Patent ID: 7157999

Claim:
A superconducting high-field magnet system for high-resolution magnetic resonance spectroscopy of a sample, the system comprising: a substantially cylindrical cryostat having an axial room temperature bore for receiving the sample; a radio frequency transmitting and detecting system in electromagnetic communication with the sample; and a magnet coil which is superconductingly short-circuited during operation and which is disposed at a low temperature in a region within the cryostat to surround the sample in the room temperature bore and to generate a homogeneous, temporally stable magnetic field at the sample location which is suitable for obtaining a high-resolution magnetic resonance spectrum, said magnet coil having a low-temperature superconducting (LTS) partial coil and a high-temperature superconducting (HTS) partial coil, wherein said LTS partial coil can be separately short-circuited in a pure LTS circuit via an LTS switch, and said HTS partial coil can be separately short-circuited in a pure HTS-circuit via an HTS switch, with both partial coils being connected via an LTS-HTS joint to be charged in series by a common power supply.