Applied-B field ion diode studies at 3.5 TW

The performance of 7 and 14 cm radius, applied B-field, focusing ion diodes is investigated on the Proto II accelerator at a diode power of 3.5 TW. The ion production efficiency of the 14-cm diode is determined to be approximately 80% for the 30-ns power pulse used. When a 2 Torr air background gas...

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Bibliographic Details
Published inJournal of applied physics Vol. 54; no. 5; pp. 2230 - 2241
Main Authors Johnson, D. J., Dreike, P. L., Slutz, S. A., Leeper, R. J., Burns, E. J. T., Freeman, J. R., Mehlhorn, T. A., Quintenz, J. P.
Format Journal Article
LanguageEnglish
Published 01.05.1983
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Summary:The performance of 7 and 14 cm radius, applied B-field, focusing ion diodes is investigated on the Proto II accelerator at a diode power of 3.5 TW. The ion production efficiency of the 14-cm diode is determined to be approximately 80% for the 30-ns power pulse used. When a 2 Torr air background gas was used in the beam propagation region between the diode and the target, the ion beam was observed to be approximately 70% magnetically neutralized in regions of approximately 20 kG transverse B-field and ≥95% in regions of no B-field. The local and global divergence of the 1.4-MV beam were each determined to be approximately 1°. Local source power brightness of >1.5×1013 W/cm2/rad2 is inferred.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.332377