A cryocooler-cooled Bi-2212 superconducting magnet with a practical size of room temperature (RT) bore has generated static and alternating magnetic fields. The magnet has generated static magnetic fields up to 1.02T in the RT bore continuously for more than 30min. The alternating magnetic fields with frequencies up to 0.5Hz have been generated for 2h. As the typical results, the alternating magnetic fields with the peak magnetic fields, which are equal to twice as large as the respective magnetic field amplitudes, of 0.65 and 1.00T have been stably generated with frequencies up to 0.5 and 0.025Hz, respectively.
