DEUTERIUM-TRITIUM TFTR PLASMAS IN THE HIGH POLOIDAL BETA REGIME

摘要

Deuterium-tritium plasmas with enhanced energy confinement and stability have been produced in the high poloidal beta, advanced tokamak regime in TFTR. Confinement enhancement H ≡ Γ_E/Γ_(E ITER-89P)> 4 has been obtained in a limiter H-mode configuration at moderate plasma current Ip = 0.85 - 1.46 MA. By peaking the plasma current profile, β_(N dia)≡ 10~8<β_(t⊥) >aB_0/I_p = 3 has been obtained in these plasmas, exceeding the β_N limit for TFTR plasmas with lower internal inductance, l_i, Fusion power exceeding 6.7 MW with a fusion power gain Q_(DT) = 0.22 has been produced with reduced alpha particle first orbit loss provided by the increased l_i.