Development and industrialization of supermirror multilayers used for neutron guides

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Abstract
Great improvements have been made in realizing super-mirrors multilayers, but only on laboratory scale samples. In particular, supermirrors with a cut off twice that of natural nickel and a reflectivity higher than 97% on (10 X 4) cm2 substrates have been obtained. To use such supermirrors in the construction of neutron guides, it was necessary to reach the same results on much larger pieces. We describe the design and set up of special equipment for super polishing the substrates, and sputtering the multilayer-control equipment which has been realized for factory acceptance of each piece.

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