Category Archives: News

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 MEM16 workshop”.

Journal link.

PDF download.

 

 

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 supply of helium is depleted and new science facilities are demanding magnetic field levels much higher than accessible by niobium-based superconductors. Currently, HTS wire is manufactured as a thin, 1 micron-meter, superconducting layer deposited on a 1 cm wide 100 micron-meter thick metal substrate. Due to this geometry, a magnet wound from the wire suffers from high losses.    Additionally, the mechanically weak interface between the superconductor layer and the ceramic buffer is known to be the most common source of HTS magnet failure. Brookhaven Technology Group (BTG) will develop and demonstrate the feasibility of a new type of cable bundled from exfoliated HTS filaments.

Media coverage:

Innovate Long Island: AERTC Firm Nabs Superconductivity Stipend

Newsday: LI startup gets $1.15M grant for superconducting cable design

 

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 be laser-machined from extra-wide (45 mm) second-generation superconducting tapes. Second, the sensing coils will be magnetically coupled to a high-performance quantum interference sensor, developed by STAR.  The technology is expected to deliver high sensitivity, > 100 micron beam position error, and low cost of ownership.

Funded by Office of Science, Office of Nuclear Physics

BTG filed a provisional patent application “Second Generation Superconducting Filaments and Cable”

On January 21 2016 BTG filed a provisional patent application “Second Generation Superconducting Filaments and Cable”.

The application abstract:

A high-temperature superconducting filament and cable, and a method for manufacturing same. The substrate used to grow the superconducting layer is removed, and the exfoliated superconducting layer is coated with a protective layer, and then sliced into narrow strips. The strips are thereafter encapsulated with a conductive metal to provide a high-temperature superconducting filament. The filaments may be bundled together to provide a high-temperature superconducting cable. The cable assembly may be wrapped with conductive metal foil to provide enhanced electrical and mechanical stability.

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