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Title: Neutral beamline with ion energy recovery based on magnetic blocking of electrons

Abstract

A neutral beamline generator with energy recovery of the full-energy ion component of the beam based on magnetic blocking of electrons is provided. Ions from a positive ion source are accelerated to the desired beam energy from a slightly positive potential level with respect to ground through a neutralizer cell by means of a negative acceleration voltage. The unneutralized full-energy ion component of the beam exiting the neutralizer are retarded and slightly deflected and the elecrons in the neutralizer are blocked by a magnetic field generated transverse to the beamline. An electron collector in the form of a coaxial cylinder surrounding and protruding axial a few centimeters beyond the neutralizer exit terminates the electrons which exit the neutralizer in an E x B drift to the collector when the collector is biased a few hundred volts positive with respect to the neutralizer voltage. The neutralizer is operated at the negative acceleration voltage. The neutralizer is operated at the negative acceleration voltage, and the deflected full energy ions are decelerated and the charge collected at ground potential thereby expending none of their energy received from the acceleration power supply.

Inventors:
Issue Date:
OSTI Identifier:
6533699
Assignee:
Dept. of Energy TIC; ERA-06-019114; EDB-81-058351
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM NEUTRALIZATION; BEAM SEPARATORS; CHARGE COLLECTION; CATIONS; ELECTRONS; BEAM TRANSPORT; CHARGED PARTICLES; ELEMENTARY PARTICLES; FERMIONS; IONS; LEPTONS; 430200* - Particle Accelerators- Beam Dynamics, Field Calculations, & Ion Optics

Citation Formats

Stirling, W.L. Neutral beamline with ion energy recovery based on magnetic blocking of electrons. United States: N. p., 1980. Web.
Stirling, W.L. Neutral beamline with ion energy recovery based on magnetic blocking of electrons. United States.
Stirling, W.L. Tue . "Neutral beamline with ion energy recovery based on magnetic blocking of electrons". United States.
@article{osti_6533699,
title = {Neutral beamline with ion energy recovery based on magnetic blocking of electrons},
author = {Stirling, W.L.},
abstractNote = {A neutral beamline generator with energy recovery of the full-energy ion component of the beam based on magnetic blocking of electrons is provided. Ions from a positive ion source are accelerated to the desired beam energy from a slightly positive potential level with respect to ground through a neutralizer cell by means of a negative acceleration voltage. The unneutralized full-energy ion component of the beam exiting the neutralizer are retarded and slightly deflected and the elecrons in the neutralizer are blocked by a magnetic field generated transverse to the beamline. An electron collector in the form of a coaxial cylinder surrounding and protruding axial a few centimeters beyond the neutralizer exit terminates the electrons which exit the neutralizer in an E x B drift to the collector when the collector is biased a few hundred volts positive with respect to the neutralizer voltage. The neutralizer is operated at the negative acceleration voltage. The neutralizer is operated at the negative acceleration voltage, and the deflected full energy ions are decelerated and the charge collected at ground potential thereby expending none of their energy received from the acceleration power supply.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {7}
}