Speaker
Description
The Hard X-ray Free-Electron Laser facility is an advanced high-repetition-rate X-ray light source, establishing a new-generation large scientific experimental platform for interdisciplinary research in multiple fields. The project involves approximately 80 planar undulators, each exceeding 4 meters in length. To enable rapid and efficient measurement of their integral field errors, a 5-meter flip coil magnetic measurement system has been upgraded. This system adopts a two-tier control architecture, with a Beckhoff-based lower controller and a C#-based upper computer interface. It enables synchronized motion of paired X and Y linear stages and rotary axes, with repositioning accuracies better than ±1μm and 0.02°, respectively. A modular mechanical structure allows for continuous adjustment of the coil width, and a tension gauge enables real-time visual control of wire tension. This setup facilitates the study of measurement accuracy under various tension conditions. By establishing a three-dimensional model linking coil width, tension, and measurement accuracy, the system focuses on analyzing the influence of parameters on magnetic field measurements accuracy under long-undulator magnetic fields. This provides a solid technical foundation for improving the precision and reliability of integrated field measurements in undulator systems.
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