Low thermal conductance support for a radiation shield in a MR m

Details Low thermal conductance support for a radiation shield in a MR m Low thermal conductance support for a radiation shield in a MR m

1988-07-05

1990-06-19

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

335216, 324318, 505 1, H01F 722

Patent

active

049357140

ABSTRACT:
A low thermal conductance support for a radiation shield in a magnetic resonance magnet is provided. Spacer means are situated partially in apertures in a cylindrical coil form having superconducting windings supported from a vacuum vessel. The spacer means are spaced away from the aperture walls and are secured at one end to the coil form. The spacer means protrude radially beyond the coil form surface and contact a radiation shield. The length of the spacer means is greater than the distance between the surface of the coil form and shield thereby increasing the thermal conduction path length between form and shield.

REFERENCES:
patent: 4492090 (1985-01-01), Laskaris
patent: 4595899 (1986-06-01), Smith et al.
patent: 4652824 (1987-03-01), Oppelt
patent: 4721934 (1988-01-01), Stacy

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