Java und LonWorks — von der Fernsteuerung zur Visualisierung

Reiter, Heinrich; Carotta, Marcus

doi:10.1007/978-3-7091-6881-3_28

Cited by 2 publications

(2 citation statements)

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“…These neutral particle codes use either a Monte Carlo technique (e.g. DEGAS [733,828], DEGAS 2 [829], EIRENE [830,831], NIMBUS [832]) or a fluid prescription [833]. The Monte Carlo technique, essentially a kinetic calculation, is technically more appropriate for tokamak boundaries, but can be computationally demanding in comparison to fluid calculations.…”

Section: Two or Three Dimensional Fluid Modellingmentioning

confidence: 99%

“…Various approaches have been followed to model the interaction of charge exchange neutrals with the wall and divertor. For example, a model for the implantation range, derived from TRIM [882], is used in the code WDIFFUSE [878] to relate the mean energies from an EIRENE [830] analysis to the implantation range for each surface element. In Ref.…”

Section: Refined Wall Modellingmentioning

confidence: 99%

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Plasma-material interactions in current tokamaks and their implications for next step fusion reactors

et al. 2001

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The major increase in discharge duration and plasma energy in a next step DT fusion reactor will give rise to important plasma-material effects that will critically influence its operation, safety and performance. Erosion will increase to a scale of several centimetres from being barely measurable at a micron scale in today's tokamaks. Tritium co-deposited with carbon will strongly affect the operation of machines with carbon plasma facing components. Controlling plasma-wall interactions is critical to achieving high performance in present day tokamaks, and this is likely to continue to be the case in the approach to practical fusion reactors. Recognition of the important consequences of these phenomena stimulated an internationally co-ordinated effort in the field of plasma-surface interactions supporting the Engineering Design Activities of the International Thermonuclear Experimental Reactor project (ITER), and significant progress has been made in better understanding these issues. The paper reviews 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. Two main topical groups of interaction are considered: (i) erosion/redeposition from plasma sputtering and disruptions, including dust and flake generation and (ii) tritium retention and removal. The use of modelling tools to interpret the experimental results and make projections for conditions expected in future devices is explained. Outstanding technical issues and specific recommendations on potential R&D avenues for their resolution are presented.

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