Design of the Prototype Negative Ion Source for Neutral Beam Injector at ASIPP

WEI Jianglong (韦江龙); XIE Yahong (谢亚红); LIANG Lizhen (梁立振); GU Yuming (顾玉明); YI Wei (邑伟); LI Jun (李军); HU Chundong (胡纯栋); XIE Yuanlai (谢远来); JIANG Caichao (蒋才超); TAO Ling (陶玲); SHENG Peng (盛鹏); XU Yongjian (许永建)

doi:10.1088/1009-0630/18/9/13

Plasma Science and Technology > 2016 > 18(9): 954-959. > DOI: 10.1088/1009-0630/18/9/13

WEI Jianglong (韦江龙), XIE Yahong (谢亚红), LIANG Lizhen (梁立振), GU Yuming (顾玉明), YI Wei (邑伟), LI Jun (李军), HU Chundong (胡纯栋), XIE Yuanlai (谢远来), JIANG Caichao (蒋才超), TAO Ling (陶玲), SHENG Peng (盛鹏), XU Yongjian (许永建). Design of the Prototype Negative Ion Source for Neutral Beam Injector at ASIPP[J]. Plasma Science and Technology, 2016, 18(9): 954-959. DOI: 10.1088/1009-0630/18/9/13

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Design of the Prototype Negative Ion Source for Neutral Beam Injector at ASIPP

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

Funds: supported by National Natural Science Foundation of China (Nos. 11505224, 11575240, 11405207), the National Magnetic Confinement Fusion Science Program of China (Nos. 2013GB101001, 2013GB101002, 2013GB101003), International Science and Technology Cooperation Program of China (No. 2014DFG61950), and Foundation of ASIPP (No. DSJJ-14-JC07)

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Received Date: September 10, 2015

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Abstract

Abstract

In order to support the design, manufacture and commissioning of the negative- ion-based neutral beam injection (NBI) system for the Chinese Fusion Engineering Test Reactor (CFETR), the Hefei utility negative ion test equipment with RF source (HUNTER) was proposed at ASIPP. A prototype negative ion source will be developed at first. The main bodies of plasma source and accelerator of the prototype negative ion source are similar to that of the ion source for EAST-NBI. But instead of the filament-arc driver, an RF driver is adopted for the prototype negative ion source to fulfill the requirement of long pulse operation. A cesium seeding system and a magnetic filter are added for enhancing the negative ion density near the plasma grid and minimizing co-extracted electrons. Besides, an ITER-like extraction system is applied inside the accelerator, where the negative ion beam is extracted and accelerated up to 50 kV.
- negative ion source,
- neutral beam injection,
- CFETR

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