Modernization of electron accelerator with a large cross section beam for radiation effects on materials

7th International Conference Radiation-thermal Effects and Processes in Inorganic Materials

材料科学;物理学

Vorobyov, M.S.^1 ; Denisov, V.V.^1 ; Koval, N.N.^1,2 ; Sulakshin, S.A.^1 ; Shugurov, V.V.^1 ; Yakovlev, V.V.^1

Institute of High Current Electronics SB RAS, Tomsk, Russia^1

National Research Tomsk Polytechnic University, Tomsk, Russia^2

关键词: Accelerating voltages;    Continuous operation;    High current beams;    Large cross-sections;    Low pressure arc;    Pulse durations;    Repetitively pulsed mode;    Weak correlation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/168/1/012035/pdf
DOI  :  10.1088/1757-899X/168/1/012035

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The results of the work on the creation of an automated wide-aperture electron accelerator with a grid plasma cathode based on the low-pressure arc discharge and outputting of a large section beam (750×150 mm) in the atmosphere through a outlet foil window. The distinctive feature of such electron accelerator is a weak correlation of beam parameters, as well as a high current beam extraction efficiency to air, reaching ≈ (80 ± 90)% of the current in the accelerating gap at an accelerating voltage of 200 kV, beam current amplitude in the atmosphere up to 30A, frequency and pulse duration up to 50 s-1and 100 μs, respectively. The electron source provides a stable continuous operation for tens of hours in a repetitively pulsed modes at the maximum average beam power in the atmosphere is ≈5 kW. Examples of applications of such accelerator in the radiation-stimulated technology are given, showing the prospects of its using in scientific and technological purposes.