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Title: Experimental study of ion beam optics in a two-stage accelerator

Abstract

Hydrogen ion beam optics in a two-stage linear acceleration system is studied by examining the beam divergence as a function of the voltage and gap distribution, the beam perveance, the background gas pressure, the aspect ratio, and the total accelerating energy (60-110 keV). The system consists of four electrodes with single, cylindrical, straight-bore apertures acting as an extraction-accel--decel column. An optimum relation between the field ratio and the extraction perveance is obtained from measurements for the minimum beam divergence condition. The HWHM divergence angle is <0.3/sup 0/ under optimum conditions. Qualitative agreement between the measurements and a previous theoretical study is noticed. A potential application of the results to high energy neutral beam injectors for fusion research is also discussed.

Authors:
; ;
Publication Date:
Research Org.:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
OSTI Identifier:
6779774
Alternate Identifier(s):
OSTI ID: 6779774
Resource Type:
Journal Article
Journal Name:
Rev. Sci. Instrum.; (United States)
Additional Journal Information:
Journal Volume: 50:2
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; HYDROGEN MINUS 1 BEAMS; BEAM OPTICS; LINEAR ACCELERATORS; ASPECT RATIO; BEAM EXTRACTION; ENERGY; NEUTRAL ATOM BEAM INJECTION; PLASMA HEATING; PLASMA PRESSURE; ACCELERATORS; BEAM INJECTION; HEATING 430200* -- Particle Accelerators-- Beam Dynamics, Field Calculations, & Ion Optics; 700101 -- Fusion Energy-- Plasma Research-- Confinement, Heating, & Production

Citation Formats

Kim, J., Gardner, W.L., and Menon, M.M. Experimental study of ion beam optics in a two-stage accelerator. United States: N. p., 1979. Web. doi:10.1063/1.1135787.
Kim, J., Gardner, W.L., & Menon, M.M. Experimental study of ion beam optics in a two-stage accelerator. United States. doi:10.1063/1.1135787.
Kim, J., Gardner, W.L., and Menon, M.M. Thu . "Experimental study of ion beam optics in a two-stage accelerator". United States. doi:10.1063/1.1135787.
@article{osti_6779774,
title = {Experimental study of ion beam optics in a two-stage accelerator},
author = {Kim, J. and Gardner, W.L. and Menon, M.M.},
abstractNote = {Hydrogen ion beam optics in a two-stage linear acceleration system is studied by examining the beam divergence as a function of the voltage and gap distribution, the beam perveance, the background gas pressure, the aspect ratio, and the total accelerating energy (60-110 keV). The system consists of four electrodes with single, cylindrical, straight-bore apertures acting as an extraction-accel--decel column. An optimum relation between the field ratio and the extraction perveance is obtained from measurements for the minimum beam divergence condition. The HWHM divergence angle is <0.3/sup 0/ under optimum conditions. Qualitative agreement between the measurements and a previous theoretical study is noticed. A potential application of the results to high energy neutral beam injectors for fusion research is also discussed.},
doi = {10.1063/1.1135787},
journal = {Rev. Sci. Instrum.; (United States)},
number = ,
volume = 50:2,
place = {United States},
year = {1979},
month = {2}
}