WO2022123914A1 - 粒子線加速装置、粒子線加速装置の運転方法、及び粒子線治療装置 - Google Patents
粒子線加速装置、粒子線加速装置の運転方法、及び粒子線治療装置 Download PDFInfo
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- 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
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- 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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
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- 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
- A61N5/1077—Beam delivery systems
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- 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
- A61N5/1077—Beam delivery systems
- A61N5/1078—Fixed beam systems
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- 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
- H05H13/04—Synchrotrons
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- 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
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- 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
- H05H7/10—Arrangements for ejecting particles from orbits
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- 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
- A61N2005/1085—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy characterised by the type of particles applied to the patient
- A61N2005/1087—Ions; Protons
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- 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
- H05H2007/043—Magnet systems, e.g. undulators, wigglers; Energisation thereof for beam focusing
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- 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
- H05H2007/046—Magnet systems, e.g. undulators, wigglers; Energisation thereof for beam deflection
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- 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
- H05H2277/00—Applications of particle accelerators
- H05H2277/10—Medical devices
- H05H2277/11—Radiotherapy
Definitions
- the embodiment of the present invention relates to a particle beam acceleration technique.
- a particle beam therapy technique for irradiating a patient's lesion tissue for example, cancer with a carbon ion particle beam for treatment has attracted attention.
- this particle beam therapy technique normal tissue is not damaged and only the lesion tissue can be killed pinpointly, so that the burden on the patient is less than that of surgery or medication, and rehabilitation after treatment is achieved. Can be expected to be accelerated.
- particle beam accelerators that accelerate particle beams are roughly classified into two types.
- One is a linear accelerator that arranges a high-frequency accelerating cavity in a straight line
- the other is a circular accelerator that arranges a deflector that bends the orbit of a particle beam in a general circular shape and arranges a high-frequency accelerating cavity in a part of this circular orbit. ..
- a method using a linear accelerator for accelerating the low energy band immediately after particle beam generation and using a circular accelerator for accelerating the high energy band is common.
- the circular accelerator which accelerates while orbiting the particle beam, sequentially arranges a focusing / diverging device that controls the outer shape of the particle beam, a deflection device that bends the trajectory of the particle beam, and a steering electromagnet device that corrects the deviation of the trajectory of the particle beam. It is composed of things.
- this circular accelerator when the mass or energy of the orbiting particle increases, the magnetic rigidity, that is, the bending difficulty due to the magnetic field increases, so that the orbital radius of the particle beam increases. As a result, the entire device including the circular accelerator becomes large. As the size of the equipment increases, the size of the ancillary equipment of the building also increases, making it difficult to install this equipment in places where the installation range is limited, such as in urban areas.
- the problem to be solved by the present invention is that in a particle beam accelerator, the particle beam can be properly held in a predetermined orbit and the risk of erroneous irradiation of the particle beam can be reduced, and a superconducting magnet which is a component of the particle beam accelerator can be reduced. Is to shorten the recovery time of.
- the block diagram which shows the charged particle beam therapy apparatus Top view showing a superconducting synchrotron. An electric circuit diagram showing a superconducting magnet device. The block diagram which shows the control system in a superconducting synchrotron. A timing chart showing changes in the superconducting magnet current value and particle beam intensity when the superconducting magnet blocking device and the charged particle beam blocking device are started at the same time. A timing chart showing changes in the superconducting magnet current value and particle beam intensity when the superconducting magnet blocking device is activated after the charging particle beam blocking device has completed blocking. The flowchart which shows the breaking procedure of the charged particle beam breaking device and the superconducting magnet breaking device at the time of emitting a particle beam. The flowchart which shows the breaking procedure of the charged particle beam breaking device and the superconducting magnet breaking device at the time of particle beam acceleration or accumulation.
- the particle beam accelerating device includes an incident portion for incident on the particle beam, a guiding portion for guiding the particle beam to an orbit, and an accelerating portion for accelerating the particle beam orbiting the orbit. It controls an emitting unit that emits the particle beam, a particle beam blocking unit that blocks the particle beam in the orbit, and the incident unit, the guiding unit, the accelerating unit, the emitting unit, and the particle beam blocking unit.
- the guide unit includes a control unit, and the induction unit has a superelectromagnetic magnet and a superelectromagnetic magnet blocking unit that blocks the superelectromagnetic magnet.
- the control unit has a particle beam beam blocking unit when an abnormality occurs in the superelectromagnetic magnet.
- the starting order of the section and the superconducting electromagnet blocking section is configured to be changed at least according to the operating state of the emitting section.
- the charged particle beam therapy device 10 as the particle beam therapy device according to the present embodiment is a charged particle, for example, a negative pie intermediate, a proton, a helium ion, a carbon ion, a neon ion, a silicon ion, or a charged particle. It is a device that uses argon ions as a charged particle beam source for therapeutic irradiation.
- the charged particle beam therapy device 10 includes a particle beam generator 11, a particle beam accelerator 12, a particle beam transport device 13, and a particle beam irradiation device 14.
- the charged particle beam therapy device 10 irradiates the affected portion 5 of the patient as an irradiated object with the charged particle beam 1. Then, the affected portion 5 is treated using the charged particle beam 1.
- the particle beam generator 11 is a device that generates a charged particle beam 1, and is, for example, a device that extracts ions or the like generated by using an electromagnetic field or a laser.
- the particle beam accelerator 12 is a device that accelerates the charged particle beam 1 to a predetermined energy.
- a configuration including a two-stage accelerator including a front-stage accelerator 15 and a rear-stage accelerator 16 is shown.
- the pre-stage accelerator 15 there is a linear accelerator such as a drift tube linac DTL or a high frequency quadrupole linear accelerator RFQ.
- the post-stage accelerator 16 there is a circular accelerator such as a synchrotron or a cyclotron.
- These particle beam accelerators 12 stably provide a vacuum duct 20 (pipe) that keeps the passage space of the charged particle beam 1 in a vacuum airtight manner, a high frequency acceleration cavity 24 that accelerates the charged particle beam 1 by an electric field, and a charged particle beam 1. It is configured to have a deflection device 21 as a bipolar electric magnet device, a focusing / diverging device 22 as a quadrupole electric magnet device, and a control device 30 for controlling each of these devices.
- the particle beam transport device 13 is a device that transports the charged particle beam 1 accelerated by the particle beam accelerator 12 to the particle beam irradiation device 14.
- the particle beam transport device 13 includes a vacuum duct, a deflection device, a focusing / diverging device, and a control device for controlling these.
- the particle beam irradiation device 14 is installed downstream of the particle beam transport device 13.
- the particle beam irradiating device 14 accurately irradiates the irradiation point set in the affected area 5 of the patient with the charged particle beam 1 having a specific energy that has passed through the particle beam transporting device 13, so that the orbit 3 of the charged particle beam 1 is placed. After adjustment, the irradiation position and irradiation dose of the charged particle beam 1 in the affected area 5 are monitored.
- FIG. 2 shows the superconducting synchrotron 17 as the post-stage accelerator 16 of the particle beam accelerator 12 described above.
- the superconducting synchrotron 17 is a device that accelerates while orbiting the charged particle beam 1.
- the superconducting synchrotron 17 is configured. Further, the superconducting synchrotron 17 has a control device 30.
- the vacuum duct 20 is a pipe that keeps the passage space of the charged particle beam 1 in a vacuum airtight manner.
- a predetermined orbit 3 through which the charged particle beam 1 passes is formed on the axis.
- the deflection device 21 is composed of a bipolar electromagnet device, and causes a charged particle beam 1 to orbit along a predetermined orbit 3 by a generated magnetic field.
- the focusing / diverging device 22 is composed of a quadrupole electromagnet device, and focuses or diverges a charged particle beam 1 orbiting on a predetermined orbit 3 by a generated magnetic field. Therefore, these deflection devices 21 and focusing / divergence devices 22 function as guiding units that stably guide the charged particle beam 1 to a predetermined orbital 3.
- the high-frequency acceleration cavity 24 functions as an acceleration unit that accelerates a charged particle beam 1 orbiting along a predetermined orbit 3 in a vacuum duct 20 by an electric field generated by applying a high-frequency voltage.
- the incident device 25 functions as an incident portion in which the charged particle beam 1 generated by the particle beam generator 11 is incident on the superconducting synchrotron 17.
- the emission device 26 functions as an emission unit that emits the charged particle beam 1 accelerated by the superconducting synchrotron 17 to the particle beam transport device 13.
- the charged particle beam blocking device 27 functions as a particle beam blocking unit that urgently blocks the charged particle beam 1 orbiting on a predetermined orbit 3 in the vacuum duct 20. Specifically, the blocking by the charged particle beam blocking device 27 is the blocking of the charged particle beam 1 due to the closure of a gate (not shown), or the bump electromagnet (not shown) kicking the charged particle beam 1 into the disposal orbit. This is the blocking of the charged particle beam 1 due to the above.
- the control device 30 serves as a control unit for controlling the above-mentioned deflection device 21, focusing / divergence device 22, hexapole electromagnet device 23, high-frequency acceleration cavity 24, incident device 25, emission device 26, and charged particle beam blocking device 27. Function.
- the above-mentioned deflection device 21 and focusing / diverging device 22 are generally configured to have a normal electromagnet.
- at least one of the deflection device 21 and the focusing / diverging device 22 is composed of a superconducting magnet device 31 provided with the superconducting magnet 32 shown in FIG.
- the superconducting magnet device 31 is configured such that the superconducting magnet 32, the excitation power supply 33, and the breaker 34 are connected in series, and the protection resistor 35 is connected in parallel to the superconducting magnet 32.
- An abnormality for example, quenching occurs in the superconducting magnet 32, and the quenching detector (not shown) outputs a quenching signal to open the breaker 34.
- the quenching detector (not shown) outputs a quenching signal to open the breaker 34.
- the superconducting magnet 32 and the protection resistor 35 are connected in series to form a closed circuit.
- the energy stored in the superconducting magnet 32 is consumed by the protection resistance 35, and the superconducting magnet 32 is cut off. Therefore, the above-mentioned breaker 34 and the protective resistor 35 constitute a superconducting magnet breaking device 28 that functions as a superconducting magnet breaking portion that cuts the superconducting magnet 32.
- At least one of the deflection device 21 and the focusing / diverging device 22 composed of the superconducting magnet device 31 may have an abnormality such as quenching in the superconducting magnet 32.
- the charged particle beam blocking device 27 (FIG. 2) and the superconducting magnet blocking device 28 (FIG. 3) are started at the same time, a problem occurs.
- FIG. 5 it is assumed that the charged particle beam blocking device 27 starts blocking the charged particle beam 1, and at the same time, the superconducting magnet blocking device 28 starts blocking the superconducting magnet 32.
- the current value of the superconducting magnet 32 in which quenching or the like is generated changes (decreases) before the cutoff of the charged particle beam 1 is completed, the charged particle beam 1 before the cutoff is completed deviates from the predetermined orbital 3. there is a possibility.
- the charged particle beam 1 When the charged particle beam 1 deviates significantly from the predetermined orbital 3, the charged particle beam 1 collides with the vacuum duct 20 and is lost. On the other hand, when the charged particle beam 1 is slightly deviated from the predetermined orbital 3, they reach the position of the patient and the predetermined part of the patient, for example, which is not assumed by the particle beam irradiator 14. There is a risk of erroneous irradiation of areas that are out of the lesion tissue.
- an abnormality such as quenching occurs in the superelectromagnetic magnet 32 of the superelectromagnetic magnet device 31 constituting at least one of the deflection device 21 and the focusing / diverging device 22.
- the activation order of the charged particle beam blocking device 27 and the superelectromagnetic magnet blocking device 28 is set to at least the operating state of the emitting device 26, for example, the operating state of the emitting device 26, the high frequency acceleration cavity 24, the incident device 25, and the like. Change according to the state.
- the control device 30 performs the first cutoff control.
- the emitting device 26 may operate to emit the charged particle beam 1 from the superconducting synchrotron 17 and take it out.
- the charged particle beam blocking device 27 is activated to block the charged particle beam 1.
- the superconducting magnet blocking device 28 is activated to shut off the superconducting magnet 32 in which quenching or the like is generated.
- the current value of the superconducting magnet 32 in which quenching or the like is generated does not decrease from the start to the completion of the cutoff of the charged particle beam 1, and is maintained at an appropriate value. Therefore, the charged particle beam 1 is cut off in the superconducting synchrotron 17 without the charged particle beam 1 deviating from the predetermined orbital 3.
- the resistance value of the protection resistance 35 of the superconducting magnet device 31 is set so that the breaking time constant Ta of the superconducting magnet breaking device 28 is longer than the breaking time constant Tb of the charged particle beam breaking device 27. Will be done.
- the cutoff time constant Ta is the time from the start to the completion of the cutoff of the superconducting magnet 32.
- the cutoff time constant Tb is the time from the start to the completion of the cutoff of the charged particle beam 1.
- the cutoff time constant Ta of the superconducting magnet breaking device 28 is determined by selecting the resistance value of the protection resistance 35 in consideration of the generated voltage at the time of quenching of the superconducting magnet 32 and the increase in the coil temperature. For example, it is set to about 10 seconds or less.
- the blocking time constant Tb of the charged particle beam blocking device 27 is set to approximately 100 milliseconds or less.
- the cutoff time constant Ta of the superelectric conductive magnet cutoff device 28 is longer than the cutoff time constant Tb of the charged particle beam cutoff device 27, that is, the cutoff time constant Tb of the charged particle beam cutoff device 27 is the cutoff time constant Tb of the superelectric conductive magnet cutoff device 28. It will be set sufficiently shorter than the cutoff time constant Ta. Therefore, the generation of a large voltage and the rise in the coil temperature in the superconducting magnet 32 in which quenching or the like is generated are suppressed as much as possible.
- control device 30 performs the second cutoff control. For example, when the emitting device 26 is not operating, the charged particle beam 1 is incident on the superconducting synchrotron 17 by the incident device 25, the charged particle beam 1 is accelerated by the high frequency acceleration cavity 24, or the charged particle beam is accelerated. There are times when 1 is retained and accumulated. At this time, when an abnormality such as quenching occurs in the superconducting magnet 32, the superconducting magnet blocking device 28 is started at the same time as the charged particle beam blocking device 27. Then, the superconducting magnet 32 in which quenching or the like is generated by the superconducting magnet blocking device 28 is blocked, and the charged particle beam 1 is blocked by the charged particle beam blocking device 27 at the same time.
- the current value of the superconducting magnet 32 in which quenching or the like is generated decreases, and the charged particle beam 1 before the cutoff is completed is predetermined. It deviates from the orbit 3 of. Therefore, between the superconducting synchrotron 17 and the patient, for example, a gate or the like is provided in the particle beam transport device 13 or the particle beam irradiation device 14 to block the charged particle beam 1.
- the control device 30 performs the first cutoff control.
- step S11 during the operation of the exit device 26 in the superconducting synchrotron 17, an abnormality such as quenching occurs in the superconducting magnet 32 of the superconducting magnet device 31 constituting at least one of the deflection device 21 and the focusing / diverging device 22.
- the quench detector (not shown) detects an abnormality such as quenching of the superconducting magnet 32 and outputs a quench signal. Then, the control device 30 receives the quench signal from the quench detector.
- control device 30 activates the charged particle beam blocking device 27 when the quench signal is received from the quench detector.
- the charged particle beam blocking device 27 cuts off the charged particle beam 1.
- the control device 30 waits until the cutoff of the charged particle beam 1 is completed.
- the control device 30 performs the second cutoff control.
- step S21 when the exit device 26 in the superconducting synchrotron 17 is not operating, an abnormality such as quenching occurs in the superconducting magnet 32 of the superconducting magnet device 31 constituting at least one of the deflection device 21 and the focusing / diverging device 22. ..
- an abnormality such as quenching occurs in the superconducting magnet 32. ..
- the quench detector (not shown) detects an abnormality such as quenching of the superconducting magnet 32 and outputs a quench signal. Then, the control device 30 receives the quench signal from the quench detector.
- control device 30 simultaneously activates the superconducting magnet blocking device 28 and the charged particle beam blocking device 27 when the quench signal is received from the quench detector.
- step S25 which follows step S23, the superconducting magnet blocking device 28 is activated, so that the magnetic field of the superconducting magnet 32 in which quenching or the like is generated is attenuated by the protection resistance 35.
- step S27 following step S24 the charged particle beam 1 is blocked by the activation of the charged particle beam blocking device 27, and the blocking of the charged particle beam 1 is completed.
- the control device 30 When an abnormality such as quenching occurs in at least one of the superconducting electromagnet 32 of the deflection device 21 and the focusing / diverging device 22 in the superconducting synchrotron 17 as the particle beam accelerator 12, the control device 30 is a charged particle beam blocking device 27.
- the activation order of the superconducting electromagnet blocking device 28 and the superconducting electromagnet blocking device 28 is changed at least according to the operating state of the emitting device 26. For example, when an abnormality such as quenching occurs in the superconducting magnet 32 during the operation of the emitting device 26, the control device 30 activates the charged particle beam blocking device 27 to complete the blocking of the charged particle beam 1, and then the superconducting magnet.
- the cutoff device 28 is activated.
- the current value of the superconducting magnet 32 in which quenching or the like is generated does not decrease, and the cutoff of the charged particle beam 1 can be completed in a state where the current value is at an appropriate value.
- the charged particle beam 1 emitted from the superconducting synchrotron 17 can reduce the risk of erroneous irradiation caused by the particle beam irradiation device 14.
- the superconducting magnet 32 of the superconducting magnet device 31 constituting at least one of the deflection device 21 and the focusing / diverging device 22 is quenched or the like.
- the control device 30 activates the superconducting electromagnet blocking device 28 at the same time as the charged particle beam blocking device 27.
- the superconducting magnet 32 in which the quench or the like is generated is quickly shut off, and the increase in the coil temperature and the generation of the large voltage are suppressed. Therefore, the recooling time of the superconducting magnet 32 in which the quench or the like is generated can be shortened. The recovery time of the superconducting magnet 32 can be shortened.
- the control device 30 of the above-described embodiment has hardware resources such as a CPU, ROM, RAM, and HDD, and when the CPU executes various programs, information processing by software is realized by using the hardware resources. It consists of a computer. Further, the operation method of the particle beam accelerator of the above-described embodiment is realized by causing a computer to execute various programs.
- the control device 30 of the above-described embodiment is a control device in which processors such as a dedicated chip, FPGA (Field Programmable Gate Array), GPU (Graphics Processing Unit), or CPU (Central Processing Unit) are highly integrated, and a ROM.
- processors such as a dedicated chip, FPGA (Field Programmable Gate Array), GPU (Graphics Processing Unit), or CPU (Central Processing Unit) are highly integrated, and a ROM.
- Storage devices such as (Read Only Memory) or RAM (Random Access Memory), external storage devices such as HDD (Hard Disk Drive) or SSD (Solid State Drive), display devices such as displays, and mice or keyboards. It is equipped with an input device and a communication interface.
- This control device 30 can be realized by a hardware configuration using a normal computer.
- the program executed by the control device 30 of the above-described embodiment is provided by incorporating it into a ROM or the like in advance.
- the program may be a computer-readable, non-transient storage medium such as a CD-ROM, CD-R, memory card, DVD, or flexible disk (FD) file in an installable or executable format. It may be stored and provided in.
- control device 30 may be stored on a computer connected to a network such as the Internet, and may be downloaded and provided via the network. Further, the control device 30 can also be configured by connecting separate modules that independently exhibit the functions of the components to each other by a network or a dedicated line and combining them.
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Abstract
Description
Claims (4)
- 粒子線を入射する入射部と、
前記粒子線を軌道に誘導する誘導部と、
前記軌道上を周回する前記粒子線を加速する加速部と、
前記粒子線を出射する出射部と、
前記粒子線を前記軌道上で遮断する粒子線遮断部と、
前記入射部、前記誘導部、前記加速部、前記出射部及び前記粒子線遮断部を制御する制御部と、
を備え、
前記誘導部は、超電導電磁石と前記超電導電磁石を遮断する超電導電磁石遮断部とを有し、
前記制御部は、前記超電導電磁石に異常が発生した場合に、前記粒子線遮断部と前記超電導電磁石遮断部の起動順序を、少なくとも前記出射部の運転状態に応じて変更するように構成されている、
粒子線加速装置。 - 前記制御部は、
前記出射部の動作時に前記超電導電磁石に異常が発生した場合には、前記粒子線遮断部を起動して前記粒子線の遮断を完了した後に前記超電導電磁石遮断部を起動させ、
前記出射部の非動作時に前記超電導電磁石に異常が発生した場合には、前記超電導電磁石遮断部を前記粒子線遮断部と同時に起動させるように構成されている、
請求項1に記載の粒子線加速装置。 - 粒子線を入射する入射部と、
前記粒子線を軌道に誘導する誘導部と、
前記軌道上を周回する前記粒子線を加速する加速部と、
前記粒子線を出射する出射部と、
前記粒子線を前記軌道上で遮断する粒子線遮断部と、
を備える粒子線加速装置の運転方法であって、
前記誘導部は、超電導電磁石と前記超電導電磁石を遮断する超電導電磁石遮断部とを有し、
前記超電導電磁石に異常が発生した場合に、前記粒子線遮断部と前記超電導電磁石遮断部の起動順序を、少なくとも前記出射部の運転状態に応じて変更する、
粒子線加速装置の運転方法。 - 請求項1または請求項2に記載の粒子線加速装置と、
前記粒子線を用いて治療を行うために前記粒子線加速装置で加速された前記粒子線を患者の患部に照射する粒子線照射装置と、
を備える、
粒子線治療装置。
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Citations (6)
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JPS5941181A (ja) * | 1982-08-31 | 1984-03-07 | Toshiba Corp | 粒子加速電源装置 |
JPH0340409A (ja) * | 1989-07-07 | 1991-02-21 | Hitachi Ltd | 超電導コイルシステム |
JP2015159060A (ja) * | 2014-02-25 | 2015-09-03 | 株式会社東芝 | 加速器のビーム出射保護装置及び粒子線治療装置 |
JP2017033978A (ja) * | 2015-07-29 | 2017-02-09 | 住友電気工業株式会社 | 超電導マグネット装置 |
JP2017162896A (ja) * | 2016-03-08 | 2017-09-14 | 住友重機械工業株式会社 | 超伝導サイクロトロン及び超伝導電磁石 |
JP2019141245A (ja) * | 2018-02-19 | 2019-08-29 | 株式会社東芝 | 粒子線照射システム、粒子線照射システムの制御装置、及び粒子線照射システムの制御方法 |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5941181A (ja) * | 1982-08-31 | 1984-03-07 | Toshiba Corp | 粒子加速電源装置 |
JPH0340409A (ja) * | 1989-07-07 | 1991-02-21 | Hitachi Ltd | 超電導コイルシステム |
JP2015159060A (ja) * | 2014-02-25 | 2015-09-03 | 株式会社東芝 | 加速器のビーム出射保護装置及び粒子線治療装置 |
JP2017033978A (ja) * | 2015-07-29 | 2017-02-09 | 住友電気工業株式会社 | 超電導マグネット装置 |
JP2017162896A (ja) * | 2016-03-08 | 2017-09-14 | 住友重機械工業株式会社 | 超伝導サイクロトロン及び超伝導電磁石 |
JP2019141245A (ja) * | 2018-02-19 | 2019-08-29 | 株式会社東芝 | 粒子線照射システム、粒子線照射システムの制御装置、及び粒子線照射システムの制御方法 |
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