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A.W. Leonard
Researcher at General Atomics
Publications - 218
Citations - 7157
A.W. Leonard is an academic researcher from General Atomics. The author has contributed to research in topics: Divertor & DIII-D. The author has an hindex of 42, co-authored 218 publications receiving 6577 citations.
Papers
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Journal ArticleDOI
Chapter 4: Power and particle control
A. Loarte,Bruce Lipschultz,A.S. Kukushkin,G. F. Matthews,P.C. Stangeby,Nobuyuki Asakura,G. F. Counsell,G. Federici,A. Kallenbach,K. Krieger,A. Mahdavi,V. Philipps,Detlev Reiter,J. Roth,J. D. Strachan,D.G. Whyte,R.P. Doerner,T. Eich,W. Fundamenski,A. Herrmann,M.E. Fenstermacher,Philippe Ghendrih,M. Groth,A. Kirschner,S. Konoshima,Brian LaBombard,Peter Lang,A.W. Leonard,P. Monier-Garbet,Rudolf Neu,H.D. Pacher,B. Pégourié,R.A. Pitts,Shuichi Takamura,J. L. Terry,E. Tsitrone +35 more
TL;DR: In this paper, the authors describe the processes that will determine the properties of the plasma edge and its interaction with material elements in ITER and compare their predictions with the new experimental results.
Journal ArticleDOI
First tests of molybdenum mirrors for ITER diagnostics in DIII-D divertor
D.L. Rudakov,J.A. Boedo,R.A. Moyer,Andrey Litnovsky,V. Philipps,P. Wienhold,S.L. Allen,M.E. Fenstermacher,M. Groth,C.J. Lasnier,R. L. Boivin,N.H. Brooks,A.W. Leonard,W.P. West,C.P.C. Wong,Adam McLean,P.C. Stangeby,G. De Temmerman,William R. Wampler,J.G. Watkins +19 more
TL;DR: In this article, the first tests of molybdenum mirrors were performed in the DIII-D divertor under deposition-dominated conditions, and two sets of mirrors recessed 2 cm below the divertor floor in the private flux region were exposed to a series of identical, lower-single-null, ELMing (featuring edge localized modes) H-mode discharges with detached plasma conditions in both divertor legs.
Journal ArticleDOI
Edge-localized-modes in tokamaksa)
TL;DR: In this article, the authors show that when the gradient in the H-mode transport barrier grows to exceed the MHD stability limit, the ELM instability grows explosively, rapidly transporting energy and particles onto open field lines and material surfaces.
Journal ArticleDOI
Effect of island overlap on edge localized mode suppression by resonant magnetic perturbations in DIII-D
M.E. Fenstermacher,Todd Evans,T.H. Osborne,M.J. Schaffer,M.P. Aldan,J.S. deGrassie,P. Gohil,Ilon Joseph,R.A. Moyer,P. B. Snyder,R. J. Groebner,M. W. Jakubowski,A.W. Leonard,Oliver Schmitz +13 more
TL;DR: In this article, a correlation between the extent of overlap of magnetic islands induced in the edge plasma by perturbation coils and complete suppression of Type-I edge localized modes (ELMs) in plasmas with ITER-like electron pedestal collisionality was found.
Journal ArticleDOI
The EPED pedestal model and edge localized mode-suppressed regimes: Studies of quiescent H-mode and development of a model for edge localized mode suppression via resonant magnetic perturbations
P. B. Snyder,T.H. Osborne,K. H. Burrell,R. J. Groebner,A.W. Leonard,Raffi Nazikian,D.M. Orlov,Oliver Schmitz,M. R. Wade,H. R. Wilson +9 more
TL;DR: In this paper, the EPED model was used to predict pedestal height and width for quiescent H-mode (QH) discharges with edge localized modes (ELMs) and found good quantitative agreement across a range of parameters.