Study of beam quality optimization of diagnostic neutral beam for the HT-7 tokamak

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• 作者：Yahong Xie ; Chundong Hu ; Sheng Liu ; Yuejiang Shi ; Jun Li ; Yuanlai Xie ; Lizhen Liang ; Caichao Jiang ; Zhimin Liu
• 关键词：Ion source ; Ion species ; Proton ratio ; Collision cross-section
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2010
• 出版时间：11 August 2010-21 August 2010
• 年：2010
• 卷：620
• 期：2-3
• 页码：585-588
• 全文大小：467 K

文摘

Proton ratio is the main parameter to characterize diagnosis neutral beam quality, and determined by ion species fraction of plasma in the ion source. The effect of arc discharge on beam quality has been discussed based on the main electron and gas collision cross-sections in the ion source. The operating parameters were optimized to get a high quality beam with the proton ratio of 40 % .