Initial plasma results from the electric tokamak

摘要

The Electric Tokamak, a low field ITER sized device with R=5 m, has been operating with well equilibrated clean plasmas since January 2000. Short, 0.9 s, discharges with a central energy confinement time τ_e(0)=150 ms are now routinely obtained at a toroidal field B=0.1 T with kT_e, kT_I≈120eV. The discharges are feedback controlled in up/down position and in plasma current. Biased electrode driven H modes have been obtained that compare well with the results obtained on CCT by R.J. Taylor and align with the 'neoclassical bifurcation' theory of K.C. Shaing.