17–22 May 2026
C.I.D
Europe/Zurich timezone

Investigation of Diagonal Cut-Plane BPM Performance in the CSNS RCS

MOP6621
18 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC6.T03: Beam Diagnostics and Instrumentation Poster session

Speaker

Muhammad Abdul Rehman (Institute of High Energy Physics)

Description

Diagonal-cut plane Beam Position Monitors (BPMs) are used to measure the transverse position of the proton beam in the Rapid Cycling Synchrotron (RCS) at the China Spallation Neutron Source (CSNS). Significant transverse beam position offsets were observed at several locations along the RCS. These offsets are potentially attributable to abrupt changes in the cross-section of the upstream and downstream vacuum ducts, BPM calibration constants determined at a single frequency on the calibration system, and limitations in the position calculation algorithm. To assess the impact of the sudden changes in beam duct aperture, numerical simulations were performed. Additionally, BPMs were recalibrated on a test bench to evaluate the influence of abrupt cross-sectional changes in the BPM and vacuum ducts on the observed offsets at different frequencies.

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Author

Muhammad Abdul Rehman (Institute of High Energy Physics)

Co-authors

Fang Li (Institute of High Energy Physics) Mengyu Liu (Chinese Academy of Sciences) Renjun Yang (Institute of High Energy Physics) Ruiyang Qiu (Institute of High Energy Physics) Weiwen Chen (Institute of High Energy Physics) Mr Xiaojun Nie (China Spallation Neutron Source) Yufei Guo (Lanzhou University) Zhihong Xu (Institute of High Energy Physics) chunjie xie (Institute of High Energy Physics)

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