首次使用核反应法鉴别JUNA深地加速器<em>A</em>/<em>q</em>=2的束流种类

陈涵; 许世伟; 武启; 李云居; 陈立华; 高丙水; 孙良亭; 唐晓东

doi:10.11804/NuclPhysRev.36.04.414

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首次使用核反应法鉴别JUNA深地加速器A/q=2的束流种类

陈涵, 许世伟, 武启, 李云居, 陈立华, 高丙水, 孙良亭, 唐晓东

文章导航 > 原子核物理评论 > 2019 > 36(4): 414-418

陈涵, 许世伟, 武启, 李云居, 陈立华, 高丙水, 孙良亭, 唐晓东. 首次使用核反应法鉴别JUNA深地加速器A/q=2的束流种类[J]. 原子核物理评论, 2019, 36(4): 414-418. doi: 10.11804/NuclPhysRev.36.04.414

引用本文:

CHEN Han, XU Shiwei, WU Qi, LI Yunju, CHEN Lihua, GAO Bingshui, SUN Liangting, TANG Xiaodong. Identification of the A/q=2 Beam Species from the JUNA Deep Underground Accelerator by Nuclear Reaction Method for the First Time[J]. Nuclear Physics Review, 2019, 36(4): 414-418. doi: 10.11804/NuclPhysRev.36.04.414

Citation:

CHEN Han, XU Shiwei, WU Qi, LI Yunju, CHEN Lihua, GAO Bingshui, SUN Liangting, TANG Xiaodong. Identification of the A/q=2 Beam Species from the JUNA Deep Underground Accelerator by Nuclear Reaction Method for the First Time[J]. Nuclear Physics Review, 2019, 36(4): 414-418. doi: 10.11804/NuclPhysRev.36.04.414

首次使用核反应法鉴别JUNA深地加速器A/q=2的束流种类

doi: 10.11804/NuclPhysRev.36.04.414

陈涵^1,2,
许世伟^1,2,
武启^1,2,
李云居³,
陈立华³,
高丙水^1,2,
孙良亭^1,2,
唐晓东^1,2

1.
中国科学院近代物理研究所, 兰州 730000;
2.
中国科学院大学核科学与技术学院, 北京 100049;
3.
中国原子能科学研究院, 北京 102413

基金项目: 国家自然科学基金资助项目（11490564，11021504，11321064，11475228，11490564）；中国科学院科研装备研制项目（28Y-531040）

详细信息

作者简介:
陈涵(1992-),男,湖北十堰人,博士研究生,从事粒子物理与原子核物理研究;E-mail:hchen@impcas.ac.cn。

中图分类号: O571.53

Identification of the A/q=2 Beam Species from the JUNA Deep Underground Accelerator by Nuclear Reaction Method for the First Time

1.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China;
3.
China Institute of Atomic Energy, Beijing 102413, China

Funds: National Natural Science Foundation of China(11490564, 11021504, 11321064, 11475228, 11490564);Equipment Research and Development Project of Chinese Academy of Sciences(28Y531040)

摘要: JUNA团队计划利用CJPL所提供的极低本底条件和400 kV高压平台上2.45 GHz ECR离子源产生的毫安量级束流首次在天体物理能区对关键核反应进行直接测量。实验需要10 emA的质子束流和He⁺束流以及2 emA的He²⁺束流。使用2.45 GHz离子源产生毫安量级的He²⁺束流是离子源制造的难点。由于离子源分析磁铁分辨能力有限，无法区分He²⁺和H⁺₂离子，本文首次使用核反应法对离子源产生的A/q=2的束流进行了鉴别，结果显示，JUNA项目2.45 GHz ECR离子源无法产生毫安量级的He²⁺束流。该研究成果为JUNA项目离子源的设计提供了重要的参考依据。JUNA团队另外研制了一台微波频率为14.5 GHz的ECR离子源并成功产生2 emA的He²⁺束流来满足实验需求。
- 锦屏地下核天体物理实验 /
- 核反应法 /
- 2.45 GHz ECR离子源 /
- He²⁺束流 /
- 束流鉴别
Abstract: The Jinping Underground laboratory for Nuclear Astrophysics(JUNA) group is planing to take the advantage of the ultra-low background of China Jinping Underground Laboartory(CJPL) and a high current accelerator based on an 2.45 GHz ECR ion source to study some key reactions of the nuclear astrophysics at their stellar energies for the first time. The experiments in JUNA project need proton, He⁺ and He²⁺ beams with intensities of 10, 10 and 2 emA, respectively. The most challenging part of the design and fabrication of ECR ion source is the production of the He²⁺ beam with intensities at the level of milliamperes. The traditional particle identification method based on magnetic rigidity is difficult to distinguish the He²⁺ and H⁺ ions because of their similar mass-to-charge ratios. Therefore, a novel method using nuclear reactions has been developed in this work for the identification of A/q=2 beam species from the ion source. The result shows that the 2.45 GHz ECR ion source can't produce the He²⁺ beam with a intensity of milliampere. Based on this result, a 14.5 GHz ECR ion source has been developed which has produced 2 emA He²⁺ beam successfully.
- JUNA /
- nuclear reaction method /
- 2.45 GHz ECR ion souce /
- He²⁺ beam /
- beam identificiation

[1]	CHENG J P, KANG K J, LI J M, et al. Annual Review of Nuclear and Particle Science, 2017, 67:231.
[2]	Yu-CHENG W, XI-QING H, QIAN Y, et al. Chinese physics C, 2013, 37(8):086001.
[3]	LIU Weiping, LI Zhihong, HE Jianjun, et al. Science China Physics, Mechanics&Astronomy, 2016, 59(4):642001.
[4]	LIU Weiping, LI Zhihong, HE Jianjun, et al. Atomic Energy Science and Technology, 2019, 53(10):1729.(in Chinese)(柳卫平,李志宏,何建军,等.原子能科学技术, 2019, 53(10):1729.)
[5]	WU Q, ZHANG Z, SUN L, et al. Review of Scientific Instruments, 2014, 85(2):02A703.
[6]	MENG Z, SHI X P, ZHI Z S, et al. Chinese Physics C, 2008, 32(S1):220.
[7]	MELCHERTY F, MEUSERY S, KRUDENERY S, et al. J Phys B-At Mol Opt Phys, 1997, 30:L697.
[8]	REN H, PENG S, XU Y, et al. Science China Physics, Mechanics&Astronomy, 2013, 56(10):2016.
[9]	BROWN D A, CHADWICK M B, CAPOTE R, et al. Nuclear Data Sheets, 2018, 148:1.
[10]	WU Q, SUN L T, CUI B Q, et al. Nucl Instr and Meth A, 2016, 830:214.
[11]	CHEN Han, XU Shiwei, ZHANG Ningtao, et al. Science China Physics, Mechanics&Astronomy, 2018, 61(5):052021.
[12]	WU Qi. Progress Report on High Current Ion Sources and Low Energy Beam Lines in JUNA[R]. JUNA Group Meeting, 2016-10-18, unpublished.(in Chinese)(武启.锦屏强流离子源及低能束运线进展报告[R]. JUNA组会, 2016-10-18.)
[13]	SUN Liangting, ZHAO Hongwei, ZHANG Zimin, et al. Nuclear Techniques, 2006, 29(2):85.(in Chinese)(孙良亭,赵红卫,张子民,等.核技术, 2006, 29(2):85.)

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首次使用核反应法鉴别JUNA深地加速器A/q=2的束流种类

doi: 10.11804/NuclPhysRev.36.04.414

1. 中国科学院近代物理研究所, 兰州 730000;

2. 中国科学院大学核科学与技术学院, 北京 100049;

3. 中国原子能科学研究院, 北京 102413

基金项目: 国家自然科学基金资助项目（11490564，11021504，11321064，11475228，11490564）；中国科学院科研装备研制项目（28Y-531040）

作者简介:
陈涵(1992-),男,湖北十堰人,博士研究生,从事粒子物理与原子核物理研究;E-mail:hchen@impcas.ac.cn。

收稿日期: 2019-11-10
修回日期: 2019-11-27
刊出日期: 2019-12-20

中图分类号: O571.53

关键词:

He²⁺束流 /

摘要: JUNA团队计划利用CJPL所提供的极低本底条件和400 kV高压平台上2.45 GHz ECR离子源产生的毫安量级束流首次在天体物理能区对关键核反应进行直接测量。实验需要10 emA的质子束流和He⁺束流以及2 emA的He²⁺束流。使用2.45 GHz离子源产生毫安量级的He²⁺束流是离子源制造的难点。由于离子源分析磁铁分辨能力有限，无法区分He²⁺和H⁺₂离子，本文首次使用核反应法对离子源产生的A/q=2的束流进行了鉴别，结果显示，JUNA项目2.45 GHz ECR离子源无法产生毫安量级的He²⁺束流。该研究成果为JUNA项目离子源的设计提供了重要的参考依据。JUNA团队另外研制了一台微波频率为14.5 GHz的ECR离子源并成功产生2 emA的He²⁺束流来满足实验需求。

English Abstract

Identification of the A/q=2 Beam Species from the JUNA Deep Underground Accelerator by Nuclear Reaction Method for the First Time

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. University of Chinese Academy of Sciences, Beijing 100049, China;

3. China Institute of Atomic Energy, Beijing 102413, China

Funds: National Natural Science Foundation of China(11490564, 11021504, 11321064, 11475228, 11490564);Equipment Research and Development Project of Chinese Academy of Sciences(28Y531040)

Received Date: 2019-11-10
Rev Recd Date: 2019-11-27
Publish Date: 2019-12-20

Keywords:

Abstract: The Jinping Underground laboratory for Nuclear Astrophysics(JUNA) group is planing to take the advantage of the ultra-low background of China Jinping Underground Laboartory(CJPL) and a high current accelerator based on an 2.45 GHz ECR ion source to study some key reactions of the nuclear astrophysics at their stellar energies for the first time. The experiments in JUNA project need proton, He⁺ and He²⁺ beams with intensities of 10, 10 and 2 emA, respectively. The most challenging part of the design and fabrication of ECR ion source is the production of the He²⁺ beam with intensities at the level of milliamperes. The traditional particle identification method based on magnetic rigidity is difficult to distinguish the He²⁺ and H⁺ ions because of their similar mass-to-charge ratios. Therefore, a novel method using nuclear reactions has been developed in this work for the identification of A/q=2 beam species from the ion source. The result shows that the 2.45 GHz ECR ion source can't produce the He²⁺ beam with a intensity of milliampere. Based on this result, a 14.5 GHz ECR ion source has been developed which has produced 2 emA He²⁺ beam successfully.

引用本文:

Citation:

CHEN Han, XU Shiwei, WU Qi, LI Yunju, CHEN Lihua, GAO Bingshui, SUN Liangting, TANG Xiaodong. Identification of the A/q=2 Beam Species from the JUNA Deep Underground Accelerator by Nuclear Reaction Method for the First Time[J]. Nuclear Physics Review, 2019, 36(4): 414-418. doi: 10.11804/NuclPhysRev.36.04.414

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首次使用核反应法鉴别JUNA深地加速器A/q=2的束流种类

doi: 10.11804/NuclPhysRev.36.04.414

作者简介: 陈涵(1992-),男,湖北十堰人,博士研究生,从事粒子物理与原子核物理研究;E-mail:hchen@impcas.ac.cn。

Identification of the A/q=2 Beam Species from the JUNA Deep Underground Accelerator by Nuclear Reaction Method for the First Time

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首次使用核反应法鉴别JUNA深地加速器A/q=2的束流种类

doi: 10.11804/NuclPhysRev.36.04.414

1. 中国科学院近代物理研究所, 兰州 730000; 2. 中国科学院大学核科学与技术学院, 北京 100049; 3. 中国原子能科学研究院, 北京 102413

作者简介: 陈涵(1992-),男,湖北十堰人,博士研究生,从事粒子物理与原子核物理研究;E-mail:hchen@impcas.ac.cn。

English Abstract

Identification of the A/q=2 Beam Species from the JUNA Deep Underground Accelerator by Nuclear Reaction Method for the First Time

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. China Institute of Atomic Energy, Beijing 102413, China

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作者简介:
陈涵(1992-),男,湖北十堰人,博士研究生,从事粒子物理与原子核物理研究;E-mail:hchen@impcas.ac.cn。

1. 中国科学院近代物理研究所, 兰州 730000;

2. 中国科学院大学核科学与技术学院, 北京 100049;

3. 中国原子能科学研究院, 北京 102413

作者简介:
陈涵(1992-),男,湖北十堰人,博士研究生,从事粒子物理与原子核物理研究;E-mail:hchen@impcas.ac.cn。

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. University of Chinese Academy of Sciences, Beijing 100049, China;

3. China Institute of Atomic Energy, Beijing 102413, China