The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - UNPB AU - Zhou, Q.G. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - The Progress of the In-Vacuum Superconducting Undulator Prototype for SHINE Project J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - The superconducting undulator can generate the highest peak field with the short period length and give the desirable K value, thus producing the high-intensity high-energy radiation photons. The Shanghai High Repetition rate XFEL and Extreme Light (SHINE) facility will use 40 superconducting undulators with 4m long for each to produce the vertically polarized photons with energy of 10keV-25keV. The period length of undulators is 16mm, the magnetic gap is 5mm and the peak field is 1.58T. Each undulator contains 504 vertical racetrace coils made of NbTi wires which are wound on 504 active poles. A 65K shielding is designed to reduce the thermal radiation from the vacuum chamber. The cooling of the magnet is forced by the liquid helium pipes which are installed in the middle of the magnet yoke surface and the sides of the gap in the direction of the electron beam. There is no beam vacuum chamber due to the small magnetic gap. A prototype of 4m long is being manufactured before the mass production and will be finished this year. The paper will describe the design parameters, the configuration of the prototype and the test plan of this year. PB - JACoW Publishing CP - Geneva, Switzerland ER -