Spinning Dipole

We mounted an oblate magnet on a rotating feedthrough and were able to obtain nearly 10 revolutions per second. The bias was applied through a rotating collar several magnet diameters below the magnet, so as to not disturb the electric potentials. We spun the magnet while biassing it and obtained the data in table . We did not find any qualitatively different effects on the plasma discharge while rotating the magnet up to several revolutions per second. As we reported in SS1, the only effect observed was not on the plasma discharge, but on the field-aligned discharges, which involve outgassing from the magnet. The rate of these discharges remained constant but the distribution changed, perhaps due to a changed outgassing profile.