EP1182463A3 - Dimensioning of additional current paths for optimising the fault behaviour of a superconducting magnet arrangement - Google Patents

Dimensioning of additional current paths for optimising the fault behaviour of a superconducting magnet arrangement Download PDF

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Publication number
EP1182463A3
EP1182463A3 EP01115748A EP01115748A EP1182463A3 EP 1182463 A3 EP1182463 A3 EP 1182463A3 EP 01115748 A EP01115748 A EP 01115748A EP 01115748 A EP01115748 A EP 01115748A EP 1182463 A3 EP1182463 A3 EP 1182463A3
Authority
EP
European Patent Office
Prior art keywords
current paths
magnet
magnet arrangement
additional
coil
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
EP01115748A
Other languages
German (de)
French (fr)
Other versions
EP1182463A2 (en
EP1182463B1 (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 date
Application filed by Bruker Biospin SAS filed Critical Bruker Biospin SAS
Publication of EP1182463A2 publication Critical patent/EP1182463A2/en
Publication of EP1182463A3 publication Critical patent/EP1182463A3/en
Application granted granted Critical
Publication of EP1182463B1 publication Critical patent/EP1182463B1/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

Eine supraleitende Magnetanordnung zur Erzeugung eines Magnetfeldes in Richtung einer z-Achse in einem um z = 0 angeordneten Arbeitsvolumen mit mindestens einer stromführenden Magnetspule (M) und mit mindestens einem zusätzlichen, supraleitend geschlossenen Strompfad (P1, ..., Pn), welcher induktiv auf Änderungen des magnetischen Flusses durch die von ihm umschlossene Fläche reagieren kann, wobei die durch diese zusätzlichen Strompfade im Betriebszustand aufgrund von induzierten Strömen erzeugten Magnetfelder in z-Richtung im Arbeitsvolumen die Größenordnung von 0.1 Tesla betragsmäßig nicht überschreiten, ist dadurch gekennzeichnet, dass die Magnetspule(n) und die Strompfade derart ausgelegt ist (sind), dass bei Einsatz einer zusätzlichen Störspule (D), welche im Magnetvolumen im Wesentlichen ein homogenes Störfeld erzeugt, die Größe

Figure 80000001
sich um mehr als 0.1 von einem Wert
Figure 80000002
unterscheidet, welcher resultieren würde, wenn α = 0 wäre. Dadurch kann eine herkömmlich berechnete Magnetanordnung mit einfachen und unaufwändigen Mitteln so modifiziert werden, dass das Störverhalten des Magnetsystems unter Berücksichtigung des Diamagnetismus des Supraleiters korrekt optimiert wird.
Figure 00000001
A superconducting magnet arrangement for generating a magnetic field in the direction of a z- axis in a working volume arranged at z = 0 with at least one current-carrying magnet coil ( M ) and with at least one additional, superconductingly closed current path ( P1 , ..., Pn), which inductively is responsive to changes in the magnetic flux through the area enclosed by it, wherein the magnetic fields generated by these additional current paths in the z-direction in the working volume due to induced currents amount not to exceed the order of 0.1 Tesla, is characterized in that the magnetic coil (s), and the current paths is designed such (are) that with the use of an additional disturbance coil (D), which generates in the magnet volume is substantially a homogeneous disturbance field, the size
Figure 80000001
by more than 0.1 of a value
Figure 80000002
which would result if α = 0. As a result, a conventionally calculated magnet arrangement can be modified with simple and uncomplicated means in such a way that the disturbance behavior of the magnet system is correctly optimized taking into account the diamagnetism of the superconductor.
Figure 00000001
EP01115748A 2000-08-24 2001-07-09 Dimensioning of additional current paths for optimising the fault behaviour of a superconducting magnet arrangement Expired - Lifetime EP1182463B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10041677 2000-08-24
DE10041677A DE10041677C2 (en) 2000-08-24 2000-08-24 Additional current paths to optimize the interference behavior of a superconducting magnet arrangement and method for dimensioning it

Publications (3)

Publication Number Publication Date
EP1182463A2 EP1182463A2 (en) 2002-02-27
EP1182463A3 true EP1182463A3 (en) 2003-08-13
EP1182463B1 EP1182463B1 (en) 2006-06-14

Family

ID=7653694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01115748A Expired - Lifetime EP1182463B1 (en) 2000-08-24 2001-07-09 Dimensioning of additional current paths for optimising the fault behaviour of a superconducting magnet arrangement

Country Status (4)

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US (1) US6476700B2 (en)
EP (1) EP1182463B1 (en)
JP (1) JP3761802B2 (en)
DE (2) DE10041677C2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6489872B1 (en) * 1999-05-06 2002-12-03 New Mexico Resonance Unilateral magnet having a remote uniform field region for nuclear magnetic resonance
DE10041672C2 (en) * 2000-08-24 2002-07-11 Bruker Ag Faellanden Magnet arrangement with an additional current-carrying coil system and method for dimensioning it
DE10046182C2 (en) * 2000-09-19 2002-08-01 Bruker Ag Faellanden Magnet arrangement with a superconducting magnet coil system and a magnetic field shaping device and method for dimensioning
DE10060284C2 (en) * 2000-12-05 2003-07-17 Bruker Biospin Ag Faellanden Magnet arrangement with an actively shielded superconducting magnet coil system and an additional current path for suppression of stray fields in the case of quenching
JP3701616B2 (en) * 2002-03-06 2005-10-05 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Magnetic resonance imaging device
DE10227876B4 (en) * 2002-06-22 2006-11-09 Bruker Biospin Ag Active shielded, superconducting magnet arrangement with improved stray field compensation
US6960914B2 (en) * 2003-06-27 2005-11-01 Ge Medical Systems Global Technology Company, Llc Methods and apparatus for imaging systems
US7116535B2 (en) * 2004-04-16 2006-10-03 General Electric Company Methods and apparatus for protecting an MR imaging system
DE102004023073B3 (en) * 2004-05-11 2006-01-05 Bruker Biospin Gmbh Magnetic system with shielded regenerator housing and method for operating such a magnet system
US7098663B1 (en) * 2005-03-18 2006-08-29 Timothy James Hollis Systems, methods and apparatus of an actively shielded superconducting magnet drift compensation coil
DE102007021463B4 (en) * 2007-05-08 2012-05-16 Bruker Biospin Ag Superconducting magnet arrangement with hysteresis-free field coil
CN117574740B (en) * 2024-01-17 2024-03-29 中国人民解放军陆军装甲兵学院 Optimization method of permanent magnet magnetic field in circular tube

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0138270A2 (en) * 1983-10-14 1985-04-24 Koninklijke Philips Electronics N.V. Nuclear magnetic resonance apparatus
US4968961A (en) * 1987-08-26 1990-11-06 Hitachi, Ltd. Superconducting magnet assembly with suppressed leakage magnetic field
US4974113A (en) * 1988-03-16 1990-11-27 President And Fellows Of Harvard College Shielding superconducting solenoids
US5329266A (en) * 1990-07-24 1994-07-12 Oxford Magnet Technology Ltd. Magnet assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299325B1 (en) * 1987-07-17 1991-12-18 Siemens Aktiengesellschaft Actively shielded supraconducting magnet of a nuclear spin tomographic apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0138270A2 (en) * 1983-10-14 1985-04-24 Koninklijke Philips Electronics N.V. Nuclear magnetic resonance apparatus
US4968961A (en) * 1987-08-26 1990-11-06 Hitachi, Ltd. Superconducting magnet assembly with suppressed leakage magnetic field
US4974113A (en) * 1988-03-16 1990-11-27 President And Fellows Of Harvard College Shielding superconducting solenoids
US5329266A (en) * 1990-07-24 1994-07-12 Oxford Magnet Technology Ltd. Magnet assembly

Also Published As

Publication number Publication date
JP2002158109A (en) 2002-05-31
EP1182463A2 (en) 2002-02-27
JP3761802B2 (en) 2006-03-29
US6476700B2 (en) 2002-11-05
DE10041677C2 (en) 2002-07-11
US20020044034A1 (en) 2002-04-18
EP1182463B1 (en) 2006-06-14
DE10041677A1 (en) 2002-03-21
DE50110118D1 (en) 2006-07-27

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