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:
May. 27, 2014
Filed:
Nov. 29, 2011
Nobuyuki Haruna, Chiyoda-ku, JP;
Katsuhisa Yoshida, Chiyoda-ku, JP;
Masahiro Ikeda, Chiyoda-ku, JP;
Kengo Sugahara, Chiyoda-ku, JP;
Hirofumi Tanaka, Chiyoda-ku, JP;
Nobuyuki Haruna, Chiyoda-ku, JP;
Katsuhisa Yoshida, Chiyoda-ku, JP;
Masahiro Ikeda, Chiyoda-ku, JP;
Kengo Sugahara, Chiyoda-ku, JP;
Hirofumi Tanaka, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
A circular accelerator comprises a target current value memory which stores a target current value of a beam current of charged particle which is extracted from an extracting device; and a frequency determination part in which a frequency change ratio is obtained by performing a feedback control based on an error signal between a detection signal of a beam current detector and a target current value which is stored in a target current value memory, and determines a subsequent frequency from the obtained frequency change ratio and a current frequency, wherein the subsequent frequency which is determined by the frequency determination part is stored in a frequency memory and a radio-frequency generator generates the subsequent radio-frequency of frequency which is determined.