J
J.F. Schivell
Researcher at Princeton University
Publications - 78
Citations - 2315
J.F. Schivell is an academic researcher from Princeton University. The author has contributed to research in topics: Tokamak Fusion Test Reactor & Plasma. The author has an hindex of 27, co-authored 78 publications receiving 2244 citations.
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Journal ArticleDOI
Local measurements of correlated momentum and heat transport in the TFTR tokamak.
S. D. Scott,Patrick Diamond,R. J. Fonck,Robert James Goldston,R. B. Howell,K. P. Jaehnig,G. Schilling,E. J. Synakowski,M. C. Zarnstorff,C. E. Bush,E.D. Fredrickson,K. W. Hill,A.C. Janos,D. K. Mansfield,D. K. Owens,Hyeon K. Park,G. Pautasso,A. T. Ramsey,J.F. Schivell,G. D. Tait,William Tang,G. Taylor +21 more
TL;DR: Simultaneous profile measurements of the toroidal rotation speed and ion temperature during unbalanced neutral beam injection in the Tokamak Fusion Test Reactor show that the ion momentum and thermal diffusivities are comparable in magnitude and vary similarly with plasma current and minor radius.
Journal ArticleDOI
Simulations of deuterium-tritium experiments in TFTR
Robert Budny,M. G. Bell,H. Biglari,Manfred Bitter,C.E. Bush,Chio-Zong Cheng,E.D. Fredrickson,B. Grek,K. W. Hill,H. Hsuan,A.C. Janos,D. L. Jassby,David W. Johnson,L. C. Johnson,B.P. LeBlanc,D.C. McCune,D. R. Mikkelsen,H.K. Park,A. T. Ramsey,S.A. Sabbagh,S. D. Scott,J.F. Schivell,J. D. Strachan,B. C. Stratton,E. J. Synakowski,G. Taylor,M. C. Zarnstorff,S. J. Zweben +27 more
TL;DR: In this article, a transport code (TRANSP) is used to simulate future deuterium-tritium (DT) experiments in TFTR DD discharges, and the modelling of one supershot is discussed in detail to indicate the degree of accuracy of the TRANSP modelling.
Journal ArticleDOI
Fusion power production from TFTR plasmas fueled with deuterium and tritium
J. D. Strachan,H. Adler,P. Alling,C. Ancher,H. Anderson,J.L. Anderson,D. Ashcroft,Cris W. Barnes,G. Barnes,S. H. Batha,M. G. Bell,R.E. Bell,Manfred Bitter,W. R. Blanchard,N. L. Bretz,Robert Budny,C.E. Bush,R. Camp,M. Caorlin,S. Cauffman,Z. Chang,Chio-Zong Cheng,J. Collins,G. Coward,D. S. Darrow,J. DeLooper,H.H. Duong,L. Dudek,R. Durst,P. C. Efthimion,D.R. Ernst,R. K. Fisher,R. J. Fonck,E.D. Fredrickson,N. Fromm,Guoyong Fu,Harold P. Furth,C. Gentile,N. N. Gorelenkov,B. Grek,L. R. Grisham,Gregory W. Hammett,G. R. Hanson,R. J. Hawryluk,William Heidbrink,H. W. Herrmann,K. W. Hill,J. Hosea,H. Hsuan,A.C. Janos,D. L. Jassby,F. C. Jobes,David W. Johnson,L. C. Johnson,J. H. Kamperschroer,H.W. Kugel,N. T. Lam,P. H. LaMarche,Michael Loughlin,B.P. LeBlanc,M. Leonard,Fred Levinton,J. Machuzak,D.K. Mansfield,A. Martin,E. Mazzucato,Richard Majeski,E.S. Marmar,J.M. McChesney,B. McCormack,D.C. McCune,K. M. McGuire,G. R. McKee,Dale Meade,S. S. Medley,D. R. Mikkelsen,D. Mueller,M. Murakami,A. Nagy,Raffi Nazikian,R. Newman,Takeo Nishitani,M. Norris,T. O’Connor,M. Oldaker,Masaki Osakabe,D. K. Owens,Hyeon K. Park,W. Park,S.F. Paul,G. Pearson,E. Perry,M. P. Petrov,C. K. Phillips,S. Pitcher,A. T. Ramsey,David A Rasmussen,M. H. Redi,D. W. Roberts,J. H. Rogers,R. Rossmassler,A. L. Roquemore,E. Ruskov,S.A. Sabbagh,Mamiko Sasao,G. Schilling,J.F. Schivell,G. L. Schmidt,S. D. Scott,R. Sissingh,C.H. Skinner,Joseph Snipes,J. E. Stevens,T. Stevenson,B. C. Stratton,E. J. Synakowski,William Tang,G. Taylor,J. L. Terry,M. E. Thompson,M. Tuszewski,C. Vannoy,A. von Halle,S. von Goeler,D. Voorhees,R. T. Walters,R. M. Wieland,John B Wilgen,M. Williams,James R. Wilson,K. L. Wong,G. A. Wurden,Masaaki Yamada,Kenneth M. Young,M. C. Zarnstorff,S. J. Zweben +135 more
TL;DR: The measured loss rate of energetic alpha particles agreed with the approximately 5% losses expected from alpha particles which are born on unconfined orbits.
Journal ArticleDOI
Nondimensional transport scaling in the Tokamak Fusion Test Reactor: Is tokamak transport Bohm or gyro‐Bohm?
F. W. Perkins,Cris W. Barnes,David W. Johnson,S. D. Scott,M. C. Zarnstorff,M. G. Bell,R.E. Bell,C.E. Bush,B. Grek,K. W. Hill,D.K. Mansfield,Hyeon K. Park,A. T. Ramsey,J.F. Schivell,B. C. Stratton,E. J. Synakowski +15 more
TL;DR: Meade et al. as mentioned in this paper reported an experimental determination of how F varies with normalized gyroradius ρ*≡(2TeMi)1/2c/eBa and collisionality ν* ≡(R/r)3/2qRνe(me/ 2Te) 1/2
Journal ArticleDOI
Simulations of alpha parameters in a TFTR DT supershot with high fusion power
R.V. Budny,M. G. Bell,A.C. Janos,D. L. Jassby,L. C. Johnson,D.K. Mansfield,D.C. McCune,M. H. Redi,J.F. Schivell,G. Taylor,T.B. Terpstra,M. C. Zarnstorff,S. J. Zweben +12 more
TL;DR: In this paper, the effects of toroidal ripple and mixing of the fast alpha particles during the sawteeth observed after the neutral beam injection phase are modelled, and the distributions of alpha particles on the outer midplane are peaked near forward and backward v1/v.