Patent ID: 8319588
Filing Date: 2012-11-27
Classification: G01R,H01F

Abstract:
1. A hollow cylindrical thermal shield for a tubular cryogenically cooled superconducting magnet having a first axis and comprising an annular coil, comprising: an inner cylindrical tube having an axis aligned with the first axis; an outer cylindrical tube of a diameter greater than a diameter of the inner cylindrical tube and having an axis aligned with the first axis; annular end pieces joining the inner cylindrical tube and the outer cylindrical tube to form an enclosure; and a cylindrical stiffener extending axially at least part of an axial length of the inner cylindrical tube, the stiffener having a radially inner diameter greater than a radially outer diameter of the annular coil and being joined at intervals to the inner cylindrical tube such that the inner cylindrical tube lies radially within the annular coil, while the stiffener lies radially outside of the annular coil, to thereby improve mechanical rigidity of the inner cylindrical tube.