WO2017208774A1 - 加速器および粒子線照射装置 - Google Patents

加速器および粒子線照射装置 Download PDF

Info

Publication number
WO2017208774A1
WO2017208774A1 PCT/JP2017/017936 JP2017017936W WO2017208774A1 WO 2017208774 A1 WO2017208774 A1 WO 2017208774A1 JP 2017017936 W JP2017017936 W JP 2017017936W WO 2017208774 A1 WO2017208774 A1 WO 2017208774A1
Authority
WO
WIPO (PCT)
Prior art keywords
accelerator
trajectory
ion beam
ion source
ion
Prior art date
Application number
PCT/JP2017/017936
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
孝義 関
孝道 青木
風太郎 えび名
Original Assignee
株式会社日立製作所
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 株式会社日立製作所 filed Critical 株式会社日立製作所
Publication of WO2017208774A1 publication Critical patent/WO2017208774A1/ja

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING 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
    • 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
    • H05H13/00—Magnetic resonance accelerators; Cyclotrons
    • 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
    • H05H7/08—Arrangements for injecting particles into orbits

Definitions

  • the present invention relates to an accelerator for accelerating ions such as protons and carbon and a particle beam irradiation apparatus including the accelerator.
  • Patent Document 1 An apparatus for obtaining an ion beam of arbitrary energy in a circular accelerator is described in Patent Document 1.
  • This Patent Document 1 describes that “a beam guide made of a superconductor is installed behind a deflector, and the beam guide can be moved along with the deflector along the direction of radial rotation of particles”. .
  • the particle beam irradiation apparatus is roughly classified into a particle beam irradiation apparatus having a synchrotron as an accelerator and a particle beam irradiation apparatus having a cyclotron as an accelerator.
  • the particle beam irradiation apparatus having a cyclotron includes, for example, an ion source, a cyclotron, a beam transport system, a rotating gantry, and an irradiation apparatus.
  • the cyclotron has a vacuum vessel composed of a pair of opposed iron cores having a circular cross section, a high-frequency accelerator, and an extraction electromagnet.
  • the beam transport system is connected to the exit of the cyclotron, where an extraction electromagnet is arranged.
  • ions emitted from an ion source for example, heavy particle ions having a mass heavier than protons such as positive ions or carbon
  • the accelerated ion beam spirally circulates from the center of the iron core toward the inner side surface of the return yoke, and is emitted to the beam transport system by an extraction electromagnet provided at the periphery of the iron core.
  • the emitted ion beam passes through the beam transport system and is irradiated from the irradiation device to the cancerous part of the patient on the treatment table.
  • a take-out deflector is provided in the vicinity of the outer periphery of the acceleration electrode in order to take out accelerated particles. And the particle
  • Patent Document 1 described above describes a circular accelerator that obtains an ion beam of arbitrary energy without using this degrader.
  • the beam extraction mechanism described in Patent Document 1 requires a beam guide made of a superconductor, a mechanically moving deflector, and a beam deflector. For this reason, since a large-scale moving device in a vacuum is required, there is a problem that the device becomes very large and complicated.
  • An object of the present invention is to provide an accelerator capable of easily taking out a beam of an arbitrary energy over a wide range without using a large-scale moving device, and a particle beam irradiation apparatus including the accelerator. .
  • the present invention includes a plurality of means for solving the above-described problems.
  • an ion source an accelerating unit for accelerating an ion beam extracted from the ion source, and an orbit of the ion beam are provided.
  • FIG. 6 It is a figure which shows the whole structure of the particle beam irradiation apparatus of this invention. It is the side view which showed the outline of the circular accelerator which concerns on Example 1 of this invention. It is the top view which showed the outline of the plane of the circular accelerator shown in FIG. It is the perspective view which showed the outline of the magnetic pole of the circular accelerator shown in FIG. It is a cross-sectional view which shows the outline of the angle adjuster shown in FIG. It is a top view which shows the example of the track
  • Embodiment 1-3 which is a preferred embodiment of the accelerator and particle beam irradiation apparatus of the present invention, will be described below with reference to the drawings. First, the concept of an accelerator that is most suitable for the accelerator of the present invention will be described.
  • the inventors of the present invention have made various studies in order to realize an accelerator that can continuously extract an ion beam like a cyclotron and can extract an ion beam with different energy like a synchrotron.
  • the inventors of the present invention first focused on the mutual spacing of beam orbits of ion beams that circulate in the vacuum vessel of the cyclotron (in order to facilitate beam extraction) Widening the interval).
  • Increasing the interval between the beam orbits that is, increasing the interval between the beam orbits (turn separation) leads to an increase in the diameter of the vacuum vessel and an increase in the size of the cyclotron.
  • concentric beam orbits are drawn in a vacuum vessel, and it is difficult to ensure turn separation at high energy, making it difficult to efficiently emit ion beams with different energies. Met.
  • the cyclotron there is a beam passage region (plane) in which the radius gradually increases in a spiral shape, and the ion source is installed near the center of this region so that ions are incident on the circular orbit.
  • the present inventors move the beam incident point existing at the center of the beam passing region in the cyclotron toward the beam extraction port formed on the outer periphery of the beam passing region, that is, the beam incident point at the center of the beam passing region. Instead, we considered moving from a position shifted toward the beam outlet to the orbit. As a result, the distance between the beam orbits formed in the vacuum vessel becomes closer between the incident position of the ions entering the vacuum vessel and the beam extraction port (orbital integration region is formed), and beam extraction is performed. It has been found that at the position opposite to the mouth by 180 degrees, the distance between the beam orbits formed in the vacuum vessel can be widened contrary to the distance between the beam incident point and the beam extraction opening.
  • the present inventors have created a new accelerator capable of efficiently extracting ion beams having different energies by applying such a concept of beam orbit.
  • FIG. 1 is a diagram showing an overall configuration of a particle beam irradiation apparatus to which the present invention relates.
  • the particle beam irradiation apparatus 100 includes an accelerator 20, a beam transport system 60, an irradiation apparatus 70, a treatment table 40, and a control apparatus 50.
  • ions generated by the ion source 4 are accelerated by the accelerator 20 to be an ion beam.
  • the accelerated ion beam is emitted from the accelerator 20 and transported to the irradiation device 70 by the beam transport system 60.
  • the transported ion beam is shaped by the irradiation device 70 so as to match the shape of the affected part, and is irradiated to the target of the patient 45 lying on the treatment table 40 by a predetermined amount.
  • each device and equipment in the particle beam irradiation apparatus 100 including the accelerator 20 is controlled by the control device 50.
  • FIGS. 2 is a schematic side view of a circular accelerator to which the present invention is applied
  • FIG. 3 is a schematic plan view of FIG.
  • FIG. 4 is a perspective view schematically showing the magnetic pole.
  • FIG. 5 is a cross-sectional view schematically showing the angle adjuster.
  • FIG. 6 is a plan view showing an example of the trajectory of the ion beam when an angle adjuster for rotating the ion source is used.
  • FIG. 7 is a diagram showing the relationship between the rotation angle and extraction energy when the ion source is rotated.
  • FIG. 8 is a cross-sectional view showing an outline of the local magnetic field generator.
  • the accelerator 20 includes an ion source 4, a high-frequency electrode (acceleration unit) 3, a magnetic pole 1, a local magnetic field generation unit 2, a vacuum vessel 10, an annular coil 5, An extraction septum 11 is provided.
  • a high-frequency electrode 3 having a hollow inside is arranged symmetrically in the magnetic pole recess 1c, and a high-frequency power source 15 applies a high frequency from the outside. Using the electric field generated by this high frequency, the high frequency electrode 3 accelerates the ion beam extracted from the ion source 4.
  • the vacuum vessel 10 is disposed so as to be sandwiched between the magnetic poles 1 and forms a single vacuum vessel as a whole, and forms a main magnetic field 41 in the magnetic pole gap 43 by forming a magnetic circuit.
  • the vacuum container 10 is a nonmagnetic material.
  • the annular coil 5 is installed on the atmosphere side of the vacuum vessel 10 and is a coil for generating a main magnetic field 41 (B 0 ) in the magnetic pole gap 43 between the magnetic poles 1 by the magnetic pole 1.
  • the annular coil 5 may be a coil made of a normal conducting material or a coil made of a superconducting material.
  • the magnetic pole 1 has magnetic pole convex portions 1a and 1b and a magnetic pole concave portion 1c, and has a bilaterally symmetric and vertically asymmetrical structure when viewed from above.
  • the circulating frequency of the ion beam is, for example, 19.82 megahertz (MHz), and the magnetic pole 1 is set to generate an isochronous magnetic field that makes one round at the same time regardless of the energy.
  • the magnetic field acting on the beam along the beam trajectory is formed by the magnetic pole convex portions 1a and 1b so as to be a low magnetic field in the concave portion and a high magnetic field in the convex portion.
  • the shapes and heights of the magnetic pole protrusions 1a and 1b are set to directions and strengths that suppress the divergence of the ion beam in the magnetic pole gap 43 direction and the circulation direction.
  • the magnetic pole 1 is a magnetic material, such as iron.
  • the surface of the magnetic pole 1 that faces the magnetic pole gap 43 is symmetrical.
  • the center of the magnetic pole formed by the magnetic pole convex portions 1a and 1b and the magnetic pole concave portion 1c is located at a position biased from the center of the magnetic pole 1 to the beam extraction position 44, and the ion source 4 is disposed in the vicinity thereof. Due to such a biased arrangement structure, the magnetic pole 1 generates a trajectory aggregation region 18 in the orbit.
  • magnetic pole convex portions 1a and 1b are used, but there is no limitation as long as it is two or more poles.
  • the magnetic pole projections 1a and 1b can be provided with trim coils for fine adjustment of the magnetic field, and the trim coil current can be adjusted so as to ensure isochronism and stability of betatron oscillation. is there.
  • the “isochronous magnetic field” in the present invention means that the ion beam makes one round even if the energy of the accelerated ion beam increases and the radius of the beam orbit around the ion beam increases. It means a magnetic field that does not change time.
  • circular orbit means a plurality of annular orbits until ions emitted from the ion source 4 are extracted from the extraction position 44.
  • the ion source 4 is disposed in the magnetic pole 1, and is ionized by an electric field generated between the ground electrode 21 and the high frequency electrode 3 by applying a high frequency to the high frequency electrode 3 by the high frequency power supply 15. Ions generated in the source 4 are extracted into the accelerator 30.
  • the ion source 4 has an ion beam trajectory in order to change the ion beam trajectory at a later timing including the time of extraction from the ion source 4 in accordance with the ion beam extraction energy.
  • the angle adjuster 31 is attached as a changing unit that changes the angle within the incident trajectory adjusting unit 6.
  • the angle adjuster 31 includes a motor 31a and an attachment shaft 31b, and adjusts the extraction angle of ions extracted from the ion source 4 by rotating the ion source 4 attached to the attachment shaft 31b by a predetermined angle by the motor 31a.
  • the attachment shaft 31b of the ion source 4 has a vacuum sealing structure, and is configured to maintain a vacuum in the vacuum vessel 10.
  • the trajectory immediately after extraction is controlled as a region for changing the trajectory of the ion beam at a later timing including the time of extraction from the ion source 4 according to the extraction energy of the ion beam
  • An incident trajectory adjustment unit 6 is defined for changing the trajectory so that it can be easily taken out.
  • the incident trajectory adjusting unit 6 means a range within one round after being extracted from the ion source 4.
  • FIG. 6 shows an example of a state in which the trajectory of the ion beam is changed by the rotation of the ion source 4 in the incident trajectory adjustment unit 6.
  • an electric field is generated between the ground electrode 21 and the high-frequency electrode 3.
  • An ion beam is extracted from the ion source 4 by the generated electric field and accelerated by the electric field generated by the high-frequency electrode 3.
  • the angle of the ion beam is extracted by the angle between the high-frequency electrode 3 and the extraction surface of the ion source 4 by rotating and fixing the ion source 4 to a predetermined angle by the angle adjuster 31. It can be changed to any value. For example, when the extraction angle of the ion beam is 0 degree, the track 7a before change shown in FIG. 6 is obtained, and the track 7b after change is obtained by rotating the ion source 4.
  • FIG. 7 shows an example of the result of analyzing the extraction energy of the beam energy and the rotation angle of the ion source 4 when the acceleration condition by the high-frequency electrode 3 is constant and the local magnetic field generator 2 is used together.
  • the local magnetic field generator 2 is arranged in the orbit of the magnetic pole recess 1 c on the opposite side of 180 ° on the side where the orbit aggregation region 18 where the beam orbits 7 are aggregated is formed. ing.
  • the local magnetic field generator 2 is disposed opposite to the space in which the ion beam passes in the direction of the magnetic pole gap 43, and a magnetic field (B m ) for extracting the ion beam is partially disposed on the orbit. Is generated.
  • the local magnetic field generating unit 2 can be formed, for example, by being sandwiched by an annular coil or two or more independent wires, and the position and number are determined in accordance with the number of extracted energy.
  • the ion beam deflected by the magnetic field generated by the local magnetic field generator 2 is transported to the extraction position 44.
  • the ion beam transported to the extraction position 44 is extracted outside the magnetic pole 1 by the extraction septum 11.
  • the extraction septum 11 operates in the same manner regardless of whether a magnetic field or an electric field is used.
  • Accelerator 20 configured as described above operates as follows.
  • the ion beam extracted from the ion source 4 and incident from the center of the magnetic pole convex portions 1a and 1b performs a spiral motion by the main magnetic field 41 formed by the magnetic pole convex portions 1a and 1b and the magnetic pole concave portion 1c.
  • Each time it passes through the high-frequency electrode 3 during the spiral motion it is accelerated by the electric field generated at the high-frequency electrode 3, and the energy is increased.
  • the shape and height of the magnetic pole protrusions 1a and 1b are set to such an orientation and intensity as to suppress the divergence of the beam in the magnetic pole gap 43 direction and the circulation direction, and the ion beam can have any energy at the same time. It is set to make one round.
  • the magnetic field acting on the beam along the beam trajectory is a low magnetic field in the concave portion and a high magnetic field in the convex portion due to the magnetic pole convex portions 1a and 1b.
  • the strength of the magnetic field along the beam trajectory is added, and the average value of the magnetic field along the trajectory is proportional to the relativistic gamma factor ( ⁇ factor) of the beam.
  • the betatron oscillation is stably performed in the direction perpendicular to the orbital plane and the orbital plane of the beam.
  • the orbiting beam is deflected by the local magnetic field 42 generated by the local magnetic field generator 2 that has reached the extraction energy. As a result, the orbiting beam deviates from the orbit and moves to the extraction position 44.
  • the direction of the local magnetic field 42 is determined by the energy in the same direction as the main magnetic field 41 or in the opposite direction. Since the incident beam trajectory in the vicinity of the ion source 4 is changed by rotating the ion source 4, an ion beam having a predetermined beam energy can be easily extracted even if the intensity of the local magnetic field 42 is reduced. Further, since the orbiting ion beam trajectory is gathered at the take-out position 44, deflection and take-out toward the take-out position 44 can be performed with a smaller local magnetic field 42 than the trajectory that is not gathered.
  • the beam movement adjustment to the extraction position 44 has been described for the case where both the local magnetic field generation unit 2 and the incident trajectory adjustment unit 6 are used, but each may be used alone.
  • the magnetic field that can be generated by the local magnetic field generation unit 2 is 0.02 Tesla (T) when a commonly used wire is used, and the incident trajectory adjustment unit 6 compensates for the insufficient displacement.
  • the energy can be switched at high speed.
  • a plurality of local magnetic field generating units 2 are arranged from the center to the outer peripheral direction in accordance with the energy to be extracted, the energy can be switched without moving the local magnetic field generating unit 2.
  • the ion beam can be extracted in half a circle, but there is no problem even if the ion beam is extracted after a plurality of rounds. As a result, it is possible to take out by adjusting the local magnetic field intensity and the incident trajectory.
  • the accelerator 20 includes the ion source 4, the ion source 4, and the ion source 4.
  • the magnetic field generator 2 and an angle adjuster 31 that changes the trajectory of the ion beam in the incident trajectory adjuster 6 are provided.
  • the accelerator 20 is configured to change the trajectory of the ion beam at the subsequent timing including the time of extraction from the ion source 4 by the angle adjuster 31 according to the extraction energy of the ion beam.
  • the ion source 4 can be appropriately adjusted so that the ion beam has a predetermined energy, and the ion beam can be taken out at a higher speed and without using a large-scale apparatus. Yes. Moreover, since the ion beam is extracted by the local magnetic field generator 2, the ion beam having a predetermined beam energy can be easily extracted even if the intensity of the local magnetic field 42 generated by the local magnetic field generator 2 is reduced.
  • the magnetic pole 1 is formed so as to generate the trajectory aggregation region 18 in the orbit, the circulating ion beam trajectory is aggregated at the extraction position 44, so that there are fewer local areas than non-aggregated orbits.
  • the magnetic field 42 can be deflected to the beam extraction position 44, which makes extraction very easy.
  • a predetermined magnetic field can be obtained by using a magnetic field generated by the local magnetic field generator 2.
  • the ion beam of energy can be deflected stably and easily toward the beam extraction position 44 on the orbital aggregation region 18 side.
  • the ion beam trajectory can be changed with a simple configuration by using the angle adjuster 31 that rotates the ion source 4 as a changing unit that changes the trajectory of the ion beam in the incident trajectory adjusting unit 6.
  • An ion beam having a predetermined beam energy can be obtained more easily.
  • the structure of the angle adjuster 31 can be simplified.
  • the trajectory is changed when ions are extracted from the ion source 4, the trajectory can be changed stably and reliably.
  • FIG. 9 is a schematic cross-sectional view of the configuration of the circular accelerator according to the present embodiment in which the trajectory changing electrode is arranged in the incident trajectory adjusting unit 6.
  • the trajectory changing electrode 32a disposed opposite to the ion beam immediately after being extracted from the ion source 4 is used as a changing unit that changes the trajectory of the ion beam in the incident trajectory adjusting unit 6.
  • 32b is disposed in a portion corresponding to the magnetic pole recess 1c so as to face the portion parallel to the vertical direction.
  • the trajectory change electrodes 32a and 32b change the trajectory by deflecting the ion beam that has been drawn from the ion source 4 and has just passed through the high-frequency electrode 3 once.
  • the trajectory change electrode 32a when a positive potential is applied to the trajectory change electrode 32a and a negative potential that is the reverse potential of the trajectory change electrode 32a is applied to the trajectory change electrode 32b, the ion beam having a positive charge is changed from the pre-change trajectory 7a shown in FIG.
  • the track 7b can be changed.
  • the trajectory can be changed in the opposite direction by changing the polarity.
  • the orbital change electrodes 32a and 32b may be installed at any number of weeks. However, energy increases and the voltage required for deflection increases with each lap, so that one round after extraction from the ion source 4 occurs. Positions within are the most appropriate.
  • the trajectory changing electrodes 32a and 32b for generating the electric field for changing the trajectory of the ion beam extracted from the ion source 4 are used. It is possible to change the trajectory at high speed by turning ON / OFF or changing the strength, and the time required for the change can be shortened.
  • the incident trajectory adjustment unit 6 can deflect the trajectory before the voltage required for deflection increases because it is within the range of one round after the extraction from the ion source 4 and changes the trajectory more easily. be able to.
  • Example 3 An accelerator and a particle beam irradiation apparatus according to Embodiment 3 of the present invention will be described with reference to FIG.
  • FIG. 10 the schematic of the cross section of the structure of the circular accelerator of a present Example which has arrange
  • the ion beam trajectory is changed in order to change the ion beam trajectory at subsequent timings including the time of extraction from the ion source 4 in accordance with the ion beam extraction energy.
  • An annular orbit changing electromagnet arranged opposite to the ion beam immediately after being extracted from the ion source 4 instead of the angle adjuster 31 of the first embodiment as a changing unit for changing the orbit within the incident orbit adjusting unit 6.
  • 33 is arranged in a portion corresponding to the magnetic pole recess 1c.
  • the trajectory changing electromagnets 33 are arranged facing each other with a space in the direction of the magnetic pole gap 43.
  • the trajectory changing electromagnet 33 changes the trajectory by deflecting the ion beam that is drawn from the ion source 4 and immediately passes through the high-frequency electrode 3 once.
  • the magnetic field generated by the trajectory changing electromagnet 33 is generated in a direction perpendicular to the paper surface of FIG.
  • the polarity of the generated magnetic field is changed according to the energy of the extracted ion beam.
  • the orbit change electromagnet 33 may be installed at any number of weeks, but the energy increases with each lap and the magnetic field required for deflection increases. A position within one lap is most appropriate.
  • Example 3 of the present invention substantially the same effect as the accelerator and particle beam irradiation apparatus of Example 1 described above can be obtained.
  • the magnetic field is turned on by using a trajectory changing electromagnet 33 that generates a magnetic field for changing the trajectory of the ion beam drawn from the ion source 4.
  • the trajectory can be changed at high speed by / OFF or changing the intensity, and the time required for the change can be shortened.
  • the incident trajectory adjustment unit 6 is within one round after extraction from the ion source 4, the trajectory can be deflected before the magnetic field required for deflection increases, and the trajectory can be changed more easily. be able to.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Biomedical Technology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Particle Accelerators (AREA)
  • Radiation-Therapy Devices (AREA)
PCT/JP2017/017936 2016-06-02 2017-05-11 加速器および粒子線照射装置 WO2017208774A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016110552A JP6663618B2 (ja) 2016-06-02 2016-06-02 加速器および粒子線照射装置
JP2016-110552 2016-06-02

Publications (1)

Publication Number Publication Date
WO2017208774A1 true WO2017208774A1 (ja) 2017-12-07

Family

ID=60477462

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/017936 WO2017208774A1 (ja) 2016-06-02 2017-05-11 加速器および粒子線照射装置

Country Status (2)

Country Link
JP (1) JP6663618B2 (enrdf_load_stackoverflow)
WO (1) WO2017208774A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114340134A (zh) * 2022-01-14 2022-04-12 新里程医疗技术(深圳)有限责任公司 一种医用分离扇形回旋加速器中的能量可调束流引出系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04155800A (ja) * 1990-10-19 1992-05-28 Sumitomo Heavy Ind Ltd ビーム調整用パラメータの設定可能領域表示装置
JPH09115697A (ja) * 1995-10-17 1997-05-02 Rikagaku Kenkyusho サイクロトロンのイオン引出部及びその調整方法
JPH11238599A (ja) * 1998-02-23 1999-08-31 Mitsubishi Electric Corp サイクロトロン装置
JP2006004941A (ja) * 2004-06-18 2006-01-05 General Electric Co <Ge> イオン源の配置及び調節のための方法並びに装置
JP2010218886A (ja) * 2009-03-17 2010-09-30 Sumitomo Heavy Ind Ltd 荷電粒子線照射制御装置及び荷電粒子線照射方法
JP2015065102A (ja) * 2013-09-26 2015-04-09 株式会社日立製作所 円形加速器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04155800A (ja) * 1990-10-19 1992-05-28 Sumitomo Heavy Ind Ltd ビーム調整用パラメータの設定可能領域表示装置
JPH09115697A (ja) * 1995-10-17 1997-05-02 Rikagaku Kenkyusho サイクロトロンのイオン引出部及びその調整方法
JPH11238599A (ja) * 1998-02-23 1999-08-31 Mitsubishi Electric Corp サイクロトロン装置
JP2006004941A (ja) * 2004-06-18 2006-01-05 General Electric Co <Ge> イオン源の配置及び調節のための方法並びに装置
JP2010218886A (ja) * 2009-03-17 2010-09-30 Sumitomo Heavy Ind Ltd 荷電粒子線照射制御装置及び荷電粒子線照射方法
JP2015065102A (ja) * 2013-09-26 2015-04-09 株式会社日立製作所 円形加速器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114340134A (zh) * 2022-01-14 2022-04-12 新里程医疗技术(深圳)有限责任公司 一种医用分离扇形回旋加速器中的能量可调束流引出系统

Also Published As

Publication number Publication date
JP6663618B2 (ja) 2020-03-13
JP2017216190A (ja) 2017-12-07

Similar Documents

Publication Publication Date Title
CN111279801B (zh) 圆形加速器、具备圆形加速器的粒子线治疗系统以及圆形加速器的运转方法
JP4713799B2 (ja) 等時性セクタ集束型サイクロトロンおよびそのサイクロトロンから荷電粒子を抽出する方法
JP4653489B2 (ja) サイクロトロンとそれを使用する方法
US20110266455A1 (en) Charged particle beam extraction method and apparatus used in conjunction with a charged particle cancer therapy system
JPH11513528A (ja) アイソクロナスサイクロトロンから荷電粒子を抽出する方法及びこの方法を応用する装置
US10850132B2 (en) Particle therapy system
WO2018173240A1 (ja) 円形加速器
TW463534B (en) Method and system of reducing axial beam focusing
WO2020044604A1 (ja) 粒子線加速器および粒子線治療システム
WO2019097721A1 (ja) 粒子線治療システムおよび加速器、ならびに加速器の運転方法
JP6341655B2 (ja) 円形加速器及び重粒子線治療装置
WO2019093110A1 (ja) 円形加速器および粒子線治療システム
WO2023013458A1 (ja) 円形加速器および粒子線治療システム
WO2017145259A1 (ja) 重粒子線治療装置
JP2017220333A (ja) 加速器及び粒子線照射装置
JP2019096404A (ja) 円形加速器および粒子線治療システム
WO2017208774A1 (ja) 加速器および粒子線照射装置
WO2018096648A1 (ja) 加速器および粒子線照射装置
US12382573B2 (en) Accelerator and particle therapy system
CN117356173A (zh) 粒子束加速器以及粒子束治疗系统
JP2023127939A (ja) 加速器及び粒子線治療装置
JP4276160B2 (ja) 円形荷電粒子加速器およびその円形荷電粒子加速器の運転方法
WO2018092483A1 (ja) 加速器および粒子線照射装置、ならびにビームの取出し方法
WO2018051425A1 (ja) ビーム取り出し方法およびそれを用いた円形加速器
JP7176982B2 (ja) 中性子発生装置及び中性子発生方法

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17806332

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17806332

Country of ref document: EP

Kind code of ref document: A1