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Chinese Spallation Neutron Source (CSNS) is a facility planned to be built in China in the coming years. It is composed of 80 MeV Linac, 1.6 GeV Rapid Cycling Synchrotron (RCS) and target station. To accelerate the proton beam from 80 MeV to 1.6 GeV, the RCS requires the field of dipole and quadrupole magnets to change with sine waveform of 25 Hz plus a biased DC. For large amplitude AC magnets with large aperture, there are critical issues to be addressed, such as eddy current induced in the magnet yoke, coils and endplates, vibration of the yoke and coil, field tracking between dipoles and quadrupoles, and so on. To study these issues, one prototype dipole magnet and one prototype quadrupole magnet have been developed and tested. In this paper, the design, fabrication and tests of the two magnets will be described. [ABSTRACT FROM PUBLISHER]

BEPCII is a double-ring collider with a compact interaction region (IR). The IR magnet system of the BEPCII includes two superconducting magnets, two septum bending magnets, four conventional dual aperture quadrupoles and eight slim quadrupoles. These magnets are specially designed to adapt for the tight space limitation and meet the requirements of high current intensity and large beam aperture. This paper presents the basic design conception and field performance of these magnets. [ABSTRACT FROM AUTHOR]