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离子源是强流质子回旋加速器的核心设备之一,它的性能指标对最终束流大小和质量都有重大影响.文章介绍了一种运用于强流质子回旋加速器上的多峰场负氢离子源的设计与加工情况,该离子源主要是通过深入研究高密度等离子体产生技术、长寿命大直流灯丝电子发射技术、磁约束技术、虚拟过虑技术、残留气体与电子剥离的控制技术,以及离子引出技术等,在中国原子能科学研究院原有10mA离子源基础上建立负氢离子源,实验研究低能、强流束的实验匹配与调试技术,将平均引出束流提高到15—20mA.
The ion source is one of the core devices of the high-flux proton cyclotron and its performance index has a great influence on the size and quality of the final beam.The article introduces a multimodal field negative hydrogen ion used in the strong-flow proton cyclotron Source of the design and processing conditions, the ion source is mainly through in-depth study of high-density plasma generation technology, long-life large DC filament electron emission technology, magnetic confinement technology, virtual filter technology, residual gas and electron stripping control technology, and ions The technology of extracting negative ions is established on the basis of the original 10mA ion source of China Institute of Atomic Energy, and the experimental matching and debugging technology of low energy and high current beams is experimentally studied to increase the average outgoing beam current to 15-20mA.