EP0348403B1 - Systeme de deflexion magnetique pour particules chargees - Google Patents

Systeme de deflexion magnetique pour particules chargees Download PDF

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Publication number
EP0348403B1
EP0348403B1 EP88901560A EP88901560A EP0348403B1 EP 0348403 B1 EP0348403 B1 EP 0348403B1 EP 88901560 A EP88901560 A EP 88901560A EP 88901560 A EP88901560 A EP 88901560A EP 0348403 B1 EP0348403 B1 EP 0348403B1
Authority
EP
European Patent Office
Prior art keywords
coils
deflection
path
field
plane
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.)
Expired - Lifetime
Application number
EP88901560A
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German (de)
English (en)
Other versions
EP0348403A1 (fr
Inventor
Berthold Krevet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karlsruher Institut fuer Technologie KIT
Original Assignee
Kernforschungszentrum Karlsruhe GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kernforschungszentrum Karlsruhe GmbH filed Critical Kernforschungszentrum Karlsruhe GmbH
Publication of EP0348403A1 publication Critical patent/EP0348403A1/fr
Application granted granted Critical
Publication of EP0348403B1 publication Critical patent/EP0348403B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
    • H05H7/04—Magnet systems, e.g. undulators, wigglers; Energisation thereof
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/08—Deviation, concentration or focusing of the beam by electric or magnetic means
    • G21K1/093—Deviation, concentration or focusing of the beam by electric or magnetic means by magnetic means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures

Definitions

  • the invention relates to a magnetic deflection system for charged particles according to the preamble of claim 1.
  • and B
  • the magnetic field must be as large as possible to generate small deflection radii.
  • a technically feasible limit is 1.8 T. Higher fields can be reached with superconducting coils.
  • Coil concepts for superconducting deflection magnets are described therein, in which the magnetic guide field perpendicular to the nominal path plane is generated with coils, the winding surfaces of which are arranged parallel to the nominal path plane.
  • the winding surfaces have two long sides that run parallel to the particle path and two short sides that cross the particle spell.
  • the required magnetic field is generated by electrical currents that run parallel to the particle path.
  • the currents crossing the particle path cause a field increase with exclusive field reversal. Both cause a severe rail disruption. This effect is greater the closer the winding packets are brought to the particle path.
  • the path disturbances are reduced by leading the winding areas crossing the particle path away from the target path plane. This results in complicated coil geometries with considerable manufacturing problems, especially when using superconductors.
  • DE-A 2 318 507 describes the manufacture of elongated, saddle-shaped coils or partial coils lying on the outside of a hollow cylindrical body, and in particular the manufacture of the immovable coil ends or winding heads leading over the particle path. In this case, considerable mechanical effort must be applied to manufacture in order to keep the coil ends immovable in their position.
  • Superconducting coils are manufactured according to the bias principle to prevent a conductor movement, which is one of the causes of a quench.
  • a conductor enclosing the winding surface runs through an outer radius> r0 and an inner radius ⁇ r0, where r0 represents the deflection radius. No pre-tension can be applied in the area of the inner radius when winding the coil.
  • the pretension must be achieved by gripping the coil system.
  • an arrangement is required in which the synchrotron light generated emerges tangentially from the magnet system in the plane of the orbit of the particles can.
  • only clips that do not completely enclose the coil system may be used.
  • Such clip elements are known from DE-C-35 11 282. It describes a superconducting magnet system for particle accelerators of a synchrotron radiation source, in which the winding surfaces of the coils are arranged parallel to the nominal path plane and the windings cross the particle path.
  • the invention is based on the object of specifying a magnet concept for the magnetic deflection system mentioned at the outset, which can be implemented while reducing the design effort and which simplifies the use of superconducting coils by means of a simple manufacturing technique.
  • the advantages achieved by the coil arrangement according to the invention are essentially to be seen in the fact that the coils can be manufactured according to the pretensioning principle, in that the conductor is wound with tensile stress in conventional technology and the winding packages on the magnet ends are not guided over the particle path.
  • a sufficiently large gap is available for leading out the synchrotron radiation without having to do without clips, if these should not be superfluous anyway due to the winding technology.
  • the magnetic deflection system consists of 4 coils 1, 2, 3, 4, the spatial arrangement of which can be seen from the (x, y, z) coordinate system shown.
  • the nominal path plane S E lies in the (x, z) plane in which the deflection path between the sinks and parallel to them passes through the coordinate jump.
  • the winding surfaces with the curvature r ⁇ r0 adapted to the nominal path are aligned perpendicular to the nominal path plane S E.
  • Fig. 2 shows a section through the coil system in the (x, y) plane.
  • the surface A0 spanned by the magnetic guide field and the deflection radius r0 is shown schematically, which perpendicularly intersects the nominal path plane S E lying in the (x, z) plane.
  • the coils 1, 2, 3, 4 are arranged on both sides of the surface A an labor so that they do not intersect the surface A0.
  • the winding surfaces of the coils 1, 2, 3, 4 are, as shown here, aligned parallel to the surface A0.
  • Fig. 3 shows a winding of the deflection system, which consists of a double pancake. It is a winding technique that is preferably used in the manufacture of superconducting windings.
  • the winding disc 5 with the smaller radius of curvature r1 ⁇ r0 is first produced and uses the second winding disc 6 with the radius of curvature r2> r1 during winding.
  • the conductor can always be wound under tension. If required, several double pancakes can be connected in series to form a winding package.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Particle Accelerators (AREA)

Abstract

Système de déflexion magnétique (1-4) pour particules chargées, comportant un agencement de bobines pour générer un champ de guidage magnétique, ledit champ se situant verticalement sur le plan de la trajectoire théorique (SE) et guidant les particules sur une trajectoire de déflexion selon le rayon de déflexion ro. Les bobines produisant le champ de guidage magnétique sont agencées de telle manière que les enroulements ne croisent pas la trajectoire des particules.

Claims (2)

  1. Système de déflexion magnétique de particules chargées avec une implantation de bobines destinée à produire un champ magnétique de guidage perpendiculaire au plan de la trajectoire théorique, grâce auquel les particules sont guidées sur une trajectoire de déflexion avec le rayon de déflexion r₀ dans le plan théorique SE, caractérisé en ce qu'on dispose au moins deux bobines placées l'une au-dessus de l'autre de chaque côté d'une surface A₀ définie par le sens du champ magnétique de guidage et par la trajectoire de déflexion de sorte que les faces d'enroulement des bobines se développent parallèlement à la surface AO, tandis qu'au moins deux des bobines sont au-dessus et au moins deux sont au-dessous du plan théorique de trajectoire SE et qu'ainsi le champ de déflexion dans le domaine de la trajectoire théorique s'évanouit à l'extrémité des bobines sans pic de champ et sans inversion consécutive de champs.
  2. Système de déflexion magnétique selon la revendication 1, caractérisé en ce que les bobines sont constituées au moins d'une double bobine.
EP88901560A 1987-02-19 1988-02-18 Systeme de deflexion magnetique pour particules chargees Expired - Lifetime EP0348403B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3705294 1987-02-19
DE19873705294 DE3705294A1 (de) 1987-02-19 1987-02-19 Magnetisches ablenksystem fuer geladene teilchen

Publications (2)

Publication Number Publication Date
EP0348403A1 EP0348403A1 (fr) 1990-01-03
EP0348403B1 true EP0348403B1 (fr) 1994-03-30

Family

ID=6321329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88901560A Expired - Lifetime EP0348403B1 (fr) 1987-02-19 1988-02-18 Systeme de deflexion magnetique pour particules chargees

Country Status (5)

Country Link
US (1) US4902993A (fr)
EP (1) EP0348403B1 (fr)
JP (1) JPH02502684A (fr)
DE (1) DE3705294A1 (fr)
WO (1) WO1988006394A1 (fr)

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DE4000666C2 (de) * 1989-01-12 1996-10-17 Mitsubishi Electric Corp Elektromagnetanordnung für einen Teilchenbeschleuniger
JP2529492B2 (ja) * 1990-08-31 1996-08-28 三菱電機株式会社 荷電粒子偏向電磁石用コイルおよびその製造方法
US5463291A (en) * 1993-12-23 1995-10-31 Carroll; Lewis Cyclotron and associated magnet coil and coil fabricating process
AU694296B2 (en) † 1994-10-13 1998-07-16 American Superconductor Corporation Variable profile superconducting magnetic coil
GB9813327D0 (en) * 1998-06-19 1998-08-19 Superion Ltd Apparatus and method relating to charged particles
CN101061759B (zh) * 2004-07-21 2011-05-25 斯蒂尔瑞弗系统有限公司 用于同步回旋加速器的可编程的射频波形发生器
EP2389977A3 (fr) 2005-11-18 2012-01-25 Still River Systems, Inc. Radiothérapie à particules chargées
US8003964B2 (en) * 2007-10-11 2011-08-23 Still River Systems Incorporated Applying a particle beam to a patient
US8581523B2 (en) * 2007-11-30 2013-11-12 Mevion Medical Systems, Inc. Interrupted particle source
US8933650B2 (en) * 2007-11-30 2015-01-13 Mevion Medical Systems, Inc. Matching a resonant frequency of a resonant cavity to a frequency of an input voltage
DE102008009494A1 (de) * 2008-02-15 2009-08-27 Fachhochschule Dortmund Vorrichtung zur Erfassung der Konzentration und/oder der Größenverteilung von elektrisch geladenen Partikeln in Gasströmen, insbesondere von Rußpartikeln in Dieselabgasen
GB2478265B (en) * 2008-09-03 2013-06-19 Superion Ltd Apparatus and method relating to the focusing of charged particles
CN108770178B (zh) 2012-09-28 2021-04-16 迈胜医疗设备有限公司 磁场再生器
CN104813749B (zh) 2012-09-28 2019-07-02 梅维昂医疗系统股份有限公司 控制粒子束的强度
JP6254600B2 (ja) 2012-09-28 2017-12-27 メビオン・メディカル・システムズ・インコーポレーテッド 粒子加速器
ES2739634T3 (es) 2012-09-28 2020-02-03 Mevion Medical Systems Inc Control de terapia de partículas
JP6121544B2 (ja) 2012-09-28 2017-04-26 メビオン・メディカル・システムズ・インコーポレーテッド 粒子ビームの集束
US10254739B2 (en) 2012-09-28 2019-04-09 Mevion Medical Systems, Inc. Coil positioning system
EP2900325B1 (fr) 2012-09-28 2018-01-03 Mevion Medical Systems, Inc. Réglage de l'énergie d'un faisceau de particules
TW201422278A (zh) 2012-09-28 2014-06-16 Mevion Medical Systems Inc 粒子加速器之控制系統
JP6523957B2 (ja) 2012-09-28 2019-06-05 メビオン・メディカル・システムズ・インコーポレーテッド 磁場を変更するための磁性シム
US8791656B1 (en) 2013-05-31 2014-07-29 Mevion Medical Systems, Inc. Active return system
US9730308B2 (en) 2013-06-12 2017-08-08 Mevion Medical Systems, Inc. Particle accelerator that produces charged particles having variable energies
ES2768659T3 (es) 2013-09-27 2020-06-23 Mevion Medical Systems Inc Exploración de haces de partículas
US9962560B2 (en) 2013-12-20 2018-05-08 Mevion Medical Systems, Inc. Collimator and energy degrader
US10675487B2 (en) 2013-12-20 2020-06-09 Mevion Medical Systems, Inc. Energy degrader enabling high-speed energy switching
US9661736B2 (en) 2014-02-20 2017-05-23 Mevion Medical Systems, Inc. Scanning system for a particle therapy system
US9950194B2 (en) 2014-09-09 2018-04-24 Mevion Medical Systems, Inc. Patient positioning system
US10786689B2 (en) 2015-11-10 2020-09-29 Mevion Medical Systems, Inc. Adaptive aperture
WO2018009779A1 (fr) 2016-07-08 2018-01-11 Mevion Medical Systems, Inc. Planification de traitement
US11103730B2 (en) 2017-02-23 2021-08-31 Mevion Medical Systems, Inc. Automated treatment in particle therapy
WO2018201279A1 (fr) * 2017-05-02 2018-11-08 中国科学院合肥物质科学研究院 Structure d'aimant-dipôle supraconductrice, dispositif de transport et appareil médical
WO2019006253A1 (fr) 2017-06-30 2019-01-03 Mevion Medical Systems, Inc. Collimateur configurable commandé au moyen de moteurs linéaires
EP3934752A1 (fr) 2019-03-08 2022-01-12 Mevion Medical Systems, Inc. Administration de radiothérapie par colonne et génération d'un plan de traitement associé

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2341922A1 (fr) * 1976-02-17 1977-09-16 Cgr Mev Perfectionnement a un dispositif de balayage d'une cible par un faisceau de particules chargees
JPS5572019A (en) * 1978-11-25 1980-05-30 Toshiba Corp Preparation of saddle type multi-wound coil
DE3505281A1 (de) * 1985-02-15 1986-08-21 Siemens AG, 1000 Berlin und 8000 München Magnetfelderzeugende einrichtung
DE3661672D1 (en) * 1985-06-24 1989-02-09 Siemens Ag Magnetic-field device for an apparatus for accelerating and/or storing electrically charged particles
EP0276360B1 (fr) * 1987-01-28 1993-06-09 Siemens Aktiengesellschaft Dispositif magnétique à bobines courbées

Also Published As

Publication number Publication date
EP0348403A1 (fr) 1990-01-03
DE3705294A1 (de) 1988-09-01
WO1988006394A1 (fr) 1988-08-25
US4902993A (en) 1990-02-20
DE3705294C2 (fr) 1993-06-09
JPH02502684A (ja) 1990-08-23

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