Thermal busbar assembly in a cryostat dual penetration for refrigerated superconductive magnets

• US 5,222,366 A
• Filed: 02/10/1992
• Issued: 06/29/1993
• Est. Priority Date: 02/10/1992
• Status: Expired due to Term

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Laskaris, Evangelos T., Herd, Kenneth G.
• Primary Examiner(s): Capossela, Ronald C.
• Application Number:
  US07/833,225
• Time in Patent Office: 505 Days
• Field of Search: 62/51.1, 505/892
• US Class Current: 62/51.1
• CPC Class Codes: F25D 19/006 Thermal coupling structure or interface
• CPC Class Codes: H01F 6/04 Cooling
• CPC Class Codes: Y10S 505/892 Magnetic device cooling

Abstract

This invention relates to thermal busbar assemblies in a cryostat dual penetration for refrigerated superconductive magnets. Such structures of this type, generally, allow heat to be conducted from the refrigerated superconductive magnet to the refrigeration cold head while isolating the magnet from the vibration created by the cold head.

Claims

1. A thermal busbar assembly for refrigerated superconductive magnets, said assembly comprised of:

a vacuum enclosure means;

a thermal shield means;

a superconductive magnet;

a first and second heat station means;

a lead busbar means electrically connected to said magnet means and thermally connected to said first heat station means;

a first thermal busbar means thermally connected to said magnet means and said second heat station means; and

a second thermal busbar means thermally connected to said thermal shield means and said first heat station means.

2. The assembly, according to claim 1, wherein said lead busbar means is further comprised of:

copper strip laminated with superconductor materials.

3. The assembly, according to claim 1, wherein said first and second thermal busbar means are further comprised of:

laminated copper sheets.

4. The assembly, according to claim 1, wherein said assembly is further comprised of:

cold heads thermally connected to said first and second heat station means.

5. The assembly, according to claim 1, wherein said assembly is further comprised of:

first, second and third support tube means.

6. The assembly, according to claim 1, wherein said assembly is further comprised of:

a thermal stack means located adjacent to said vacuum enclosure.

7. The assembly, according to claim 6, wherein said first support tube means is rigidly attached to said thermal stack means.

8. The assembly, according to claim 6, wherein said second support tube means is rigidly connected to said first heat station means.

9. The assembly, according to claim 1, wherein said assembly is further comprised of:

a cold bellows means which is rigidly attached to said first and second heat station means.

10. The assembly, according to claim 1, wherein said assembly is further comprised of:

an insulation means substantially located between said enclosure means and said first heat station means.

11. The assembly, according to claim 6, wherein said first and second support tube means are further comprised of:

a flexible connection means located between said first and second support tube means.

12. The assembly, according to claim 6, wherein said assembly is further comprised of:

a first thermal shield means rigidly and thermally attached to said first tube means.

13. The assembly, according to claim 12, wherein said third support tube means is located adjacent to said first and second heat station means.