Development of rapid-cycling superconducting magnets and the SIS300 cryogenic accelerator system

The SIS300 ion synchrotron is the last stage of the FAIR facility for antiproton and ion research. Its magnet structure is based on rapid-cycling superconducting magnets, making it possible to increase the energy and time-averaged intensity of particle beams. In 2008, the Institute of High Energy Physics (IFVE) developed and successfully tested the SIS300 model dipole, which reached a central magnetic field 6.8 T with ramping 1.15 T/sec, which is higher than that of existing analogues. At the present time, the IHEP is developing with the financial support from Rosatom prototypes of rapid-cycling quadrupole and corrector magnets for SIS300 and is developing in collaboration with the Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM) a superconducting conductor for these magnets and developing the SIS300 cryostating system, which will be built by Kriogenmash and Geliimash. The status of this work is presented.