JPH11297500A - Accelerator system and operation method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use an ion beam even when except when having an ion beam irradiated for a treatment by providing a parallel operation mode of transporting the ion beam to a revolving accelerator when making incidence and of switching a transport course to an ion beam using a system other than the revolving accelerator except at incidence time. SOLUTION: A front stage accelerator 98 of an accelerator system accelerates an ion beam emitted from an ion source 96 by a linac for accelerating the beam by a high frequency impressed from a front stage accelerator 94. The ion beam emitted from the front stage accelerator 98 is made incident on a synchrotron type accelerator 100 by a beam transport system 90 and a beam transport system switching means 91 to be emitted to a treating room 101 after acceleration so as to be applied to irradiation for medical treatment. The beam transport system switching means 91 is an electrostatic deflector for controlling a beam transport system switching means power source 88 by a signal from a control means 97 and for switching the transport of the ion beam to the accelerator 100 for a treatment and the transport positive electron nucleus generating means 210, 220.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accelerator system utilizing ions for medical treatment and a method of operating the accelerator system.

[0002]

2. Description of the Related Art A conventional ion accelerator system for medical use is described in Japanese Patent No. 2596292.
FIG. 5 shows a conventional ion accelerator system.

As shown in FIG. 5, the pre-accelerator 1
From the injector 15 to the post-accelerator 15
Incident at 0. In the latter accelerator 150, the ion beam is accelerated to the energy required for the treatment and emitted. The emitted ion beam is transmitted to the ion beam transporting electromagnet 104,
The patient is transported to the treatment room 101 by using 105 and irradiated to a patient for cancer treatment.

[0004]

As described above, conventionally,
In a medical accelerator system, the ion beam could not be used for medical treatment except that the ion beam was transported and irradiated after accelerating the ion beam to the energy required for treatment.

An object of the present invention is to solve such a problem and to provide an accelerator system which can be used at a time other than irradiation with an ion beam for treatment.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an ion source, a pre-stage accelerator for accelerating and emitting an ion beam emitted from the ion source, and a plurality of downstream transports of the ion beam emitted from the pre-stage accelerator. A transport system capable of transporting to a course, and a switch installed in the middle of the transport system to select one of the courses for transporting an ion beam to a plurality of ion beam utilization systems downstream and to switch a transport course. Means and a control means thereof, an orbiting accelerator for injecting, accelerating, and then emitting the ion beam from the transport system by the transport course switching means, and an accelerator system comprising control means for controlling the orbiting accelerator A mode in which the transport course switching control means operates with the transport course being constant by the transport course switching means; The ion beam is transported to the orbital accelerator at the time of incidence while the accelerator is repeatedly performing the operation of incidence, acceleration, and emission, and the transport course is transferred to an ion beam utilization system other than the orbital accelerator except at the time of incidence. This is achieved by providing a parallel operation mode that can be switched.

[0007] Other than the time of incidence to the orbiting accelerator,
By transporting the ion beam to another utilization system, the utilization time of the ion beam can be increased.

It is another object of the present invention to provide an ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and an ion beam emitted from the pre-accelerator to a plurality of downstream ion beam utilization systems. A transport system capable of transport, switching means for switching a course for transporting the ion beam in the middle of the transport system, and control means therefor; and the ion beam from the transport system is incident by the transport course switching means. Then, after acceleration, a circular accelerator for emitting an ion beam for medical irradiation, irradiation means for irradiating a patient with the ion beam emitted from the circular accelerator, and control for controlling the post-accelerator and the irradiation means Means, and wherein the transport course switching control means includes a control signal from a control means for controlling the orbiting accelerator or the irradiation means. According, it is accomplished by that it comprises a control means for switching transport course different transport course and the course that enters the transport course of the transport system in the ring-type accelerator to the ring-type accelerator.

The ion beam is transported to a utilization system other than the orbiting accelerator except when the ion beam is incident on the orbiting accelerator by a control signal from the orbiting accelerator or the irradiation means. Use time can be increased.

[0010] Another object of the present invention is to provide an ion source, a pre-stage accelerator for accelerating and emitting an ion beam emitted from the ion source, a pulse length of the ion beam emitted from the pre-stage accelerator, and a per unit time. Control means for controlling the number of times of emission, a transport system capable of transporting the ion beam emitted from the pre-accelerator to a plurality of downstream ion beam utilization systems, and a plurality of downstream transport courses in the middle of the transport system. A switching means for selecting and switching a course for transporting the ion beam and its control means, and the ion beam from the transport system is incident by the transport course switching means, and after accelerating, the orbital accelerator for emitting,
In an accelerator system including an irradiation unit that irradiates an ion beam emitted from the orbiting accelerator and a control unit that controls the orbiting accelerator and the irradiation unit, a transportation course other than the orbiting accelerator is selected by the transportation course switching unit. The control means for controlling the pulse length and the number of times of emission per unit time outputs the product of the pulse length of the ion beam and the number of times of emission per unit time to the orbiting accelerator when the system is switched to the ion beam utilizing system. This is achieved by the control means for increasing the number of transports as compared with the case of transporting to a transport course.

When the transport course is switched to an ion beam utilization system other than the orbiting accelerator, the control means for controlling the pulse length and the number of extractions per unit time is controlled by the ion beam pulse length and per unit time. The utilization time of the ion beam can be increased by increasing the product of the number of times of emission of the ion beam as compared with the case where the product is transported to the transport course to the orbiting accelerator.

Another object of the present invention is to provide an ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and an ion beam emitted from the pre-accelerator to a plurality of downstream ion beam utilization systems. A transport system capable of transport, switching means for switching a course for transporting the ion beam in the middle of the transport system, and control means therefor; and the ion beam from the transport system is incident by the transport course switching means. And a circulating accelerator that emits after acceleration, irradiation means for irradiating the ion beam emitted from the circulating accelerator, control means for controlling the circulating accelerator and the irradiating means, and the transport course switching control Means for switching the transport course to a course incident on the orbiting accelerator, and then controlling the orbiting by the control means of the orbiting accelerator. This is achieved by the ion accelerator performing the ion beam injection operation, and the transport course switching control means including control means for switching the transport course to a utilization system other than the circular accelerator after the injection of the orbital accelerator is completed. .

After the transport course is switched to a course for entering the orbiting accelerator, the orbiting accelerator performs ion beam injection operation by control means of the orbiting accelerator,
The utilization time of the ion beam can be increased by providing the transportation course switching control means with the control means for switching the transportation course to a utilization system other than the orbiting accelerator after the end of incidence of the orbiting accelerator.

An object of the present invention is to provide an ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and transporting the ion beam emitted from the pre-accelerator to a plurality of downstream ion beam utilization systems. Possible transport system, switching means for switching the course of transporting the ion beam in the middle of the transport system and its control means, and the ion beam from the transport system is incident by the transport course switching means, After the acceleration, the orbiting accelerator for emitting an ion beam for medical irradiation, irradiation means for irradiating the patient with the ion beam emitted from the orbiting accelerator, and means for detecting body movement due to respiration of the patient An orbiting accelerator for medical irradiation based on a signal from a means for detecting movement of a body due to respiration of a patient, wherein the switching control means Is accomplished by a control means for switching the the transport course transport course of said to ring-type different from the ion beam utilization system to the accelerator.

[0015] The transport course switching control means, based on a signal from the means for detecting the movement of the body due to the respiration of the patient, transfers a transport course to the orbiting accelerator for medical irradiation and another different to the orbiting accelerator. The control means that switches the transport course to the ion beam utilization system allows the ion beam to be transported to utilization systems other than the orbiting accelerator when the body movement due to the patient's breathing is not suitable for treatment, and the ion beam utilization time Can be increased.

It is another object of the present invention to provide an ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and transporting the ion beam emitted from the pre-accelerator to a plurality of downstream transport courses. A transport system capable of being installed, installed in the middle of the transport system, a switching unit for switching a course for transporting the ion beam, and a control unit thereof, and the ion beam from the transport system by the transport course switching unit. A method of operating an accelerator system comprising a circulating accelerator that enters, accelerates, and then emits light, and a control unit that controls the circulating accelerator, wherein the orbiting accelerator repeatedly performs operations of incidence, acceleration, and emission. Before the incidence, the ion beam can be transported to the orbiting accelerator by the switching means. It is achieved by switching the to the ion beam utilization system other than the ring-type accelerator.

It is another object of the present invention to provide an ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and an ion beam emitted from the pre-accelerator to a plurality of downstream ion beam utilization systems. A transport system capable of transport, switching means for switching a course for transporting the ion beam in the middle of the transport system, and control means therefor; and the ion beam from the transport system is incident by the transport course switching means. And an orbiting accelerator for emitting an ion beam for medical irradiation after acceleration, irradiation means for irradiating the patient with the ion beam emitted from the orbiting accelerator, and means for detecting body movement due to respiration of the patient A method of operating an accelerator system comprising a medical irradiation system based on a signal from a means for detecting body movement due to respiration of a patient. It is achieved by switching the transport course transport course and into the ring-type accelerator to different other ion beam utilization system to the recirculating type accelerator.

[0018]

(Embodiment 1) Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 shows a first embodiment of the accelerator system of the present invention.
The ion beam emitted from the ion source 96 is accelerated by a linac that accelerates the beam with the high frequency applied from the ion source. The pulse length of the ion beam and the number of times of extraction per unit time are controlled by the control means 97 through the high-frequency power supply 94 of the linac and the power supply 93 of the ion source. The ion beam emitted from the pre-accelerator 98 is incident on the synchrotron 100 which is a revolving accelerator by the ion beam transport course 90 and the transport course switching means 91, and after acceleration, the treatment room 101.
And applied to medical irradiation. The transportation course switching means 91 is an electrostatic deflector, which controls the power supply 98 by a signal from the control means 97, and operates the synchrotron treatment accelerator 10
The transport of the ion beam to zero and the transport to the positron emission nucleus generators 210 and 220 are switched. In the present embodiment, the transportation course switching means 91 is of the electrostatic type because the transportation course switching can be performed at a high speed, and if the transportation course switching time is allowed to be long, the transportation course switching means is used. An electromagnet may be used. Transport course switching means 91 and positron emission nucleus generator 21
0,220, the transport course switching means 9
2 is installed, and ion beam transport to the positron emission nucleus generator 210 and the positron emission nucleus generator 220 is switched. The positron emission nucleus generating device 210 generates a positron emission nucleus of carbon, and the 220 generates a positron emission nucleus of fluorine. From those positron emitting nuclei,
It produces compounds used for cancer diagnosis, heart diagnosis, brain diagnosis and the like. Further, a beam dump 230 is provided downstream of the transport course switching means 92 so that the beam can be discarded.

The orbiting accelerator 100 is a synchrotron, and the control means 97 controls the power supply 99 of each device of the synchrotron so that after the ion beam is injected from the pre-accelerator 98, acceleration, emission, and preparation for injection are performed. repeat. The beam emitted from the synchrotron therapy accelerator 100 and transported on the beam transport course 109 is applied to the cancer treatment by the rotating irradiation device 110 shown in FIG.
The rotating irradiation device 110 includes a quadrupole electromagnet 15 for transporting an output beam emitted from the accelerator 100 to an irradiation target.
0 and a bending electromagnet 151. Further, the rotary irradiation device 110 includes electromagnets 222 and 223 for moving the irradiation position in the x direction and the y direction. Here, the x direction is a direction parallel to the deflection surface of the deflection electromagnet 151, and the y direction is a direction perpendicular to the deflection surface of the deflection electromagnet 151. Although not shown in FIG. 2, the quadrupole electromagnet 150, the bending electromagnet 151, and the electromagnets 222 and 223 for determining the irradiation position are each provided with a power source and controlled by the control device 97. An irradiation dose monitor 301 for measuring the irradiation dose distribution of the beam is provided downstream of the electromagnets 222 and 223. In the rotating irradiation device 110, the patient is irradiated with the patient fixed to the treatment irradiation table 111. The patient is precisely positioned on the treatment table prior to treatment irradiation.

One cycle of incidence, acceleration, and emission of the synchrotron is about 1 to 2 seconds. After preparation for incidence, about 0.05 is required until incidence and acceleration start, and acceleration is about 0.05.
The emission takes about 5 seconds, the emission takes 0.5 to 1 second, and the preparation for incidence after the emission takes about 0.5 seconds. In actual treatment, this treatment is repeated about 30 to 60 times in one treatment of one patient.

It is desirable that the amount of beam transported to the positron emission nucleus generator 210 or 220 be as large as possible. Therefore, the system of the present embodiment operates by switching the following three operation modes from the control device 97.

(I) Synchrotron continuous incidence mode: The transport course switching means 91 is continuously set to the incident course to the synchrotron unless there is a change signal.

(Ii) Continuous operation mode of positron emission nucleus generation: The transportation course is set to the positron emission nucleus generator 210 or 220 by the transportation course switching means 91. Unless there is a course change signal from the transfer course switching control means 97, the change of the transfer course is not performed. The transport to the positron emitting nucleus generators 210 and 220 is switched by the transport course switching means 92.

(Iii) Synchrotron-positron emission nucleation parallel operation mode: The transport course switching means 91 is set to the synchrotron incident course in accordance with the synchrotron incidence timing, and the transport course is set at the time of acceleration after the end of the injection. The transport course is switched by the switching means 91 to the positron emission nucleus generator. The transport to the positron emitting nucleus generators 210 and 220 is switched by the transport course switching means 92.

When the synchrotron continuous incidence mode (i) is selected, the transportation course switching means 91 sets the transportation course to the incidence course to the synchrotron by a signal from the control means 97 in FIG. The high frequency power supply 94 is controlled by the control means 97 so that the ion beam is emitted from the linac of the pre-accelerator 98 in synchronization with the incidence of the synchrotron. In this embodiment, since the synchrotron is operated at about 0.5 to 1 Hz, the pre-accelerator 9
8 emits the same repeated ion beam.
The operation timing of the synchrotron and the timing at which the ion beam is emitted from the pre-accelerator 98 at this time are shown in FIG.
(A).

When the continuous operation mode of positron emission nucleus generation (ii) is selected by a signal from the system control means of FIG. 1, the transportation course is set by the transportation course switching means 91 to the course to the positron emission nucleus generation apparatus. On the other hand, the high frequency power supply 94 is controlled by the control means 97, and the number of pulses of the ion beam emitted from the linac of the pre-accelerator 98 per unit time is increased as shown in FIG. The transport to the positron emitting nucleus generators 210 and 220 is switched by the transport course switching means 92.

According to the signal from the control means 97 in FIG.
i) When the synchrotron-positron emission nucleation parallel operation mode is selected, the high frequency power supply 94 is controlled by the control means 97, and the number of pulses from which the ion beam is emitted from the linac of the pre-accelerator 98 per unit time is (ii). Positron emission nucleation continuous operation mode. On the other hand, the signal from the control device 97 in FIG.
As described in the above, the transport course switching means 91 is set to the incident course to the synchrotron in accordance with the incidence timing of the synchrotron, and after the end of the incidence, the transport course switching means 91 is controlled by a signal from the control device 97 to change the transport course. Switch to positron emitting nucleus generator. When the beam is not incident on the synchrotron, the controller 97
The transport course switching means 91 sets the transport course to the positron emitting nucleus generating device, and the beam from the linac 98 is continuously transported to the positron emitting nucleating device. However, operation mode (ii) or operation mode (iii)
Is selected, in order to continue the operation of the linac even after the positron emission nuclei have been sufficiently generated, the transportation course switching means 92 controls the beam dump so that the ion beam is not transported to the positron emission nucleation apparatus. Of course, it is also possible to select 230.

It is usually desirable that the amount of beam transported to the positron emission nucleus generator 210 or 220 per unit time be as large as possible. In the above embodiment, when the ion beam is transported to the positron emission nucleus generating device 210 or 220, the number of times of emission from the pre-accelerator 98 per unit time is increased, but the pulse length of the emitted ion beam is increased. Even if it is increased, the same effect can be obtained. In this embodiment, the linac is used for the pre-accelerator, but the pre-accelerator may be an electrostatic accelerator. In this case, when the ion beam is transported to the positron emission nucleus generator, the electrostatic accelerator may be operated in a direct current.

In the above embodiment, the operation cycle of the synchrotron is about 0.5 to 1 second. However, when the operation cycle of the synchrotron is set to about 20 ms and the number of repetitions is increased, (i) the synchrotron continuous incidence Except for raising the number of repetitions in which the ion beam is emitted from the linac in the mode, it is completely the same.

In the above embodiment, the positron emission nucleus generator is installed downstream of the transport course switching means 92. However, it may be used for generating other radioisotopes. The present invention can be applied to various uses of an ion beam, such as application to irradiation of an irradiation target, generation of neutrons, and application to treatment of a tumor.

In the above embodiment, the ion beam is accelerated by the pre-accelerator 98 and transported to the orbiting accelerator and the positron emission nucleus generator 210 or 220. However, the transport course switching means 92 and the positron emission nucleus generator 2
Further providing acceleration means between 10 and 220,
If the ion beam is further accelerated, the amount of positron emission nuclei (radioisotopes) generated by the positron emission nucleus generator 210 or 220 can be increased. In this case, it is necessary to control the phases of the high-frequency source for acceleration downstream of the transport course switching means 92 and the high-frequency source 98 of the pre-accelerator so that the ion beam is effectively accelerated.

(Embodiment 2) Next, a second embodiment of the present invention will be described. In the present embodiment, as shown in FIG. 4, a patient 112 fixed to a treatment irradiation table 111 of a rotary irradiation device 110 is used.
A respiratory detection device 501 for detecting the movement of the body due to the respiration is installed. The three operation modes (i) (i
i) and (iii). In this embodiment, the control means 97 sets the beam of the beam when the signal from the respiratory detection device 501 has a specific phase in the operation modes (i) and (iii) so that irradiation can be performed when the body movement is small in the treatment. A sequence start signal for incidence, acceleration, and emission is issued. In the operation mode (iii), based on this signal, the transport course switching control means 91 switches the beam transport course so that the beam from the linac is incident on the synchrotron. When the synchrotron starts to accelerate the beam, the transport course switching control means 91 switches the beam from the linac to the positron emission nucleus generating device in accordance with the acceleration signal from the control device 97.

The above is the acceleration from the incidence of the synchrotron,
The case where the repetition cycle until emission is longer than the repetition cycle when the beam is emitted from the linac,
Exactly the same operation is possible even when the time from the input to the acceleration to the synchrotron to the output and the repetition of the beam output from the linac are almost the same. In this case, for example, if the repetition cycle of the synchrotron incidence, acceleration, and emission is the same as or shorter than the repetition cycle of the ion beam from the linac, the timing for switching the transport course to the course for the positron emission nucleus generator is It may be after the end of acceleration in the synchrotron or after the end of emission. The transport course may be repeatedly switched for each of the incident, acceleration, and emission cycles of the synchrotron, and the input, acceleration, and emission of the synchrotron may be performed while the signal from the respiration detection device 501 is in a specific phase. May be repeated, and the transport course may be made constant for the course of injecting the ion beam into the synchrotron.

[0034]

According to the present invention, it is possible to provide an accelerator system in which the ion beam can be used in addition to transporting and irradiating the beam after accelerating the beam to the energy required for the treatment, and the utilization rate of the equipment is high.

Further, by switching the beam transport course according to the patient's breathing, a highly safe system can be provided.

In the case where the beam from the pre-stage accelerator is transported to the ion beam utilizing system without being accelerated by the orbiting accelerator by the transport course switching means, a large amount of ion beam can be transported, so that the ion beam can be used effectively. And a large amount of radioisotopes and the like.

Further, since the beam can be efficiently supplied to a plurality of ion beam utilizing systems, the whole system can be downsized. Further, the cost required for constructing the system can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a rotary irradiation device.

FIG. 3 is a diagram showing an operation pattern according to the embodiment of the present invention.

FIG. 4 is a view showing a rotary irradiation device.

FIG. 5 is a diagram showing a conventional accelerator system.

[Explanation of symbols]

Reference numeral 3: bending electromagnet, 5, 7: quadrupole electromagnet, 8: high-frequency accelerating cavity, 15: injector, 16: pre-accelerator of the conventional system, 88: power supply for beam transport system switching means, 90: beam transport system, 91, 92 ... beam transport system switching means, 9
3 ... Ion source power supply, 94 ... Pre-accelerator power supply, 96 ... Ion source, 97 ... Control means, 98 ... Pre-accelerator, 99 ... Power supply for orbital accelerator equipment, 100 ... Accelerator, 101 ... Treatment room, 104, 105 ... Ion beam transport electromagnet, 11
0: rotating irradiation device, 112: patient, 145: quadrupole electromagnet in the embodiment of the present invention, 146: deflection electromagnet in the embodiment of the present invention, 150: quadrupole electromagnet of the irradiation device, 151: bending electromagnet of the irradiation device, 210, 220: Positron emission nucleus generation means, 222, 223: Irradiation position setting electromagnet, 230 ...
Beam dump 301, beam intensity measuring device 501
... Respiration detector.

Continuing on the front page (72) Inventor Naoyuki Yamada 4-6-1 Kanda Surugadai, Chiyoda-ku, Tokyo Inside Hitachi, Ltd. (72) Inventor Akira Uemura 4-6-Kanda Surugadai, Chiyoda-ku, Tokyo Inside Hitachi, Ltd. (72 Inventor Osamu Okada 4-6-1 Kanda Surugadai, Chiyoda-ku, Tokyo Inside Hitachi, Ltd. (72) Inventor ▲ Junichi Hiro ▼ 3-1-1 Sachimachi, Hitachi-shi, Ibaraki Pref.Hitachi Plant, Hitachi, Ltd. (72) Inventor Shio Miyamoto 4-6 Kanda Surugadai, Chiyoda-ku, Tokyo Inside Hitachi, Ltd.

Claims (7)

[Claims] An ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and an ion beam emitted from the pre-accelerator can be transported to a plurality of ion beam utilization systems downstream. A transport system, switching means for selecting one of the courses installed and transported in the middle of the transport system and switching the transport course, and its control means, and the ion beam from the transport system by the transport course switching means. Injection, after accelerating, the orbiting accelerator that emits, and an accelerator system including control means for controlling the orbiting accelerator, the transport course switching control means, the transport course switching means to make the transport course constant In the operation mode and the process in which the orbiting accelerator repeatedly performs the operation of incidence, acceleration, and emission, An accelerator system comprising a parallel operation mode for transporting a beam to the orbiting accelerator and switching a transport course to an ion beam utilization system other than the orbiting accelerator except at the time of incidence. 2. An ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and an ion beam emitted from the pre-accelerator can be transported to a plurality of downstream ion beam utilization systems. A transport system, a switching unit and a control unit for switching a course for transporting an ion beam in the middle of the transport system, and the ion beam from the transport system is incident by the transport course switching unit, and after acceleration, A circular accelerator for emitting an ion beam for medical irradiation, irradiation means for irradiating a patient with the ion beam emitted from the circular accelerator, control means for controlling the post-accelerator and the irradiation means, the transportation Course switching control means, according to a control signal from control means for controlling the orbiting accelerator or the irradiation means, the transport system of the transport system An accelerator system characterized by a control means for switching a transportation course to a course for entering the orbiting accelerator and a transportation course different from a transportation course to the orbiting accelerator. 3. An ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and control for controlling a pulse length of the ion beam emitted from the pre-accelerator and the number of extractions per unit time. Means, a transport system capable of transporting the ion beam emitted from the pre-accelerator to a plurality of downstream ion beam utilization systems, and a course for transporting the ion beam from a plurality of downstream transport courses in the middle of the transport system. Switching means for selecting and switching, and the control means thereof, and the ion beam from the transport system is made incident by the transport course switching means, accelerated, and then emitted, and the orbital accelerator, and emitted from the orbital accelerator. An accelerator system includes an irradiation unit that irradiates an ion beam, the orbiting accelerator, and a control unit that controls the irradiation unit. When the transport course is switched to an ion beam utilization system other than the orbiting accelerator by the transport course switching means, the control means for controlling the pulse length and the number of extractions per unit time is controlled by the ion beam pulse length. And a control means for increasing a product of the number of times of emission per unit time as compared with a case where the product is transported to a transport course to the orbiting accelerator. 4. An ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and an ion beam emitted from the pre-accelerator can be transported to a plurality of ion beam utilization systems downstream. A transport system, switching means for selecting and switching a course for transporting the ion beam from a plurality of transport courses downstream in the middle of the transport system, and control means therefor; and the ion from the transport system by the transport course switching means. A circular accelerator for injecting and accelerating the beam and then emitting the same, irradiation means for irradiating the ion beam emitted from the circular accelerator, and control means for controlling the circular accelerator and the irradiation means; After switching the transportation course to a course incident on the orbiting accelerator by course switching control means, the control means of the orbiting accelerator is changed to The orbiting accelerator performs the ion beam injection operation, and after the injection of the orbiting accelerator is completed, the transport course switching control means is a control means for switching a transport course to a utilization system other than the orbiting accelerator. A unique accelerator system. 5. An ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and an ion beam emitted from the pre-accelerator can be transported to a plurality of ion beam utilization systems downstream. A transport system, switching means for selecting and switching a course for transporting the ion beam from a plurality of transport courses downstream in the middle of the transport system, and control means therefor; and the ion from the transport system by the transport course switching means. After the beam is incident and accelerated, the orbital accelerator for emitting an ion beam for medical irradiation, irradiation means for irradiating the patient with the ion beam emitted from the orbital accelerator, and movement of the body by respiration of the patient The switching control means, based on a signal from the means for detecting the movement of the body due to the breathing of the patient, the medical irradiation A medical accelerator system for switching between a transport course to the orbiting accelerator and a transport course to another ion beam utilization system different from the orbiting accelerator to the orbiting accelerator. 6. An ion source, a pre-accelerator for accelerating and emitting an ion beam emitted from the ion source, and a transport system capable of transporting the ion beam emitted from the pre-accelerator to a plurality of downstream transport courses. Switching means for setting one of the courses for transporting an ion beam to a plurality of ion beam utilization systems located downstream and switching the transport course, and a control means for controlling the transport course; A method of operating an orbiting accelerator, comprising: an orbiting accelerator for injecting and accelerating the ion beam from the transport system by a switching unit, and then emitting the ion beam; and a control unit for controlling the orbiting accelerator. Transporting the ion beam to the orbital accelerator by the switching means before the incidence during the process of repeating the operation of acceleration, acceleration and emission. To be able to
A method of operating an accelerator system, wherein a transport course is switched to an ion beam utilization system other than the orbiting accelerator except at the time of incidence. 7. An ion source, a pre-accelerator for accelerating and outputting an ion beam emitted from the ion source, and an ion beam emitted from the pre-accelerator can be transported to a plurality of ion beam utilization systems downstream. A transport system, switching means for selecting and switching a course for transporting the ion beam from a plurality of transport courses downstream in the middle of the transport system, and control means therefor; and the ion from the transport system by the transport course switching means. After the beam is incident and accelerated, the orbital accelerator for emitting an ion beam for medical irradiation, irradiation means for irradiating the patient with the ion beam emitted from the orbital accelerator, and movement of the body by respiration of the patient A method of operating an accelerator system comprising means for detecting, wherein the method comprises the steps of: A method for operating an accelerator system, comprising: switching a transportation course to a circular accelerator for therapeutic irradiation and a transportation course to another ion beam utilization system different from the circular accelerator to the circular accelerator.