EP2011127A1 - Gekrümmter strahlführungsmagnet mit sattel- und rennbahnförmigen supraleitenden spulen und bestrahlunsanlage mit einem solchen magneten - Google Patents
Gekrümmter strahlführungsmagnet mit sattel- und rennbahnförmigen supraleitenden spulen und bestrahlunsanlage mit einem solchen magnetenInfo
- Publication number
- EP2011127A1 EP2011127A1 EP07712257A EP07712257A EP2011127A1 EP 2011127 A1 EP2011127 A1 EP 2011127A1 EP 07712257 A EP07712257 A EP 07712257A EP 07712257 A EP07712257 A EP 07712257A EP 2011127 A1 EP2011127 A1 EP 2011127A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- curved
- coils
- magnet
- guiding
- guiding 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
Links
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
-
- 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
- G21K5/00—Irradiation devices
- G21K5/04—Irradiation devices with beam-forming means
Definitions
- the invention relates to a beam guiding magnet for deflecting a beam of electrically charged particles along a curved particle path, the magnet being provided with a path defined by the curved particle path
- a corresponding curved ⁇ ter beam guiding magnet is z.
- the invention further relates to an irradiation system with egg ⁇ nem such curved beam guiding magnet.
- an irradiation system with egg ⁇ nem such curved beam guiding magnet.
- Such a system is z. B. DE 199 04 675 Al.
- Curved beam guidance magnets are used in part ⁇ chenbeschreiberanlagen in deflection and / or focusing of a beam of charged particles such as electrons or ions used.
- such systems can also be designed for radiotherapy in the field of medical technology.
- a corresponding therapy system is shown in the cited DE 199 04 675 A1 or US Pat. No. 4,870,287. It comprises a particle source or a accelerometer ⁇ niger for generating a high-energy particle beam, which ⁇ from the source in the direction of an irradiation axis and on a region to be irradiated a subject such. B. a tumor of a patient is addressed.
- ei ⁇ ne irradiation may be from several sides, the magnet arrangement of the deflecting and focussing magnets is arranged on a frame of the gantry and adapted for rotation about the original direction of radiation as a rotational axis and gantry rotation axis , wherein the exiting beam always passes through a fixed point in the so-called "isocenter” and so can limit the exposure to radiation in the surrounding area or tissue by distribution over a relatively large area.
- Object of the present invention is longitudinally to provide a curved beam guiding magnet for deflecting a beam of electrically charged particles of a curved particle path, in particular for an irradiation system, the back ⁇ its size and weight over entspre ⁇ sponding normal conducting magnet having clearly reduced values.
- a preferred irradiation system is to be specified with such a magnet.
- the beam guiding magnet should be free of ferromagnetic material influencing the beam guidance and should additionally have the following features, namely a) a beam plane defined by the curved particle path, b) a curved one the particle enclosing Strahlon extension tube ⁇ , associated system c) a beam guide tube of at least six in the guiding direction of the particle beam out ⁇ stretched, curved superconducting individual coils, which in pairs in mirror image to the beam guidance plane abandonedbil det ⁇ and are arranged, wherein the coil system comprises at least;
- Swivel frame for the rotation of the magnets to a gantry rotation axis can be advantageously made easier and easier.
- the embodiment can be combined according to claim 1 with the features of one of the subclaims or preferably also those of several subclaims. Accordingly, the beamline magnet of the following features may additionally comprise according to the invention to ⁇ :
- the magnet can advantageously be designed such that its central angle of curvature is between 30 ° and 90 °. wearing. Especially with larger angles of curvature, the advantage of weight reduction and smaller size compared to normal-conducting magnet comes especially to fruition.
- the secondary coils may preferably extend between the bent end parts of their respective associated main coil. In this way, a compact structure of the system can be realized from the individual coils.
- the conductors of the individual windings may comprise known metallic LTC (LoW T c ) superconducting material.
- Corresponding ladder z. B. based on NbTi operate at very low temperatures and generally require a helium cooling technology. They are technically mature and relatively easy to work with.
- the conductors of the single windings can of course also be combined with known metal oxide HTC (High
- T c T c superconducting material to be created.
- Such conductors with preferably strip form ren allow higher Railtemperatu ⁇ which may preferably be in particular between 10 and 40 K from 20 to 30 K.
- the effort is correspondingly reduced.
- known HTC superconductors in the temperature range mentioned for generating strong magnetic fields have sufficiently large critical current carrying capacities or current densities. If a particle beam of C 6+ ions to be deflected is provided, the advantages of weight and size reduction are particularly pronounced in the case of these high-energy particles.
- the beam guiding magnet can advantageously be run so that a magnetic Aperturfeldher of ⁇ min, preferably ben least 2 Tesla 3-5 Tesla, gege ⁇ . Namely, high aperture fields to be produced with superconductors bring with them the stated advantages of weight and size reduction.
- the system has a fixed, a beam electric kusstechniksmagnete charged particle generating source of irradiation, more Fo and at least one beam guidance Magne ⁇ th according to the claimed embodiment, for deflecting the particle beam.
- a system may in particular be characterized by a gantry system with a rotatability of the magnets with respect to a gantry rotation axis lying in the beam guidance plane.
- the use of superconducting single solenoids considerably reduces the size, weight and power requirement of the gantry system compared to conventional systems with normal conducting magnets. In particular, a required bogie to rotate the individual magnets is much easier and easier to perform.
- FIG. 1 shows a beam guiding magnet according to the invention in FIG. 1
- FIG. 2 shows the cross section through a corresponding beam guiding magnet
- FIG. 3 shows a longitudinal section through a corresponding beam guiding magnet
- Figure 4 shows a basic structure of a gantry system using a plurality of curved beam guiding magnets.
- the beamline magnet 2 serves for deflecting a direction indicated by an arrowed line particle beam 3 ⁇ around a center of curvature or arc angle, the preferred Zvi ⁇ 's 30 ° and 90 ° (ie 30 ° ⁇ ⁇ ⁇ 90 °).
- the particle beam 3 is a beam of electrically charged particles, such as ions, in particular C 6+ ions.
- the particle beam is held or guided by means of magnetic forces within a correspondingly curved beam guiding tube 5.
- the curved path of the particle beam sets as ⁇ with a beam guidance plane 6 fixed, which will be indicated in figure 2 by a dashed line.
- superconductors are used to construct the magnet windings or coils of the beam guiding magnet 2.
- known materials for superconductors usable here are known metallic LTC (Low T c ) superconductor materials such.
- a He-cooling technique is required for LTC superconductor generally at, for example, operating temperatures of about 4.2 K higher operating temperatures for example from 10 to 40 K, be preferably from 20 to 30 K before ⁇ , when using HTC superconductors.
- known HTC superconductors to generate the required magnetic field strengths sufficiently high critical current densities.
- To the required cooling of the superconductors can be made of known refrigeration equipment.
- the invention has a system of at least six conductive supra ⁇ individual coils are provided, two of which are formed in pairs in mirror image to the beam guidance plane from 6 ⁇ and arranged.
- the system comprises, on individual coils, two elongated, saddle-shaped, and subsequently main coil These coils each have two curved lateral parts 8a, 8b or 9a, 9b, which extend laterally relative to the beam-guiding tube 5, as well as end-side end parts 8c, 8d or 9c, 9d.
- the end-side end parts are in each case in such a way out of the through the side parts of the
- Bent or cranked plane that they lead around the outside of the beam tube 5 each semicircular arc.
- the design form of corresponding main coils is generally known (see, for example, EP 0 276 360 B1). If necessary, however, other known saddle shapes are suitable, called the lie on a curved cylinder surface ⁇ . That is, the side sections 8a, 8b or 9a, 9b ever need ⁇ wells not exactly ⁇ fen in a non-curved plane to duri and / or the end-side end portions 8c 8db and 9c, 9d respectively need not necessarily be accurately formed semi-circular arc-shaped but may also be parabolic similar Ge ⁇ have Stalt (see. eg., JP 02-246305 A).
- two at least largely flat, bannin-shaped curved, hereinafter referred to as sub-coils ⁇ te coils 10 and 11 are provided in parallel planes lying. These coils are designed as curved racetrack coils and preferably extend between the end-side, winding-winding-like end portions of the main coils 8 and 9.
- the design form of corresponding, for example, about 90 ° curved bana- nenförmiger secondary coils is also known (see, for example, EP 0 185 955 Bl or DE 35 04 211 Al).
- the conductors of the secondary coils 10 and 11 in each case enclose a banana-shaped curved inner region 12 or 13 and there in each case a correspondingly curved, hereinafter referred to as additional coil ⁇ designated 14 and 15 also racecourse type. As is apparent from Figure 2, the winding cross-section of these additional coils
- the individual coils can be assigned more coils to required field conditions z. B. with regard to homogeneity on. However, with the minimum number of six coils, generally satisfactory field conditions can be achieved.
- these thermal insulation means comprise a warm outer housing 17 which is designed as a vacuum or cryostat housing and which encloses a vacuum space 18.
- a cold inner vessel 20 Within this vacuum space is a cold inner vessel 20, in which a holding structure 21 for receiving and fixing the individual superconducting coils is arranged.
- the conductors of the individual superconducting coils in this inner vessel must have the required
- Refrigeration capacity for their cooling for example, provided via a refrigerant in a suitable manner.
- the housing between the cold inner vessel 20 and the warm outer 17 in the vacuum space 18, further, even discreetly cooled isolation means such as radiation shields or insulators ⁇ tion films are provided 22nd
- Figure 3 shows a side plan view of the guide plane in the beam ⁇ made longitudinal section through a entspre ⁇ sponding beam guiding magnet with a bending angle ⁇ 2 of 90 °.
- the leading out of this plane angle heads or end portions of one of the saddle-shaped main coils, for example, the semi-circular arc-like end portions 8c and 8d of the coil 8 are particularly highlighted.
- the support structure 21 for the main coil 8 is provided with special reinforcing ribs 23. These parts are located within the cold inner vessel 20, the z. B. for receiving a liquid refrigerant such as He or Ne serves.
- the inner ⁇ vessel is equipped with end face end flanges 25 and 26. In a corresponding manner, end-face end flanges 27 and 28 are also provided for the warm outer housing 17.
- the secondary coils 10 and 11 and the additional coils 14 and 15 are formed as a completely flat, lying in a plane ⁇ banana-shaped curved racing track coils.
- at least partially these coils are designed only approximately flat. This is understood to mean that the coils can also be bent saddle-shaped at least in the region of their arcuate end parts. The coils are then no longer in a flat plane but on a lateral surface of a cylinder which surrounds the curved beam guide axis 4.
- Such coils can be produced, for example, from initially flat, curved racetrack coils, by then being adapted in a form-fitting manner to the lateral surface of the curved cylinder.
- the curved beam guidance magnet 2 described with reference to FIGS 1 to 3 (z. B. cf. US. 4,870,287 A or JP 2000-075100 A) treatment plants per se for any Bestrah ⁇ for deflecting radiation of any suitable electrically charged particles. It is preferably provided for a gantry system which serves for medical therapy.
- the design features of corresponding systems are likewise generally known (cf., for example, DE 199 04 675 A1 or WO 02/069350 A1).
- Such a system is characterized by the fact that its end-side focusing and deflection magnets are mounted around a gantry Rotation axis are designed to pivot.
- the gantry system generally designated 30, has an irradiation source 31, which is not detailed in the figure, for generating a beam 3 of ions, in particular C 6+ ions. These ions exit the source in a beam steering ⁇ direction, at the same time the gantry rotation axis A fixed ⁇ sets.
- the ion beam 3 is brought into a region remote from the axis A and from there through an inventively formed, for example by 90 ° deflecting deflection or beam guiding magnet 2 is directed in a direction perpendicular to the axis of rotation A direction where it intersects the axis A in an isocenter 35.
- deflection magnets such as
- a 45 ° magnet and a 135 ° magnet or two 30 ° magnets and a 120 "magnet are suitable for use in the FIGURE
- a diagnostic head through which the beam 3 passes and which is magnetically shielded by means of an iron box Beam position and the radiation dose designated 36.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Particle Accelerators (AREA)
- Radiation-Therapy Devices (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006018635A DE102006018635B4 (de) | 2006-04-21 | 2006-04-21 | Bestrahlungsanlage mit einem Gantry-System mit einem gekrümmten Strahlführungsmagneten |
| PCT/EP2007/051642 WO2007122025A1 (de) | 2006-04-21 | 2007-02-21 | Gekrümmter strahlführungsmagnet mit sattel- und rennbahnförmigen supraleitenden spulen und bestrahlunsanlage mit einem solchen magneten |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2011127A1 true EP2011127A1 (de) | 2009-01-07 |
| EP2011127B1 EP2011127B1 (de) | 2011-04-20 |
Family
ID=37951500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07712257A Not-in-force EP2011127B1 (de) | 2006-04-21 | 2007-02-21 | Gekrümmter strahlführungsmagnet mit sattel- und rennbahnförmigen supraleitenden spulen und bestrahlunsanlage mit einem solchen magneten |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20090091409A1 (de) |
| EP (1) | EP2011127B1 (de) |
| AT (1) | ATE506679T1 (de) |
| DE (2) | DE102006018635B4 (de) |
| WO (1) | WO2007122025A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007021033B3 (de) * | 2007-05-04 | 2009-03-05 | Siemens Ag | Strahlführungsmagnet zur Ablenkung eines Strahls elektrisch geladener Teilchen längs einer gekrümmten Teilchenbahn und Bestrahlungsanlage mit einem solchen Magneten |
| DE102007025584B4 (de) * | 2007-06-01 | 2009-05-14 | Siemens Ag | Strahlungsführungsmagnet zur Ablenkung eines Strahls elektrisch geladener Teilchen längs einer gekrümmten Teilchenbahn und Bestrahlungsanlage mit einem solchen Magneten |
| DE102007046508B4 (de) | 2007-09-28 | 2010-01-21 | Siemens Ag | Bestrahlungsanlage mit einem Strahlführungsmagneten |
| DE102007050035B4 (de) * | 2007-10-17 | 2015-10-08 | Siemens Aktiengesellschaft | Vorrichtung und Verfahren zur Ablenkung eines Strahls elektrisch geladener Teilchen auf eine gekrümmte Teilchenbahn |
| WO2009142547A2 (en) * | 2008-05-22 | 2009-11-26 | Vladimir Yegorovich Balakin | Charged particle beam acceleration method and apparatus as part of a charged particle cancer therapy system |
| DE102010012073B4 (de) | 2010-03-19 | 2012-05-31 | Karlsruher Institut für Technologie | Vorrichtung zur Verringerung der Erwärmung einer Vakuumkammer |
| CN103140013B (zh) * | 2013-02-06 | 2015-04-15 | 江苏海明医疗器械有限公司 | 高能电子束消色散偏转装置 |
| CN104124055B (zh) * | 2014-07-17 | 2016-05-04 | 中国科学院近代物理研究所 | 窗口型不规则马鞍形线圈的绕线装置及绕制方法 |
| JP6460922B2 (ja) * | 2015-06-16 | 2019-01-30 | 株式会社日立製作所 | ビーム用超電導偏向電磁石およびそれを用いたビーム偏向装置 |
| CN116994851A (zh) * | 2023-09-04 | 2023-11-03 | 中国科学院近代物理研究所 | 一种粒子加速器用的抗辐射二极磁铁 |
| CN118178883B (zh) * | 2024-03-26 | 2026-02-13 | 上海艾普强粒子设备有限公司 | 一种用于放射治疗的扫描磁铁系统 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0185955B1 (de) * | 1984-12-10 | 1988-05-25 | Siemens Aktiengesellschaft | Verfahren zur Herstellung einer scheibenförmigen, gekrümmten Magnetspule und Vorrichtungen zur Durchführung dieses Verfahrens |
| DE3504211A1 (de) * | 1985-02-07 | 1986-08-07 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur herstellung einer gekruemmten magnetspule und vorrichtung zur durchfuehrung dieses verfahrens |
| EP0208163B1 (de) * | 1985-06-24 | 1989-01-04 | Siemens Aktiengesellschaft | Magnetfeldeinrichtung für eine Anlage zur Beschleunigung und/oder Speicherung elektrisch geladener Teilchen |
| EP0276360B1 (de) * | 1987-01-28 | 1993-06-09 | Siemens Aktiengesellschaft | Magneteinrichtung mit gekrümmten Spulenwicklungen |
| JPS63304606A (ja) * | 1987-06-03 | 1988-12-12 | Sumitomo Electric Ind Ltd | 酸化物超伝導2極マグネットコイル |
| US4870287A (en) * | 1988-03-03 | 1989-09-26 | Loma Linda University Medical Center | Multi-station proton beam therapy system |
| JP2896188B2 (ja) * | 1990-03-27 | 1999-05-31 | 三菱電機株式会社 | 荷電粒子装置用偏向電磁石 |
| US5153546A (en) * | 1991-06-03 | 1992-10-06 | General Electric Company | Open MRI magnet |
| JP2549233B2 (ja) * | 1992-10-21 | 1996-10-30 | 三菱電機株式会社 | 超電導電磁石装置 |
| US5442928A (en) * | 1994-08-05 | 1995-08-22 | General Electric | Hybrid cooling system for a superconducting magnet |
| US5446433A (en) * | 1994-09-21 | 1995-08-29 | General Electric Company | Superconducting magnet having a shock-resistant support structure |
| DE19904675A1 (de) * | 1999-02-04 | 2000-08-10 | Schwerionenforsch Gmbh | Gantry-System und Verfahren zum Betrieb des Systems |
| US6509819B2 (en) * | 1999-07-23 | 2003-01-21 | American Superconductor Corporation | Rotor assembly including superconducting magnetic coil |
| US6403967B1 (en) * | 1999-10-15 | 2002-06-11 | Advanced Ion Beam Technology, Inc. | Magnet system for an ion beam implantation system using high perveance beams |
| US6770888B1 (en) * | 2003-05-15 | 2004-08-03 | Axcelis Technologies, Inc. | High mass resolution magnet for ribbon beam ion implanters |
| WO2005053794A1 (en) * | 2003-12-02 | 2005-06-16 | Radinova Ab | Multiple room radiation treatment system |
| US7170377B2 (en) * | 2004-07-28 | 2007-01-30 | General Electric Company | Superconductive magnet including a cryocooler coldhead |
| JP5481070B2 (ja) * | 2006-01-19 | 2014-04-23 | マサチューセッツ インスティテュート オブ テクノロジー | 粒子加速のための磁場生成方法、磁石構造体及びその製造方法 |
| DE102006035101A1 (de) * | 2006-07-28 | 2008-02-07 | Siemens Ag | Strahlführungsmagnet zur Ablenkung geladener Teilchen längs einer gekrümmten Bahn mit zugeordneter Kühlvorrichtung und Bestrahlungsanlage mit einem solchen Magneten |
-
2006
- 2006-04-21 DE DE102006018635A patent/DE102006018635B4/de not_active Expired - Fee Related
-
2007
- 2007-02-21 AT AT07712257T patent/ATE506679T1/de active
- 2007-02-21 EP EP07712257A patent/EP2011127B1/de not_active Not-in-force
- 2007-02-21 DE DE502007006995T patent/DE502007006995D1/de active Active
- 2007-02-21 WO PCT/EP2007/051642 patent/WO2007122025A1/de not_active Ceased
- 2007-02-21 US US12/297,374 patent/US20090091409A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007122025A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2011127B1 (de) | 2011-04-20 |
| US20090091409A1 (en) | 2009-04-09 |
| ATE506679T1 (de) | 2011-05-15 |
| DE502007006995D1 (de) | 2011-06-01 |
| WO2007122025A1 (de) | 2007-11-01 |
| DE102006018635B4 (de) | 2008-01-24 |
| DE102006018635A1 (de) | 2007-10-25 |
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