Thumbnail
Access Restriction
Open

Author Feng, X. ♦ Nornberg, M. D. ♦ Den Hartog, D. J. ♦ Oliva, S. P. ♦ Craig, D.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ♦ BEAM CURRENTS ♦ BEAMS ♦ CAMERAS ♦ CHARGE-COUPLED DEVICES ♦ DENSITY ♦ DIAGNOSTIC TECHNIQUES ♦ DOPPLER EFFECT ♦ ELECTRONS ♦ HYDROGEN ♦ ION SOURCES ♦ IONS ♦ SPECTROMETERS
Abstract A grating spectrometer with an electron multiplying charge-coupled device camera is used to diagnose a 50 kV, 5 A, 20 ms hydrogen diagnostic neutral beam. The ion source density is determined from Stark broadened H{sub β} emission and the spectrum of Doppler-shifted H{sub α} emission is used to quantify the fraction of ions at full, half, and one-third beam energy under a variety of operating conditions including fueling gas pressure and arc discharge current. Beam current is optimized at low-density conditions in the ion source while the energy fractions are found to be steady over most operating conditions.
ISSN 00346748
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-11-15
Publisher Place United States
Journal Review of Scientific Instruments
Volume Number 87
Issue Number 11


Open content in new tab

   Open content in new tab