EP0276360A2 - Dispositif magnétique à bobines courbées - Google Patents

Dispositif magnétique à bobines courbées Download PDF

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Publication number
EP0276360A2
EP0276360A2 EP87111574A EP87111574A EP0276360A2 EP 0276360 A2 EP0276360 A2 EP 0276360A2 EP 87111574 A EP87111574 A EP 87111574A EP 87111574 A EP87111574 A EP 87111574A EP 0276360 A2 EP0276360 A2 EP 0276360A2
Authority
EP
European Patent Office
Prior art keywords
winding
magnet device
windings
coil windings
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
EP87111574A
Other languages
German (de)
English (en)
Other versions
EP0276360A3 (en
EP0276360B1 (fr
Inventor
Helmut Marsing
Andreas Dr. Jahnke
Konrad Meier
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0276360A2 publication Critical patent/EP0276360A2/fr
Publication of EP0276360A3 publication Critical patent/EP0276360A3/de
Application granted granted Critical
Publication of EP0276360B1 publication Critical patent/EP0276360B1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
    • 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
    • H05H7/06—Two-beam arrangements; Multi-beam arrangements storage rings; Electron rings

Definitions

  • the invention relates to a magnet device in a curved section of the path of electrically charged particles of an accelerator system, the magnet device being arranged around a beam guiding chamber surrounding the particle path and containing curved coil windings which have convexly shaped outer sides, concave-shaped inner sides and transition areas on the end windings between them Have sides and are made up of superconducting rectangular conductors.
  • a superconducting coil winding for such a magnetic device is e.g. from EP-A-0 190 623.
  • Accelerator systems for charged particles such as Electrons often have storage rings which, because of their curved particle paths, are to be provided with appropriately curved dipole magnets. Such systems can in particular also be of the so-called racetrack type. Your particle path is then composed of two semicircles, each with a corresponding 180 ° deflection magnet, and of two straight path sections (cf. "Nucl. Instrum. And Meth.”, Vol. 177, 1980, pages 411 to 416, or Vol. 204 , 1982, pages 1 to 20). If high end energies are aimed for, the magnetic fields of such deflection magnets can be generated in particular with superconducting coil windings.
  • the synchrotron radiation source known from DE-OS 35 30 446 also has an electron storage ring of the racetrack type.
  • the synchrotron radiation ie the relativistic radiation emission of the electrons, which circulate almost at the speed of light and are deflected in a magnetic field on the specified particle path are maintained, provides X-rays with parallel radiation characteristics and high intensity.
  • This synchrotron radiation can advantageously be used for an X-ray lithography, which is particularly suitable for the production of integrated circuits for the production of microstructures.
  • Corresponding windings can be built up, for example, from superconducting rectangular conductors using a method as can be seen from EP-A mentioned at the beginning. Accordingly, the conductors are wound around a central winding core with a convex outside and a concave inside, as well as a transition area in between, on a winding head and fixed. The result is a winding lying in one plane, the individual turns of which are lined up radially in this plane with respect to the radius of curvature of the winding. The windings produced are then arranged in the magnet device in such a way that their winding planes are at least largely parallel to the plane defined by the particle path.
  • the invention is therefore based on the object of improving the magnetic device of the type mentioned in such a way that the risk of such conductor displacement is significantly reduced.
  • the advantages associated with a corresponding configuration of the magnetic device are to be seen in particular in the fact that radial movements of the superconducting rectangular conductors can be practically excluded by an exact manufacture and position of the groove cross sections which are vertical with respect to the particle path plane.
  • the windings can be formed in a saddle-like manner, bent vertically upwards or downwards with a relatively small radius of curvature. Any such movements there are correspondingly less critical because of the greater distance from the particle path.
  • a vertical prestress can be exerted on the individual conductor stacks in the grooves in a known manner. In this way, changes in length of the conductors and, in particular, displacements of their ends can largely be excluded.
  • a problem in the design of magnetic devices with high demands on the field homogeneity is also the fault-free position of the power supply lines at the conductor ends. Since the disturbing influence decreases with the distance to the particle path, the supply lines can advantageously leave the windings at the winding heads. In this way, the effect of the feed lines is negligible, while the curvature of the entire winding packages upwards or downwards can easily be taken into account when designing the field.
  • FIG. 1 schematically shows part of a synchrotron radiation source with a magnet device designed according to the invention.
  • FIGS. 2 and 3 each schematically illustrate an embodiment of a partial winding for such a magnetic device.
  • This magnetic device contains on both sides of the equatorial plane E spanned by the particle path 2 and lying in the xy direction of a right-angled xyz coordinate system, a curved superconducting dipole coil winding 4 or 5 and possibly additional superconducting coil windings such as correction coil windings 6.
  • the superconducting coil windings with convex The outside, concave inside and winding heads between these sides are advantageously held in structurally identical upper and lower frame structures 7 and 8, which are to be joined together in the equatorial plane E and thereby accommodate a beam guiding chamber 10 enclosing the particle path 2.
  • a dipole field B of sufficient quality is formed within this chamber 10.
  • the chamber 10 extends radially or tangentially to the outside an equatorial outlet chamber 12 which is open on one side and has an outlet opening or mouth 13 for the synchrotron radiation indicated by an arrow 14.
  • the outlet chamber can in particular be slit-shaped, the corresponding slit being able to make up the entire 180 ° arc of the curved particle path section.
  • the individual superconducting dipole coil windings 4 and 5 are located at least with their winding parts defining the convex outside and concave inside in azimuthally circumferential grooves 20 of appropriately designed individual coil formers 15 and 16 made of metal or plastic composite material. These coil formers are fitted into an upper or lower frame piece 17 or 18 of the respective frame structure 7 or 8 and are held perpendicular to the equatorial xy plane E with screws 19.
  • the winding structure can advantageously take place from the respective slot base of the coil body in the direction of the equatorial plane E or in the opposite direction.
  • a graduated bracket part 21 or 22 secures the exact distances and positions of the respective winding edges to the equatorial plane on the one hand, and on the other hand increases the rigidity of the entire construction with a positive fit with the coil formers 15 and 16 and the frame pieces 17 and 18 radially directed Lorentz forces.
  • the clamp parts 21 and 22 can also compress the individual windings with the aid of screws 23 and 24 and thus conductor movements during the operation of the magnet device 3, which lead to a premature, undesirable transition of the superconducting material into the normal conducting state, ie to a so-called quenching of the windings can prevent.
  • stamp-like pressure strips 27 on the respective slot base are used for this purpose, which are to be pressed against the respective winding parts by means of screws 28.
  • the winding inside the slots can be pressed together vertically from two sides.
  • the windings or parts of them can optionally be cast in the slots.
  • the frame pieces 17 and 18 of the frame structures 7 and 8 are rigidly connected to an upper and lower plate element 31 and 32, respectively. This ensures a very precise positioning of the individual superconducting coil windings 4 to 6 relative to the particle track 2.
  • the upper and lower plate elements 31 and 32 of the frame structures 7 and 8 are braced against ring-like, force-transmitting distributor pieces 34 and 35.
  • the slot-like outlet chamber 12 extends outwards between these distributor pieces.
  • the mutual distance and a force support between the distributor pieces 34 and 35 is ensured by at least one support element 40, which is located radially further outside than the mouth of the outlet opening 13. Since the distributor pieces 34 and 35 form parts of a cold helium housing 42 for receiving liquid helium for cooling the superconducting coil windings within a cryostat, the support element 40 running between them is also at this temperature.
  • the suspension and positioning elements of the magnetic device which are not shown in the figure, can also advantageously be connected directly to the ver within a vacuum housing of the cryostat, which is also not shown Partitions 34 and 35 and thus in close proximity to the superconducting coil windings 4 to 6. This brings with it a correspondingly high positioning accuracy of the windings with respect to the particle path.
  • the portion of the synchrotron radiation 14 striking the support element 40 is collected by a radiation absorber 46, which is expediently cooled.
  • Liquid nitrogen is to be regarded as the preferred cryogenic refrigeration medium.
  • each of the coil windings 4 and 5 is made up of a plurality of sub-windings which surround one another in a shell-like manner.
  • three such partial windings each represent a coil winding.
  • One of these partial windings which largely corresponds to the winding of the coil winding 4 designated by 4a in FIG. 1, is illustrated in more detail in FIG. 2 as an oblique view.
  • This partial winding, identified by 4a ist is created from a superconducting rectangular conductor 50, with which so-called "pancakes" 51 are formed from two turns each arranged in a layer next to one another.
  • the rectangular conductor 50 is inserted layer by layer with its broad side in grooves corresponding to the adapted radial expansion.
  • the resulting winding package is then fixed in the grooves, which are not shown in the figure for reasons of clarity.
  • These grooves run in at least one bobbin, also not shown, in such a way that the curved shape of the partial winding 4a ⁇ results with a convex outer side 53 and a concave inner side 54.
  • Two winding heads are formed in the two transition regions between these sides 53 and 54. Of these end windings, only one is shown in the figure and designated 55 ⁇ .
  • the winding head 55 Wick of the partial winding 4a ⁇ is not in a common plane with the the sides 53 and 54 forming curved winding parts 57 and 58.
  • the common plane for the winding parts 57 and 58 is parallel to the plane spanned by the x and y coordinates of the xyz coordinate system according to FIG. 1.
  • the partial winding 4a ⁇ in the area of the winding head 55 ⁇ is bent up like a saddle relative to this common plane or in the manner of a bed frame, that is to say it is led out of this plane.
  • the winding can be bent there so far that it comes to lie in a vertical plane which runs parallel to the plane spanned by the x and z planes of the coordinate system.
  • a relatively small radius of curvature or curvature can advantageously be provided.
  • the two curved winding parts of the partial winding 4a ⁇ need not, as assumed in Figure 2, be arranged in a common plane that is parallel to that through the Particle trajectory runs at a defined level. As can be seen clearly from FIG. 1, the two curved winding parts can also come to lie in two different planes at different distances from the particle path plane.
  • a corresponding embodiment of the partial winding 4a can be seen in FIG. 3, for which a representation corresponding to FIG. 2 is selected.
  • the partial winding 4a which is only partially implemented in FIG. 3, contains a curved winding part 64 which forms the concave inside 54 and runs in a first plane E1.
  • this plane is, for example, the x-y plane of a right-angled x-y-z coordinate system.
  • a winding part 63 running parallel to this winding part 64 and forming the convex outer side 53 of the partial winding 4a then lies in a parallel second plane E2, which is spaced apart from the plane E1 by a distance d.
  • this distance can be compensated, for example, on the end winding 55 by providing a straight intermediate piece 66 running in the z-direction with a corresponding expansion between curved winding parts.
  • the intermediate piece 66 is to be assigned to the inner winding part 64 for level compensation in relation to the outer winding part 63.
  • the magnetic device according to the invention can be advantageous according to the exemplary embodiment indicated in FIG. 1 for a synchrotron radiation source with a radial outlet opening for the synchrotron radiation can be designed.
  • the measures according to the invention can also be used just as well for other types of accelerator systems with curved tracks with their electrically charged particles.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (AREA)
  • Power Engineering (AREA)
  • Particle Accelerators (AREA)
EP87111574A 1987-01-28 1987-08-10 Dispositif magnétique à bobines courbées Expired - Lifetime EP0276360B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3702389 1987-01-28
DE3702389 1987-01-28

Publications (3)

Publication Number Publication Date
EP0276360A2 true EP0276360A2 (fr) 1988-08-03
EP0276360A3 EP0276360A3 (en) 1989-07-26
EP0276360B1 EP0276360B1 (fr) 1993-06-09

Family

ID=6319641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111574A Expired - Lifetime EP0276360B1 (fr) 1987-01-28 1987-08-10 Dispositif magnétique à bobines courbées

Country Status (4)

Country Link
US (1) US4769623A (fr)
EP (1) EP0276360B1 (fr)
JP (1) JPS63188908A (fr)
DE (1) DE3786158D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993006607A1 (fr) * 1991-09-25 1993-04-01 Siemens Aktiengesellschaft Ensemble bobine avec extremites torsadees, constitue d'un conducteur en fils supraconducteurs

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DE3705294A1 (de) * 1987-02-19 1988-09-01 Kernforschungsz Karlsruhe Magnetisches ablenksystem fuer geladene teilchen
JPH0763037B2 (ja) * 1987-03-11 1995-07-05 日本電信電話株式会社 空芯型偏向電磁石
JPH0763036B2 (ja) * 1987-03-11 1995-07-05 日本電信電話株式会社 リタ−ンヨ−ク付き偏向電磁石
US4939493A (en) * 1988-09-27 1990-07-03 Boston University Magnetic field generator
US5117212A (en) * 1989-01-12 1992-05-26 Mitsubishi Denki Kabushiki Kaisha Electromagnet for charged-particle apparatus
US4969064A (en) * 1989-02-17 1990-11-06 Albert Shadowitz Apparatus with superconductors for producing intense magnetic fields
DE4029477C2 (de) * 1989-09-29 1994-06-01 Siemens Ag Tesserale Gradientenspule für Kernspin-Tomographiegeräte
JP2944317B2 (ja) * 1992-07-28 1999-09-06 三菱電機株式会社 シンクロトロン放射光源装置
CN1282215C (zh) * 2003-06-10 2006-10-25 清华大学 一种电子束的束流引导装置
EP3557956A1 (fr) 2004-07-21 2019-10-23 Mevion Medical Systems, Inc. Générateur de forme d'onde de fréquence radio programmable pour un synchrocyclotron
EP1764132A1 (fr) * 2005-09-16 2007-03-21 Siemens Aktiengesellschaft Procédé et dispositif pour la configuration d'une trajectoire de faisceau d'un système de thérapie par faisceau de particules
ES2730108T3 (es) 2005-11-18 2019-11-08 Mevion Medical Systems Inc Radioterapia de partículas cargadas
US7432516B2 (en) * 2006-01-24 2008-10-07 Brookhaven Science Associates, Llc Rapid cycling medical synchrotron and beam delivery system
DE102006018635B4 (de) * 2006-04-21 2008-01-24 Siemens Ag Bestrahlungsanlage mit einem Gantry-System mit einem gekrümmten Strahlführungsmagneten
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
WO2013101294A1 (fr) * 2011-05-19 2013-07-04 The Regents Of The University Of California Aimant torique à fonction combinée
EP2901821B1 (fr) 2012-09-28 2020-07-08 Mevion Medical Systems, Inc. Régénérateur de champ magnétique
CN104813747B (zh) 2012-09-28 2018-02-02 梅维昂医疗系统股份有限公司 使用磁场颤振聚焦粒子束
EP2900326B1 (fr) 2012-09-28 2019-05-01 Mevion Medical Systems, Inc. Commande de thérapie par particules
JP6121545B2 (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 粒子ビームのエネルギーの調整
EP2901823B1 (fr) 2012-09-28 2021-12-08 Mevion Medical Systems, Inc. Contrôle de l'intensité d'un faisceau de particules
EP2901824B1 (fr) 2012-09-28 2020-04-15 Mevion Medical Systems, Inc. Éléments d'homogénéisation de champ magnétique permettant d'ajuster la position de la bobine principale et procédé correspondant
US10254739B2 (en) 2012-09-28 2019-04-09 Mevion Medical Systems, Inc. Coil positioning system
TW201422278A (zh) 2012-09-28 2014-06-16 Mevion Medical Systems Inc 粒子加速器之控制系統
TW201422279A (zh) 2012-09-28 2014-06-16 Mevion Medical Systems Inc 聚焦粒子束
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
EP3049151B1 (fr) 2013-09-27 2019-12-25 Mevion Medical Systems, Inc. Balayage par un faisceau de particules
US10675487B2 (en) 2013-12-20 2020-06-09 Mevion Medical Systems, Inc. Energy degrader enabling high-speed energy switching
US9962560B2 (en) 2013-12-20 2018-05-08 Mevion Medical Systems, Inc. Collimator and energy degrader
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
US9793036B2 (en) * 2015-02-13 2017-10-17 Particle Beam Lasers, Inc. Low temperature superconductor and aligned high temperature superconductor magnetic dipole system and method for producing high magnetic fields
CN106199471B (zh) 2015-05-04 2019-10-01 通用电气公司 部分折叠的梯度线圈单元及装置
US10786689B2 (en) 2015-11-10 2020-09-29 Mevion Medical Systems, Inc. Adaptive aperture
US10925147B2 (en) 2016-07-08 2021-02-16 Mevion Medical Systems, Inc. Treatment planning
US11103730B2 (en) 2017-02-23 2021-08-31 Mevion Medical Systems, Inc. Automated treatment in particle therapy
JP6940676B2 (ja) 2017-06-30 2021-09-29 メビオン・メディカル・システムズ・インコーポレーテッド リニアモーターを使用して制御される構成可能コリメータ
EP3934751B1 (fr) 2019-03-08 2024-07-17 Mevion Medical Systems, Inc. Collimateur et dégradeur d'énergie pour système de thérapie par particules
CN113744993B (zh) * 2021-08-30 2022-06-28 中国科学院合肥物质科学研究院 kA级大载流高温超导双饼线圈的绕制成型装置及方法

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US4667174A (en) * 1985-08-23 1987-05-19 Resonex, Inc. Magnet assembly for magnetic resonance imaging and method of manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993006607A1 (fr) * 1991-09-25 1993-04-01 Siemens Aktiengesellschaft Ensemble bobine avec extremites torsadees, constitue d'un conducteur en fils supraconducteurs
US5387891A (en) * 1991-09-25 1995-02-07 Siemens Aktiengesellschaft Coil configuration having twisted ends and being made of a conductor with superconducting filaments

Also Published As

Publication number Publication date
EP0276360A3 (en) 1989-07-26
US4769623A (en) 1988-09-06
DE3786158D1 (de) 1993-07-15
EP0276360B1 (fr) 1993-06-09
JPS63188908A (ja) 1988-08-04

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