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LOCATION:Room 5.0B56
DTSTART;TZID=Europe/Stockholm:20250616T153000
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UID:submissions.pasc-conference.org_PASC25_sess116_msa192@linklings.com
SUMMARY:Modeling the Edge Physics of Magnetic Fusion Devices in a Tungsten
  Environment
DESCRIPTION:Julien Dominski (Princeton Plasma Physics Laboratory); M. O'Mu
 llane (UKAEA); CS Chang, T. Barbui, L.F. Delgado, R. Hager, and Seung-Hoe 
 Ku (Princeton Plasma Physics Laboratory); P. Manas, P. Maget, and J. Moral
 es (CEA); F. Parra-Diaz (Princeton Plasma Physics Laboratory); A. Scheinbe
 rg (Jubilee Development); A. Kallenbach (IPP); and E. Viezzer (University 
 of Seville)\n\nThe construction of the ITER tokamak is motivating a whole 
 field of research concerning the influence of the tungsten wall on the fus
 ion plasma efficiency. Tungsten ions are sputtered from the plasma facing 
 components and contaminate the plasma where they radiate a significant amo
 unt of its energy. This can lead to a radiative collapse, as observed in t
 he WEST tokamak. Understanding this physics requires modeling the differen
 t  ionization states and radiation levels of each species in the fusion de
 vice. Atomic interactions calculations, such as ionization and recombinati
 on, provides this information but the delta-f or total-f modeling of all t
 he ionization states of the different impurity species is still out of com
 putational capabilities, even on exascale supercomputers. Instead we intro
 duced a bundling technique that regroups ions of similar charge together w
 hile accounting for their bundled atomic physics. This bundling technique 
 has been implemented in a modular way to be integrated in different transp
 ort codes. Application to the WEST and ASDEX-U tokamak with the neoclassic
 al transport code FACIT and with the 5D gyrokinetic code XGC will be prese
 nted. This includes the whole device simulation of ASDEX-U plasma with mul
 tiple low-Z impurities and bundles of tungsten ions.\n\nDomain: Physics, C
 omputational Methods and Applied Mathematics\n\nSession Chair: Stephan Bru
 nner (EPFL)\n\n
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