HL-2M装置中性束注入加热系统研制进展
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摘要
为开展磁约束堆芯燃烧等离子体物理实验,正在建造的HL-2M装置拟建造3条5MW的中性束注入加热束线。简要概述了HL-2M装置NBI加热系统的总体规划,第1条5MW-NBI加热束线的设计,离子源调试实验,注入器核心部件的安装和测试结果。通过调试,目前单个离子源引出束流达到36A,加速电压75kV,离子束功率达到2.4MW,脉冲宽度3s。通过测试发现:注入器的4条离子束汇聚角误差小于±0.1°,残留离子偏转磁体的磁场测试值与模拟计算值偏差小于±5%,注入器静态真空值达到1.0×10~(-3)Pa。注入器采用大型非标低温泵,低温泵的抽速达到2.40×106L/s。第1条5MW-NBI加热束线的试装和测试结果表明,该束线能够满足HL-2M装置NBI加热的技术要求。
In order to carry out the physical experiment of magnetic confinement core combustion plasma,the HL-2 M device under construction is intended to construct three 5 MW neutral beam injection heating lines. This paper briefly outlines the overall planning of the neutral beam injection( NBI) heating system of the HL-2 M device,the design of the first 5 MW-NBI heating beam line,the ion source commissioning experiment,the installation and test results of the injector core components. Through debugging,for single ion source the extraction beam current reaches 36 A,the acceleration voltage is 75 k V,the ion beam power reaches 2. 4 MW,and the pulse width is 3 s. It is found by testing that the convergence angle error of 4 ion beam from the injector is less than + 0. 1°,the deviation between the test values and simulation values of magnetic field with deflecting magnet for deflecting residual ions is less than ± 5%,and the static vacuum value of the injector reached 1. 0 × 10~(-3) Pa. The injector has adopted a large non-standard cryogenic pump with a pumping speed of 2. 4× 10~6 L·s~(-1). The trial assembly and test results of the first 5 MW-NBI heating beam show that the beam line can meet the technical requirements of NBI heating on HL-2 M device.
In order to carry out the physical experiment of magnetic confinement core combustion plasma,the HL-2 M device under construction is intended to construct three 5 MW neutral beam injection heating lines. This paper briefly outlines the overall planning of the neutral beam injection( NBI) heating system of the HL-2 M device,the design of the first 5 MW-NBI heating beam line,the ion source commissioning experiment,the installation and test results of the injector core components. Through debugging,for single ion source the extraction beam current reaches 36 A,the acceleration voltage is 75 k V,the ion beam power reaches 2. 4 MW,and the pulse width is 3 s. It is found by testing that the convergence angle error of 4 ion beam from the injector is less than + 0. 1°,the deviation between the test values and simulation values of magnetic field with deflecting magnet for deflecting residual ions is less than ± 5%,and the static vacuum value of the injector reached 1. 0 × 10~(-3) Pa. The injector has adopted a large non-standard cryogenic pump with a pumping speed of 2. 4× 10~6 L·s~(-1). The trial assembly and test results of the first 5 MW-NBI heating beam show that the beam line can meet the technical requirements of NBI heating on HL-2 M device.
引文
[1]袁保山,姜韶风,陆志鸿.托卡马克装置工程基础[M].北京:原子能出版社,2011:411-415.(Yuan Baoshan,Jiang Shaofeng,Lu Zhihong. Tokamak device engineering foundation. Beijing:Atomic Press,2011:411-415)
[2] Cao Jianyong,Wei Huiling,Liu He,et al. Empirical scaling laws of neutral beam injection power in HL-2A Tokamak[J]. Chinese Physics Letter,2015,32(5):052902.
[3] Hu Chundong,Xu Yongjian,Xie Yuanlai,et al. The recent development of the EAST neutral beam injector[J]. Chinese Physics Letter,2015,32(5):052901.
[4] Cao Jianyong,Wei Huiling,Liu He,et al. Conceptual design of 5MW-NBI injector for HL-2M tokamak[J]. Fusion Engineering and Design,2013,88:872-877.
[5] Liu He,Cao Jianyong,Wei Huiling,et al. The latest progress of the 1st NBI beamline on HL-2M Tokamak[J]. Fusion Engineering and Design,2016,88:872-877.
[6]曹建勇.孔形引出电极的4离子源NBI注入器计算程序[R]. GF-A0138186G,CNIC/A-20100386,2010.(Cao Jianyong. The calculation code for NBI injector of 4 ion sources with circle apertures electrode. GF-A0138186G,CNIC/A-20100386,2010)
[7] Zou Guiqing,Cao Jianyong,Wei Huiling,et al. The initial characteristics of 80 ke V ion source for a 5 MW neutral beam injector[C]//Proc of 43th EPS/ICPP Conference. 2016.
[8]余佩炫,魏会领,邹桂清,等. HL-2A装置NBI加热束线束光学特性[J].强激光与粒子束,2016,28:054001.(Yu Peixuan,Wei Huiling,Zou Guiqing,et al. Beam optic characteristics of neutral beam heating line on HL-2A. High Power Laser and Particle Beams,2016,28:054001)
[9]魏会领,曹建勇,杨宪福,等. HL-2A装置中性束离子源引出系统束流分析[J].强激光与粒子束,2014,26:114006.(Wei Huiling,Cao Jianyong,Yang Xianfu,et al. Beam current in extraction system of neutral beam ion source on HL-2A. High Power Laser and Particle Beams,2014,26:114006)
[10]何峰,曹建勇,魏会领,等. HL-2M装置周边磁场分布及NBI束线磁屏蔽分析[J].核聚变与等离子体物理,2017,37(4):385-391.(He Feng,Cao Jianyong,Wei Huiling,et al. Magnetic field distribution surrounding HL-2M tokamak and magnetic shielding analysis for NBI device.Nuclear Fusion and Plasma Physics,2017,37(4):385-391)
[11]曹建勇,周红霞,刘鹤,等. HL-2M装置5MW-NBI加热束线残留离子束偏转磁体研制[J].核聚变与等离子体物理,2017,37(4):411-417.(Cao Jianyong,Zhou Hongxia,Liu He,et al. Development of deflecting magnet for HL-2M 5MW-NBI beam line. Nuclear Fusion and Plasma Physics,2017,37(4):385-391)
[12] Yang Xianfu,Cao Jianyong,Liu He,et al. Cryopump development of the 5 MW neutral beam injector system on HL-2M tokamak[J]. Review of Scientific Instruments,2017,88:073510.
[2] Cao Jianyong,Wei Huiling,Liu He,et al. Empirical scaling laws of neutral beam injection power in HL-2A Tokamak[J]. Chinese Physics Letter,2015,32(5):052902.
[3] Hu Chundong,Xu Yongjian,Xie Yuanlai,et al. The recent development of the EAST neutral beam injector[J]. Chinese Physics Letter,2015,32(5):052901.
[4] Cao Jianyong,Wei Huiling,Liu He,et al. Conceptual design of 5MW-NBI injector for HL-2M tokamak[J]. Fusion Engineering and Design,2013,88:872-877.
[5] Liu He,Cao Jianyong,Wei Huiling,et al. The latest progress of the 1st NBI beamline on HL-2M Tokamak[J]. Fusion Engineering and Design,2016,88:872-877.
[6]曹建勇.孔形引出电极的4离子源NBI注入器计算程序[R]. GF-A0138186G,CNIC/A-20100386,2010.(Cao Jianyong. The calculation code for NBI injector of 4 ion sources with circle apertures electrode. GF-A0138186G,CNIC/A-20100386,2010)
[7] Zou Guiqing,Cao Jianyong,Wei Huiling,et al. The initial characteristics of 80 ke V ion source for a 5 MW neutral beam injector[C]//Proc of 43th EPS/ICPP Conference. 2016.
[8]余佩炫,魏会领,邹桂清,等. HL-2A装置NBI加热束线束光学特性[J].强激光与粒子束,2016,28:054001.(Yu Peixuan,Wei Huiling,Zou Guiqing,et al. Beam optic characteristics of neutral beam heating line on HL-2A. High Power Laser and Particle Beams,2016,28:054001)
[9]魏会领,曹建勇,杨宪福,等. HL-2A装置中性束离子源引出系统束流分析[J].强激光与粒子束,2014,26:114006.(Wei Huiling,Cao Jianyong,Yang Xianfu,et al. Beam current in extraction system of neutral beam ion source on HL-2A. High Power Laser and Particle Beams,2014,26:114006)
[10]何峰,曹建勇,魏会领,等. HL-2M装置周边磁场分布及NBI束线磁屏蔽分析[J].核聚变与等离子体物理,2017,37(4):385-391.(He Feng,Cao Jianyong,Wei Huiling,et al. Magnetic field distribution surrounding HL-2M tokamak and magnetic shielding analysis for NBI device.Nuclear Fusion and Plasma Physics,2017,37(4):385-391)
[11]曹建勇,周红霞,刘鹤,等. HL-2M装置5MW-NBI加热束线残留离子束偏转磁体研制[J].核聚变与等离子体物理,2017,37(4):411-417.(Cao Jianyong,Zhou Hongxia,Liu He,et al. Development of deflecting magnet for HL-2M 5MW-NBI beam line. Nuclear Fusion and Plasma Physics,2017,37(4):385-391)
[12] Yang Xianfu,Cao Jianyong,Liu He,et al. Cryopump development of the 5 MW neutral beam injector system on HL-2M tokamak[J]. Review of Scientific Instruments,2017,88:073510.