CT-6装置上铜壳电流的测量

MEASUREMENTS ON THE SHELL INDUCTIVE CURRENT IN CT-6 TOKAMAK

在托卡马克装置中,导体壳的设置对放电时产生的等离子体起反馈平衡作用。理想导体壳产生的垂直磁场为 其中,Ⅰ为等离子体环电流;R为大半径:α为小半径;β_θ=8πP/Bθα;6为壳半径。 在非理想导体壳(如铜壳、铝壳)情况下,所产生的磁场相对减小。CT-6托卡马克(见图1)的实验中,证实了这种平衡作用的存在。放电时,一旦等离子体产生。

The experiment result shows that the feed back action of the copper shell is very sensitive to the plasma movement. The magnetic field produced by the shell current is equal to one third to one half of the field needed for plasma equilibrium. The copper shell is important for stability and equilibrium of the plasma. The experimental penetration time of magnetic field into the copper shell is correspondent to the theoretical calculation quantity. The experiment proves that the shell made by copper bars can replace the cast or forged shell.