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B2.5-Eunomia simulations of Pilot-PSI plasmas

2013; Elsevier BV; Volume: 438; Linguagem: Inglês

10.1016/j.jnucmat.2013.01.135

1873-4820

R. C. Wieggers, D. Coster, P.W.C. Groen, H.J. de Blank, W. J. Goedheer,

Plasma Diagnostics and Applications

The B2.5-Eunomia code is used to simulate the plasma and neutral species in and around a Pilot-PSI plasma beam.B2.5, part of the SOLPS5.0code package, is a multi-fluid plasma code for the scrape-off layer.Eunomia is a newly developed non-linear Monte Carlo transport code that solves the neutral equilibrium, given a background plasma.Eunomia is developed to simulate the relevant neutral species in Pilot-PSI and Magnum-PSI, linear devices that study plasma surface interactions in conditions expected in the ITER divertor.Results show the influence of the neutral species on the Pilot-PSI plasma beam.We show that a fluid description for the neutrals is not sufficient and Eunomia is needed to describe Pilot-PSI.The treatment of individual vibrational states of molecular hydrogen as separate species is crucial to match the experiment.