An accelerator includes an inflector through which a beam entering from an ion source passes and which introduces the beam to an acceleration orbit. The inflector includes a beam convergence unit that converges the beam passing through the inflector. A cyclotron, which accelerates a beam in a convol
An accelerator includes an inflector through which a beam entering from an ion source passes and which introduces the beam to an acceleration orbit. The inflector includes a beam convergence unit that converges the beam passing through the inflector. A cyclotron, which accelerates a beam in a convoluted acceleration orbit, includes magnetic poles, D-electrodes, and an inflector. The magnetic poles generate a magnetic field in a direction perpendicular to the acceleration orbit. The D-electrodes generate a potential difference, which accelerates the beam, in the acceleration orbit. A beam, which enters in an incident direction perpendicular to the acceleration orbit, passes through the inflector, and the inflector bends the beam so as to introduce the beam to the acceleration orbit. The inflector includes a beam convergence unit that converges the beam passing through the inflector.
대표청구항▼
1. An accelerator comprising: an inflector through which a beam entering from an ion source passes and which introduces the beam to an acceleration orbit,wherein the inflector includes a beam convergence unit configured to converge the beam passing through the inflector,wherein the beam convergence
1. An accelerator comprising: an inflector through which a beam entering from an ion source passes and which introduces the beam to an acceleration orbit,wherein the inflector includes a beam convergence unit configured to converge the beam passing through the inflector,wherein the beam convergence unit generates a distorted quadrupole-component electric field in a beam passing area through which the beam passes,wherein the inflector includes positive and negative electrodes facing each other with a gap, which forms the beam passing area, therebetween, andthe positive and negative electrodes are formed so that a width of the gap is not constant in a cross-section perpendicular to a traveling direction of the beam,wherein the acceleration orbit has a convoluted shape, andthe width of the gap is increased toward a position corresponding to an outer side of the acceleration orbit, which has the convoluted shape, the cross-section perpendicular to the traveling direction of the beam. 2. An accelerator comprising: an inflector through which a beam entering from an ion source passes and which introduces the beam to an acceleration orbit,wherein the inflector includes a beam convergence unit configured to converge the beam passing through the inflector,wherein the acceleration orbit has a convoluted shape,the beam convergence unit generates an electric field in a beam passing area through which the beam passes, andan intensity of the electric field becomes weak toward a position corresponding to an outer side of the acceleration orbit, which has the convoluted shape, in a cross-section perpendicular to a traveling direction of the beam. 3. The accelerator according to claim 2, wherein the beam convergence unit generates a distorted quadrupole-component electric field in a beam passing area through which the beam passes. 4. The accelerator according to claim 3, wherein the inflector includes positive and negative electrodes facing each other with a gap, which forms the beam passing area, therebetween, andthe positive and negative electrodes are formed so that a width of the gap is not constant in a cross-section perpendicular to a traveling direction of the beam. 5. A cyclotron that accelerates a beam in a convoluted acceleration orbit, the cyclotron comprising: magnetic poles configured to generate a magnetic field in a direction perpendicular to the acceleration orbit;D-electrodes generating a potential difference, which accelerates the beam, in the acceleration orbit; andan inflector through which a beam entering in an incident direction perpendicular to the acceleration orbit passes and which bends the beam so as to introduce the beam to the acceleration orbit,wherein the inflector includes a beam convergence unit configured to converge the beam passing through the inflector,wherein the acceleration orbit has a convoluted shape,the beam convergence unit generates an electric field in a beam passing area through which the beam passes, andan intensity of the electric field becomes weak toward a position corresponding to an outer side of the acceleration orbit, which has the convoluted shape, in a cross-section perpendicular to a traveling direction of the beam.
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이 특허에 인용된 특허 (2)
Toyota Eijiro (Tokyo JPX), Electric beam accelerator.
Takayama Takeshi (Tokyo JPX), Method of incidence of charged particles into a magnetic resonance type accelerator and a magnetic resonance type accele.
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