Experimental Study for the Quench Protection System of the 9.4-T Whole-Body MRI Superconducting Magnet

Author

Li, Yuhua ; Wang, Qijie ; Chen, S. ; Dai, Yun ; Lei, Yunwen ; Song, Seunghyun ; Bao, Q. ; Zhang, Leiqi ; Wang, Lingfeng ; Feng, Zheyun ; Zhu, Xinen ; Ni, Zhen ; Hu, Xiaonan

Author_Institution

Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China

Volume

23

Issue

6

fYear

2013

fDate

Dec. 2013

Firstpage

26

Lastpage

33

Abstract

The quench protection system with the circuit subdivision and heater network for a whole-body magnetic resonance imaging superconducting magnet has been designed. A test magnet with the similar quench protection design was built. Quench experiments for the test magnet have been conducted to verify a quench simulation code that is used to optimize the quench protection design. The fabrication of the test magnet has been demonstrated. The experimental results have been analyzed. The comparison between the experimental data and the calculated results has been discussed. The quench protection method with the heater network proves to work well, and the quench simulation code is proved to be reliable.

Keywords

Coils; Heating; Magnetic circuits; Magnetic resonance imaging; Superconducting magnets; Thermal quenching; Wires; Heater; quench protection; quench simulation; superconducting magnet;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2013.2275759

Filename

6590004