Abstract

In order to produce useful intensities of radioactive ion beams, ISOL targets must be designed that can withstand direct irradiation with high power beams. Computational thermal modeling techniques offer a cost effective way for evaluating prototype target concepts in the quest to find an optimum design. In this report, a number of codes are utilized to select target materials and to model the primary beam power density, thermal transport and temperature distributions in ISOL targets. These studies suggest that radiation cooling, in combination with Lissajous beam scan techniques, can be used to control temperatures in practically sized targets, to levels commensurate with irradiation with 1-GeV, 400-kW proton beams for next generation RIB facilities.

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