Title :
High Magnetic Field Superconducting Magnet for 400 MHz Nuclear Magnetic Resonance Spectrometer
Author :
Wang, Qiuliang ; Zhao, Baozhi ; Song, Shousen ; Cheng, Junsheng ; Li, Yi ; Lei, Yuanzhong ; Dai, Yinming ; Chen, Shunzhong ; Wang, Hui ; Wang, Housheng ; Hu, Xinning ; Cui, Chunyan ; Liu, Haoyang ; Dong, Zengren ; Wang, Chunzhong ; Ni, Zhipeng ; Huang, Ho
Author_Institution :
Appl. Supercond. Lab., Chinese Acad. of Sci., Beijing, China
fDate :
6/1/2011 12:00:00 AM
Abstract :
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.
Keywords :
NMR spectrometers; copper alloys; liquid helium; magnetic fields; niobium alloys; nuclear screening; quenching (thermal); superconducting coils; superconducting magnets; titanium alloys; wires; NbTi-Cu; electromagnetic design; electromagnetic fabrication; frequency 400 MHz; high magnetic field superconducting magnet; nuclear magnetic resonance spectrometer; pulsed tube refrigerator; re-condensed liquid helium magnet system; separated valve; shielding coil; superconducting coil; superconducting wire; Coils; Magnetic noise; Magnetic shielding; Magnetomechanical effects; Nuclear magnetic resonance; Superconducting magnets; Nuclear magnetic resonance; PTR cryocooler; re-condensed liquid helium; separated rotary valve;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2090854
