Posts by BTG

Universal lower limit on vortex creep in superconductors

Eley at al. propose the existence of a universal minimum realizable S ~ Gi1/2(T/Tc) (Tc is the superconducting transition temperature, and  Gi = (γ2/2)[(μ0kBTc)/(4πBc2(0)ξab3(0))]2 ∝ γ2Tc2λ4/ξ2, The Ginzburg number, parameterizes the scale of thermal fluctuations in a superconductor) that has been achieved in our films and few other materials, and is violated by none. Eley,…

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Ic performance of 2G conductors from various manufacturers

Kiyosumi Tsuchiya et al. from Tsukukuba compared performance of 2G conductors from Fujikura Ltd.; SuNAM Co. Ltd.; SuperOx Japan LLC; and SuperPower Inc.. Tsuchiya, K., A. Kikuchi, A. Terashima, K. Suzuki, K. Norimoto, M. Tawada, M. Masuzawa, N. Ohuchi, X. Wang, Y. Iijima, T. Takao, S. Fujita, M. Daibo, and Y. Iijima, Critical Current Characterization of…

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Our paper “Exfoliated YBCO filaments for second-generation superconducting cable” is published

Our paper, “Exfoliated YBCO filaments for second-generation superconducting cable” is published in “Superconductor Science and Technology“. The paper is a summary of our Phase I SBIR project, “Second Generation Superconducting Cable with Exfoliated YBCO Filaments”, U.S. DOE Office of Science SBIR Phase I award DE-SC0013856. The paper is published as a part of focus issue ” Selected work from…

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BTG wins DOE SBIR Phase II award

Second Generation Superconducting Cable with Exfoliated YBCO Filaments—Brookhaven Technology Group, Inc., Stony Brook, NY, 1000 Innovation Rd., Stony Brook, NY 11794-6044 Abstract High temperature superconducting wire (HTS) technology has a significant potential to become the wire of choice for helium-free, ultra-high field magnet systems. High-field, helium-free magnet systems are attracting more interest as the world…

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BTG wins DOE SBIR Phase I Award

Beam positioning monitor based on large area HTS pickup coils   Brookhaven Technology Group (BTG) and STAR Cryoelectronics (STAR) will design and develop a long-base high-temperature superconducting gradiometer instrument capable of detecting position of a particle beam as low as 1 nA. The technology relies on two key innovations. First, the sensing coil structure will…

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