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Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
Kosei Hara, Francis C. Moon
Fusion Science and Technology | Volume 10 | Number 3 | November 1986 | Pages 1548-1553
Magnet Engineering | doi.org/10.13182/FST86-A24953
Articles are hosted by Taylor and Francis Online.
Superconducting magnets have complex structures. The coil pack is made up of alternate layers of superconductor and insulator, which form an extremely unisotropic composite structure. For example, the MFTF magnet design, the transverse stiffness is quite soft as compared to the circumferential stiffness [1]. In this study, cylindrically wound superconducting magnets were modeled by two-dimensional multi-rings connected by soft springs, and the internal vibration and buckling of the system were studied both experimentally and analytically. Since the linear elastic theory used in the previous studies [2,3] has failed to predict buckling and vibration of internal turns in the bending mode, elastic ring theory was used in this study. A model based on ring theory and magnetic stiffness was developed to explain experimental observations and showed a fair to good agreement between experimental and theoretical values of the buckling current.