Accelerator and particle beams irradiation device

• Main Authors: EBINA FUUTAROU, HARA SHIGEMITSU, UMEZAWA MASUMI, AOKOI TAKAMICHI, NISHIUCHI HIDEAKI, SEKI TAKAYOSHI
• Format: Patent
• Language: Chinese; English
• Published: 12.07.2019
• Subjects: ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ELECTROTHERAPY; HUMAN NECESSITIES; HYGIENE; MAGNETOTHERAPY; MEDICAL OR VETERINARY SCIENCE; PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS; RADIATION THERAPY; ULTRASOUND THERAPY

The invention provides an accelerator capable of efficiently emitting ion beams with different energy. The accelerator includes a circular vacuum container, and the vacuum container comprises a pair of circular side yokes opposite to each other. An incident electrode is arranged in the inlet side, relative to a beam emitting path in the side yoke, of the central axis of the vacuum container, and in the side yoke, 6 magnets are arranged in a radial shape in the surrounding of the incident electrode. 6 recess portions are arranged alternatively with the magnets in the circumference of the side yoke. A track concentric area and a track eccentric area are formed in the vacuum container, the track concentric area includes beam encircling tracks taking the incident electrode as the center, and the track eccentric area includes beam encircling tracks eccentric from the incident electrode and in the surrounding of the concentric area. In the track eccentric area, the beam encircling tracks become dense between the in