Drift arm superconducting rf magnet system and high-resolution magnetic resonance spectrometer

摘要

Superconducting rf magnet system (1) for a high-resolution spectrometer of the magnetic resonance, with a cylindrical cryostat (2) with an axial room temperature bore (6) for receiving a sample (8) and a high frequency - transmitter - and detection system (9) in the operation with a superconductingly short-circuited magnetic coil (4) which is in a region within the cryostat (2) is located at a low temperature level, and the sample (8) in the room temperature bore (6) and at the sample location in the operation of a homogeneous, temporally stable magnetic field is intended to produce, which meets the requirements for receiving a high-resolution spectrum of the magnetic resonance is sufficient, wherein the magnetic coil (4) from a low temperature superconducting (= lts) - partial coil (4b, 4c) and a high-temperature superconductor (= hts) - partial coil (4a, 4d), which, by means of a lts - hts - joint (20) and are connected in series from the same power supply unit may be loaded, characterized in that the lts - partial coil (4b, 4c) in a pure lts - circle (14a) by means of a separately lts - switch (15b) can be short-circuited that the hts - partial coil (4a, 4d) in a pure hts - circle (14a) separately..