High‐Tc superconducting lenses for relativistic electron beams
High‐Tc superconducting lenses for relativistic electron beams
复制标题
用于相对论电子束的高温超导透镜
DOI：
10.1063/1.342789
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
T. Akitsu
中科院分区：
文献类型：
--
作者：
H. Matsuzawa;O. Ohmori;H. Yamazaki;J. Ueno;A. Furumizu;A. Saito;T. Takahashi;T. Akitsu
提出了几种新型相对论电子束聚焦透镜，并给出了初步的实验结果。透镜的原理如下：当REB被注入圆柱形超导透镜的小孔中时，REB的自磁场被完美地限制在REB和透镜壁之间的区域中。REB由那些压缩字段聚焦。超导透镜的优越性使用无箔REB二极管显示，其在0.15 Torr Ne下操作，并且具有由Y-Ba-Cu-O化合物制成的高Tc圆柱形超导体阳极（轴向长度为30和145 mm，内径为20 mm）。聚焦的REB（0.8 kA，270 keV，脉冲宽度小于5 ns）的主光束直径小于2 mm。
New types of focusing lenses for relativistic electron beams (REBs) are proposed, and preliminary experimental results are obtained. The principle of the lenses is as follows: When REBs are injected into the small apertures of cylindrical superconducting lenses, self‐magnetic fields of the REBs are perfectly confined in a region between the REBs and the wall of the lenses. The REBs are focused by those compressed fields. The superiority of superconducting lenses was shown using foilless REB diodes which were operated at 0.15‐Torr Ne and had high‐Tc , cylindrical superconductor anodes made of Y‐Ba‐Cu‐O compounds (axial lengths of 30 and 145 mm and an inner diameter of 20 mm). The focused REBs (0.8 kA, 270 keV, pulse widths of less than 5 ns) had main beam diameters less than 2 mm.