Forced convection target assembly

Details Forced convection target assembly Forced convection target assembly

G - Physics

21

K

G21K 5/00 (2006.01) G21K 5/08 (2006.01)

Patent

CA 2572022

Provided is a modified target assembly in which the target fluid is moved within the target assembly in a manner that increases the effective density of the target fluid within the beam path, thereby increasing beam yield utilizing forced convection. The target may also include optional structures, such as nozzles, diverters and deflectors for guiding and/or accelerating the flow of the target fluid. The target assembly directs the target fluid along an inner sleeve in a direction opposite the direction of the beam current to produce a counter current flow and may also direct the flow of the target fluid away from the inner surface of the inner sleeve and toward a central region in the target cavity. This countercurrent flow suppresses natural convection that tends to reduce the density of the target fluid in the beam path and tends to increase the heat transfer from the target.

L'invention concerne un ensemble cible modifié au sein duquel le fluide cible est déplacé de manière à accroître la densité efficace du fluide cible à l'intérieur de la voie de faisceau, ce qui permet d'accroître le rendement du faisceau au moyen d'une force de convection. La cible peut aussi comprendre des structures facultatives, telles que des buses, des dispositifs de déviation et des déflecteurs permettant de guider et/ou d'accélérer le flux du fluide cible. Cet ensemble cible peut diriger le fluide cible le long d'un manchon interne dans une direction opposée à la direction du courant de manière à produire un flux de contre-courant et peut également éloigner le flux de fluide cible de la surface interne du manchon interne et l'amener vers une région centrale dans la cavité cible. Ce flux de contre-courant supprime la convection naturelle qui tend à diminuer la densité du fluide cible dans la voie de faisceau et à augmenter le transfert thermique provenant de la cible.

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