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:
Jul. 19, 2011
Filed:
Nov. 25, 2008
Hirofumi Tanaka, Tokyo, JP;
Takashi Hifumi, Tokyo, JP;
Katsuhisa Yoshida, Tokyo, JP;
Kazuo Yamamoto, Tokyo, JP;
Yoichi Kuroda, Tokyo, JP;
Hirofumi Tanaka, Tokyo, JP;
Takashi Hifumi, Tokyo, JP;
Katsuhisa Yoshida, Tokyo, JP;
Kazuo Yamamoto, Tokyo, JP;
Yoichi Kuroda, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
In a circular accelerator, a magnetic pole edge portion of a bending electromagnet into and from which a charged particle beam enters and exits is provided with endpacks. A first protrusion is provided at that part of each end pack which is radially outside the equilibrium orbit of a center energy beam, while a second protrusion is provided at that part of each end pack which is radially inside the equilibrium orbit of the center energy beam. The shapes of the first and second protrusions are set so that the betatron oscillation numbers of beams of different acceleration energies may be held constant or become linear to the energies. In case of emitting the charged particle beam out of the circular accelerator, the change of a tune attributed to the change of the beam orbit can be statically corrected, the tune is linearly changed, and an adjustment of the emission of the beam becomes easy.