Page 20 - Jet Outflow and Open Field Line Measurements on C-2U Device
P. 20
Global Transport and Profile Evolution
Q2D Simulation of C-2U Discharge
• Q2D (Onofri, Dettrick, Barnes)
• Based on 2D (r,z) LamyRidge XMHD code
• Fluid plasma and fluid neutral species
• Kinetic fast ions from NB injection
• Interaction with neutrals important
• Self-consistent warm neutral cloud from NBI
• Wall recycling coefficient R~1
• CX loss of fast ions; plasma fueling
• Brings total pressure and density in line with experiment
• Q2D run on C-2U using transport coefficients calibrated on C-2
• Gives decent agreement on profile evolution
• NBI extends plasma lifetime by factor ~ 5
• Q2D “virtual FRC”
• Used to study many hardware changes on C-2U
Privileged and Confidential
20
