A 1 T, 0.33 m bore superconducting magnet operating with cryocoolers at 12 K (for MRI)

M.T.G. van der Laan; R.B. Tax; H.H.J. ten Kate; L.J.M. van de Klundert

doi:10.1109/20.119957

A 1 T, 0.33 m bore superconducting magnet operating with cryocoolers at 12 K (for MRI)

M.T.G. van der Laan, R.B. Tax, H.H.J. ten Kate, L.J.M. van de Klundert

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Abstract

The application of small cryocoolers to cooling a superconducting magnet at 12 K has important advantages, especially for small and medium-size magnets. Simple construction and a helium-free magnet system were obtained. The demonstration magnet developed is a six-coil system with a volume of 75 L and can be regarded as a 1:3 scale MRI magnet. With a current of 100 A, a 1-T central field is generated with a maximum of 1.9 T in the windings. The magnet consists of six coil formers and five aluminum spacing rings, providing easy service and disassembly. The superconductor, a 0.6-mm-diameter Nb3Sn wire, is wound on the thin-walled stainless steel coil formers, after which the coil is heat treated and vacuum impregnated. Afterwards, the coil system is assembled and the electrical and thermal connections are made. At an operating temperature of the demonstration magnet of 12 K the test coil reached its nominal current after a few training quenches

Original language	English
Pages (from-to)	633-636
Number of pages	4
Journal	IEEE transactions on magnetics
Volume	28
Issue number	1
DOIs	https://doi.org/10.1109/20.119957
Publication status	Published - 1992
Event	12th International Conference on Magnet Technology, MT-12 1991 - Leningrad (St. Petersburg), Russian Federation Duration: 24 Jun 1991 → 28 Jun 1991 Conference number: 12

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title = "A 1 T, 0.33 m bore superconducting magnet operating with cryocoolers at 12 K (for MRI)",

abstract = "The application of small cryocoolers to cooling a superconducting magnet at 12 K has important advantages, especially for small and medium-size magnets. Simple construction and a helium-free magnet system were obtained. The demonstration magnet developed is a six-coil system with a volume of 75 L and can be regarded as a 1:3 scale MRI magnet. With a current of 100 A, a 1-T central field is generated with a maximum of 1.9 T in the windings. The magnet consists of six coil formers and five aluminum spacing rings, providing easy service and disassembly. The superconductor, a 0.6-mm-diameter Nb3Sn wire, is wound on the thin-walled stainless steel coil formers, after which the coil is heat treated and vacuum impregnated. Afterwards, the coil system is assembled and the electrical and thermal connections are made. At an operating temperature of the demonstration magnet of 12 K the test coil reached its nominal current after a few training quenches",

author = "{van der Laan}, M.T.G. and R.B. Tax and {ten Kate}, H.H.J. and {van de Klundert}, L.J.M.",

year = "1992",

doi = "10.1109/20.119957",

language = "English",

volume = "28",

pages = "633--636",

journal = "IEEE transactions on magnetics",

issn = "0018-9464",

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note = "12th International Conference on Magnet Technology, MT-12 1991, MT ; Conference date: 24-06-1991 Through 28-06-1991",

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T1 - A 1 T, 0.33 m bore superconducting magnet operating with cryocoolers at 12 K (for MRI)

AU - van der Laan, M.T.G.

AU - Tax, R.B.

AU - ten Kate, H.H.J.

AU - van de Klundert, L.J.M.

N1 - Conference code: 12

PY - 1992

Y1 - 1992

N2 - The application of small cryocoolers to cooling a superconducting magnet at 12 K has important advantages, especially for small and medium-size magnets. Simple construction and a helium-free magnet system were obtained. The demonstration magnet developed is a six-coil system with a volume of 75 L and can be regarded as a 1:3 scale MRI magnet. With a current of 100 A, a 1-T central field is generated with a maximum of 1.9 T in the windings. The magnet consists of six coil formers and five aluminum spacing rings, providing easy service and disassembly. The superconductor, a 0.6-mm-diameter Nb3Sn wire, is wound on the thin-walled stainless steel coil formers, after which the coil is heat treated and vacuum impregnated. Afterwards, the coil system is assembled and the electrical and thermal connections are made. At an operating temperature of the demonstration magnet of 12 K the test coil reached its nominal current after a few training quenches

AB - The application of small cryocoolers to cooling a superconducting magnet at 12 K has important advantages, especially for small and medium-size magnets. Simple construction and a helium-free magnet system were obtained. The demonstration magnet developed is a six-coil system with a volume of 75 L and can be regarded as a 1:3 scale MRI magnet. With a current of 100 A, a 1-T central field is generated with a maximum of 1.9 T in the windings. The magnet consists of six coil formers and five aluminum spacing rings, providing easy service and disassembly. The superconductor, a 0.6-mm-diameter Nb3Sn wire, is wound on the thin-walled stainless steel coil formers, after which the coil is heat treated and vacuum impregnated. Afterwards, the coil system is assembled and the electrical and thermal connections are made. At an operating temperature of the demonstration magnet of 12 K the test coil reached its nominal current after a few training quenches

U2 - 10.1109/20.119957

DO - 10.1109/20.119957

M3 - Article

SN - 0018-9464

VL - 28

SP - 633

EP - 636

JO - IEEE transactions on magnetics

JF - IEEE transactions on magnetics

IS - 1

T2 - 12th International Conference on Magnet Technology, MT-12 1991

Y2 - 24 June 1991 through 28 June 1991

ER -

A 1 T, 0.33 m bore superconducting magnet operating with cryocoolers at 12 K (for MRI)

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