Superconducting vibrator for low frequency emission

Feasibility of superconducting magnets use low frequency generators is inve stigated. Namely superconducting magnet system consisting of two coaxial DC coils and operating as a magnetic quadrupole is developed. This system gen erates radial magnetic field up to 1T in "warm" volume of 16 cm in diameter and 20 cm long. In this nearly space-constant field a copper coil is place d at temperature 77K. This coil energized with DC and AC current in 1-100 H z range. Farces and characteristic of the forced vibration of both rotor an d rotor with iron core are calculated and measured. An influence of AC magn etic field of the copper coil on losses in the superconducting windings is analyzed thermocouple inside winding.