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Title: Variable energy constant current accelerator structure

Abstract

A variable energy, constant current ion beam accelerator structure is disclosed comprising an ion source capable of providing the desired ions, a pre-accelerator for establishing an initial energy level, a matching/pumping module having means for focusing means for maintaining the beam current, and at least one main accelerator module for continuing beam focus, with means capable of variably imparting acceleration to the beam so that a constant beam output current is maintained independent of the variable output energy. In a preferred embodiment, quadrupole electrodes are provided in both the matching/pumping module and the one or more accelerator modules, and are formed using four opposing cylinder electrodes which extend parallel to the beam axis and are spaced around the beam at 90/degree/ intervals with opposing electrodes maintained at the same potential. 12 figs., 3 tabs.

Inventors:
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
OSTI Identifier:
6234050
Patent Number(s):
PATENTS-US-A7218390
Application Number:
ON: DE89011438
Assignee:
Dept. of Energy
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATORS; DESIGN; BEAM CURRENTS; BEAM TRANSPORT; ENERGY LEVELS; INVENTIONS; ION BEAMS; ION IMPLANTATION; ION SOURCES; NEUTRAL ATOM BEAM INJECTION; PLASMA CONFINEMENT; BEAM INJECTION; BEAMS; CONFINEMENT; CURRENTS; 430100* - Particle Accelerators- Design, Development, & Operation; 700205 - Fusion Power Plant Technology- Fuel, Heating, & Injection Systems

Citation Formats

Anderson, O. A. Variable energy constant current accelerator structure. United States: N. p., 1988. Web.
Anderson, O. A. Variable energy constant current accelerator structure. United States.
Anderson, O. A. 1988. "Variable energy constant current accelerator structure". United States. https://www.osti.gov/servlets/purl/6234050.
@article{osti_6234050,
title = {Variable energy constant current accelerator structure},
author = {Anderson, O. A.},
abstractNote = {A variable energy, constant current ion beam accelerator structure is disclosed comprising an ion source capable of providing the desired ions, a pre-accelerator for establishing an initial energy level, a matching/pumping module having means for focusing means for maintaining the beam current, and at least one main accelerator module for continuing beam focus, with means capable of variably imparting acceleration to the beam so that a constant beam output current is maintained independent of the variable output energy. In a preferred embodiment, quadrupole electrodes are provided in both the matching/pumping module and the one or more accelerator modules, and are formed using four opposing cylinder electrodes which extend parallel to the beam axis and are spaced around the beam at 90/degree/ intervals with opposing electrodes maintained at the same potential. 12 figs., 3 tabs.},
doi = {},
url = {https://www.osti.gov/biblio/6234050}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {7}
}