Results 21 to 30 of about 150 (75)

Interpretation of Be migration studies at JET and validation of an integrated numerical model for plasma impurity transport and wall composition dynamics [PDF]

, 2010
Fusion experiments with wall cladding of different chemical elements face the problem of material mixing by the plasma-wall interaction. Understanding of experiments that investigate this long term material re-distribution require an iterative approach ...
Brezinsek, S., Esser, H. G., Krieger, K., Stamp, M., Schmid, K., Reinelt, M., Kreter, A.   +6 more
core   +1 more source

Modeling of tungsten impurity transport and distribution in EAST based on multi-fluid and kinetic Monte Carlo simulations

AIP Advances
In recent years, the materials of plasma facing components, such as divertor target plates, domes, and outer walls of tokamaks, such as ASDEX Upgrade, WEST, JET, EAST, and ITER, have been changed from carbon to tungsten because of its lower erosion and ...
Ziyang Wen, YiPing Chen, Ling Zhang
doaj   +1 more source

Comparison of the scrape‐off layer two‐point model for deuterium and helium plasmas in JET ITER‐like wall low‐confinement plasma conditions

Contributions to Plasma Physics, Volume 64, Issue 7-8, August-September 2024.
Abstract The hydrogenic two‐point model (H‐2PM), an analytical model for the scrape‐off layer that predicts a common electron and ion temperature and density along a flux tube from a target temperature and density, is adapted to a single‐species helium (He) model, preserving the 2PM assumptions and analytical nature.
David Rees, Joona Sissonen, Mathias Groth, Vesa‐Pekka Rikala, Henri Kumpulainen, Beth Thomas, Mathias Brix, JET Contributors   +7 more
wiley   +1 more source

Experimental analysis and WallDYN simulations of the global nitrogen migration in ASDEX Upgrade L-mode discharges [PDF]

, 2016
This work presents ASDEX Upgrade experiments, where the nitrogen deposition and re-erosion on divertor manipulator samples and the effect of its transport through the plasma were studied.
Lisgo, S., Lunt, T., Aho-Mantila, Leena, Aho-Mantila, L., Lisgo, S.W., Meisl, G., Krieger, K., Schmid, K., Reimold, F., Oberkofler, M.   +9 more
core   +2 more sources

The role of kinetic effects on the tungsten impurity transport in the boundary plasma of EAST

Nuclear Fusion
A kinetic impurity transport model has been implemented in the Monte-Carlo code DIVIMP to investigate W transport in the boundary plasma of EAST under varied divertor conditions.
Hui Wang, Guoliang Xu, Rui Ding, Hang Si, Guozhang Jia, Jin Guo, Jinheng Zhao, Hai Xie, I.Y. Senichenkov, E.G. Kaveeva, V.A. Rozhansky, Junling Chen   +11 more
doaj   +1 more source

Comparative studies of tungsten erosion and edge transport under partially detached divertor condition of CFETR with neon and argon seedings

Nuclear Materials and Energy
Neon (Ne) and argon (Ar) impurity seedings are recognized as effective techniques for reducing the divertor heat load in high-power operations of future reactors like CFETR.
Hui Wang, Guoliang Xu, Rui Ding, Hang Si, Guozhang Jia, Jin Guo, Jinheng Zhao, Junling Chen   +7 more
doaj   +1 more source

MODELING CREATION OF METHANE AND ITS DERIVATIVES IN THE TOKAMAK EDGE- EFFECT SIMULATION CODE DIVIMP BY [PDF]

, 1999
Cross section and reaction rate coefficients for the creation of Methane (CH 4) and it's derivatives are processed for use in the Monte Carlo simulation code DIVIMP (DIVertor IMPurity).
Supervisor Dr. Peter Stangeby, Adam Mclean   +1 more
core  

DIVIMP Simulations of Global Carbon Transport in ASDEX Upgrade and comparison to measurements [PDF]

, 2010
Makkonen, T., Groth, M., Kurki-Suonio, T., Krieger, K., Aho-Mantila, Leena, Hakola, Antti, Likonen, Jari, Mueller, W.   +7 more
openaire   +2 more sources

Modelling creation and transport of methane and its derivatives in the tokamak edge-effect simulation code DIVIMP [PDF]

, 2003
Integration of creation and transport of methane and its fragments has been carried out in the Monte Carlo simulation code DIVIMP. Hydrocarbon release and breakdown have been shown experimentally to occur in significant quantities in tokamak plasma ...
McLean, Adam
core   +1 more source

Screening of Hydrocarbon Sources in JET [PDF]

, 2001
Carbon is the principal impurity in the Joint European Torus (JET). Methane screening experiments quantify the ability of the scrape-off layer (SOL)/divertor system to ionize carbon and transport it to the divertor, preventing core plasma contamination ...
Matthews, G., Stamp, M. F., Strachan, J. D., Erents, K., Gafert, J., Giroud, C., Charlet, M., McCracken, G., Zastrow, K-D., Philipps, V., Spence, J., Fundamenski, W., von Hellermann, M., Collaborators, and EFDA-JET Work Programme   +13 more
core   +1 more source