G
G. J. Kramer
Researcher at Princeton Plasma Physics Laboratory
Publications - 219
Citations - 6274
G. J. Kramer is an academic researcher from Princeton Plasma Physics Laboratory. The author has contributed to research in topics: Tokamak & Plasma. The author has an hindex of 42, co-authored 212 publications receiving 5606 citations. Previous affiliations of G. J. Kramer include Japan Atomic Energy Agency & Princeton University.
Papers
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Journal ArticleDOI
Principal Physics Developments Evaluated in the ITER Design Review
R. J. Hawryluk,David Campbell,G. Janeschitz,P. R. Thomas,Raffaele Albanese,Roberto Ambrosino,Christian Bachmann,Larry R. Baylor,M. Becoulet,I. Benfatto,J.M. Bialek,Allen H. Boozer,A. Brooks,Robert Budny,T.A. Casper,M. Cavinato,J. J. Cordier,V. Chuyanov,E. J. Doyle,Todd Evans,G. Federici,M.E. Fenstermacher,H. Fujieda,K. Gál,Am Garofalo,L. Garzotti,D.A. Gates,Y. Gribov,P. Heitzenroeder,T. C. Hender,N. Holtkamp,David Humphreys,Ian H. Hutchinson,K. Ioki,J. Johner,G. Johnson,Yutaka Kamada,A. Kavin,C.E. Kessel,R. R. Khayrutdinov,G. J. Kramer,A. Kukushkin,K. Lackner,I.S. Landman,Peter Lang,Yunfeng Liang,Jochen Linke,Bruce Lipschultz,A. Loarte,G. D. Loesser,C. Lowry,T.C. Luce,V.E. Lukash,S. Maruyama,Massimiliano Mattei,Jonathan Menard,Mario Merola,A. Mineev,Neil Mitchell,Eric Nardon,Raffi Nazikian,B.E. Nelson,C. Neumeyer,Jong-Kyu Park,R. Pearce,R.A. Pitts,A. R. Polevoi,Alfredo Portone,M. Okabayashi,P.H. Rebut,V. Riccardo,J. Roth,S.A. Sabbagh,G. Saibene,G. Sannazzaro,M.J. Schaffer,Michiya Shimada,Abhijit Sen,A. C. C. Sips,C.H. Skinner,P. B. Snyder,R.D. Stambaugh,E. J. Strait,M. Sugihara,E. Tsitrone,J. Urano,M. Valovic,M. R. Wade,J.C. Wesley,Roscoe White,D.G. Whyte,S. Wu,M. Wykes,Leonid E. Zakharov +93 more
TL;DR: In this article, the ITER design requirements were reviewed and as appropriate updated and the focus of this paper will be on recent work affecting ITER with special emphasis on topics affecting near-term procurement arrangements.
Journal ArticleDOI
Overview of the SPARC tokamak
Alexander Creely,Martin Greenwald,S. B. Ballinger,Dan Brunner,John Canik,J. Doody,Tünde Fülöp,D. T. Garnier,Robert Granetz,T.K. Gray,Christopher Holland,Nathan Howard,J. W. Hughes,J. H. Irby,V.A. Izzo,G. J. Kramer,Adam Kuang,Brian LaBombard,Yuxuan Lin,Bruce Lipschultz,Nikolas Logan,Jeremy Lore,Earl Marmar,Kevin Montes,Robert Mumgaard,Carlos Paz-Soldan,Cristina Rea,Matthew Reinke,Pablo Rodriguez-Fernandez,K. Särkimäki,F. Sciortino,S. D. Scott,Antti Snicker,P. B. Snyder,Brandon Sorbom,R. Sweeney,Roy Tinguely,E.A. Tolman,Maxim Umansky,O. Vallhagen,Jari Varje,D.G. Whyte,John Wright,S.J. Wukitch,Jinxiang Zhu +44 more
TL;DR: The SPARC tokamak is a critical next step towards commercial fusion energy as discussed by the authors, and it is designed as a high-field high-energy particle accelerator relevant to fusion power plants.
Journal ArticleDOI
Radial Structure of Alfven Eigenmodes in the DIII-D Tokamak through Electron-Cyclotron-Emission Measurements
M. A. Van Zeeland,G. J. Kramer,Max E Austin,R. L. Boivin,W. W. Heidbrink,M. A. Makowski,George McKee,Raffi Nazikian,W. M. Solomon,G. Wang +9 more
TL;DR: Predictions of the measured temperature and density perturbation profiles as well as deltaT(e)/deltan(e) from the ideal magnetohydrodynamic code NOVA are in close agreement with experiment.
Journal ArticleDOI
Intense geodesic acousticlike modes driven by suprathermal ions in a tokamak plasma.
Raffi Nazikian,Guoyong Fu,Max E Austin,Herbert L Berk,Robert Budny,Nikolai Gorelenkov,William Heidbrink,C. T. Holcomb,G. J. Kramer,George McKee,M. A. Makowski,W. M. Solomon,Morgan Shafer,E. J. Strait,M. A. Van Zeeland +14 more
TL;DR: Intense axisymmetric oscillations driven by suprathermal ions injected in the direction counter to the toroidal plasma current are observed in the DIII-D tokamak, confirming a dominant compressional contribution to the pressure perturbation as predicted by kinetic theory.
Journal ArticleDOI
Alfvén eigenmode and energetic particle research in JT-60U
H. Kimura,Y. Kusama,Mikio Saigusa,G. J. Kramer,Kenji Tobita,M. Nemoto,Takashi Kondoh,Takeo Nishitani,O. Da Costa,T. Ozeki,T. Oikawa,S. Moriyama,A. Morioka,Guoyong Fu,Chio-Zong Cheng,V. I. Afanas'ev +15 more
TL;DR: In this article, the toroidicity induced Alfven eigenmodes (TAEs) were stable in negative shear discharges with a large density gradient at the internal transport barrier (ITB).