Design of a 14 T Actively Shielded Superconducting Magnet for Animal MRI

被引：0

作者：

Huang, Weican ^{[1
]}

Jiang, Xiaohua ^{[1
]}

Chai, Guolin ^{[1
]}

Huang, Xianrui ^{[2
]}

Zou, Qingyu ^{[2
]}

Li, Ye ^{[3
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China

[2] Philips Healthcare Suzhou Co Ltd, Suzhou 215134, Peoples R China

[3] Chinese Acad Sci, Shenzhen Inst Adv Technol, Paul C Lauterbur Imaging Res Ctr, Shenzhen 518000, Peoples R China

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2025年 / 35卷 / 05期

关键词：

Coils; Magnetic resonance imaging; Superconducting magnets; Magnetic shielding; Magnetic noise; Magnetomechanical effects; Stress; Magnetic fields; Wires; Aluminum; High magnetic field; magnetic resonance imaging; NbaSn; superconducting magnets;

D O I：

10.1109/TASC.2024.3520092

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A 14 T actively shielded animal MRI magnet has been designed and is currently under construction. The magnet has a warm bore of 175 mm diameter and consists of Nb3Sn and NbTi solenoid coils. This paper presents the results of electromagnetic, structural and quench protection designs of the magnet. The magnetic field homogeneity is 0.9 ppm within a 60 mm diameter of spherical volume. The distance of 5 Gauss line from the magnet center is 2.4 m radially and 2.9 m axially. Stress analysis shows that the maximum axial and circumferential stresses in the coils are -73 MPa and 144 MPa, respectively. Under the worst quench scenarios, the maximum hotspot temperature and inter-layer voltage in the coils are constrained to 169 K and 720 V, respectively.

引用

页数：5

共 15 条

[1] MEASUREMENTS OF QUENCH VELOCITY IN ADIABATIC NBTI AND NBSN COILS - COMPARISON BETWEEN THEORY AND EXPERIMENTS IN SMALL MODEL COILS AND LARGE MAGNETS [J].

BACCAGLIONI, G ;

CANALI, M ;

ROSSI, L ;

SORBI, M .

IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (04) :2677-2680

[2] MEASUREMENTS OF Nb3Sn CONDUCTOR DIMENSION CHANGES DURING HEAT TREATMENT [J].

Bocian, D. ;

Ambrosio, G. ;

Whitson, G. M. .

ADVANCES IN CRYOGENIC ENGINEERING, VOL 58, 2012, 1435 :193-200

[3] Protection Circuit and Quench Simulation of a 7 T Superconducting Magnet for Animal MRI [J].

Chen, Jiangbo ;

Jiang, Xiaohua .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2013, 23 (03)

[4] Stress Analysis of a 7 T Actively Shielded Superconducting Magnet for Animal MRI [J].

Chen, Jiangbo ;

Jiang, Xiaohua .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2012, 22 (03)

[5]

Haacke E.M., 2014, Magnetic Resonance Imaging: Physical Principles and Sequence Design, Vsecond, DOI [10.1002/9781118633953, DOI 10.1002/9781118633953]

[6]

Huang X. H., J. Tsinghua Univ. (Sci. Technol.), DOI [10.16511/j.cnki.qhdxxb.2024.21.026, DOI 10.16511/J.CNKI.QHDXXB.2024.21.026]

[7] Technology challenges of 14 T whole-body superconducting MRI magnets- A target of high-field superconducting magnet technology for large scale applications in next decade [J].

Jiang Xiao-Hua ;

Xue Peng ;

Huang Wei-Can ;

Li Ye .

ACTA PHYSICA SINICA, 2021, 70 (01)

[8] IMAGE FORMATION BY INDUCED LOCAL INTERACTIONS - EXAMPLES EMPLOYING NUCLEAR MAGNETIC-RESONANCE [J].

LAUTERBUR, PC .

NATURE, 1973, 242 (5394) :190-191

[9] An Optimization Design Method of Actively Shielded MRI Superconducting Magnets With Robustness Analysis [J].

Liang, Jiaqi ;

Jiang, Xiaohua ;

Li, Hu ;

Wei, Xinxin .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2009, 19 (03) :1282-1285

[10]

Liu A.F., 2005, Mechanics and Mechanisms of Fracture: An Introdutction

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