Patent ID: 7559205
Filing Date: 2009-07-14
Classification: G01R,H01F

Abstract:
1. A substantially cylindrical former for a solenoidal magnet, in combination with a cryogen tank for containing a cryogen for cooling the former, wherein: the cryogen tank comprises a substantially toroidal or cylindrical enclosure that is enclosed by outer surfaces thereof and is coaxial with the former: the former is situated outside of said enclosure: an outer surface of the cryogen tank is in thermal contact with and mechanically attached to the former; the former comprises an inner part having a first diameter and at least one outer part having a second diameter greater than the first diameter; and the cryogen tank is substantially housed within a substantially toroidal volume that is coaxial with the former, and has an outer diameter equal to the second diameter, and an inner diameter equal to the first diameter.