EP1182462A3 - Dimensioning of a magnet arrangement with an additional current carrying coil system - Google Patents

Dimensioning of a magnet arrangement with an additional current carrying coil system Download PDF

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Publication number
EP1182462A3
EP1182462A3 EP01115747A EP01115747A EP1182462A3 EP 1182462 A3 EP1182462 A3 EP 1182462A3 EP 01115747 A EP01115747 A EP 01115747A EP 01115747 A EP01115747 A EP 01115747A EP 1182462 A3 EP1182462 A3 EP 1182462A3
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EP
European Patent Office
Prior art keywords
coil system
eff
current
carrying
magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01115747A
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German (de)
French (fr)
Other versions
EP1182462A2 (en
EP1182462B1 (en
Inventor
Robert Schauwecker
Pierre-Alain Bovier
Andreas Amann
Werner Tschopp
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Bruker Biospin SAS
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Bruker Biospin SAS
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Publication of EP1182462A2 publication Critical patent/EP1182462A2/en
Publication of EP1182462A3 publication Critical patent/EP1182462A3/en
Application granted granted Critical
Publication of EP1182462B1 publication Critical patent/EP1182462B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils

Abstract

Bei einer Magnetanordnung (M, D, P1, ..., Pn) mit einem Magnetspulensystem (M) mit mindestens einer stromführenden supraleitenden Magnetspule, einem weiteren stromführenden Spulensystem (D), welches durch eine externe Stromquelle gespeist werden kann und im Arbeitsvolumen ein von null wesentlich verschiedenes Magnetfeld aufbaut, und ggf. mit zusätzlichen supraleitend geschlossenen Strompfaden (P1, ..., Pn), wobei die durch die zusätzlichen Strompfade (P1 ..., Pn) im Betriebszustand aufgrund von induzierten Strömen erzeugten Magnetfelder in z-Richtung und das Feld des stromführenden Spulensystems die Größenordnung von 0.1 Tesla im Arbeitsvolumen nicht überschreiten, ist das weitere Spulensystem (D) so ausgelegt ist, dass g eff D > 1.2 · g eff,cl D , wobei

Figure 80000001
g eff,cl D = g D - g T · Lcl -1 · L cl ←D . In a magnet arrangement (M, D, P1 ,..., Pn) with a magnet coil system ( M ) having at least one current-carrying superconducting magnet coil, another current-carrying coil system ( D ) which can be fed by an external current source and in the working volume one of zero substantially different magnetic field builds, and possibly with additional superconductingly closed current paths ( P1 , ..., Pn), wherein the magnetic fields generated by the additional current paths ( P1 ..., Pn) in the operating state due to induced currents in the z direction and the field of the current-carrying coil system does not exceed the order of 0.1 Tesla in the working volume, the further coil system (D) is designed so that G eff D > 1.2 · G eff, cl D . in which
Figure 80000001
G eff, cl D = G D - G T · L cl -1 · L cl ← D ,

Dadurch kann ein weiteres Spulensystem (D) gegenüber einem herkömmlich dimensionierten Spulensystem (M) mit einfachen und unaufwändigen Mitteln so modifiziert werden, dass die effektive Feldeffizienz g eff / D des weiteren Spulensystems (D) unter Berücksichtigung des Diamagnetismus des Supraleiters im Magnetspulensystem (M) möglichst groß ist.

Figure 00000001
In this way, a further coil system (D) can be modified with simple and inexpensive means compared to a conventionally dimensioned coil system (M) in such a way that the effective field efficiency g eff / D of the further coil system (D) takes into account the diamagnetism of the superconductor in the magnet coil system (M). as big as possible.
Figure 00000001
EP01115747A 2000-08-24 2001-07-09 Dimensioning of a magnet arrangement with an additional current carrying coil system Expired - Lifetime EP1182462B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10041672 2000-08-24
DE10041672A DE10041672C2 (en) 2000-08-24 2000-08-24 Magnet arrangement with an additional current-carrying coil system and method for dimensioning it

Publications (3)

Publication Number Publication Date
EP1182462A2 EP1182462A2 (en) 2002-02-27
EP1182462A3 true EP1182462A3 (en) 2003-08-27
EP1182462B1 EP1182462B1 (en) 2006-06-07

Family

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Family Applications (1)

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EP01115747A Expired - Lifetime EP1182462B1 (en) 2000-08-24 2001-07-09 Dimensioning of a magnet arrangement with an additional current carrying coil system

Country Status (4)

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US (1) US6680662B2 (en)
EP (1) EP1182462B1 (en)
JP (1) JP2002158108A (en)
DE (2) DE10041672C2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7064550B2 (en) * 2004-11-16 2006-06-20 General Electric Company Method and apparatus for field drift compensation of a superconducting magnet
KR100635885B1 (en) * 2004-12-14 2006-10-18 한국기초과학지원연구원 A design method of superconducting magnet with high homogeneous magnetic field
US7098663B1 (en) * 2005-03-18 2006-08-29 Timothy James Hollis Systems, methods and apparatus of an actively shielded superconducting magnet drift compensation coil
US8692539B2 (en) * 2006-11-30 2014-04-08 Powersense A/S Faraday effect current sensor
DE102007021463B4 (en) 2007-05-08 2012-05-16 Bruker Biospin Ag Superconducting magnet arrangement with hysteresis-free field coil
EP2148210A1 (en) * 2008-07-21 2010-01-27 PowerSense A/S 3-phase Faraday optical current sensor assembly
CN102640010B (en) * 2009-12-02 2015-11-25 纳纳利塞斯公司 For generation of the method and apparatus of uniform magnetic field
CN107530026B (en) * 2015-05-12 2021-10-01 海珀菲纳股份有限公司 Radio frequency coil method and apparatus

Citations (4)

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Publication number Priority date Publication date Assignee Title
US5329266A (en) * 1990-07-24 1994-07-12 Oxford Magnet Technology Ltd. Magnet assembly
US5428292A (en) * 1994-04-29 1995-06-27 General Electric Company Pancake MRI magnet with modified imaging volume
JPH08273923A (en) * 1995-03-30 1996-10-18 Hitachi Ltd Superconducting magnet device for nmr analyzer and its operating method
JP2000147082A (en) * 1998-11-16 2000-05-26 Kobe Steel Ltd Persistent current superconducting magnet

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GB8330198D0 (en) * 1983-11-11 1983-12-21 Oxford Magnet Tech Magnet assembly
US4506247A (en) * 1984-05-23 1985-03-19 General Electric Company Axisymmetric correction coil system for NMR magnets
JPH0738333B2 (en) * 1987-07-03 1995-04-26 三菱電機株式会社 Magnetic field generator
JPH0590022A (en) * 1991-09-27 1993-04-09 Hitachi Cable Ltd Superconducting magnet system
US5633588A (en) * 1994-09-16 1997-05-27 Hitachi Medical Corporation Superconducting magnet apparatus using superconducting multilayer composite member, method of magnetizing the same and magnetic resonance imaging system employing the same
JPH09190913A (en) * 1996-01-10 1997-07-22 Hitachi Medical Corp Superconducting magnet device and magnetic resonance imaging apparatus using this device
JPH11164820A (en) * 1997-12-05 1999-06-22 Hitachi Medical Corp Superconducting magnet
JP2000262486A (en) * 1999-03-17 2000-09-26 Hitachi Ltd Device and method for generating static magnetic field
DE19940694C1 (en) * 1999-08-27 2001-07-26 Bruker Ag Faellanden Actively shielded superconducting magnet arrangement with Z · 2 · shim
DE10041677C2 (en) * 2000-08-24 2002-07-11 Bruker Ag Faellanden Additional current paths to optimize the interference behavior of a superconducting magnet arrangement and method for dimensioning it

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5329266A (en) * 1990-07-24 1994-07-12 Oxford Magnet Technology Ltd. Magnet assembly
US5428292A (en) * 1994-04-29 1995-06-27 General Electric Company Pancake MRI magnet with modified imaging volume
JPH08273923A (en) * 1995-03-30 1996-10-18 Hitachi Ltd Superconducting magnet device for nmr analyzer and its operating method
JP2000147082A (en) * 1998-11-16 2000-05-26 Kobe Steel Ltd Persistent current superconducting magnet

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CROZIER S ET AL: "A COMPACT SUPERCONDUCTING MAGNET FOR MAGNETIC RESONANCE MICROSCOPY", REVIEW OF SCIENTIFIC INSTRUMENTS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 69, no. 2, PART 1, 1 February 1998 (1998-02-01), pages 448 - 451, XP000772670, ISSN: 0034-6748 *
KIYOSHI T ET AL: "Development of 1 GHz superconducting NMR magnet at TML/NRIM", 1998 APPLIED SUPERCONDUCTIVITY CONFERENCE, PALM DESERT, CA, USA, 13-18 SEPT. 1998, vol. 9, no. 2, pt.1, IEEE Transactions on Applied Superconductivity, June 1999, IEEE, USA, pages 559 - 562, XP002244474, ISSN: 1051-8223 *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 02 28 February 1997 (1997-02-28) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 08 6 October 2000 (2000-10-06) *

Also Published As

Publication number Publication date
DE10041672A1 (en) 2002-03-21
US6680662B2 (en) 2004-01-20
EP1182462A2 (en) 2002-02-27
EP1182462B1 (en) 2006-06-07
JP2002158108A (en) 2002-05-31
DE10041672C2 (en) 2002-07-11
DE50110010D1 (en) 2006-07-20
US20030095021A1 (en) 2003-05-22

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