α - Particle and NBI - Ion Deposition in a Compact Spherical Tokamak due to Slowing Down

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Codes NFREYA and TORUS II are used to calculate the α - particle containment and loading as well as the power deposition and the driven current in ST40 high field spherical tokamak. First orbit approximation and complete slowing down orbits, needing 6.25 107 computed orbit points approximately, were used. We show that for ST40 conditions, the containment depends mainly on the peaking parameter of the density profile (p~2) which can be reached by the pellet injection. The maximum containment in the case of slowing down orbits is around 0.25 agreeing roughly with the first orbit guiding center calculations.
Original languageEnglish
Title of host publicationProceedings of the 45th EPS Conference on Plasma Physics
Number of pages4
Volume42A
PublisherEuropean Physical Society (EPS)
Publication date2018
Pages185-188
Article numberP1.1001
ISBN (Electronic)979-10-96389-08-7
Publication statusPublished - 2018
Event45th EPS Conference on Plasma Physics, EPS 2018 - Prague, Czech Republic
Duration: 2 Jul 20186 Jul 2018

Conference

Conference45th EPS Conference on Plasma Physics, EPS 2018
CountryCzech Republic
CityPrague
Period02/07/201806/07/2018

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