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PEPSC Plan for Self-consistent Simulations of Fast Ion Transport with Source and Sink

PEPSC Plan for Self-consistent Simulations of Fast Ion Transport with Source and Sink. Guoyong Fu Princeton Plasma Physics Laboratory. Plasma Energetic Particle Simulation Center ( PEPSC ).

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PEPSC Plan for Self-consistent Simulations of Fast Ion Transport with Source and Sink

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  1. PEPSC Plan for Self-consistent Simulations of Fast Ion Transport with Source and Sink Guoyong Fu Princeton Plasma Physics Laboratory

  2. Plasma Energetic Particle Simulation Center (PEPSC) • PEPSC is an advanced simulation center for energetic particle-driven instabilities and energetic particle transport. • PEPSC Team PPPL: Guoyong Fu (PI), Stephane Ethier, Nikolai Gorelenkov, Jianying Lang, and Ravi Samtaney IFS: Herbert Berk (Co-PI), Boris Breizman, James Van Dam and Eugene Chen Univ. Colorado: Yang Chen (Co-PI), Scott Parker ORNL: Scott Klasky (Co-PI)

  3. PEPSC Plan (2008 – 2011) • Upgrade M3D-K code: extension to 3D domain decomposition for particles; add source and sink. (done!) • Build a new gyrokinetic/MHD hybrid code GKM (start from M3D-K) that uses gyrokinetic closure to include kinetic effects of thermal ions as well as energetic particles. • Implement advanced numerical methods: nonlinear implicit method, high-order finite elements, and workflow method. Also, optimize code speed. • Explore reduced models for comparison with GKM. • Apply codes to experiments for code validation and physics understanding. • Apply GKM to ITER for simulations of alpha particle-driven high-n TAEs.

  4. M3D-K simulations of fast ion-driven TAE with source and sink Jianying Lang slowing-down rate = no slowing-down slowing-down rate = Pitch angle Scattering rate

  5. Integrated Simulation with GKM + TRANSP Use TRANSP to evolve plasma equilibrium including NBI source; Use GKM to evolve fast ion distribution in the presence of Alfven modes. fNBI NBI source equilibrium TRANSP GKM TRANSP Because of time scale separation (i.e., mode saturation time << plasma confinement time), the equilibrium evolution and mode evolution can be computed sequentially.

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