Seungyong Hahn, Youngjae Kim, Jungbin Song, John Voccio, Jiayin Ling, Juan Bascuñán, and Yukikazu Iwasa November, 2013 Francis Bitter Magnet Laboratory, Plasma Science and Fusion Center Massachusetts Institute of Technology Cambridge MA 02139 USA This work was supported by the National Institute of Biomedical Imaging and Bioengineering of the National Institutes of Health under Award Number R21EB013764. Reproduction, translation, publication, use and disposal, in whole or in part, by or for the United States government is permitted. Submitted to IEEE Trans. Appl. Supercond. PSFC/JA-14-65 A 78-mm/7-T Multi-Width No-Insulation REBCO Magnet: Key Concept and Magnet Design