The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2020
Filed:
Oct. 12, 2018
Hitachi, Ltd., Tokyo, JP;
Futaro Ebina, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A particle therapy system in which the efficiency of extracting a beam from a synchrotron can be improved and time required for therapy can be shortened is provided. The synchrotronof the particle therapy systemextracts a charged particle beam, which circulates in the synchrotron, out of the synchrotronby means of a slow extraction method using the resonance of a betatron oscillation, and magnetic polesincluded in a bending magnetof the synchrotronhave a SIM structure that generates a magnetic field distribution that makes the horizontal tune of the charged particle more closely approach a resonant line used in the slow extraction method as the amplitude of the horizontal betatron oscillation of a charged particle included in the charged particle beam becomes larger.