强激光与粒子束2025，Vol.37Issue(4)：78-85,8.DOI:10.11884/HPLPB202537.240286
用于花瓣形加速器的栅控电子枪研制
Development of grid-controlled electron gun for Rhodotron
摘要
Abstract
The Rhodotron is a compact and highly efficient accelerator.This accelerator requires an electron gun with high repetition frequency,short pulses and low emittance,to ensure optimal acceleration performance.This paper shows the physical design,simulation,prototype development and beam testing of such an electron gun.The electron gun is designed as a grid-controlled electron gun based on a barium-tungsten thermionic cathode.The electron gun adopts a Pierce structure.It has a cathode voltage of-40 kV,an operating repetition frequency of 10.75 MHz,a design emission current of 200 mA maximum,and a single minimum pulse length of 3 ns.In the actual test,the electron gun measured a peak emission current of 204 mA with the cathode heater operating at 0.95 A/6.7 V,loaded cathode DC voltage-40 kV,and gate control voltage 290 V/10 MHz.When the beam pulse length is 2.7 ns,the beam current amplitude is 39.2 mA,and the actual beam emittance is less than 2 mm mrad.This result meets the design and accelerator application requirements.关键词
花瓣型加速器/电子枪/栅控/热阴极/束流测试/发射度Key words
Rhodotron/electron gun/grid-controlled/thermionic cathode/beam test/emittance分类
物理学引用本文复制引用
秦臻,黄刚,何小中,刘平,李晨,唐若,赵伟,陈欣,杨洁,向军,李天涛..用于花瓣形加速器的栅控电子枪研制[J].强激光与粒子束,2025,37(4):78-85,8.基金项目
国家自然科学基金项目(12005209、12205280) （12005209、12205280）
