Effects on ct injector acceleration electrode configuration on tokamak penetration

摘要

Through compact toroid(CT)injection experiments on the TEXT-U tokamak(with B_T≌10 kG and I_P≌100 kA), it has been shown that the acceleration electrode configuration, partic- Ularly in the vicinity of the toroidal field(TF)coils of the tokamak, has a strong effect on penetration Performance. In initial experiments, premature stopping of CTs within the injector was seen at anoma- Lously low TF strengths. Two modification were found to greatly improve performance:(a)removal Of a section of the inner electrode and(b)increased diameter of the 'drift tube'(which guides the CT Into the tokamak after acceleration).