Tokamak Mirror

By the end of 1977 Tokamak devices had achieved nre values in excess of 1019 m-3 s and ion temperatures of 2-3 keV. In the early summer of 1978, temperatures in excess of 7 keV were achieved in the Princeton large torus, PLT, using auxilary neutral beam heating9). Other confinement systems such as magnetic mirror devices and intertial confinement are also operating currently below the Lawson criterion but there has been continued development and substantial progress is continually being made. 

Among several conceptual designs of fusion reactors, the machines based on magnetic confinement, such as Tokamak- and mirror-type reactors, employ a... 

ITER. This will remain a major difficulty unless experimentally validated in tokamaks with impurities and relevant wall materials to provide a realistic test-bed which would closely mirror options proposed for the next-step device (e.g., beryllium walls and carbon and/or tungsten divertor proposed for ITER). Such experiments would indeed help answer questions including the magnitudes of erosion and tritium co-deposition, dust formation in the vessel, the ease of tritium removal from mixed-materials, as well as operational aspects (e.g., of using beryllium on the first wall). 

This is the tokamak version the mirror version is on the same schedule, offset 4 years into the future. 

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