Interpretation of divertor Langmuir probe measurements during the ELMs at JET
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TLDR
Results indicate that the probes under certain conditions, e.g. during ELMs, can significantly under/over estimate the electron temperature.About:
This article is published in Journal of Nuclear Materials.The article was published on 2011-08-01 and is currently open access. It has received 45 citations till now. The article focuses on the topics: Langmuir probe & Jet (fluid).read more
Citations
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Journal ArticleDOI
Physics of ultimate detachment of a tokamak divertor plasma
TL;DR: In this paper, the basic physics of the processes playing the most important role in divertor plasma detachment is reviewed, and the models used in the two-dimensional edge plasma transport codes that are widely used to address different issues of the edge plasma physics and to simulate the experimental data, as well as the numerical schemes and convergence issues, are described.
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
Analysis of wall-embedded Langmuir probe signals in different conditions on the Tokamak à Configuration Variable.
TL;DR: This paper presents the current wall-embedded Langmuir probe system installed on the Tokamak à Configuration Variable (TCV), as well as the analysis tool chain used to interpret the current-voltage characteristic obtained when the probes are operated in swept-bias conditions, based on a four-parameter fit combined with a minimum temperature approach.
Journal ArticleDOI
Ion target impact energy during Type I edge localized modes in JET ITER-like Wall
C. Guillemaut,A. Jardin,J. Horacek,A. Autricque,G. Arnoux,J. E. Boom,S. Brezinsek,J. W. Coenen,E. de la Luna,Stéphane Devaux,T. Eich,C. Giroud,D. Harting,A. Kirschner,Bruce Lipschultz,G. F. Matthews,David Moulton,M. G. O'Mullane,M.F. Stamp +18 more
TL;DR: In this paper, coupled infrared thermography and Langmuir Probe (LP) measurements in JET-ITER-like-wall unseeded H-mode experiments with ITER relevant ELM energy drop have been used to estimate the impact energy of deuterium ions (D+) on the divertor target.
Journal ArticleDOI
Simulation of gross and net erosion of high-Z materials in the DIII-D divertor
Rui Ding,Rui Ding,Rui Ding,P.C. Stangeby,D.L. Rudakov,J.D. Elder,David Tskhakaya,David Tskhakaya,William R. Wampler,A. Kirschner,Adam McLean,Houyang Guo,Houyang Guo,Vincent Chan,P. B. Snyder +14 more
TL;DR: In this paper, the three-dimensional Monte Carlo code ERO has been used to simulate dedicated DIII-D experiments in which Mo and W samples with different sizes were exposed to controlled and well-diagnosed divertor plasma conditions to measure the gross and net erosion rates.
References
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Journal ArticleDOI
Electric probes for plasmas: The link between theory and instrument
TL;DR: In this article, a review of electric probe methods for diagnostics of plasmas is presented with emphasis on the link between the appropriate probe theories and the instrumental design, and a systematic classification of various regimes of probe operation and a summary of theories and methods for measurements of charged particle distributions.
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A problem in the interpretation of tokamak Langmuir probes when a fast electron component is present
TL;DR: In this paper, it was shown that the value of Te extracted from the Langmuir probe characteristic in this way yields Teh, unless the hot component is extremely small, which may also be relevant to observations of very low sheath heat transmission coefficients in tokamaks.
Journal ArticleDOI
ELM transport in the JET scrape-off layer
R.A. Pitts,P. Andrew,G. Arnoux,T. Eich,W. Fundamenski,A. Huber,Carlos A. Silva,David Tskhakaya,Jet-Efda Contributors +8 more
TL;DR: In this article, a transient model of ELM filament energy evolution has been developed at JET and is able to reproduce a number of experimental observations, including the high ion energies observed in the far scrape-off layer (SOL) using an electrostatic retarding field electrostatic analyser (RFA).
Journal ArticleDOI
Stationary and Transient Divertor Heat Flux Profiles and Extrapolation to ITER
A. Herrmann,T. Eich,S. Jachmich,Martin Laux,P. Andrew,A. Bergmann,A. Loarte,G. Matthews,J. Neuhauser +8 more
TL;DR: In this paper, a broadening of the heat flux profiles, a constant profile width, as well as a steepening with heating power are found for different data sets, for different types of ELMs.
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.