论文信息 - Status of the ZT-40M RFP experimental program

Status of the ZT-40M RFP experimental program

The present status of research on the ZT-40M Reversed-Field Pinch (RFP) will be described. RFP discharges have been sustained for times (27 ms) >> the classical resistive diffusion time, implying the existence of a flux-sustainment mechanism (''dynamo''). This mechanism opens the possibility for a steady-state RFP reactor utilizing a unique form of non-inductive current drive. T /sub e/ > 500 eV has been obtained for 400 kA discharges with /sup -/n /sub e/ about 4 x 10/sup 19/ m/sup -3/. Total energy confinement time /tau/ /sub E/ has reached 0.7 ms with a Lawson parameter of 5 x 10/sup 16/ m/sup -3/s for discharges with /sup -/n /sub e/ = 8 x 10/sup 19/ m/sup -3/ and T /sub e/ = 330 eV at a plasma current of 330 kA and 0.33 T total confining field at the wall. Reactor-like ..beta..theta about 10-20% is routinely obtained for plasma currents from 60-400 kA (..beta.. about ..beta..theta/2). Scaling of /sup -/n /sub e/ /tau/ /sub E/ about I /sup 2.2+or-0.4/ is found, more than adequate for a compact RFP reactor.

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