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DTSTAMP:20220812T074335Z
LOCATION:Darwin Room
DTSTART;TZID=Europe/Stockholm:20220629T120000
DTEND;TZID=Europe/Stockholm:20220629T123000
UID:submissions.pasc-conference.org_PASC22_sess152_msa132@linklings.com
SUMMARY:Gyrokinetic Global Simulations of Burning Plasmas
DESCRIPTION:Minisymposium\n\nGyrokinetic Global Simulations of Burning Pla
 smas\n\nMishchenko, Bottino, Hayward-Schneider, Poli, Wang...\n\nThe creat
 ion and control of burning plasmas is an ultimate goal of magnetic fusion 
 world-wide efforts. One of the characteristic features of such plasmas is 
 the intrinsic richness of their physics featuring complex couplings and in
 teractions of microscopic turbulence with macroscopic MHD and Alfvén modes
 . In burning plasmas, such couplings may become especially strong since fa
 st particles are abundant and can drive the macroscopic modes unstable. A 
 global approach is needed to assess the physics combining the macroscopic 
 modes and turbulence. The global gyrokinetic particle-in-cell codes ORB5 a
 nd EUTERPE have been used to simulate the electromagnetic turbulence in th
 e toroidal geometries of axisymmetric tokamaks and the more general stella
 rators. The so-called ITG-KBM transition has been identified and the relax
 ation of the profiles has been observed in a circular cross-section tokama
 k plasma and in the ASDEX-Upgrade geometry. The multiscale physics has bee
 n addressed, showing the coupling of electromagnetic turbulence to the col
 lisionless tearing instability and Alfvén modes destabilized by fast ions.
  Electromagnetic turbulence has also been addressed in the stellarator Wen
 delstein 7-X geometry. It has been demonstrated that such simulations are 
 possible using existing global gyrokinetic particle-in-cell codes on the H
 PC systems already available via PRACE.\n\nDomain: Computer Science and Ap
 plied Mathematics, Physics
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