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J.W.Goethe University,

By D. Penache, C. Niemann, A. Tauschwitz, R. Knobloch, S. Neff, R. Birkner, C. Penache, M. Geißel L, H. Wahl, D. H. H. Hoffmann, Tu Darmstadt and Gsi Darmstadt

Abstract

In inertial confinement fusion driven by heavy ions a critical issue is the transport of the ion beams through the reactor chamber. To successfully achieve ignition of the fuel pellet the ion beam must have a very well defined temporal and geometrical shape at the target position. In all plant scenarios the reactor has radii of 3-5 m and in some is envisaged to have a gas filling to protect the first wall from the x-rays produced by the pellet explosion [1]. Therefore ion beam transport by means of a discharge channel ignited in the background gas represents an attractive alternative due to neutralization of the beam space charge and electrical current. Since a number of years the transport of heavy ion beams with discharge plasma channels is investigated at the GSI-UNILAC accelerator. In a 0.5 m long cylindrical metallic chamber filled with low-pressure ammonia a rarefaction channels with preferential breakdown conditions is created along the axis by resonant absorptio

Year: 2011
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