초록 ▼

A cryostat (1) with a magnet coil system including superconductors for the production of a magnet field B0 in a measuring volume (3) within a room temperature bore (2) of the cryostat has a plurality of radially nested solenoid-shaped coil sections (4, 5, 6) which surround the room temperature bore

A cryostat (1) with a magnet coil system including superconductors for the production of a magnet field B0 in a measuring volume (3) within a room temperature bore (2) of the cryostat has a plurality of radially nested solenoid-shaped coil sections (4, 5, 6) which surround the room temperature bore and which are electrically connected in series, at least one of which being an LTS section (5, 6) with a conventional low temperature superconductor (LTS) and at least one of which being an HTS section (4) including a high temperature superconductor (HTS), wherein the LTS section (5, 6) is located in a helium tank (9) of the cryostat (1) along with liquid helium at a helium temperature TL. The apparatus is characterized in that the HTS section (4) is disposed radially within the LTS section (5, 6) in a vacuum portion of the cryostat and is separated from the LTS section (5, 6) by the helium tank (9) wall (9a) facing the room temperature bore. The HTS coil section can be reliably used in the cryostat over a long period of time (FIG. 1a).

대표청구항 ▼

I claim: 1. A cryostat and magnet coil system, the magnet coil system having a plurality of radially nested superconducting solenoid-shaped coil sections surrounding a room temperature bore defined by the cryostat, the coil sections being electrically connected in series for production of a magnet f

I claim: 1. A cryostat and magnet coil system, the magnet coil system having a plurality of radially nested superconducting solenoid-shaped coil sections surrounding a room temperature bore defined by the cryostat, the coil sections being electrically connected in series for production of a magnet field B0 in a measuring volume within the room temperature bore, the cryostat and magnet coil system comprising:a helium tank for holding liquid helium at a helium temperature TL, said helium tank having a wall facing the room temperature bore of the cryostat;an LTS section of a conventional low temperature superconductor (LTS) disposed in said helium tank at said helium temperature TL;means defining a vacuum portion of the cryostat; andat least one HTS section disposed radially within said LTS section and within said vacuum portion of the cryostat, said HTS section being separated from said LTS section by said wall of said helium tank facing said room temperature bore.