A method to detect multiple error sources and suppression of periodic beam motion with feedforward correction

Huang, Chih-Hsien; Hsu, K.T.; Chiu, Pei-Chen; Hu, Kuo Hwa

doi:10.1088/1748-0221/14/07/t07001

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…To automatically align the beam position and maintain maximum light flux, plenty of beamlines have developed stabilization systems, including orbit correction and optical correction systems. Orbit correction systems [4][5][6][7][8] typically use beam position monitors (BPMs) [9] and corrector magnets to constrain the beam to its working position, while optical correction systems usually use vertical and horizontal plane mirrors, monochromators [10,11] and detectors to stabilize and maximize light flux. Both orbit and optical correction systems can be implemented as feed forwards (FFs) or feedbacks (FBs).…”

Section: Introductionmentioning

confidence: 99%

Automatic Feedback System for X-ray Flux at BL08U1A Soft X-ray Spectromicroscopy Beamline of Shanghai Synchrotron Radiation Facility

et al. 2023

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An online automatic feedback system has been successfully installed and commissioned at the BL08U1A Soft X-ray Spectromicroscopy Beamline of Shanghai Synchrotron Radiation Facility, which can monitor the incident X-ray beam in real time by measuring the blade-edge signals of the exit slit and automatically adjust the elliptical cylindrical mirror parameters to achieve beam calibration and maintain the optimal X-ray flux of the sample. This work provides a comprehensive description of the hardware composition, system implementation, feedback logic, function and software design, system optimization and commission, as well as the online experimental results supported by the system. The experimental results demonstrated that the online automatic feedback system is capable of effectively maintaining the optimal X-ray beam flux for X-ray absorption spectroscopy experiments. Its success can provide valuable technique assistance for the design, construction and optimization of similar systems at various beamlines in synchrotron sources in the future.

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