Three-dimensional modeling of sputtered materials transport in diagnostic ducts of fusion devices. (1st December 2022)

• Record Type: Journal Article
• Authors: Babinov, N.A.; Razdobarin, A.G.; Bukreev, I.M.; Kirilenko, D.A.; Lyullin, Z.G.; Mukhin, E.E.; Sitnikova, A.A.; Varshavchik, L.A.; Zatylkin, P.A.; Putrik, A.; Klimov, N.S.; Kovalenko, D.V.; Zhitlukhin, A.M.; Morgan, T.; Brons, S.; De Temmerman, G.; Serenkov, I.T.; Sakharov, V.I.; Bulovich, S.V.; Gorodetsky, A.E.; Zalavutdinov, R.Kh.
• Is Part Of: Nuclear fusion. Volume 62:Number 12(2022)
• Publication Date: 2022-12-01
• Subjects: plasma–surface interaction -- in-vessel optics -- Monte Carlo -- fluid dynamics -- linear plasma devices; Nuclear fusion -- Periodicals; 621.48405
• DOI: 10.1088/1741-4326/ac8b1f
• Languages: English
• ISSNs: 0029-5515

Abstract

Abstract: Migration of plasma erosion products in plasma facilities is studied experimentally and numerically within the framework of modeling transport of plasma-facing materials in the diagnostic ducts of fusion devices. Material transport simulation is discussed for two cases of low and high background neutral gas pressures. Monte Carlo software KITe was used to simulate transport at a neutral gas background pressure 0.1–0.5 Pa—typical during steady-state tokamak operation and during pressure pulses caused by edge localized modes (ELMs). The simulation approach was implemented to describe experiments at the MAGNUM-PSI facility. Fluid dynamic code FLUENT is used to simulate transport during pressure surges as high as 1000 Pa, which can occur in the case of severe disruptions in tokamak plasma discharges, such as vertical displacement events (VDE) or accidental events. The hydrodynamic approach was verified in simulation of target sputtering in the QSPA plasma gun facility.