Development of an advanced ‘‘volume’’ H− source for neutral beam application

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Abstract
Based on recent experimental results made on the large and small multicusp volume H− sources, a new multicusp source has been designed to generate high‐brightness H− or D− beams for high duty factor or dc operations. Cesium will be introduced into the source plasma to enhance the H− output current. Arrangements for reducing the electrons as well as capturing them in the preaccelerator electrodes will be incorporated into the new source geometry.

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