Skip to main content
Open Access Publications from the University of California

Superconducting Undulators With Variable Polarization and Enhanced Spectral Range


A concept utilizing superconducting magnets for variable polarization insertion devices is presented. The iron-free design enables full variable linear and elliptical polarization over a broad spectral range. With appropriate electrical switching the same device can access higher energies through period-halving, while continuing to provide variable-linear polarization; furthermore, separate switching will allow for period-doubling with full linear and elliptical polarization control. The performance, both in terms of field/spectral performance and in terms of polarization control, is compared to existing permanent magnet EPU devices. Engineering issues associated with the fabrication and implementation of the device are discussed.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View