Caichao Jiang

Transient pressure response and thermal instability of an NBI cryopump under loss-of-vacuum conditions

Lunhuan Xia, Y D Xie, Qianxu Wang, Y ZHAO et autres

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Experimental Study on the Threshold of Loss of Vacuum in an NBI Cryopump Under Liquid-Helium Flow-Loss Conditions

Lunhuan Xia, Y D Xie, Qianxu Wang, Y ZHAO et autres

A reduction in liquid-helium supply to an NBI cryopump was simulated on an NBI test platform by adjusting the opening of a liquid-helium control valve, and the response of the vacuum system was investigated. During the experiment, the system remained stable at …

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Design and analysis of a SF6 gas insulating HV-bushing for CRAFT NNBI

Yuchen Qu, Zhimin Liu, Caichao Jiang, Jianglong Wei et autres

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A novel discharge control method for megawatt-level NNBI RF ion sources

Puqiong Yang, Kun Chen, Caichao Jiang, Bo Liu et autres

High-power efficient coupling and high-density negative ion beam extraction are critical challenges urgently requiring solutions for the Radio Frequency (RF) driven Negative ion based Neutral Beam Injection (NNBI) systems. To improve the power transfer efficiency of the RF ion source power supply …

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Electrostatic and structural design analysis of CRAFT NNBI high voltage deck

Wei Hu, Caichao Jiang, Zhimin Liu, Shiyong Chen et autres

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A coupled NBI-EC model in investigating the assistant effect on the current ramp-up in EAST

Hongcan Liu, Qianhong Huang, Ji Wang, Xueyu Gong et autres

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Research on the distributed capacitance for high-voltage key components on CRAFT NNBI

Бо Лю, Zhimin Liu, Caichao Jiang, Sheng Liu et autres

Abstract The negative ion based neutral beam injector (NNBI) with a beam energy of 400 keV is one of the subsystems at the Comprehensive Research fAcility for Fusion Technology (CRAFT) in China. The distributed capacitance of the high-voltage components is an important …

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The passive core snubber based on Fe-based amorphous alloy for −400 kV negative ion based neutral beam injector of comprehensive research facility for fusion technology

Bo Liu, Zhimin Liu, Caichao Jiang, Sheng Liu et autres

Comprehensive Research Facility for Fusion Technology (CRAFT) is a technology development and validation platform for fusion technology in China. Neutral beam injection is one of the most important auxiliary heating and current drive methods in magnetically confined controlled fusion. Consequently, a negative …

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Electrostatic and Structural Design Analysis of Craft Nnbi High Voltage Deck

Caichao Jiang, Wei Hu, Zhimin Liu, Shiyong Chen et autres

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Comprehensive research facility for negative ion source neutral beam injection at CRAFT: design and first operation

Jianglong Wei, Yahong Xie, Yuanlai Xie, Caichao Jiang et autres

Abstract Neutral beam injection (NBI) has been proven as a reliable heating and current drive method for fusion plasma. For the high-energy NBI system (particle energy > 150 keV) of large-scale fusion devices, the negative ion source neutral beam injection (NNBI) system …

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Plasma discharge experiments of a Faraday shieldless driver for high-power and long-pulse radio frequency ion source for NBI application

Bo Liu, Xufeng Peng, Yuming Gu, Yuwen Yang et autres

Due to the high stability and less maintenance, the radio frequency (RF) driven ion source is preferred for the neutral beam injection (NBI) system. In a popular design of the RF ion source for NBI application, a Faraday shield (FS) is installed …

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Development and Insulation Performance Evaluation of Experimental Sample for a Direct Current High-Voltage Transmission Line

Rixin Wang, Yongjian Xu, Caichao Jiang, Lizhen Liang et autres

For the negative-ion-based neutral beam injection system, the direct current (DC) high-voltage transmission line (HVTL) is the link between the radio frequency (RF) negative-ion source system and the power supply system, which not only realizes the function of the power transmission between …

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