基于射频功率调节的负离子源束流反馈控制研究

舒先来; 刘智民; 谢亚红; 王娜; 刘伟; 韦江龙; 崔庆龙; 潘军军; 陈世勇; 胡纯栋

doi:10.11884/HPLPB202234.220098

基于射频功率调节的负离子源束流反馈控制研究

doi: 10.11884/HPLPB202234.220098

舒先来^{1, 2,},
刘智民^{1, 2},
谢亚红^{1, 2, ,},
王娜^{1, 2},
刘伟¹,
韦江龙¹,
崔庆龙¹,
潘军军¹,
陈世勇¹,
胡纯栋^{1, 2}

1.
中国科学院合肥物质科学研究院，合肥 230031
2.
中国科学技术大学，合肥 230026

基金项目: 国家重大科技基础设施建设项目（2018-000052-73-01-001228）; 国家自然科学基金项目(11975261)

详细信息

作者简介:
舒先来，milkshu@mail.ustc.edu.cn

通讯作者:
谢亚红，xieyh@ipp.ac.cn

中图分类号: TL67
计量
- 文章访问数: 597
- HTML全文浏览量: 228
- PDF下载量: 59
- 被引次数: 0
出版历程
- 收稿日期: 2022-04-06
- 修回日期: 2022-08-03
- 网络出版日期: 2022-07-09
- 刊出日期: 2022-09-20

Research on beam feedback control of negative ion source based on RF power regulation

Shu Xianlai^{1, 2
,},
Liu Zhimin^{1, 2},
Xie Yahong^{1, 2
, ,},
Wang Na^{1, 2},
Liu Wei¹,
Wei Jianglong¹,
Cui Qinglong¹,
Pan Junjun¹,
Chen Shiyong¹,
Hu Chundong^{1, 2}

1.
Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
2.
University of Science and Technology of China, Hefei 230026, China

摘要

摘要: 基于射频负离子源的中性束注入系统是高功率长脉冲（稳态）运行中性束注入系统的最佳选择。负离子源是中性束注入系统的核心部件，需要实现稳定的负离子束引出和加速。在负离子源的运行过程中引出负离子电流会发生变化，尤其在长脉冲、高能量运行条件下会更加明显，因此无法满足稳定运行的要求。为了实现引出束流的稳定引出，开展了束流反馈控制研究，研发了一套基于射频功率调节的束流反馈控制系统，并将束流反馈控制系统应用在射频负离子源测试平台，开展了束流反馈控制测试。测试结果表明束流反馈控制系统能够实现对束流的实时反馈调节以获得束流的稳定引出，验证了基于射频功率调节的束流反馈控制的可行性，为高功率射频负离子源的研制提供支持。
- 中性束注入 /
- 射频负离子源 /
- 长脉冲 /
- 稳定输出 /
- 反馈控制
Abstract: Neutral beam injection systems based on RF negative ion sources are the best choice for high power long pulse (steady-state) operation of neutral beam injection systems. The negative ion source is the core component of the neutral beam injection system, which needs to achieve stable negative ion beam extraction and acceleration. During the operation of the negative ion source, the negative ion current will change, especially under long-pulse and high-energy operating conditions, so it cannot meet the requirements of stable operation. To achieve a stable extraction of the extracted beam, the research on beam feedback control was carried out and a beam feedback control system based on RF power adjustment was developed. The beam feedback control system has been applied in the RF negative ion source test platform. The test results show that the beam feedback control system can realize real-time feedback adjustment of the beam to obtain stable extraction of the beam. Beam feedback control based on RF power regulation is feasible, which provides support for the development of high-power RF negative ion sources.
- neutral beam injection /
- RF negative ion source /
- long pulse /
- stable output /
- feedback control

HTML全文

图 1 功率爬坡控制方法示意图

Figure 1. Schematic diagram of power ramp control method

下载: 全尺寸图片幻灯片

图 2 根据打火信号进行开环/闭环控制切换原理图

Figure 2. Schematic diagram of open-loop/closed-loop control switching according to breakdown signal

下载: 全尺寸图片幻灯片

图 3 束流反馈控制系统硬件结构

Figure 3. Hardware structure of the beam feedback control system

下载: 全尺寸图片幻灯片

图 4 束流反馈控制系统工作流程

Figure 4. Workflow of beam feedback control system

下载: 全尺寸图片幻灯片

图 5 功率爬坡功能测试结果

Figure 5. Test results of power ramp function

下载: 全尺寸图片幻灯片

图 6 束流反馈控制功能测试结果

Figure 6. Test results of beam feedback control function

下载: 全尺寸图片幻灯片

图 7 接入束流反馈控制系统前后引出负离子流对比(I_H-)以及射频功率的调节动作(P_RF)

Figure 7. Comparison of the negative ion current with and without the beam feedback control system (I_H-) and the adjustment action of the RF power (P_RF)

下载: 全尺寸图片幻灯片

参考文献(16)

[1]	Xie Yahong, Hu Chundong, Jiang Caichao, et al. Development and first results of large area radio frequency plasma source for EAST neutral beam injector[J]. Fusion Engineering and Design, 2019, 138: 24-26. doi: 10.1016/j.fusengdes.2018.10.029
[2]	Takeiri Y, Kaneko O, Tsumori K, et al. High performance of neutral beam injectors for extension of LHD operational regime[J]. Fusion Science and Technology, 2010, 58(1): 482-488. doi: 10.13182/FST10-A10834
[3]	McNeely P, Barlak M, Baldzuhn J, et al. Current status of the neutral beam heating system of W7-X[J]. Fusion Engineering and Design, 2013, 88(6/8): 1034-1037.
[4]	Huang Meichu, Hu Chundong, Zhao Yuanzhe, et al. The development of data acquisition and control system for extraction power supply of prototype RF ion source[J]. Plasma Science and Technology, 2018, 20: 085602. doi: 10.1088/2058-6272/aabde5
[5]	Wei Jianglong, Hu Chundong, Jiang Caichao, et al. Conceptual design of magnetic filter for the prototype negative ion source at ASIPP[J]. Fusion Engineering and Design, 2016, 113: 23-29. doi: 10.1016/j.fusengdes.2016.10.005
[6]	Franzen P, Wünderlich D, Riedl R, et al. Status of the ELISE test facility[J]. AIP Conference Proceedings, 2015, 1655: 060001. doi: 10.1063/1.4916470
[7]	Toigo V, Piovan R, Bello S D, et al. The PRIMA test facility: SPIDER and MITICA test-beds for ITER neutral beam injectors[J]. New Journal of Physics, 2017, 19: 085004. doi: 10.1088/1367-2630/aa78e8
[8]	Xie Yahong, Hu Chundong, Wei Jianglong, et al. Research and development progress of radio frequency ion source for neutral beam injector at ASIPP[J]. Review of Scientific Instruments, 2019, 90: 113319. doi: 10.1063/1.5128258
[9]	Wei Jianglong, Hu Chundong, Xie Yahong, et al. Development of a utility negative ion test equipment with RF source at ASIPP[J]. IEEE Transactions on Plasma Science, 2018, 46(5): 1149-1155. doi: 10.1109/TPS.2017.2771825
[10]	Xie Yahong, Hu Chundong, Jiang Caichao, et al. Development and preliminary results of radio frequency ion source[J]. Review of Scientific Instruments, 2016, 87: 02B302. doi: 10.1063/1.4931786
[11]	Su Renxue, Liu Zhiming, Xie Yahong, et al. Studies on the matching network of the high power radio frequency transmitter for the NBI RF ion source[J]. Journal of Fusion Energy, 2015, 34(1): 24-28. doi: 10.1007/s10894-014-9751-0
[12]	Wei Jianglong, Xie Yahong, Jiang Caichao, et al. Hefei utility negative ions test equipment with RF source: commissioning and first results[J]. Plasma Science and Technology, 2018, 20: 125601. doi: 10.1088/2058-6272/aadc06
[13]	Franzen P, Obermayer S, Schäffler J, et al. Beam current feedback regulation of the RF neutral beam sources of ASDEX Upgrade[J]. Fusion Engineering and Design, 2001, 56/57: 487-491. doi: 10.1016/S0920-3796(01)00331-3
[14]	Zhang Xiaodan, Wang Xiaoying, Hu Chundong, et al. The development of data acquisition and processing application system for RF ion source[J]. Plasma Science and Technology, 2017, 19: 075602. doi: 10.1088/2058-6272/aa61f5
[15]	蒋才超. 大功率RF离子源功率馈入关键技术及实验研究[D]. 合肥: 中国科学技术大学, 2019: 79-82 Jiang Caichao. Study on key technology and experiment of power feed-in for high power RF ion source[D]. Hefei: University of Science and Technology of China, 2019: 79-82
[16]	Xie Yahong, Hu Chundong, Jiang Caichao, et al. Design and preliminary results of beam re-turn on of high power ion source[J]. Plasma Science and Technology, 2019, 21: 105601. doi: 10.1088/2058-6272/ab2a8e