Start-Up of Spherical Torus by ECH without Central Solenoid in the LATE Device

概要

論文の詳細を見る
Spherical torus plasma is started-up by electron cyclotron heating alone without Ohmic heating in the LATE (Low Aspect ratio Torus Experiment) device. By injecting a 2.45GHz microwave pulse up to 10kW for 4 seconds, a plasma current is initiated and ramped up to I_p≃4kA by adjusting the external vertical field for the equilibrium of the plasma loop. Magnetic measurements show that the last closed flux surface has an aspect ratio of A〜1.4 and an elongation of K〜1.3. The line-averaged electron density is 1.3×10^<11>cm^<-3> which is almost twice the plasma cutoff density, suggesting that electron cyclotron heating by mode-converted electron Bernstein waves may take place.
社団法人プラズマ・核融合学会の論文
2004-02-25