Speaker
Description
Precise magnetic-field characterization of in-vacuum undulators is essential for achieving stable beam dynamics in synchrotron light sources. This work presents an in-situ measurement platform that integrates a SAFALI-based Hall probe scanner with a stretched-wire measurement system. The Hall probe unit measures the local magnetic-field distribution along the undulator, achieving micrometer-level positioning accuracy through laser interferometry and optical feedback. In parallel, the stretched-wire system enables reliable determination of the first and second magnetic-field integrals. To minimize magnetic distortion, most mechanical structures are fabricated from low-permeability materials. The system is designed to characterize in-vacuum undulators with magnetic lengths of up to 3 m, allowing comprehensive field mapping without removing the vacuum chamber. The integrated platform is currently under construction for application to in-vacuum undulators at the Korea-4GSR Facility and is expected to improve phase-error reproducibility while providing direct verification of undulator magnetic performance.
| Paper status | Proceeding files received |
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