EMITTING METHOD OF CHARGED PARTICLE BEAM AND PARTICLE BEAM IRRADIATION SYSTEM
PROBLEM TO BE SOLVED: To suppress irradiation displacement of beams in a depth direction in the body of a patient. SOLUTION: When a difference between a frequency Fmes of an acceleration high-frequency signal at finish of beam acceleration and a target frequency Fdes is in a tolerance range of ±Ferr...
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| creator | IKE KATSUHISA SAITO KAZUYOSHI NISHIUCHI HIDEAKI |
| description | PROBLEM TO BE SOLVED: To suppress irradiation displacement of beams in a depth direction in the body of a patient. SOLUTION: When a difference between a frequency Fmes of an acceleration high-frequency signal at finish of beam acceleration and a target frequency Fdes is in a tolerance range of ±Ferr, an energy compensation device 27 sequentially calculates compensation frequency data of a time-wise smooth change to make the frequency Fmes the target frequency Fdes. A high-frequency control device 24 sequentially sets the compensation frequency data on a high-frequency oscillator 11. The high-frequency oscillator 11 sequentially impresses the high-frequency signal of the frequency output, based on the compensation frequency data on an acceleration cavity 10 provided at a synchrotron 3. With this, beam energy going around the inside of the synchrotron 3 matches with a target energy after acceleration. The beam reaching the target energy is emitted from the synchrotron 3 and irradiated onto a patient from an irradiation field forming device 16. COPYRIGHT: (C)2006,JPO&NCIPI |
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SOLUTION: When a difference between a frequency Fmes of an acceleration high-frequency signal at finish of beam acceleration and a target frequency Fdes is in a tolerance range of ±Ferr, an energy compensation device 27 sequentially calculates compensation frequency data of a time-wise smooth change to make the frequency Fmes the target frequency Fdes. A high-frequency control device 24 sequentially sets the compensation frequency data on a high-frequency oscillator 11. The high-frequency oscillator 11 sequentially impresses the high-frequency signal of the frequency output, based on the compensation frequency data on an acceleration cavity 10 provided at a synchrotron 3. With this, beam energy going around the inside of the synchrotron 3 matches with a target energy after acceleration. The beam reaching the target energy is emitted from the synchrotron 3 and irradiated onto a patient from an irradiation field forming device 16. 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SOLUTION: When a difference between a frequency Fmes of an acceleration high-frequency signal at finish of beam acceleration and a target frequency Fdes is in a tolerance range of ±Ferr, an energy compensation device 27 sequentially calculates compensation frequency data of a time-wise smooth change to make the frequency Fmes the target frequency Fdes. A high-frequency control device 24 sequentially sets the compensation frequency data on a high-frequency oscillator 11. The high-frequency oscillator 11 sequentially impresses the high-frequency signal of the frequency output, based on the compensation frequency data on an acceleration cavity 10 provided at a synchrotron 3. With this, beam energy going around the inside of the synchrotron 3 matches with a target energy after acceleration. The beam reaching the target energy is emitted from the synchrotron 3 and irradiated onto a patient from an irradiation field forming device 16. COPYRIGHT: (C)2006,JPO&NCIPI</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROTHERAPY GAMMA RAY OR X-RAY MICROSCOPES HUMAN NECESSITIES HYGIENE IRRADIATION DEVICES MAGNETOTHERAPY MEDICAL OR VETERINARY SCIENCE NUCLEAR ENGINEERING NUCLEAR PHYSICS PHYSICS PLASMA TECHNIQUE PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS RADIATION THERAPY TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOTOTHERWISE PROVIDED FOR ULTRASOUND THERAPY |
| title | EMITTING METHOD OF CHARGED PARTICLE BEAM AND PARTICLE BEAM IRRADIATION SYSTEM |
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