摘要
为发展结构更加紧凑的小型医用电子直线加速器，开展了Ｘ波段驻波电子直线加速结构的研究。设计制造了一只工作频率为９３１６ＭＨｚ、管长约１５ｃｍ的２ＭｅＶ全密封轴耦合驻波电子直线加速管。热测出束实验馈入０．６８ＭＷ微波功率，负角注入１７ｋｅＶ电子束，获得脉冲流强＞９０ｍＡ、俘获效率好于３０％、能量达２．４ＭｅＶ的电子束流。未用任何外聚焦磁场，出口束靶点直径＜０．７ｍｍ。
An X band, on axis, standing wave electron accelerating structure operated in the π/2 mode and 9300 MHz, was developed and tested. A prototype 150 mm long structure was machined, brazed and sealed, and the experimental data of the cold tests and beam tests are presented. The phase focusing technique is used. The electron beam focal spot size is less than 0.7 mm without any external magnetic focusing devices and the pulsed beam current is more than 90 mA with 0.68 MW input RF power. An injection voltage of 17 kV is used with a converging injection beam. The capture efficiency is more than 30 % and the energy is higher than 2.4 MeV.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1999年第2期189-192,共4页
Atomic Energy Science and Technology
基金
国家自然科学基金
