Conveners
Wed-Af-Or3 - Wiggler Magnets
- Al Zeller (NHMFL/FSU)
- Thomas Nes (EPFL)
The European Synchrotron Radiation Facility (ESRF) is currently working on the development of a new synchrotron light source for its beamline BM18. The proposed source is a short wiggler composed by three pairs of magnetic poles, delivering a peak magnetic field of 1.58 tesla. A crucial requirement is the possibility of performing scans of the magnetic field intensity, while keeping the...
In 2022, a collaborative team led by Pohang Accelerator Laboratory, Seoul National University and Kangwon National University began the development of a 5 T metal-insulated high-temperature superconducting (HTS) wavelength shifter (WLS) magnet, aiming to enhance the brilliance of photons by 1,000 times at 100 keV in Pohang Light Source II. In 2023, we reported test results of the magnet in a...
To achieve a short-period, high-field undulator using HTS tape, we propose novel winding methods specifically designed for this purpose. Given the minimum bending radius constraint of HTS tape, conventional horizontal winding has been considered unsuitable for short-period undulators, leading to a primary focus on vertical winding. However, to overcome this limitation, we introduce an...
A 50-period bulk high-temperature superconducting (HTS) undulator, utilizing a staggered-array configuration of RE-Ba-Cu-O bulk superconductors and magnetized by a 7 T solenoid magnet, is currently under development at Zhangjiang Laboratory for Shanghai Soft X-ray Free Electron Laser (SXFEL) facility [1-2]. The device operates through multiple temperature control stages for the HTS insert,...
High-temperature superconducting (HTS) materials have attracted significant interest for use in insertion devices due to their higher critical temperature, Tc and larger critical current density, Jc compared to low-temperature superconducting wires [1-3]. These properties enable the development of undulators with shorter period and larger on-axis magnetic field. Helical undulators, which...
A 12 mm-period, 0.6 m-long HTS undulator, employing staggered-array Gd-Ba-Cu-O (GdBCO) bulks and magnetized by a 7 T superconducting solenoid, is currently being fabricated at Zhangjiang Laboratory for deployment at the Shanghai Soft X-ray Free Electron Laser (SXFEL) facility [1-2]. Realizing an undulator field with an RMS phase error of only a few degrees requires approximately 100...
