21-25 July 2019
Connecticut Convention Center, Level 6
US/Eastern timezone

C1Po1F-03 [37]: The design and analysis of a superconducting magnet system for high field MRI

22 Jul 2019, 09:00
2h
Level 6, Cryo Expo Exhibit Hall ()

Level 6, Cryo Expo Exhibit Hall

Speaker

Prof. Chao Zhou (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui, China )

Description

A superconducting multi-coil magnet system has been designed, analyzed and optimized, serving as demonstrator for a high filed Magnetic Resonance Imaging (MRI). This work focuses on the design and optimization of superconducting magnet, cryogenic cooling and cryostat systems.
The NbTi magnet system with multi-coils design has been optimized by balancing magnet performance, stability and offered field quality, against material- and cooling cost. The zero boil-off liquid He-cooled and conduction cooling system operated at 4.2 K, are both designed, analyzed and compared. For the cryostat, the space from inner surface of magnet to the room temperature bore should be kept narrow to maintain optimal field amplitude and homogeneity. This leads to the challenge of reconciling the mechanical constraints imposed by the coil geometry with the thermal insulation requirements. A straightforward structural elements is designed but with a high heat in-leak, while a local reinforced structure is also proposed and analyzed to achieve same space with less heat leak but with some manufacture difficulties. Here, the optimized design of the magnet system and its analysis (e.g. magnetic field, mechanical stress, thermal budget, etc.) are presented.

Primary authors

Prof. Chao Zhou (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui, China ) Prof. Jinggang Qin (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui, China ) Mr Tianli Dai (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui, China ) Mr Yuxiang He (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui, China ) Prof. Jiangang Li (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui, China )

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