Design of imaging system for CSNS near-target beam diagnostics

Zeng, Zhirong; Zhang, Shanhua; Cheng, Weilin; Yu, Qian; Wei, Shaohong; Zhou, Bin; Zhu, Daoben; Ji, Q.; Zeng, Aijun; Liang, Tianjiao; Chen, Yuanbo

doi:10.1007/s41605-018-0067-x

Cited by 3 publications

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…multifilament beam monitor faces increased exposure to the high-radiation environment. Another method that involves coating the surface of the target with luminescent material has been used by the SNS [8,9], CSNS [10,11], and European Spallation Source (ESS) [12]. The fluorescence emitted by the interaction between the proton beam and luminescent material is captured by a camera to achieve images of the beam spot.…”

Section: Jinst 17 P08001mentioning

confidence: 99%

A novel methodological study for monitoring proton beam spot using back-streaming secondary neutrons from the high-power target

et al. 2022

View full text Add to dashboard Cite

The power of the proton beam of a high-power spallation neutron source generally ranges from 100 kW to several MW. The distribution of the power density of the beam on the target is critical for the stable operation of the high-power spallation target. This study proposes a beam monitoring method that involves restoring the image of a high-power proton beam spot on a target based on the principle of pinhole imaging by using the back-streaming of secondary neutrons from the spallation target. Fast and indirect imaging of the beam spot can be achieved at a distance of tens of meters from the target. The proposed method of beam monitoring can flexibly adjust the size of the pinhole and the measurement distance to control the intensity of flux of the secondary neutrons according to the demands of the detection system, which is far from the high-radiation target area. The results of simulations showed that the proposed method can be used to restore the beam spot of the incident proton by using the point response function and images of the secondary neutrons. Based on the target and the Back-n beamline in the CSNS, the effectiveness of this method has also been confirmed by means of Monte Carlo simulation.

show abstract

Section: Jinst 17 P08001mentioning

confidence: 99%

A novel methodological study for monitoring proton beam spot using back-streaming secondary neutrons from the high-power target

et al. 2022

View full text Add to dashboard Cite

show abstract

Imaging and reconstruction of high-energy proton beam spot before target based on secondary gamma rays

Tian

Sun

Yang

et al. 2022

Review of Scientific Instruments

View full text Add to dashboard Cite

The distribution and stability of the incident proton beam spot are critical for the stable operation of a high-power spallation target. This study proposes a method to capture images of the incident proton beam spot based on secondary gamma rays. The distribution of the backward secondary gamma rays irradiated by the primary proton beam on the incident surface of the target is close to the distribution of the protons and can be measured at a low-radiation position far from the target area. A relation of distributions between the incident protons and the secondary gammas is constructed by using the point response function of this pinhole imaging system. The proposed method of imaging is suitable for monitoring the distribution of the proton beam on the target in facilities that use a beam power of several megawatts or tens of megawatts, such as spallation neutron sources or accelerator-driven subcritical systems.

show abstract

A novel method for monitoring proton beam spot using back-streaming secondary neutrons from the target

Yang¹,

Jing²,

Tian³

et al. 2021

Preprint

View full text Add to dashboard Cite

Design of imaging system for CSNS near-target beam diagnostics

Cited by 3 publications

References 12 publications

A novel methodological study for monitoring proton beam spot using back-streaming secondary neutrons from the high-power target

A novel methodological study for monitoring proton beam spot using back-streaming secondary neutrons from the high-power target

Imaging and reconstruction of high-energy proton beam spot before target based on secondary gamma rays

A novel method for monitoring proton beam spot using back-streaming secondary neutrons from the target

Contact Info

Product

Resources

About