The Iseult/Inumac Whole Body 11.7 T MRI Magnet R&D Program

被引：21

作者：

Schild, T. ^{[1
]}

Maksoud, W. Abdel ^{[1
]}

Aubert, G. ^{[1
]}

Belorgey, J. ^{[1
]}

Bermond, S. ^{[1
]}

Berriaud, C. ^{[1
]}

Bredy, P. ^{[1
]}

Chesny, Ph. ^{[1
]}

Donati, A. ^{[1
]}

Dubois, O. ^{[1
]}

Gilgrass, G. ^{[2
]}

Guillard, J. C. ^{[1
]}

Hervieu, B. ^{[1
]}

Juster, F. P. ^{[1
]}

Lannou, H. ^{[1
]}

Mayri, C. ^{[1
]}

Meuris, C. ^{[1
]}

Molinie, F. ^{[1
]}

Nunio, F. ^{[1
]}

Quettier, L. ^{[1
]}

Scola, L. ^{[1
]}

Sinanna, A. ^{[1
]}

Tellier, O. ^{[1
]}

Vedrine, P. ^{[1
]}

机构：

[1] CEA Saclay, Irfu, F-91191 Gif Sur Yvette, France

[2] Siemens Magnet Technol, Witney OX29 4BP, England

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2010年 / 20卷 / 03期

关键词：

Magnetic resonance imaging; niobium titanium; superconducting magnet;

D O I：

10.1109/TASC.2010.2040149

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 neuroscience research center with very high field MRI equipments has been opened in November 2006 by the CEA life science division. One of the imaging systems will require a 11.75 T magnet with a 900 mm warm bore. Regarding the large aperture and field strength, this magnet is a real challenge when compared to the largest MRI systems ever built, it is being developed within an ambitious R&D program, Iseult, focused on high field MRI. The conservative MRI magnet design principles are not readily applicable, other concepts taken from high energy physics or fusion experiments, namely the Tore Supra tokamak magnet system, will be used. The coil will thus be made of a niobium-titanium conductor cooled by a He II bath at 1.8 K, permanently connected to a cryoplant. Due to the high level of stored energy, about 340 MJ, and a relatively high nominal current, about 1500 A, the magnet will be operated in a non-persistent mode with a conveniently stabilized power supply. In order to take advantage of superfluid helium properties and regarding the high electromagnetic stresses on the conductors, the winding will be made of wetted double pancakes meeting the Stekly criterion for cryostability. The magnet will be actively shielded to fulfill the specifications regarding the stray field. In order to develop the magnet design on an experimental basis, an ambitious R&D program has been set-up based on magnet prototypes, high field test facility (Seht) and stability experiments. The main results from these experiments and their impact on the Iseult magnet design will be discussed.

引用

页码：702 / 705

页数：4

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