Thermal analysis of EAST neutral beam injectors for long-pulse beam operation

Chundong HU (胡纯栋); Yongjian XU (许永建); Yuanlai XIE (谢远来); Yahong XIE (谢亚红); Lizhen LIANG (梁立振); Caichao JIANG (蒋才超); Sheng LIU (刘胜); Jianglong WEI (韦江龙); Peng SHENG (盛鹏); Zhimin LIU (刘智民); Ling TAO (陶玲); the NBI Team

doi:10.1088/2058-6272/aaa4f0

Plasma Science and Technology > 2018 > 20(4): 45602-045602. > DOI: 10.1088/2058-6272/aaa4f0

Chundong HU (胡纯栋), Yongjian XU (许永建), Yuanlai XIE (谢远来), Yahong XIE (谢亚红), Lizhen LIANG (梁立振), Caichao JIANG (蒋才超), Sheng LIU (刘胜), Jianglong WEI (韦江龙), Peng SHENG (盛鹏), Zhimin LIU (刘智民), Ling TAO (陶玲), the NBI Team. Thermal analysis of EAST neutral beam injectors for long-pulse beam operation[J]. Plasma Science and Technology, 2018, 20(4): 45602-045602. DOI: 10.1088/2058-6272/aaa4f0

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Thermal analysis of EAST neutral beam injectors for long-pulse beam operation

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China

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Received Date: October 12, 2017

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Abstract

Abstract

Two sets of neutral beam injectors (NBI-1 and NBI-2) have been mounted on the EAST tokamak since 2014. NBI-1 and NBI-2 are co-direction and counter-direction, respectively. As with in-depth physics and engineering study of EAST, the ability of long pulse beam injection should be required in the NBI system. For NBIs, the most important and difficult thing that should be overcome is heat removal capacity of heat loaded components for long-pulse beam extraction. In this article, the thermal state of the components of EAST NBI is investigated using water flow calorimetry and thermocouple temperatures. Results show that (1) operation parameters have an obvious influence on the heat deposited on the inner components of the beamline, (2) a suitable operation parameter can decrease the heat loading effectively and obtain longer beam pulse length, and (3) under the cooling water pressure of 0.25 MPa, the predicted maximum beam pulse length will be up to 260 s with 50 keV beam energy by a duty factor of 0.5. The results present that, in this regard, the EAST NBI-1 system has the ability of long-pulse beam injection.
- thermal analysis,
- neutral beam injector,
- beam extraction,
- beam divergence,
- ion source

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References

[1]	Hu C D and NBI Team 2012 Plasma Sci. Technol. 14 567
[2]	Chang D H et al 2011 Fusion Eng. Des. 86 244
[3]	Hu C D et al 2011 Plasma Sci. Technol. 13 541
[4]	Hu C D and NBI Team 2012 Plasma Sci. Technol. 14 871
[5]	Xie Y H et al 2014 Rev. Sci. Instrum. 85 02B315
[6]	Hu C D and NBI Team 2013 Plasma Sci. Technol. 15 201
[7]	Wan B N et al 2009 Nucl. Fusion 49 104011
[8]	Li J G et al 2011 Nucl. Fusion 51 094007
[9]	Wan B N et al 2013 Nucl. Fusion 53 104006
[10]	Gong X Z et al 2017 Plasma Sci. Technol. 19 032001
[11]	Xu Y J et al 2016 Rev. Sci. Instrum. 87 02B934
[12]	Yu L et al 2015 J. Fusion Energ. 34 245
[13]	Yu L et al 2013 J. Fusion Energ. 32 547
[14]	Xu Y J et al 2013 Chin. Phys. Lett. 30 032901
[15]	Li X et al 2016 Plasma Sci. Technol. 18 1215

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Thermal analysis of EAST neutral beam injectors for long-pulse beam operation