Removable coil form for superconducting nmr magnets and a method for its use

U.S. Patent Number: 5332988

Abstract: A superconducting coil is mounted on a permanent non-magnetic coil form by first winding an unreacted wire onto a temporary coil form made of refractory materials which can be assembled and disassembled, reacting the wound unreacted wire at high temperatures to form a superconducting coil. The temporary coil form is disassembled and the superconducting coil is transferred to a permanent coil form made of a non-magnetic material. The temporary coil form includes a bore tube and an end flange made of a refractory material and a terminal flange made of a non-magnetic refractory material. The terminal flange is removably secured to the bore tube. The end flange is positioned next to the other end of the bore tube and held in position against the tube by means of an end plate. A terminal plate is removably positioned adjacent to the bore tube. The assembly is held together by means of an axial force on the terminal and end plates. The superconductor wire can be wound around the outer surface of the bore tube to form a superconducting coil.

Inventors: Zhukovsky; Alexander (Brighton, MA), Iwasa; Yukikazu (Weston, MA), Bobrov; Emanual (Cambridge, MA), Williams; John E. C. (Wayland, MA)

Assignee: Massachusetts Institute of Technology (Cambridge, MA)

Application Number: 07/884,634

Issued: 1994-07-26

Expired: 2006-07-26

Classes: 335/216 ; 242/430; 336/208; 336/DIG.1

Field of search: 335/216,250,299 336/198,DIG.1,208 242/118,1,50 140/92.1,92.2

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