摘要
中立横梁注射者(NBI ) 使用了的大尺寸氢象质子来源(PNBI ) 一样的否定离子来源(NNBI ) 为大螺旋状的设备(LHD ) 被开发。从 NNBI 和 PNBI 的注射力量分别地到达了 16 MW 和 6.8 MW。这些注射力量超过了名字的横梁力量。射出横梁的氢的一个诊断系统可见光谱沿着横梁注射轴被安装了在 PNBI 上估计精力部分。完整的精力横梁部件关于等价于 70% 注射横梁力量的一半。中立横梁也是的高精力的变细在 NNBI 上观察了。山峰密度分发是有效的增加横梁免职力量。
Large size hydrogen neutral beam injectors （NBI） used a negative ion source （NNBI） as well as a proton source （PNBI） were developed for the large helical device （LHD）. The injected power from NNBI and PNBI have reached 16 MW and 6.8 MW, respectively, These injected powers have outstripped the nominal beam powers. A diagnostic system of beam-emitted hydrogen visible spectrum has been installed along the beam injection axis to estimate the energy fraction on PNBI. The full energy beam component is about half which is equivalent to 70% of injected beam power. The attenuation of high energy neutral beam is also observed on NNBI. The peak density distribution is effective to increase beam deposition power.
基金
the budget for NIFS08ULBB501 of Japan
the JSPS-CAS Core-University program in the field of Plasma and Nuclear Fusion
