the bias rapidly in a plasma formed at a lower amplification. The plasma separatrix is predicted to expand and incorporate the removed bias flux maintaining the total poloidal flux within the spheromak's flux-conserving wall. MHD energy on open magnetic field lines is reduced, reducing magnetic fluctuation levels. A means of experimental verification is suggested that may point the way to fusion-relevant spheromaks. | |
| dc.description.sponsorship | The approach to flux amplification analysed here arose from discussions with T.K. Fowler. C.R. Sovinec’s guidance was essential in modifying NIMROD for the ABR calculations. Careful reading and comments by B.I. Cohen and E.J. Synakowski are gratefully acknowledged. Discussions with many colleagues, including L.L. LoDestro, L.D. Pearlstein and D.D. Ryutov, have helped form our understanding of spheromaks. This work was performed under the auspices of the US Department of Energy under contract W7405-ENG-48 at the University of California Lawrence Livermore National Laboratory | |
| dc.description.uri | https://iopscience.iop.org/article/10.1088/0029-5515/47/8/042 | |
| dc.format.extent | 8 pages | |
| dc.genre | journal articles | |
| dc.identifier.citation | Hooper, E. B., D. N. Hill, H. S. McLean, C. A. Romero-Talamás, and R. D. Wood. “Achieving High Flux Amplification in a Gun-Driven, Flux-Core Spheromak.” Nuclear Fusion 47, no. 8 (August 2007): 1064. https://doi.org/10.1088/0029-5515/47/8/042. | |
| dc.identifier.issn | https://doi.org/10.1088/0029-5515/47/8/042 | |
| dc.identifier.uri | http://hdl.handle.net/11603/31465 | |
| dc.language.iso | en | |
| dc.publisher | IOP | |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Mechanical Engineering Department Collection | |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | |
| dc.rights | Public Domain Mark 1.0 | en |
| dc.rights.uri | https://creativecommons.org/publicdomain/mark/1.0/ | |
| dc.title | Achieving high flux amplification in a gun-driven, flux-core spheromak | |
| dc.type | Text | |
| dcterms.creator | https://orcid.org/0000-0002-6830-3126 |