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Handling of deuterium pellets for plasma refuelling

P B Jensen and V Andersen

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The use of a guide tube technique to inject pellets in pellet-plasma experiments is described. The effect of the guide tube on the mass and speed of a slowly moving pellet ( nu approximately 150 m s-1) is negligible. To improve the divergence in trajectories of the pellets on leaving the guide tube a specially formed brass slide has been developed, which improves the aiming accuracy by a factor of 10. A simple method for determining the mass of larger pellets by means of a plate capacitor through which the pellets are shot is described. A method for small pellets as well has been investigated. This scheme employs a microwave cavity operating at aroung 9 GHz.


PACS

28.52.Cx Fueling, heating and ignition

52.40.-w Plasma interactions (nonlaser)

52.55.Fa Tokamaks, spherical tokamaks

Subjects

Nuclear physics

Plasma physics

Dates

Issue 5 (14 May 1982)



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