Conceptual design study of high field magnets for very large hadron collider

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During the last year, Fermilab in collaboration with LBNL and KEK was conducting an extensive design study of a superconducting magnet with a two-layer cosine-theta coil for a post-LHC hadron collider. For the 30-50 mm magnet bore range, two superconducting cable types and various current block arrangements and iron yoke outer diameters were considered. This paper summarizes results of the study including field and force distributions, systematic and random field errors, coil magnetization and iron saturation effects.