Program‎ > ‎Science Groups‎ > ‎Boundary Science‎ > ‎

Materials and Plasma Facing Components TSG

Mike Jaworski
Charles Skinner
 Theory / Modelling Brian Wirth
 University Representative Jean-Paul Allain
Email TSG Leaders

Overall TSG objective:  Perform comparative assessment of high-Z and liquid metal PFCs

Thrust 1 - Understand lithium surface-science for long-pulse PFCs
  • Assess impact of more complete Li coverage
  • Use the new Material Analysis and Particle Probe (MAPP) and laboratory studies to link tokamak performance to PFC surface composition
Thrust 2 - Unravel the physics of tokamak-induced material migration and evolution
  • Confirm erosion scalings and evaluate extrapolations
  • Determine migration patterns to optimize technical solution
Thrust 3 - Establish the science of continuous vapor-shielding
  • Determine the existence and viability of stable, vapor-shielded divertor configurations
  • Determine core compatibility and extrapolations for extended durations and next-step devices
Primary Related Programmatic Milestones 
ITPA Participation:
  • PEP-26 Critical edge parameters for achieving L-H transition
  • PEP-28 Physics of H-mode access with different X-point height
  • PEP-29 Vertical jolts/kicks for ELM triggering and control
  • PEP-30 ELM control by pellet pacing in ITER-like plasma conditions and consequences for plasma confinement
  • PEP-31 Pedestal structure and edge relaxation mechanisms in I-mode
  • PEP-37 Effect of low-Z impurity on pedestal and global confinement