电子束离子阱(Electron Beam Ion Trap,EBIT)是一种用于研究高电离态离子物理过程的实验装置.中能段紧凑型EBIT实验平台能够产生30 keV的电子束能量,电子束流达到20 mA,对于研究未来聚变堆杂质离子输运行为研究具有重要意义.为了产生单一高电荷态离子,中能段EBIT装置阱区需要工作在超高真空(10-8 Pa)环境下.低温超导磁体需工作在10-5 Pa真空环境下以维持超导状态,因此真空度直接影响着中能段EBIT的工作性能,有必要研制一套稳定高效的真空控制系统以提升中能段EBIT装置稳定性与可靠性.文章基于RS485总线结构和Python编程语言开发了一套中能段EBIT真空控制系统,实现了对中能段EBIT真空系统的远程控制、数据采集和系统联锁保护.可为中能段EBIT装置提供稳定可靠的超高真空的实验环境,对中能段EBIT装置的稳态运行具有重要意义.
Abstract
The Electron Beam Ion Trap(EBIT)is an experimental device used to study the physics of highly ionized ions.The intermediate-energy compact EBIT experimental platform can generate an electron beam energy of 30 keV with an electron beam current of up to 20 mA.It is of great importance to study the impurity spectra in future fusion reactors.To produce a single high charge state ion,the trapping area of the intermediate energy EBIT device needs to be kept under an ultra-high vacuum(108 Pa)condition.Besides,the low-temperature supercon-ducting magnet also needs to operate under a vacuum environment of 10-5 Pa to maintain a sufficiently high heat resistance.Therefore,the vacuum condition directly affects the performance of the intermediate energy EBIT device.It is necessary to develop a stable and efficient vacuum control system to improve the stability and reliability of the device.In this study,an intermediate energy EBIT vacuum control system is developed on the basis of the RS485 bus structure and the Python programming language,which realizes remote control,data acquisition,and interlock protection for the EBIT vacuum system.Currently,this vacuum control system has been running reliably on the intermediate energy EBIT system for several months.The development of the vacuum control system for the EBIT can meet experimental requirements,providing a reliable ultra-high vacuum experimental environment for the intermediate energy EBIT system.This study is of great significance for the steady-state operation of the intermediate energy EBIT system.
关键词
电子束离子阱/真空控制系统/RS485/Python
Key words
Electron beam ion trap/Vacuum control system/RS485/Python
维普
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