M
M.J. Schaffer
Researcher at General Atomics
Publications - 218
Citations - 10006
M.J. Schaffer is an academic researcher from General Atomics. The author has contributed to research in topics: Divertor & Tokamak. The author has an hindex of 51, co-authored 204 publications receiving 9479 citations.
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Journal ArticleDOI
Chapter 3: MHD stability, operational limits and disruptions
T. C. Hender,J.C. Wesley,J.M. Bialek,Anders Bondeson,Allen H. Boozer,R.J. Buttery,Am Garofalo,Timothy Goodman,Robert Granetz,Y. Gribov,O. Gruber,Mikhail Gryaznevich,G. Giruzzi,Sibylle Günter,Nobuhiko Hayashi,Per Helander,Chris Hegna,D. F. Howell,D.A. Humphreys,G. T. A. Huysmans,A.W. Hyatt,Akihiko Isayama,Stephen Jardin,Yasunori Kawano,A. Kellman,C.E. Kessel,H. R. Koslowski,R. J. La Haye,E. Lazzaro,Yueqiang Liu,V.E. Lukash,J. Manickam,S. Medvedev,V. Mertens,S. V. Mirnov,Y. Nakamura,G.A. Navratil,M. Okabayashi,Takahisa Ozeki,Roberto Paccagnella,G. Pautasso,F. Porcelli,V. D. Pustovitov,V. Riccardo,M. Sato,Olivier Sauter,M.J. Schaffer,Michiya Shimada,Piergiorgio Sonato,E. J. Strait,M. Sugihara,Manabu Takechi,A. D. Turnbull,E. Westerhof,D.G. Whyte,R. Yoshino,H. Zohm +56 more
TL;DR: A review of recent advances in the area of MHD stability and disruptions, since the publication of the 1999 ITER Physics Basis document (1999 Nucl. Fusion 39 2137-2664), is reviewed in this paper.
Journal ArticleDOI
Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary.
Todd Evans,R.A. Moyer,P R Thomas,J.G. Watkins,T.H. Osborne,Jose Boedo,E. J. Doyle,Max E. Fenstermacher,K.H. Finken,R. J. Groebner,M. Groth,J. H. Harris,R.J. La Haye,C.J. Lasnier,Suguru Masuzaki,Nobuyoshi Ohyabu,D. G. Pretty,T. L. Rhodes,H. Reimerdes,D.L. Rudakov,M.J. Schaffer,G. Wang,Lei Zeng +22 more
TL;DR: Stochastic boundaries are compatible with H modes and may be attractive for ELM control in next-step fusion tokamaks, and the H mode transport barrier and core confinement are unaffected by the stochastic boundary.
Journal ArticleDOI
Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas
Todd Evans,R.A. Moyer,Keith H. Burrell,Max E. Fenstermacher,Ilon Joseph,Anthony Leonard,Tom Osborne,G.D. Porter,M.J. Schaffer,P. B. Snyder,Paul R. Thomas,J.G. Watkins,William P. West +12 more
TL;DR: In this article, the authors show that the addition of small resonant magnetic field perturbations completely eliminates ELMs while maintaining a steady-state high-confinement (H-mode) plasma.
Journal ArticleDOI
Transport by intermittent convection in the boundary of the DIII-D tokamak
Jose Boedo,Dmitry Rudakov,R.A. Moyer,Sergei Krasheninnikov,Dennis Whyte,G. R. McKee,George Tynan,M.J. Schaffer,P.C. Stangeby,P. West,S.L. Allen,Todd Evans,R. J. Fonck,E. M. Hollmann,Anthony Leonard,A. Mahdavi,G. D. Porter,M. Tillack,G. Antar +18 more
TL;DR: Intermittent plasma objects (IPOs) featuring higher pressure than the surrounding plasma, and responsible for ∼50% of the E×BT radial transport, are observed in the scrape off layer (SOL) and edge of the DIII-D tokamak.
Journal ArticleDOI
Transport by intermittency in the boundary of the DIII-D tokamak
Jose Boedo,Dmitry Rudakov,R.A. Moyer,G. R. McKee,R.J. Colchin,M.J. Schaffer,P. G. Stangeby,W. P. West,S.L. Allen,Todd Evans,R. J. Fonck,E. M. Hollmann,Sergei Krasheninnikov,Anthony Leonard,W. M. Nevins,M.A. Mahdavi,G.D. Porter,George Tynan,Dennis Whyte,Xueqiao Xu +19 more
TL;DR: Intermittent plasma objects (IPOs), featuring higher pressure than the surrounding plasma, are responsible for ∼50% of the E×BT radial transport in the scrape off layer (SOL) of the Doublet III D (DIII-D) tokamak as mentioned in this paper.