Spectroscopic determination of the composition of a 50 kV hydrogen diagnostic neutral beam

Journal Article · Tue Nov 15 00:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4961269· OSTI ID:22596411

Feng, X.; Den Hartog, D. J.; Oliva, S. P. ^[1]; Craig, D. ^[2]

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1. Department of Physics, University of Wisconsin–Madison, 1150 University Ave., Madison, Wisconsin 53706 (United States)
2. Wheaton College, Wheaton, Illinois 60187 (United States)

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.

• OSTI ID: 22596411
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 11; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 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