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. 21, 1993
Filed:
May. 06, 1991
Applicant:
Inventor:
Kenneth H Purser, Lexington, MA (US);
Assignee:
High Voltage Engineering Europa B.V., Amersfoort, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
328233 ; 3133601 ;
Abstract
An injection system for a tandem accelerator with equal transmission efficiency over a broad energy range includes means for shielding the injected ion beam from the electric field within the grounded end of the low-energy acceleration tube and injecting the ion beam into the low-energy acceleration tube sequentially through a narrow acceleration gap and the shielded region.