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:
Mar. 05, 1991
Filed:
Jun. 08, 1989
Applicant:
Inventors:
Kenji Miyata, Katsuta, JP;
Masatsugu Nishi, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05H / ;
U.S. Cl.
CPC ...
328233 ; 315-512 ; 328230 ;
Abstract
A wake field acceleator in which a current to be formed by a driving charged particle bunch that excites a wake field is controlled so as to compensate a Joule heat loss on the wall surface of a cavity constituting the wake field accelerator, and to subject the driving charged particle bunch to a substantially uniform deceleration voltage. With the wake field accelerator, the maximum transformer ratio can be realized with a small beam length of the driving charged particle bunch, and an energy extraction efficiency of approximately 100% can be realized.