Zobrazeno 1 - 10
of 41
pro vyhledávání: '"J B Wilgen"'
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
https://doi.org/10.1088/0741-3335/43/3/306
Autor:
M. G. Shats, K. M. Likin, J. B. Wilgen, J. H. Harris, K. A. Sarksyan, L. R. Baylor, J. D. Bell, T. S. Bigelow, J. L. Dunlap, R. C. Goldfinger, C. H. Ma
Publikováno v:
Review of Scientific Instruments. 66:1221-1224
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::409d4f1ced0b0cde89b431be2838564f
https://doi.org/10.1063/1.1146010
https://doi.org/10.1063/1.1146010
Autor:
E. F. Jaeger, J. R. Wilson, S. A. Sabbagh, S. Gerhardt, K. Tritz, R. Maingi, B. P. LeBlanc, G. Taylor, J. C. Hosea, T. K. Gray, David Green, R. E. Bell, C. K. Phillips, J. W. Ahn, Adam McLean, J. B. Wilgen, P. M. Ryan, L. Roquemore
Publikováno v:
AIP Conference Proceedings.
ELMs reduce the stored energy achieved with HHFW heating compared with the ELM free case as also occurs for NBI heating alone. This reduction can be attributed both to direct ELM ejection of stored energy and to an increase in edge density with ELMs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b027e250095c08ad5a715858e57506ca
https://doi.org/10.1063/1.3664986
https://doi.org/10.1063/1.3664986
Autor:
J. B. O. Caughman, Á. Cappa, J. M. Garcia-Regaña, F. Castejón, A. Fernández, D. A. Rasmussen, J. B. Wilgen, Volodymyr Bobkov, Jean-Marie Noterdaeme
Publikováno v:
AIP Conference Proceedings.
Thermal electron emission at 28 GHz has been measured on the TJ‐II Stellarator. The microwave emission from over‐dense neutral beam heated plasmas, where the plasma density is greater than the ordinary‐mode (O‐mode) cutoff density (>1.2×1019
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fcf98db08468b04d96d761b526d39ff
https://doi.org/10.1063/1.3273792
https://doi.org/10.1063/1.3273792
Autor:
J. R. Wilson, E. F. Jaeger, P. M. Ryan, C. K. Phillips, E. J. Valeo, E. Feibush, Lane Roquemore, G. Taylor, K. Tritz, Rajesh Maingi, J. C. Hosea, R. E. Bell, R. W. Harvey, B. P. LeBlanc, J. B. Wilgen
Publikováno v:
AIP Conference Proceedings.
The goal of the high harmonic fast wave (HHFW) research on NSTX is to maximize the coupling of RF power to the core of the plasma by minimizing the coupling of RF power to edge loss processes. HHFW core plasma heating efficiency in helium and deuteri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d1aa6cad2a22c0f6a4bdb3f5ebf8637
https://doi.org/10.1063/1.3273706
https://doi.org/10.1063/1.3273706
Autor:
Josef Preinhaelter, Carter, J.B. Caughman, J. B. Wilgen, P. C. Efthimion, S.A. Sabbagh, B.P. LeBlanc, G. Taylor, R. W. Harvey
Efficient coupling of thermal electron Bernstein waves (EBW) to ordinary mode (Omode) electromagnetic radiation has been measured in plasmas heated by energetic neutral beams and high harmonic fast waves in the National Spherical Torus Experiment (NS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15603e9dfd2d0ff77c0cf019750a96b4
https://doi.org/10.2172/836631
https://doi.org/10.2172/836631
Autor:
J. C. Hosea, J. R. Wilson, J. B. Wilgen, R. Kaita, Abhay K. Ram, G. L. Bell, P. Efthimion, B. Jones, R. W. Harvey, G. Taylor, Abraham Bers, R. Majeski, Tobin Munsat, J. Spaleta, A P Smirnov, D. A. Rasmussen
Publikováno v:
Electron Cyclotron Emission and Electron Cyclotron Heating.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b8ff7d33ad1df11cc97c59383a43bd9
https://doi.org/10.1142/9789812705082_0024
https://doi.org/10.1142/9789812705082_0024
Publikováno v:
AIP Conference Proceedings.
Electron Bernstein Waves (EBW) provide a mechanism to heat electrons in over‐dense plasma using microwave sources. The mode conversion between ordinary or extra‐ordinary waves and EBW depends on density gradients in the plasma edge, the angle of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7379867436ea5c424a8a1870f5fc39c9
https://doi.org/10.1063/1.1638060
https://doi.org/10.1063/1.1638060
Autor:
P. M. Ryan, G. Taylor, J. B. Wilgen, K. Indireshkumar, Rajesh Maingi, S. Bernabei, T. K. Mau, J. R. Wilson, D. W. Swain, R. E. Bell, S. M. Kaye, B. P. Leblanc
Publikováno v:
AIP Conference Proceedings.
The launch of High‐Harmonic Fast Waves (HHFW) routinely provides auxiliary power to NSTX plasmas, where it is used to heat electrons and pursue drive current. H‐mode transitions have been observed in deuterium discharges, where only HHFW and ohmi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36401ac53a1a3a7614eccb23ff2e3435
https://doi.org/10.1063/1.1638027
https://doi.org/10.1063/1.1638027
Autor:
D. A. Rasmussen, A P Smirnov, B. P. Leblanc, Rajesh Maingi, J. B. Wilgen, B. Jones, J. R. Wilson, G. Taylor, T. S. Bigelow, P. Efthimion, G. L. Bell, F. Paoletti, R. W. Harvey, S. A. Sabbagh
A four-fold increase in the conversion of thermal electron-Bernstein waves (EBW) to the extraordinary mode (X-mode) was measured when the density scale length (L subscript ''n'') was progressively shortened by a local Boron nitride limiter in the scr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f5134d999ffbf2e09c83b5440ba0c21
https://doi.org/10.2172/809850
https://doi.org/10.2172/809850