强激光与粒子束2013，Vol.25Issue(z1)：145-148,4.
光阴极直流高压电子枪工程设计
Engineering design of photoemission DC high voltage electron gun
摘要
Abstract
A key technology issue of high-average-power free-electron laser (FEL) is the demonstration of stable,reliable,high-brightness,high-power electron source operation.The photocathode DC high voltage electron gun requires extreme-heightvacuum and more than 250 kV operating voltage.The vacuum vessel is a high conductance design,and the pump ability of NEG's can act well.To realize high voltage operating stability,the electrode system introduces a middle-potential electrode and the electric field strength can be depressed to 70 percent on the cathode support tube surface.Based on the design thoughts,the vacuum has been up to less than 5 × 10-9 Pa and the operating voltage reaches 300 kV without abnormity.In this report,we concentrate on the description of considerations for engineering design and some details of the photo-DC-Gun that have been proven fitting in practice.关键词
高平均功率太赫兹自由电子激光/光阴极/直流高压电子枪Key words
high average power FEL-THz/ photocathode/ DC high voltage electron gun分类
能源科技引用本文复制引用
王汉斌,杨兴繁,潘清,黎明..光阴极直流高压电子枪工程设计[J].强激光与粒子束,2013,25(z1):145-148,4.基金项目
科技部国家重大科学仪器设备开发项目 （）
