Abstract
An effective helium-ash exhaust from the tokamak edge region using reduced helium recycling by divertor plate biasing is numerically studied. The amount of the passing neutral particles is calculated taking into account the reflection on the divertor plate and the recycling process of the reflected neutrals between the divertor and the SOL plasma. The ion incident energy is determined by the sheath voltage, which is controlled by the divertor biasing. Numerical studies show that the optimum structure of the divertor plate and the pump ducts, and the control of the ion energy imply a possibility of selective helium-ash exhaust. In this calculation we obtain an enhancement factor of about 3 for the ratio of helium to deuterium incident on the divertor plate.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
