Title :
A superconducting linear motor drive for a positive displacement bellows pump for use in the g-2 cryogenics system
Author_Institution :
Lawrence Berkeley Lab., CA, USA
fDate :
6/1/1995 12:00:00 AM
Abstract :
Forced two-phase cooling of indirectly cooled superconducting magnets requires circulation of liquid helium through the magnet cooling channel. A bellows helium pump is one possible way of providing helium flow to a magnet cooling system. Since the bellows type of helium pump is immersed in liquid helium, a superconducting linear motor drive appears to be an attractive option. This report describes a linear motor drive that employs oriented permanent magnet materials such as samarium-cobalt as the stator magnet system and a superconducting loudspeaker voice coil type of drive as the armature of the linear motor. This report examines drive motor requirements for a helium pump.<>
Keywords :
cooling; cryogenics; design engineering; linear motors; machine theory; motor drives; permanent magnet motors; pumps; rotors; stators; superconducting machines; superconducting magnets; SmCo; armature; circulation; design theory; forced two-phase cooling; g-2 cryogenics system; liquid helium; magnet cooling channel; permanent magnet materials; positive displacement bellows pump; stator magnet system; superconducting linear motor drive; superconducting loudspeaker voice coil type-drive; superconducting magnets; Bellows; Cooling; Cryogenics; Magnetic materials; Motor drives; Permanent magnet motors; Superconducting coils; Superconducting magnets; Superconducting materials;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
