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Journal of Nuclear Materials 72 (1978) 147-167 0 North-Holland Publishing Company

Summary: Journal of Nuclear Materials 72 (1978) 147-167
0 North-Holland Publishing Company
Applied PhysicsDivision,Argonne NationalLaboratory, Argonne, Illinois 60439, USA
Superconducting magnets are believed to be necessary for fusion power reactors. High flux levels of neutrons and
secondary gamma rays in these reactors require extensive radiation shielding to protect the components of the super-
conducting magnets from intolerable radiation damage and energy deposition. In this paper, radiation environment for
the magnets is characterized for various conditions expected for tokamak power reactor operation. The radiation levels are
translated into radiation effects using available experimental data. The impact of the tradeoffs in radiation shielding and
the change in the properties of the superconducting magnets on reactor performance and economics is examined. It is
shown that (1) superconducting magnets in fusion reactors will operate at much higher radiation level than was previously
anticipated; (2) additional data on radiation damage is required to better accuracy than is presently available in order to
accurately quantify the change in properties in the superconducting magnet components; and (3) there is a substantial
penalty for increasing (or overestimating) the shielding requirements. Therefore there is a strong incentive to explore all
important options that lead to lower radiation damage at a given radiation level.
Des aimants supraconducteurs sont estimks necessaires aux reacteurs de puissance de fusion. Les niveaux de flux elev&
et les rayons gamma secondaires darts ces r6acteurs exigent des dcrans contre les radiations volumineux pour protdger les
composants des aimants supraconducteurs vis-&is de dommages par irradiation intolerables et de deposition d'dnergie.
Dans ce travail, l'environnement d'irradiatidnpour les aimants est caracterisd en fonction des diverses conditions qu'on peut


Source: Abdou, Mohamed - Fusion Science and Technology Center, University of California at Los Angeles


Collections: Plasma Physics and Fusion