R
R. K. Fisher
Researcher at General Atomics
Publications - 56
Citations - 1860
R. K. Fisher is an academic researcher from General Atomics. The author has contributed to research in topics: Alpha particle & Plasma. The author has an hindex of 22, co-authored 56 publications receiving 1743 citations.
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Journal ArticleDOI
Chapter 7: Diagnostics
A. J. H. Donné,A. E. Costley,Robin Barnsley,Henrik Bindslev,R. L. Boivin,Garrard Conway,R. K. Fisher,R. Giannella,H. J. Hartfuss,M. von Hellermann,E.R. Hodgson,L. C. Ingesson,Kiyoshi Itami,David Johnson,Yasunori Kawano,Takashi Kondoh,A. V. Krasilnikov,Yoshinori Kusama,Andrey Litnovsky,Ph. Lotte,P. Nielsen,Takeo Nishitani,F. Orsitto,Byron J. Peterson,G. Razdobarin,J. Sánchez,Mamiko Sasao,Tatsuo Sugie,George Vayakis,V. S. Voitsenya,K. Vukolov,Chris Walker,K. Young +32 more
TL;DR: In this paper, the authors describe the requirements for high reliability in the systems (diagnostics) that provide the measurements in the ITER environment, which is similar to those made on the present-day large tokamaks while the specification of the measurements will be more stringent.
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
Measurements and modeling of Alfvén eigenmode induced fast ion transport and loss in DIII-D and ASDEX Upgrade
M. A. Van Zeeland,W. W. Heidbrink,R. K. Fisher,M. Garcia Munoz,G. J. Kramer,D. C. Pace,Roscoe White,S. Aekaeslompolo,Max E Austin,J. E. Boom,I. G. J. Classen,S. da Graca,Benedikt Geiger,M.V. Gorelenkova,N. N. Gorelenkov,A.W. Hyatt,Neville C. Luhmann,M. Maraschek,George McKee,R.A. Moyer,Christopher Muscatello,Raffi Nazikian,Hyeon K. Park,S. E. Sharapov,W. Suttrop,G. Tardini,Benjamin Tobias,Y. B. Zhu,Diii-D +28 more
TL;DR: In this article, neutral beam injection into reversed magnetic shear DIII-D and ASDEX upgrade plasmas produces a variety of Alfvenic activity including toroidicity-induced Alfven eigenmodes (RSAEs) and reversed shear Alfven (RSE) during discharge current ramp phase when incomplete current penetration results in a high central safety factor and increased drive due to multiple higher order resonances.
Journal ArticleDOI
Fusion plasma experiments on TFTR: A 20 year retrospective*
R. J. Hawryluk,S. H. Batha,W. Blanchard,Michael A. Beer,M. G. Bell,R. E. Bell,Herbert L Berk,S. Bernabei,M. Bitter,Boris Breizman,Norton Bretz,R. Budny,C.E. Bush,James D. Callen,R. Camp,S. Cauffman,Z. Chang,Chio-Zong Cheng,D. S. Darrow,R. O. Dendy,William Dorland,H.H. Duong,P. C. Efthimion,Darin Ernst,Nathaniel J. Fisch,R. K. Fisher,R.J. Fonck,E.D. Fredrickson,Guoyong Fu,Harold P. Furth,N. N. Gorelenkov,B. Grek,L. R. Grisham,G. W. Hammett,Gregory R. Hanson,H. W. Herrmann,M. C. Herrmann,K. W. Hill,J.T. Hogan,J. C. Hosea,Wayne A Houlberg,M. H. Hughes,R. A. Hulse,D. L. Jassby,F. C. Jobes,D. W. Johnson,R. Kaita,S. Kaye,J. S. Kim,Michael W Kissick,A. V. Krasilnikov,H. Kugel,A. Kumar,B.P. LeBlanc,Fred Levinton,C. Ludescher,R. P. Majeski,J. Manickam,D. K. Mansfield,E. Mazzucato,J. McChesney,D.C. McCune,K. M. McGuire,Dale Meade,S. S. Medley,R. Mika,D. R. Mikkelsen,S. V. Mirnov,D. Mueller,A. Nagy,Gerald Navratil,Raffi Nazikian,M. Okabayashi,Hyeon K. Park,W. Park,S.F. Paul,G. Pearson,M. P. Petrov,C. K. Phillips,M. Phillips,A. T. Ramsey,M. H. Redi,G. Rewoldt,S.N. Reznik,A. L. Roquemore,J. Rogers,E. Ruskov,S.A. Sabbagh,Mamiko Sasao,G. Schilling,J.F. Schivell,G. L. Schmidt,S. D. Scott,I. Semenov,C. H. Skinner,T. Stevenson,B. C. Stratton,J. D. Strachan,W. Stodiek,E.J. Synakowski,H. Takahashi,W. Tang,G. Taylor,M. E. Thompson,S. von Goeler,A. von Halle,R. T. Walters,Robert White,R. M. Wieland,M. Williams,J. R. Wilson,K. L. Wong,G. A. Wurden,Masaaki Yamada,V. Yavorski,Kenneth M. Young,Leonid E. Zakharov,M. C. Zarnstorff,Stewart Zweben +118 more
TL;DR: Hawryluk et al. as mentioned in this paper described the Tokamak Fusion Test Reactor (TFTR) experiments on high-temperature plasmas, that culminated in the study of deuterium-to-tritium D-T Plasmas containing significant populations of energetic alpha particles, spanned over two decades from conception to completion.
Journal ArticleDOI
Confinement and heating of a deuterium-tritium plasma.
R. J. Hawryluk,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,R.V. 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,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,J. D. Strachan,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,Stewart Zweben +135 more
TL;DR: Improvements in confinement associated with the use of tritium and possibly heating of electrons by α-particles are indicated.