Development of an H<sup>0</sup>CT measurement system at the CSNS injection region

Qiu Ruiyang; Huang Weiling; Zeng Lei; Xu Zhihong; Li Fang; Meng Ming; Yang Tao; Wang Anxin; Liu Mengyu; Sun Jilei; Xu Taoguang

doi:10.11884/HPLPB202335.220142

Volume 35 Issue 2

Jan. 2023

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Article Navigation > High Power Laser and Particle Beams > 2023 > 35(2): 024004

Qiu Ruiyang, Huang Weiling, Zeng Lei, et al. Development of an H0CT measurement system at the CSNS injection region[J]. High Power Laser and Particle Beams, 2023, 35: 024004. doi: 10.11884/HPLPB202335.220142

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Qiu Ruiyang, Huang Weiling, Zeng Lei, et al. Development of an H⁰CT measurement system at the CSNS injection region[J]. High Power Laser and Particle Beams, 2023, 35: 024004. doi: 10.11884/HPLPB202335.220142

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Development of an H⁰CT measurement system at the CSNS injection region

doi: 10.11884/HPLPB202335.220142

Qiu Ruiyang^{1, 2
,},
Huang Weiling^{1, 2
,
,},
Zeng Lei^{1, 2},
Xu Zhihong^{1, 2},
Li Fang^{1, 2},
Meng Ming^{1, 2},
Yang Tao^{1, 2},
Wang Anxin^{1, 2},
Liu Mengyu³,
Sun Jilei^{1, 2},
Xu Taoguang²

1.
Spallation Neutron Source Science Center, Dongguan 523803, China
2.
Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2022-05-06
Accepted Date: 2022-10-11
Rev Recd Date: 2022-09-13

Available Online: 2022-10-17

Publish Date: 2023-01-14

Abstract

Abstract

The high intensity proton accelerator of China Spallation Neutron Source adopts the method of charge exchange injection. A carbon foil strips two electrons of H⁻ into H⁺, and proton beams are multiturn-painted in the phase space of the rapid cycling synchrontron for acceleration to 1.6 GeV. A new-developed beam current transformer (H⁰CT) was installed at the I-Dump beamline to measure the incompletely stripped H⁻ and H⁰ particles, for the sake of an accurate measurement of the stripping efficiency, together with a study of the service life of the foil stripper with different thicknesses. To measure such extremely weak microampere beam current, in the development of the H⁰CT measurement system, we took into account the external interference and the noises from probes, cables and electronics. The new design has minimized the impact of environmental noise, improved the signal-to-noise ratio, and successfully measured the microampere pulsed current.
- CSNS,
- H⁰CT,
- pulsed current measurement,
- microampere

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References(16)

References

[1]	Wang Sheng, An Yuwen, Fang Shouxian, et al. An overview of design for CSNS/RCS and beam transport[J]. Science China Physics, Mechanics and Astronomy, 2011, 54(s2): 239-244. doi: 10.1007/s11433-011-4564-x
[2]	Xu S Y, Huang L S, Huang M Y, et al. Beam commissioning experience of CSNS/RCS[C]//Proceedings of 10th International Particle Accelerator Conference. 2019: 1012-1014.
[3]	Jones B, Adams D J, Hughes M C, et al. Injection and stripping foil studies for a 180 MeV injection upgrade at ISIS[C]//Proceedings of HB2012. 2012: 456-460.
[4]	Bracco C, Burger S, Forte V, et al. Commissioning of the stripping foil units for the upgrade of the PSB H⁻ injection system[C]//Proceedings of IPAC2017. 2017: 595-598.
[5]	Roncarolo F, Allica Santamaria J C, Bozzolan M, et al. Beam instrumentation for the CERN LINAC4 and PSB half sector test[C]//Proceedings of IPAC2017. 2017: 408-411.
[6]	Shaw R W, Plum M A, Wilson L L, et al. Spallation Neutron Source (SNS) diamond stripper foil development[C]//Proceedings of 2007 IEEE Particle Accelerator Conference (PAC). 2007.
[7]	Danilov V, Aleksandrov A, Assadi S, et al. Proof-of-principle demonstration of high efficiency laser-assisted H⁻ beam conversion to protons[J]. Physical Review Special Topics - Accelerators and Beams, 2007, 10: 053501. doi: 10.1103/PhysRevSTAB.10.053501
[8]	Liu Y, Rakhman A, Menshov A, et al. Laser system design and operation for SNS H⁻ beam laser stripping[C]//Proceedings of IPAC2017. 2017: 57-59.
[9]	Saha P K, Hatakeyama S, Yamamoto K, et al. State of the art online monitoring system for the waste beam in the rapid cycling synchrotron of the Japan Proton Accelerator Research Complex[J]. Physical Review Special Topics - Accelerators and Beams, 2011, 14: 072801. doi: 10.1103/PhysRevSTAB.14.072801
[10]	Chen J X, Kang L, Yu J B, et al. Research of the Chinese Spallation Neutron Source stripper foil[C]//Proceedings of IPAC2017. 2017: 4562-4564.
[11]	Huang W L, Qiu R Y, Li F, et al. A dual functional current monitor for stripping efficiency measurement in CSNS[C]//8th International Beam Instrumentation Conference. Malmö, Sweden: IBIC, 2019: 96-99.
[12]	沈莉, 池云龙, 黄川, 等. CSNS RCS注入涂抹凸轨磁铁脉冲电源设计[J]. 中国物理C, 2008, 32(s1):22-24 Shen Li, Chi Yunlong, Huang Chuan, et al. Design of injection painting bumper magnets pulse power supply for CSNS/RCS[J]. Chinese Physics C, 2008, 32(s1): 22-24
[13]	曾磊, 田建民, 邱瑞阳, 等. CSNS束流损失测量系统设计[J]. 强激光与粒子束, 2019, 31:015102 doi: 10.11884/HPLPB201931.180198 Zeng Lei, Tian Jianmin, Qiu Ruiyang, et al. Design of the CSNS beam loss monitor system[J]. High Power Laser and Particle Beams, 2019, 31: 015102 doi: 10.11884/HPLPB201931.180198
[14]	Huang M Y, Wang S, Xu S Y. Beam loss and the stripping efficiency measurement for CSNS injection system[C]//Proceedings of the 10th International Particle Accelerator Conference (IPAC'19). 2019: 2329-2331.
[15]	高峰, 张合. 弹体磁屏蔽效能的计算与仿真[J]. 计量学报, 2010, 31(2):141-144 doi: 10.3969/j.issn.1000-1158.2010.02.11 Gao Feng, Zhang He. Calculation and simulation of geomagnetic field shielding effectiveness of projectile body[J]. Acta Metrologica Sinica, 2010, 31(2): 141-144 doi: 10.3969/j.issn.1000-1158.2010.02.11
[16]	Zhou Qi, Wang Zhigang. A DC-servo baseline restorer and its implementation in biomedical instrumentation[C]//Proceedings of SPIE. 2006.