直径155mm钪酸盐阴极组件研制  

Investigation of Φ155mm Scandate Cathode-Heater Assembly

作　　者：王辉[1] 于志强[1] 邵文生[1] 杨安民[2] 夏连胜[2] 廉艳强[1] 门燕[1] 李季[1] 

机构地区：[1]北京真空电子技术研究所,北京100015 [2]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《真空电子技术》2013年第3期17-20,共4页Vacuum Electronics

摘　　要：热阴极不仅应用在微波电真空器件中,还可应用到高能电子线性加速器中,这种电子加速器通常需要具有上千安培发射电流的电子源。本文主要介绍了某加速器上的直径155mm钪酸盐热阴极组件的研究过程和初步测试结果。模拟分析和实验结果表明,该热阴极组件具有较好的结构稳定性;热子功率可达3200 W,在1100℃时能提供2690A的脉冲发射电流,电流密度达到14.3A/cm2;同时单脉冲和三脉冲测试都表现出良好的电流稳定性和一致性。：Thermionic dispenser cathode has been applied in VEDs and LINAC. The electron source for LINAC must have emission current more than one thousand Ampere. This paper introduced the investiga- tion of the q^155 mm scandate cathode assembly. The simulation and experiment results indicated that the structure was reliable and the power of the heater was more than 3200 W. The total pulsed current deliv- ered was approximate 2690 A, and the current density was 14.3 A/cmz at the operating temperature of a- bout ll00＊C Moreover, the wave form of the single and three-pulse showed excellent emission current sta- bility and consistency.

关 键 词：钪酸盐 热阴极 模拟分析 电子发射 脉冲电流 

分 类 号：TN133[电子电信—物理电子学]