Speaker
Description
Cryogenic permanent magnet undulators(CPMUs) and superconducting magnets are essential components of synchrotron light sources. The SAFALI system is a commonly used method for measuring magnetic field performance. However, installing and using the SAFALI system to measure the magnetic field in CPMUs with smaller gaps presents significant challenges. In previous studies, we used the PWM system to measure undulators and a small-bore permanent quadrupole magnet, and the results demonstrated its measurement reliability. Therefore, we designed a PWM system for use in vacuum environments. The in-vacuum PWM system includes the wire tension control system and wire displacement detection system. We used an in-vacuum tensiometer mounted on a stepper motor stage to control the wire tension. For the wire displacement detection system, we used an optical design different from that used in previous studies. Finally, we will evaluate the system's accuracy and repeatability in measuring magnetic fields.
