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Preliminary Experimental Results of Shattered Pellet Injection on the HL-2A Tokamak
Fusion Science and Technology ( IF 0.9 ) Pub Date : 2020-09-21 , DOI: 10.1080/15361055.2020.1817703
H. B. Xu 1 , G. L. Zhu 1 , Z. Cao 1 , Y. B. Dong 1 , Y. K. Zhong 1 , X. Cai 1 , L. Liu 1 , Y. G. Li 1 , Z. C. Yang 1 , J. Wang 1 , P. Lu 1 , D. Q. Liu 1
Affiliation  

Abstract A shattered pellet injector based on in situ technology was installed on the HL-2A tokamak, and preliminary experiments were performed recently. In this paper, a fast current shutdown experiment introduces shattered pellet injection (SPI). In comparison with spontaneous disruptions and massive gas injection, SPI has advantages for disruption mitigation. The experimental results show the hard-X-ray radiation intensity (40 to 60 keV) rapidly falling from 20 to 0 when SPI is used. From this, we can infer that runaway electrons are suppressed. This observation indicates that SPI should be a good candidate for current fast shutdown in the future.

中文翻译:

HL-2A托卡马克破碎弹丸注射的初步实验结果

摘要 在HL-2A托卡马克上安装了一种基于原位技术的破碎弹丸注射器,并于近期进行了初步实验。在本文中,快速电流关断实验介绍了破碎颗粒注入 (SPI)。与自发中断和大量注气相比,SPI 在减少中断方面具有优势。实验结果表明,当使用 SPI 时,硬 X 射线辐射强度(40 至 60 keV)从 20 迅速下降到 0。由此,我们可以推断失控的电子被抑制了。这一观察结果表明 SPI 应该是未来当前快速关断的一个很好的候选者。
更新日期:2020-09-21
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