Plasma simulation of hot-surface-microwave hybrid ion sources. (1st June 2022)

• Record Type: Journal Article
• Authors: Zhang, A.L.; Peng, S.X.; Wu, W.B.; Ma, T.H.; Cui, B.J.; Jiang, Y.X.; Li, K.; Zhang, J.F.; Zhang, T.; Wen, J.M.; Xu, Y.; Guo, Z.Y.; Chen, J.E.
• Is Part Of: Journal of instrumentation. Volume 17:Number 6(2022)
• Publication Date: 2022-06-01
• Subjects: Accelerator Applications -- Accelerator modelling and simulations (multi-particle dynamics, single-particle dynamics) -- Accelerator Subsystems and Technologies -- Ion sources (positive ions, negative ions, electron cyclotron resonance (ECR), electron beam (EBIS)); Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/17/06/P06032
• Languages: English
• ISSNs: 1748-0221

Abstract

Abstract: To generate high-current hard-to-ionize elements such as B +, a hybrid ion source that combines electron cyclotron resonance and thermal surface ionization, which is called a high-temperature surface microwave source (HSMS), is under development. A high-temperature hot surface (2000°) and microwave heating are the essential components of an HSMS to produce high-energy electrons for B + generation. A helical tungsten filament is used in the HSMS source to obtain a high temperature and provide an axial configuration with a magnetic field of approximately 87.5 mT for the 2.45 GHz electron cyclotron resonance (ECR). The effects of high-temperature surface ionization and ECR ionization were separately evaluated. The magnetic field configuration, microwave power, and air pressure have been studied through this plasma model. A 30% B + improvement was achieved.