Integrated operating realization to achieve 2 MW negative ion beam acceleration on CRAFT NNBI facility

作者：Lizhen Liang, Jianglong Wei, Yongjian Xu, Wei Liu, Yahong Xie, Yuming Gu, Zhengkun CAO (曹正坤), Yuwen YANG (杨宇雯), Yufan LI (李玉凡), Shengmin Pan, Bin GUO (郭斌), Zhigang ZHU (朱志刚), Xiancai MENG (孟献才), Xufeng PENG (彭旭峰), Chundong 纯栋 HU 胡 · 发表于：Plasma Science and Technology · 年份：2025 · DOI：10.1088/2058-6272/ae14a8 · 被引用次数：4 · 研究领域：Particle accelerators and beam dynamics、Plasma Diagnostics and Applications

Abstract The Comprehensive Research Facility for Fusion Technology (CRAFT) integrates various testing and demonstration facilities aimed at developing critical technologies and components for magnetic confinement fusion reactor. Among them, the CRAFT Negative Ion Source Neutral Beam Injection (CRAFT NNBI) facility has initially been completed. In the third experimental campaign on the CRAFT NNBI facility, negative ion beam acceleration reached a new record: MW-level power was sustained for 120 s with a beam current of 11.7 A at 200.3 keV. The negative ion beam was extracted from the dual-driver radio frequency (RF) negative ion source with a total RF power of 65 kW and cesium (Cs) vapor was injected from the upper and lower lateral walls. These results provide further support for the subsequent experiments on the CRAFT NNBI facility.