From Tokamaks to Toga device with 24/7-Creeping Liquid Lithium plasma environment, Best Possible Confiment regime, and eliminated PSI

Two recent (2021, 2023) DT campaigns on JET tokamak (Culham, UK) made it evident that the presently dominant high recycling approach is not suitable for magnetic fusion. In contrast, in Dec. 1998, with Sergei Krasheninnikov we formulated a new Lithium Wall Fusion (LiWF) concept of magnetic fusion which combines plasma pumping by lithium layer and NBI fueling right to the plasma core. This concept addressed two root reasons of the current setback of magnetic fusion with the breakeven amplification factor Q=1: (a) plasma edge cooling by recycling and (b) very complicated Plasma Surface Interactions, both linked to plasma disruptions in tokamaks. The development of LiWF concept resulted in TOGA invention (USPTO patent pending 63/833, 6/24), the tokamak upgrade by an additional lower vacuum chamber for removing heat and evaporated lithium from the actively cooled heat sinks. No one existing tokamak can be transformed to toga without redesigning its vacuum vessel. The presentation explains the Toga plasma regimes, 24/7-Creeping Liquid Lithium environment technology and expected performance of NSTX/DIII-D/JET, would they be upgraded to togas, on the way to generation of design data for He ash pumping toward the ignition in the burning DT plasma. The recently discovered Li doping effect on LTX (PPPL, Princeton) opens the opportunities for the middle size machines to contribute to toga development using the burning plasma relevant 60/120 keV H/D NBI without fear of the shine through.