Zobrazeno 1 - 10 of 26 pro vyhledávání: '"M. J. Schaffer"'
1
Toroidally resolved structure of divertor heat flux in RMP H-mode discharges on DIII-D
Autor: Cc Petty, Oliver Schmitz, A. W. Leonard, Ezekial A Unterberg, R.A. Moyer, P. B. Snyder, R. Laengner, J. G. Watkins, L. R. Baylor, T. W. Petrie, H. Stoschus, T. H. Osborne, T. L. Rhodes, T. E. Evans, M. J. Schaffer, J. S. Degrassie, K. H. Burrell, R. I. Pinsker, P. Gohil, Saskia Mordijck, J. A. Boedo, D. M. Orlov, M. W. Jakubowski, R. C. Wolf, M. E. Fenstermacher, C. J. Lasnier
Publikováno v: Journal of Nuclear Materials. 415:S901-S905
As shown on DIII-D edge localized modes (ELMs) can be either completely eliminated or mitigated with resonant magnetic perturbation (RMP) fields. Two infrared cameras, separated 105° toroidally, were used to make simultaneous measurements of ELM hea
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ccec6f87ad518bdb5ccee25152862d8
https://doi.org/10.1016/j.jnucmat.2010.12.005
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2
Influence of the Resonant Magnetic Perturbation on the Plasma Boundary in DIII-D
Autor: T. H. Osborne, Saskia Mordijck, R.A. Moyer, J.A. Boedo, J. S. deGrassie, Oliver Schmitz, Anthony Leonard, Todd Evans, Keith H. Burrell, H. Frerichs, R. C. Wolf, M. J. Schaffer, P. Gohil, Detlev Reiter, M. E. Fenstermacher, M. W. Jakubowski, Larry R. Baylor, J. G. Watkins, C. J. Lasnier, Ezekial A Unterberg, U. Samm
Publikováno v: Contributions to Plasma Physics. 50:701-707
Stochastic boundaries in fusion devices have been investigated in tokamaks, stellarators and reversed field pinch experiments for many years. However, since edge localized modes (ELMs) have been successfully eliminated in H-mode plasmas at the DIII-D
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9f9d774cc67f54f047423e2eb8a2758c
https://doi.org/10.1002/ctpp.201000004
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3
Analytical equilibrium and interchange stability of single- and double-axis field-reversed configurations inside a cylindrical cavity
Autor: M. J. Schaffer, P. B. Parks
Publikováno v: Physics of Plasmas. 10:1411-1423
This paper reports on the interchange stability of a realistic analytical equilibrium solution of a field-reversed configuration (FRC) contained within a tight fitting cylindrical flux conserver with end walls, no external flux, and arbitrary elongat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24c4ed2e1bdb9ad099e64b0fe3b3d8d8
https://doi.org/10.1063/1.1566025
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4
Nonlinear stability of field-reversed configurations with self-generated toroidal field
Autor: Y. A. Omelchenko, M. J. Schaffer, P. B. Parks
Publikováno v: Physics of Plasmas. 8:4463-4469
The field-reversed configuration (FRC) is a high-beta compact toroidal plasma confinement scheme in which the external poloidal field is reversed on the geometric axis by azimuthal (toroidal) plasma current. A quasineutral, hybrid, particle-in-cell (
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::325f58f1c03fc8f0abe5b5440dc461b4
https://doi.org/10.1063/1.1401119
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6
Initial results from coaxial helicity injection experiments in NSTX
Autor: R Raman, T R Jarboe, D Mueller, M J Schaffer, R Maqueda, B A Nelson, S Sabbagh, M Bell, R Ewig, E Fredrickson, D Gates, J Hosea, H Ji, R Kaita, S M Kaye, H Kugel, R Maingi, J Menard, M Ono, D Orvis, F Paoletti, S Paul, M Peng, C H Skinner, J B Wilgen, S Zweben, the NSTX Research Team
Publikováno v: Plasma Physics and Controlled Fusion. 43:305-312
Coaxial helicity injection has been investigated on the National Spherical Torus Experiment (NSTX). Initial experiments produced 130 kA of toroidal current without the use of the central solenoid. The corresponding injector current was 20 kA. Dischar
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8892dc74e4a3a8beb5dcd5e69b229761
https://doi.org/10.1088/0741-3335/43/3/306
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7
Experiments on steady state particle control in Tore Supra and DIII-D
Autor: T. Hutter, B. Pégourié, C. Grisolia, M. R. Wade, A. Grosman, Taner Uckan, T. Loarer, Ph. Ghendrih, Larry W Owen, C. Christopher Klepper, Dongkyu Lee, M.A. Mahdavi, P.K. Mioduszewski, M J Schaffer, M. Chatelier, C. E. Thomas, Rajesh Maingi, D. L. Hillis, M.M. Menon, J.T. Hogan
Publikováno v: Scopus-Elsevier
Particle control is playing an increasingly important role in tokamak plasma performance. The present paper discusses particle control of hydrogen/deuterium by wall pumping on graphite or carbonized surfaces, as well as by external exhaust with pumpe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6462bc6be948403129db1259b2970e70
https://doi.org/10.1016/0022-3115(94)00449-8
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10
Comparison of transient and stationary neutral pressure response in the DIII-D advanced divertor
Autor: P.K. Mioduszewski, G. Haas, J.T. Hogan, D. N. Hill, T.E. Evans, C. Christopher Klepper, Rajesh Maingi, J.G. Gilligan, D. Buchenauer, M. J. Schaffer, M. Ali Mahdavi, Larry W Owen, T. W. Petrie, G. L. Jackson
Publikováno v: Journal of Nuclear Materials. :1090-1095
The DIII-D divertor baffle system was designed to facilitate density control in long pulse H-mode discharges by removing a particle flux equal to the neutral beam fueling rate (∼20 Torrl/s) with a ∼1 mTorr neutral pressure under the baffle (p0).
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04159dcd727bf9f5d23a108531a26b2d
https://doi.org/10.1016/s0022-3115(06)80201-1
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