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...
