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:
Sep. 23, 2025
Filed:
Aug. 06, 2021
Hitachi High-tech Corporation, Tokyo, JP;
Chishin Hori, Tokyo, JP;
Takamitsu Hae, Tokyo, JP;
HITACHI HIGH-TECH CORPORATION, Tokyo, JP;
Abstract
An object of the present invention is to speed up an operation of extracting an ion beam from an accelerator. An acceleratorincludes an upper magnetic poleand a lower magnetic polesandwiching an ion circulation spacein which ions circulate. At least one of the upper magnetic poleand the lower magnetic poleis formed such that a magnetic pole interval between the upper magnetic poleand the lower magnetic polevaries when the ion circulation spaceis viewed along an ion beam trajectory. That is, a wide interval regionhaving a larger magnetic pole interval than a peripheral region is formed in a region closer to a center point of the ion circulation spacethan a center point of the ion beam trajectory.