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 ma...

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Bibliographic Details
Published inReview of scientific instruments Vol. 83; no. 2; p. 02A704
Main Authors Lawrie, S R, Faircloth, D C, Philippe, K
Format Journal Article
LanguageEnglish
Published United States 01.02.2012
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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:1089-7623
DOI:10.1063/1.3662959