ECR源低能强流高电荷态离子束四维发射度测量仪的研制

方兴; 孙良亭; 原有进; 钱程; 陈若富; 武军霞

doi:10.11804/NuclPhysRev.36.03.313

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ECR源低能强流高电荷态离子束四维发射度测量仪的研制

方兴, 孙良亭, 原有进, 钱程, 陈若富, 武军霞

文章导航 > 原子核物理评论 > 2019 > 36(3): 313-321

方兴, 孙良亭, 原有进, 钱程, 陈若富, 武军霞. ECR源低能强流高电荷态离子束四维发射度测量仪的研制[J]. 原子核物理评论, 2019, 36(3): 313-321. doi: 10.11804/NuclPhysRev.36.03.313

引用本文:

FANG Xing, SUN Liangting, YUAN Youjinjin, QIAN Cheng, CHEN Ruofu, WU Junxia. Development of a Four-dimensional Emittance Meter for the Diagnostics of High Intensity Highly Charged Ion Beam From an Electron Cyclotron Resonance Ion Source[J]. Nuclear Physics Review, 2019, 36(3): 313-321. doi: 10.11804/NuclPhysRev.36.03.313

Citation:

FANG Xing, SUN Liangting, YUAN Youjinjin, QIAN Cheng, CHEN Ruofu, WU Junxia. Development of a Four-dimensional Emittance Meter for the Diagnostics of High Intensity Highly Charged Ion Beam From an Electron Cyclotron Resonance Ion Source[J]. Nuclear Physics Review, 2019, 36(3): 313-321. doi: 10.11804/NuclPhysRev.36.03.313

ECR源低能强流高电荷态离子束四维发射度测量仪的研制

doi: 10.11804/NuclPhysRev.36.03.313

方兴^1,2,
孙良亭^1,,
原有进¹,
钱程^1,2,
陈若富¹,
武军霞¹

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 100034

基金项目: 国家自然科学基金资助项目（11427904，11575265）

详细信息

作者简介:
方兴(1987-),男,安徽太湖人,在职博士研究生,从事离子源相关技术;E-mail:fangxing@impcas.ac.cn

通讯作者: 孙良亭,E-mail:sunlt@impcas.ac.cn。

中图分类号: O532.33

Development of a Four-dimensional Emittance Meter for the Diagnostics of High Intensity Highly Charged Ion Beam From an Electron Cyclotron Resonance Ion Source

1.
Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, China;
2.
School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China

Funds: National Natural Science Foundation of China(11427904, 11575265)

摘要: 为全面研究ECR（Electron Cyclotron Resonance）离子源引出的高电荷态离子束流品质，获取ECR离子源引出离子束流的横向四维相空间分布，提高向加速器的注入效率，中国科学院近代物理研究所研制了一台高精度Pepper Pot型发射度测量仪PEMiL（Pepper pot Emittance Meter in Lanzhou）。根据使用需求，利用KBr晶体喷涂技术取代传统的CsI闪烁体成像技术，解决了束流光斑重叠效应，获得了边界清晰的束流图像；并开发了相应的数据处理分析程序，以分析处理得到的束流横向四维相空间分布。利用PEMiL获得了75 keV，170 eμA的O⁵⁺束流横向四维发射度。分析结果表明：PEMiL测量分析后的束流发射度结果可靠性高，荧光屏电荷累积效应造成的发射度差异不超过25%，PEMiL可作为ECR离子源引出离子束流品质诊断的有效装置。
- 离子源 /
- 四维发射度 /
- 耦合 /
- Pepper Pot /
- 重叠
Abstract: To study the four-dimensional (4D) emittances of the ion beams extracted from a highly charged ion source, so as to improve the ion beam coupling efficiency to downstream accelerators, a Pepper Pot type emittance probe PEMiL (Pepper pot Emittance Meter in Lanzhou) has been developed at Institute of Modern Physics (IMP). Based on the application requirements, the typical parameters of PEMiL have been refined. In the development, we utilized a quartz glass target sprayed uniformly with KBr powder as the scintillator instead of the traditional CsI scintillator to mitigate the overlapping effect of ion beam spot images, which has been validated with the measured results that the beam spot overlapping error vanishes and clear boundary spots has been obtained. For this 4D emittance probe, corresponding data processing and analyzing code has also been developed, so as to give the detailed transverse beam quality information of the incident beam in 4D phase space. In this paper, we will present the technical details about the structure design, fabrication and data processing of PEMiL. The preliminary test results of a 75 keV, 170 eμA O⁵⁺ beam emittance will also be measured. The analysis results show that beam emittance measured by PEMiL reveals a high reliability, the emittance difference that was caused by the charge accumulation effect of scintillator is lower than 25%, and PEMiL can be used as an efficient meter for the ECR ion source extracted beam property diagnostic.
- ion source /
- coupling /
- 4D emittance /
- Pepper Pot /
- overlapping

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ECR源低能强流高电荷态离子束四维发射度测量仪的研制

doi: 10.11804/NuclPhysRev.36.03.313

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 100034

基金项目: 国家自然科学基金资助项目（11427904，11575265）

作者简介:
方兴(1987-),男,安徽太湖人,在职博士研究生,从事离子源相关技术;E-mail:fangxing@impcas.ac.cn

通讯作者: 孙良亭,E-mail:sunlt@impcas.ac.cn。

收稿日期: 2019-04-14
修回日期: 2019-06-11
刊出日期: 2019-09-20

中图分类号: O532.33

关键词:

离子源 /

四维发射度 /

耦合 /

Pepper Pot /

重叠

摘要: 为全面研究ECR（Electron Cyclotron Resonance）离子源引出的高电荷态离子束流品质，获取ECR离子源引出离子束流的横向四维相空间分布，提高向加速器的注入效率，中国科学院近代物理研究所研制了一台高精度Pepper Pot型发射度测量仪PEMiL（Pepper pot Emittance Meter in Lanzhou）。根据使用需求，利用KBr晶体喷涂技术取代传统的CsI闪烁体成像技术，解决了束流光斑重叠效应，获得了边界清晰的束流图像；并开发了相应的数据处理分析程序，以分析处理得到的束流横向四维相空间分布。利用PEMiL获得了75 keV，170 eμA的O⁵⁺束流横向四维发射度。分析结果表明：PEMiL测量分析后的束流发射度结果可靠性高，荧光屏电荷累积效应造成的发射度差异不超过25%，PEMiL可作为ECR离子源引出离子束流品质诊断的有效装置。

English Abstract

Development of a Four-dimensional Emittance Meter for the Diagnostics of High Intensity Highly Charged Ion Beam From an Electron Cyclotron Resonance Ion Source

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

2. School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China

Funds: National Natural Science Foundation of China(11427904, 11575265)

Received Date: 2019-04-14
Rev Recd Date: 2019-06-11
Publish Date: 2019-09-20

Keywords:

Abstract: To study the four-dimensional (4D) emittances of the ion beams extracted from a highly charged ion source, so as to improve the ion beam coupling efficiency to downstream accelerators, a Pepper Pot type emittance probe PEMiL (Pepper pot Emittance Meter in Lanzhou) has been developed at Institute of Modern Physics (IMP). Based on the application requirements, the typical parameters of PEMiL have been refined. In the development, we utilized a quartz glass target sprayed uniformly with KBr powder as the scintillator instead of the traditional CsI scintillator to mitigate the overlapping effect of ion beam spot images, which has been validated with the measured results that the beam spot overlapping error vanishes and clear boundary spots has been obtained. For this 4D emittance probe, corresponding data processing and analyzing code has also been developed, so as to give the detailed transverse beam quality information of the incident beam in 4D phase space. In this paper, we will present the technical details about the structure design, fabrication and data processing of PEMiL. The preliminary test results of a 75 keV, 170 eμA O⁵⁺ beam emittance will also be measured. The analysis results show that beam emittance measured by PEMiL reveals a high reliability, the emittance difference that was caused by the charge accumulation effect of scintillator is lower than 25%, and PEMiL can be used as an efficient meter for the ECR ion source extracted beam property diagnostic.

引用本文:

Citation:

FANG Xing, SUN Liangting, YUAN Youjinjin, QIAN Cheng, CHEN Ruofu, WU Junxia. Development of a Four-dimensional Emittance Meter for the Diagnostics of High Intensity Highly Charged Ion Beam From an Electron Cyclotron Resonance Ion Source[J]. Nuclear Physics Review, 2019, 36(3): 313-321. doi: 10.11804/NuclPhysRev.36.03.313