Initial study of the optical spectrum of the ISIS H − ion source plasma

The front end test stand is being constructed at the Rutherford Appleton Laboratory, with the aim of producing a 60 mA, 2 ms, 50 Hz, perfectly chopped H − ion beam. To meet the beam requirements, a more detailed understanding of the ion source plasma is required. To this end, an initial study is mad...

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Bibliographic Details
Published in:Review of scientific instruments 2012-02, Vol.83 (2), p.02A704-02A704-3
Main Authors: Lawrie, S. R., Faircloth, D. C., Philippe, K.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Beams (radiation)
CESIUM
Construction
Digital
ELECTRON TEMPERATURE
Emission
HYDROGEN
HYDROGEN IONS 1 MINUS
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ION BEAMS
ION SOURCES
LINE WIDTHS
PLASMA
PROTON SPECTRA
SPECTROMETERS
Test stands
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Summary:The front end test stand is being constructed at the Rutherford Appleton Laboratory, with the aim of producing a 60 mA, 2 ms, 50 Hz, perfectly chopped H − ion beam. To meet the beam requirements, a more detailed understanding of the ion source plasma is required. To this end, an initial study is made of the optical spectrum of the plasma using a digital spectrometer. The atomic and molecular emission lines of hydrogen and caesium are clearly distinguished and a quantitative comparison is made when the ion source is run in different conditions. The electron temperature is 0.6 eV and measured line widths vary by up to 75%.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.3662959