Design of detector for measuring beam profile of high-intensity proton accelerator

Liu Mengyu; Sun Jilei; Xu Zhihong; Yang Tao; Nie Xiaojun; Huang Weiling; Kang Ling; Liu Huachang; Yang Renjun

doi:10.11884/HPLPB202537.240419

Volume 37 Issue 4

Mar. 2025

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Article Navigation > High Power Laser and Particle Beams > 2025 > 37(4): 044007

Liu Mengyu, Sun Jilei, Xu Zhihong, et al. Design of detector for measuring beam profile of high-intensity proton accelerator[J]. High Power Laser and Particle Beams, 2025, 37: 044007. doi: 10.11884/HPLPB202537.240419

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Liu Mengyu, Sun Jilei, Xu Zhihong, et al. Design of detector for measuring beam profile of high-intensity proton accelerator[J]. High Power Laser and Particle Beams, 2025, 37: 044007. doi: 10.11884/HPLPB202537.240419

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Design of detector for measuring beam profile of high-intensity proton accelerator

doi: 10.11884/HPLPB202537.240419

Liu Mengyu^{1, 2, 3
,},
Sun Jilei^{1, 2, 3},
Xu Zhihong^{1, 3},
Yang Tao^{1, 3},
Nie Xiaojun^{1, 3},
Huang Weiling^{1, 2, 3
,
,},
Kang Ling^{1, 2, 3},
Liu Huachang^{1, 2, 3},
Yang Renjun^{1, 2, 3
,
,}

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

Received Date: 2024-12-10
Accepted Date: 2025-03-17
Rev Recd Date: 2025-03-17

Available Online: 2025-03-27

Publish Date: 2025-04-15

Abstract

Abstract

Beam profile is one of the key performance indicators for high-intensity proton accelerators. A new residual gas ionization profile monitor has been installed at the Linac of the China Spallation Neutron Source for non-destructive, real-time measurement of parameters such as the transverse beam profile at critical locations. This paper presents the selection, structural design rationale, and beam test results of this profile monitor. The detector adopts a compact structure, offering a high-resolution design within a limited space. The compact design eliminates the equipotential strips that uniformly act on the electric field and adds a field grid at the lower plate apertures to improve the uniformity of the electric field and reduce the electric field components. Beam tests evaluated the performance of the new detector in measuring orbit and profile parameters, with calibration performed in comparison to the BPM near the detector’s location. The error between the transverse profile measurement and theoretical calculation was less than 8.3%, meeting the beam measurement requirements.
- high-intensity proton accelerator,
- transverse profile,
- residual gas,
- beam profile,
- detector,
- non-destructive

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References(12)

References

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