Development of self-cooled liquid metal breeder blankets

The development of liquid metal breeder blankets for fusion reactors has been performed in the Forschungszentrum Karlsruhe as a part of the European fusion blanket development program with the aim to select the two most promising concepts in 1995 for further development. ln this report are described the designs of self-cooled blankets tagether with the results of the accompanying R&D program oftheyears 1992-1995. The program includes design studies as weil as theoretical and experimental work in the fields of neutronics, magneto-hydrodynamics, thermohydraulics, mechanical stresses, compatibility and purification of Iead-Iithium, tritium extraction and control, safety, reliability, electrical insulating coatings, and fabrication technologies for blanket segments. This work has been performed in the framework of the nuclear fusion project of the Kernforschungszentrum Karlsruhe and is supported by the European Union within the European Fusion Technology Program. Entwicklung von selbstgekühlten Flüssigmetaii-Brutblankets Zusammenfassung Die Entwicklung von Flüssigmetaii-Biankets für Fusionsreaktoren erfolgte im Forschungszentrum Karlsruhe als Teil des Europäischen Blanketentwicklungsprogrammes mit dem Ziel, in 1995 die zwei aussichtsreichsten Konzepte zur weiteren Entwicklung auszuwählen. Beschrieben sind in dem Bericht Entwürfe von selbstgekühlten Blankets zusammen mit den Ergebnissen des zugehörigen F + E-Programmes der Jahre 1992-1995. Das Programm umfaßt neben Entwurfsstudien theoretische und experimentalle Arbeiten auf den Gebieten Neutronik, Magnetohydrodynamik, Thermohydraulik, mechanische Spannungen, Verträglichkeit und Reinigung von Blei-Lithium, Tritium-Extraktion und -Permeation, Sicherheit, Zuverlässigkeit, Isolationsschichten, und Fabrikationstechnologien für Blanketsegmente. Die vorliegende Arbeit wurde im Rahmen des Projektes Kernfusion des Forschungszentrums Karlsruhe durchgeführt und ist ein von der Europäischen Union geförderter Beitrag im Rahmen des Fusionstechnologieprogramms.

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