High Magnetic Field Superconducting Magnet for 400 MHz Nuclear Magnetic Resonance Spectrometer
Applied Superconductivity, IEEE Transactions（2011）
摘要
A superconducting magnet with the center field of 9.4 T is designed and fabricated for 400 MHz Nuclear Magnetic Resonance. Superconducting coil with NbTi/Cu superconducting wire is employed and cooled by re-condensed liquid helium and the magnet system with the clear-bore of 54 mm. The pulsed tube refrigerator with separated valve is employed to cool the magnet system. The superconducting magnet has an active shield with high pure copper shield to protect during quench of the shielding coil. The paper reports the electromagnetic design, and fabrication is detailed.
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关键词
frequency 400 mhz,nmr spectrometers,pulsed tube refrigerator,separated valve,re-condensed liquid helium magnet system,superconducting wire,ptr cryocooler,quenching (thermal),superconducting coil,electromagnetic fabrication,electromagnetic design,nuclear screening,superconducting magnets,shielding coil,copper alloys,titanium alloys,re-condensed liquid helium,superconducting coils,nuclear magnetic resonance,niobium alloys,nbti-cu,nuclear magnetic resonance spectrometer,magnetic fields,high magnetic field superconducting magnet,liquid helium,wires,separated rotary valve,magnetic shielding,copper,indexing terms
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