M. Osakabe
Princeton University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by M. Osakabe.
Nuclear Fusion | 2013
S. E. Sharapov; B. Alper; H. L. Berk; D. Borba; Boris N. Breizman; C. D. Chaliis; I. G. J. Classen; E. M. Endlund; Jacob Eriksson; A. Fasoli; E.D. Fredrickson; G. Y. Fu; M. Garcia-Munoz; T. Gassner; Katy Ghantous; V. Goloborod'ko; N.N. Gorelenkov; M. Gryaznevich; S. Hacquin; W.W. Heidbrink; C. Hellesen; V. Kiptily; G.J. Kramer; P. Lauber; Matthew Lilley; Mietek Lisak; F. Nabais; R. Nazikian; Robert Nyqvist; M. Osakabe
Remarkable progress has been made in diagnosing energetic particle instabilities on present-day machines and in establishing a theoretical framework for describing them. This overview describes the much improved diagnostics of Alfven instabilities and modelling tools developed world-wide, and discusses progress in interpreting the observed phenomena. A multi-machine comparison is presented giving information on the performance of both diagnostics and modelling tools for different plasma conditions outlining expectations for ITER based on our present knowledge.
Plasma Physics and Controlled Fusion | 1994
J. D. Strachan; H. Adler; Cris W. Barnes; S.H. Batha; M.G. Bell; R. E. Bell; M. Bitter; N. Bretz; R.V. Budny; C.E. Bush; M. Caorlin; Z. Chang; D.S. Darrow; H.H. Duong; R Durst; P.C. Efthimion; R.K. Fisher; R.J. Fonck; E. D. Fredrickson; B. Grek; L.R. Grisham; G. W. Hammett; R J Hawryiuk; W. W. Heidbrink; H.W. Herrmann; K. W. Hill; J. Hosea; H. Hsuan; A. Janos; D.L. Jassby
Three campaigns, prior to July 1994, attempted to increase the fusion power in DT plasmas on the Tokamak Fusion Test Reactor (TFTR). The first campaign was dedicated to obtaining >5 MW of fusion power while avoiding MHD events similar to the JET X-event. The second was aimed at producing maximum fusion power irrespective of proximity to MHD limits, and achieved 9 MW limited by a disruption. The third campaign increased the energy confinement time using lithium pellet conditioning while raising the ratio of alpha heating to beam heating.
RADIO FREQUENCY POWER IN PLASMAS: 17th Topical Conference on Radio Frequency Power in Plasmas | 2007
A. V. Krasilnikov; D. Van Eester; E. Lerche; J. Ongena; J. Mailloux; M. Stamp; S. Jachmich; H. Leggate; V. Vdovin; A. Walden; M.-L. Mayoral; G. Bonheure; M. Santala; V. Kiptily; S. Popovichev; T. M. Biewer; Kristel Crombé; B. Esposito; Davide Marocco; M. Riva; Yu A Kaschuck; V. Amosov; G. Ericsson; L. Giacomelli; C. Hellesen; Anders Hjalmarsson; J. Källne; Jet Contributors; M. Isobe; M. Nishiura
Results of the experimental studies of ICRH at the fundamental cyclotron frequency of the majority deuterons in JET plasmas with near‐tangential deuteron neutral beam injection (NBI) are presented. 1D, 2D and 3D ICRH modeling indicated that several ITER relevant mechanisms of heating may occur simultaneously in this heating scheme: fundamental ion cyclotron resonance heating of majority and beam D ions, impurity ion heating and electron heating due to Landau damping and TTMP. These mechanisms were studied in JET experiments with a ∼90% D, 5% H plasma including traces of Be and Ar. Up to 2MW of ICRH power was applied at 25 MHz to NBI heated plasmas. In most of the discharges the toroidal magnetic field strength was 3.3T, but in one it was equal to 3.6T. The E+ component of the electric field governs the ion cyclotron heating of not too fast particles. The Doppler shifted RF absorption of the beam deuterons away from the cold resonance at which E+ is small was exploited to enhance the RF power absorption ef...
