Speaker
Description
The performance of synchrotron radiation or free electron lasers is not only dependent on the quality of the electron beam but also on the quality of the magnetic field of the insertion devices, making accurate magnetic field measurement critical. Conventional measurement methods typically use Hall probes for point-by-point measurements. However, the use of Hall probes becomes difficult in scenarios such as small gaps, closed gaps, or mechanical constraints (e.g., superconducting undulators). In the pulsed wire method, the metal wire is very thin and can directly measure the first and second integrals of the magnetic field in confined spaces. Over years of development, the accuracy of this method has improved significantly. The Shanghai Synchrotron Radiation Facility is currently developing a superconducting wiggler and plans to measure the magnetic field using the pulsed wire method. This paper presents the design of the pulsed wire system in the superconducting wiggler.
