Research on ultra high energy particles confinement by the magnetic axis

在Heliotron E上，高能离子的限制是相反的。特别是磁轴偏移效应进行了研究。测试20-27转的高能离子作为中性粒子垂直注入等离子体。这些粒子的行为就像是在螺旋涟漪底部附近被深深捕获的粒子。用两台中性粒子能量分析仪研究了注入高能离子的轨道和损失通量，结果表明：（1）水平分布沿长径方向沿着向内移动了3-5 cm。(2)这种偏移几乎与磁轴偏移和截面形状无关。(3)观察到离最外表面7 cm的大幅度偏离离子。(4)微位移情况下的约束时间最长。

Confinement of high energy ions is inverse on Heliotron E. Especially the magnetic axis shift effects are studied. Test high energy ions of 20-27 rev injected perpendicularly into plasmas as neutral particles. These particles behave as deeply trapped particles near the bottom of the helical ripple. Two neutral particle energy analyzers have been installed to study the orbit and loss flux of the injected energetic ions.The results are as follows : (1) Horizontal distribution along the major radius is found to be shifted inwardly by 3-5 cm. (2) This shift is almost independent of the magnetic axis shift and shaping of the cross section. (3) Largely deviated ions by 7 cm from the outer-most surface are observed. (4) Confinement time for the slightly shifted case is the longest.