Parts | Days | Selection | Search | Downloads | Help
P: Plasmaphysik
P 28: Sonstiges (Poster)
P 28.8: Poster
Monday, March 9, 1998, 18:00–20:00, P 2
Guiding of D2 pellets in a funnel — •R.S. Lang1, L. Hu2, P.T. Lang1, A. Lorenz1, G. Weber1, and ASDEX Upgrade Team1 — 1Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, 85748 Garching — 2Institute of Plasma Physics, Academia Sinica, P.O.Box 1126, Hefei, Anhui 230031, P.R. China
Injection of Deuterium (D2)-Pellets from the magnetic high-field side into a neutral beam heated tokamak plasma has shown to be a very efficient particle refuelling method [1]. In this completely new scenario transport of pellets accelerated by a centrifuge injector is performed in a guiding tube. A funnel is employed to get the pellets into the small cross section of such a guiding tube. There was no information available about transport of D2 pellets in a funnel. We have done experiments to explore interaction of D2 pellets with different target materials by flash videography and by a mechanical method. The results of this investigations are the mechanical damping in solid D2 during the impact at a pellet temperature of about 6K and the tendency to disintegrate at different impact velocities. Experimental details and results are presented.
[1] P. T. Lang, et al., Phys. Rev. Lett. 79 (8), 1487 (1997)