Speaker
Ian Martin
(Diamond Light Source)
Description
A beam based alignment procedure is used to realign the beam to the centers of the quadrupoles, which can be achieved by the calibration of BPM offsets and orbit corrections. Accurately determining quadrupole centers is an important step that requires analyzing BPM data collected while modulating the nearby quadrupole and one or more corrector magnets in the ring. In this paper, some numerical methods to extract the quadrupole centers based on error analysis are presented. Their results are compared to methods without error analysis. This study is based on the online experiments at Diamond and simulations for Diamond-II.
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Author
Hung-Chun Chao
(Diamond Light Source)
Co-author
Ian Martin
(Diamond Light Source)