Title :
Design of a superconducting magnetic suspension system for a liquid helium flow experiment
Author :
Smith, M.R. ; Eyssa, Y.M. ; Van Scivrr, S.W.
Author_Institution :
Nat. High Magnetic Field Lab., Tallahassee, FL, USA
fDate :
6/1/1997 12:00:00 AM
Abstract :
We discuss a preliminary design for a superconducting magnetic suspension system for measurement of drag on rotationally symmetric bodies in liquid helium. Due to its diamagnetic properties, a superconducting model (for example made or coated with Nb) is inherently stable against disturbances. In addition, drag measurement may be achieved by a passive technique, where the body is allowed to deflect from its neutral position under the influence of drag. The resulting shift in flux is detected via a superconducting pickup coil. The pickup coil may he connected either to a SQUID, or a secondary loop wound around a Hall probe.
Keywords :
SQUIDs; drag; magnetic levitation; superconducting coils; superconducting magnets; wind tunnels; Hall probe; Nb; SQUID; diamagnetic properties; drag measurement; force balance; liquid helium flow experiment; passive technique; rotationally symmetric bodies; secondary loop; superconducting magnetic suspension system; superconducting pickup coil; wind tunnels; Hall effect devices; Helium; Magnetic levitation; Magnetic liquids; Niobium; Position measurement; Rotation measurement; SQUIDs; Superconducting coils; Wounds;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
