Journal ArticleDOI
Particle Recirculation Studies in JET
E. Tsitrone,J. Bucalossi,Th. Loarer,Ph. Ghendrih,A. Loarte,P. Andrew,P. Coad,W. Fundamenski,M.F. Stamp,D. P. Coster +9 more
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In this paper, a global particle balance analysis has been applied to a variety of L-mode and H-mode deuterium discharges of the C4 campaign of JET, performed at a lower wall temperature, in different magnetic configurations and with various divertor gas puffing location.Abstract:
A global particle balance analysis has been applied to a variety of L-mode and H-mode deuterium discharges of the C4 campaign of JET, performed at a lower wall temperature, in different magnetic configurations and with various divertor gas puffing location. Wall retention and divertor particle exhaust are discussed as a function of the plasma configuration, the wall temperature and the gas puffing location. The effect on ELMs frequency is also mentioned. A simple empirical law linking the divertor pressure and the Da signal integrated on the divertor is derived, which allows one to estimate the inner and outer contribution to pumping.read more
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Chapter 4: Power and particle control
A. Loarte,Bruce Lipschultz,A.S. Kukushkin,G. F. Matthews,P.C. Stangeby,Nobuyuki Asakura,G. F. Counsell,G. Federici,A. Kallenbach,K. Krieger,A. Mahdavi,V. Philipps,Detlev Reiter,J. Roth,J. D. Strachan,D.G. Whyte,R.P. Doerner,T. Eich,W. Fundamenski,A. Herrmann,M.E. Fenstermacher,Philippe Ghendrih,M. Groth,A. Kirschner,S. Konoshima,Brian LaBombard,Peter Lang,A.W. Leonard,P. Monier-Garbet,Rudolf Neu,H.D. Pacher,B. Pégourié,R.A. Pitts,Shuichi Takamura,J. L. Terry,E. Tsitrone +35 more
TL;DR: In this paper, the authors describe the processes that will determine the properties of the plasma edge and its interaction with material elements in ITER and compare their predictions with the new experimental results.
Journal ArticleDOI
Numerical modelling of high density JET divertor plasma with the SOLPS4.2 (B2-EIRENE) code
TL;DR: In this paper, the results of calculations made for a series of high density shots at JET employing exactly the same physics model as that used for the ITER application were performed and relatively good agreement (within a factor 2) has been found for the outer divertor (with the exception of the temperature profile).
EDGE2D modelling of edge proles obtained in JET diagnostic optimised conguration
A. Kallenbach,Y. Andrew,M. Beurskens,G. Corrigan,T. Eich,S. Jachmich,A. Korotkov,A. Loarte,G. F. Matthews,P. Monier-Garbet,G. Saibene,W. Suttrop +11 more
TL;DR: In this paper, nine type-I ELMy H-mode discharges in diagnostic optimized configuration in JET are analyzed with the EDGE2D/NIMBUS package.
Journal ArticleDOI
EDGE2D modelling of edge profiles obtained in JET diagnostic optimized configuration
A. Kallenbach,Y. Andrew,M. Beurskens,G. Corrigan,T. Eich,S. Jachmich,M. Kempenaars,A. Korotkov,A. Loarte,G. F. Matthews,P. Monier-Garbet,G. Saibene,J. Spence,W. Suttrop,Jet Efda contributors +14 more
TL;DR: In this article, nine type-I ELMy H-mode discharges in diagnostic optimized configuration in JET are analyzed with the EDGE2D/NIMBUS package.
Journal ArticleDOI
Influence of atomic physics on EDGE2D-EIRENE simulations of JET divertor detachment with carbon and beryllium/tungsten plasma-facing components
C. Guillemaut,R.A. Pitts,A.S. Kukushkin,J. P. Gunn,Jérôme Bucalossi,G. Arnoux,P. Belo,S. Brezinsek,M. Brix,G. Corrigan,S. Devaux,J. Flanagan,M. Groth,D. Harting,A. Huber,S. Jachmich,U. Kruezi,Michael Lehnen,C. Marchetto,S. Marsen,A. G. Meigs,O. Meyer,M.F. Stamp,J. D. Strachan,S. Wiesen,M. Wischmeier,Jet-Efda Contributors +26 more
TL;DR: In this article, the EDGE2D-EIRENE code is applied for simulation of divertor detachment during matched density ramp experiments in high triangularity, L-mode plasmas in both JET-Carbon (JET-C) and JETITER-Like Wall (Jet-ILW).
References
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Journal ArticleDOI
Plasma{material interactions in current tokamaks and their implications for next step fusion reactors
G. Federici,C. H. Skinner,Jeffrey N. Brooks,J. P. Coad,C. Grisolia,A.A. Haasz,Ahmed Hassanein,V. Philipps,C. S. Pitcher,J. Roth,W R Wampler,Dennis Whyte +11 more
TL;DR: In this article, the authors review the underlying physical processes and the existing experimental database of plasma-material interactions both in tokamaks and laboratory simulation facilities for conditions of direct relevance to next-step fusion reactors.
Journal ArticleDOI
Effects of divertor geometry on tokamak plasmas
TL;DR: The design, construction and operation of advanced divertors have been the main topics of tokamak research during the last decade as discussed by the authors, and the design of these divertors has been optimized to provide: a large operating density range for partially detached plasmas with large radiative losses; satisfactory particle control by efficient deuterium pumping; and He exhaust capability sufficient to remove fusion ashes when extrapolated to next step devices.
Book
Atomic and plasma-material interaction processes in controlled thermonuclear fusion
TL;DR: The role of atomic and plasma-material interaction physics in controlled fusion research and development is discussed in this paper, where a review of materials erosion and redeposition research at UCLA for the development of plasma-facing components in ITER is presented.
Journal ArticleDOI
Tritium recycling and retention in JET
Philip Andrew,D. Brennan,J.P. Coad,J.K. Ehrenberg,M. Gadeberg,A. Gibson,M. Groth,J. How,O.N. Jarvis,H.S. Jensen,R Lässer,F.B. Marcus,R.D. Monk,P. D. Morgan,J. Orchard,A. Peacock,R Pearce,M Pick,A Rossi,B. Schunke,M.F. Stamp,M. von Hellermann,D. L. Hillis,J.T. Hogan +23 more
TL;DR: In this paper, a detailed study of hydrogenic isotope recycling and retention in a pumped divertor configuration relevant to ITER is presented, which suggests that ITER may reach its tritium inventory limit in less than 100 pulses.
Journal ArticleDOI
Plasma wall interaction during long pulse operation in Tore Supra
TL;DR: In this paper, an increase of plasma density observed during long pulse operation was reported. This behavior correlated with oxygen and hydrogen plasma density increase is attributed to water desorption induced by wall heating due to the high radiated energy of the plasma.
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Studies in JET divertors of varied geometry. I: Non-seeded plasma operation
L. D. Horton,G. Vlases,Philip Andrew,V.P. Bhatnagar,A. V. Chankin,S. Clement,G. D. Conway,S.J. Davies,J.C.M. de Haas,J.K. Ehrenberg,G. Fishpool,Eric Gauthier,Houyang Guo,P.J. Harbour,L. C. Ingesson,H.J. Jäckel,J. Lingertat,A. Loarte,C.G. Lowry,C. F. Maggi,G. F. Matthews,G.M. McCracken,R. Mohanti,R.D. Monk,Roger Reichle,E. Righi,G. Saibene,R. Sartori,R. Simonini,M.F. Stamp,A. Taroni,K. Thomsen +31 more