High magnetic field is widely used in small-angle neutron scattering experiments. Here we describe a new magnetic system for SANS at the YuMo spectrometer. The system includes 3 T electromagnet established on a two-axes goniometric table, power supply, cooling system, PC based control equipment. Main features of magnetic system are: big changeable gap for the samples (up to 130 mm size), computer controlled horizontal and vertical rotation and sufficiently big space for the sample holders. The system has been developed in cooperation with the INCDIE ICPE CA, Bucharest, Romania and CIPEC SRL, Bucharest, Romania for JINR Dubna, Russia.

Keywords: Electromagnet, YuMo spectrometer.