Large high-field spaceborne experimental magnet systems

Currently, several programs are being planned which will place large high intensity magnets in low Earth orbit, i.e., inductive storage for electromagnetic launchers, magnetic spectrometers for cosmic ray studies, and artificial magnetospheres for plasma physics experiments. However, large high field magnets have yet to be operated in space, and possible environmental plasma effects of the magnets are open issues. In this paper the authors discuss design constraints for normal, superconducting, and permanent magnets from the perspective of possible precursors experiments appropriate for various space missions. For the magnetic field, the order (dipole, quadrupole), orientation with respect to Earth field and spacecraft, field intensity, and pulse shape discussed with respect to their impact on the spacecraft design, mission profile, and ground operations. Parametric optimization of the magnet system-cost, weight, size, power, intensity, and pulse shape flexibility are discussed, and estimated achievable performance for the various magnet systems and mission options are given