S
Stephen Wukitch
Researcher at Massachusetts Institute of Technology
Publications - 40
Citations - 728
Stephen Wukitch is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Alcator C-Mod & Tokamak. The author has an hindex of 11, co-authored 40 publications receiving 641 citations.
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Journal ArticleDOI
I-mode: an H-mode energy confinement regime with L-mode particle transport in Alcator C-Mod
D.G. Whyte,Amanda Hubbard,J. W. Hughes,Bruce Lipschultz,J. E. Rice,E.S. Marmar,Martin Greenwald,Istvan Cziegler,Arturo Dominguez,Theodore Golfinopoulos,Nathan Howard,Li-Chiang Lin,R. M. McDermott,Miklos Porkolab,Matthew Reinke,J. L. Terry,Naoto Tsujii,S.M. Wolfe,Stephen Wukitch,Yuxuan Lin +19 more
TL;DR: In this article, an improved energy confinement regime, I-mode, is studied in Alcator C-Mod, a compact high-field divertor tokamak using ion cyclotron range of frequencies (ICRFs) auxiliary heating.
Journal ArticleDOI
Poloidal variation of high-Z impurity density due to hydrogen minority ion cyclotron resonance heating on Alcator C-Mod
Matthew Reinke,Ian H. Hutchinson,John Rice,Nathaniel Thomas Howard,A. Bader,Stephen Wukitch,Yijun Lin,David Pace,Amanda Hubbard,J. W. Hughes,Y. Podpaly +10 more
TL;DR: In this paper, a parallel high-Z impurity transport theory is extended to account for cyclotron effects and shown to agree with experimentally measured impurity density asymmetries.
Journal ArticleDOI
Lower Hybrid Current Drive at High Density in Alcator C-Mod
Gregory Wallace,Amanda Hubbard,Paul Bonoli,Ian Faust,R. W. Harvey,Jerry Hughes,Brian LaBombard,Orso Meneghini,R.R. Parker,Andrea Schmidt,Andrea Schmidt,S. Shiraiwa,Alexander Smirnov,D.G. Whyte,James R. Wilson,John Wright,Stephen Wukitch +16 more
TL;DR: Experimental observations of lower hybrid current drive (LHCD) at high density on the Alcator C-Mod tokamak are presented in this article, where it is shown that the absence of fast electrons driven by LHCD may be due to parasitic collisional absorption in the scrape-off layer (SOL).
Poloidal variation of high-Z impurity density due to hydrogen minority ion cyclotron resonance heating on Alcator C-Mod
Matthew Reinke,Ian H. Hutchinson,John Rice,Nathaniel Thomas Howard,A. Bader,Stephen Wukitch,Yijun Lin,David Pace,Amanda Hubbard,J. W. Hughes,Y. Podpaly +10 more
TL;DR: In this paper, a parallel high-Z impurity transport theory is extended to account for cyclotron effects and shown to agree with experimentally measured impurity density asymmetries.
Journal ArticleDOI
Power requirements for superior H-mode confinement on Alcator C-Mod: experiments in support of ITER
Jerry Hughes,A. Loarte,Matthew Reinke,J.L. Terry,Dan Brunner,Martin Greenwald,Amanda Hubbard,B. LaBombard,Bruce Lipschultz,Y. Ma,S.M. Wolfe,Stephen Wukitch +11 more
TL;DR: In this paper, the authors examined the power requirements for maintaining sufficiently high confinement (i.e., normalized energy confinement time H98? 1) in H-mode and its relation to Hmode threshold power scaling, Pth, and examined the compatibility of impurity seeding with high performance operation.