Emittance studies of the Spallation Neutron Source external-antenna H- ion source

被引：6
|
作者：
Han, B. X. [1 ]
Stockli, M. P. [1 ]
Welton, R. F. [1 ]
Pennisi, T. R. [1 ]
Murray, S. N. [1 ]
Santana, M. [1 ]
Long, C. D. [1 ]
机构：
[1] Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2010年 / 81卷 / 02期
关键词：
antennas in plasma; hydrogen ions; ion beams; ion sources; particle beam diagnostics; particle beam extraction; plasma sources;
D O I：
10.1063/1.3292935
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A new Allison-type emittance scanner has been built to characterize the ion sources and low energy beam transport systems at Spallation Neutron Source. In this work, the emittance characteristics of the H(-) beam produced with the external-antenna rf-driven ion source and transported through the two-lens electrostatic low energy beam transport are studied. The beam emittance dependence on beam intensity, extraction parameters, and the evolution of the emittance and twiss parameters over beam pulse duration are presented.
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页数：4
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