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

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

382

Lastpage

385

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.614509

Filename

614509