The performance specifications for ALS insertion devices require detailed knowledge and strict control of the Nd-Fe-B permanent magnet blocks incorporated in these devices. This paper describes the measurement and inspection apparatus and die procedures designed to qualify and characterize theseblocks. A detailed description of a new, automated Hclmholtz coil facility for measurement of die diree components of magnetic moment is included. Physical block inspection and magnetic moment measurement procedures arc described. Together they provide a basis for qualifying blocks and for specifying place ment of blocks within an insertion devices* magnetic structures.
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