Geometrical efficiency of the prototype neutral beam injector unit for JT-60
- 1 August 1983
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 54 (8), 921-927
- https://doi.org/10.1063/1.1137503
Abstract
The geometrical efficiency of the prototype neutral beam injector unit for the JT-60 was measured experimentally and was compared with numerical estimates. The measurements agreed well with the calculations in the wide range of perveance by taking into account the distortion of the beamlet intensity distribution function from a Gaussian distribution. Overdense operation of the ion source was preferable in that the high geometrical efficiency could be obtained at high perveance values.Keywords
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