Development of data acquisition and over-current protection systems for a suppressor-grid current with a neutral-beam ion source

Wei LIU (刘伟); Chundong HU (胡纯栋); Sheng LIU (刘胜); Shihua SONG (宋士花); Jinxin WANG (汪金新); Yan WANG (王艳); Yuanzhe ZHAO (赵远哲); LizhenLIANG (梁立振)

doi:10.1088/2058-6272/aa8cc1

Plasma Science and Technology > 2017 > 19(12): 125605. > DOI: 10.1088/2058-6272/aa8cc1

Wei LIU (刘伟), Chundong HU (胡纯栋), Sheng LIU (刘胜), Shihua SONG (宋士花), Jinxin WANG (汪金新), Yan WANG (王艳), Yuanzhe ZHAO (赵远哲), LizhenLIANG (梁立振). Development of data acquisition and over-current protection systems for a suppressor-grid current with a neutral-beam ion source[J]. Plasma Science and Technology, 2017, 19(12): 125605. DOI: 10.1088/2058-6272/aa8cc1

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Development of data acquisition and over-current protection systems for a suppressor-grid current with a neutral-beam ion source

1 Institute of Plasma Physics Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 2 University of Science and Technology of China, Hefei 230026, People’s Republic of China

Funds: This work is supported by National Natural Science Foundation of China (No.11575240), Key Program of Research and Development of Hefei Science Center, CAS (grant 2016HSC-KPRD002).

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Received Date: June 01, 2017

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Abstract

Neutral beam injection is one of the effective auxiliary heating methods in magnetic-confinement-fusion experiments. In order to acquire the suppressor-grid current signal and avoid the grid being damaged by overheating, a data acquisition and over-current protection system based on the PXI (PCI eXtensions for Instrumentation) platform has been developed. The system consists of a current sensor, data acquisition module and over-current protection module. In the data acquisition module, the acquired data of one shot will be transferred in isolation and saved in a data-storage server in a txt file. It can also be recalled using NBWave for future analysis. The over-current protection module contains two modes: remote and local. This gives it the function of setting a threshold voltage remotely and locally, and the forbidden time of over-current protection also can be set by a host PC in remote mode. Experimental results demonstrate that the data acquisition and over-current protection system has the advantages of setting forbidden time and isolation transmission.
- neutral beam injection,
- high-current ion source,
- suppression grid current,
- data acquisition and protection system

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References

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Development of data acquisition and over-current protection systems for a suppressor-grid current with a neutral-beam ion source