Supramagnetics, Inc.

Plantsville, CT, United States

Supramagnetics, Inc.

Plantsville, CT, United States
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Motowidlo L.R.,Supramagnetics, Inc. | Lee P.J.,Applied Superconductivity Center | Larbalestier D.C.,Applied Superconductivity Center | Ghosh A.K.,Brookhaven National Laboratory
IEEE Transactions on Applied Superconductivity | Year: 2011

We report the effect of titanium on the transport properties of multifilament PIT strand. In addition, the effect of second phase yttrium additions on the microstructure and the bulk pinning force are reported for PIT Nb3Sn mono-core wires. High resolution SEM, EDS, magnetization, and transport measurements were utilized to evaluate the superconducting properties. © 2010 IEEE.


Damborsky K.,Accelerator Technology Corp. | Damborsky K.,Texas A&M University | Lu F.,Texas A&M University | McIntyre P.,Accelerator Technology Corp. | And 4 more authors.
AIP Conference Proceedings | Year: 2014

Bi-2212 monocore conductors have been fabricated using a high-density pre-textured Bi-2212 precursor. The conductors have been reacted using two methodologies: a non-melt (sintering) heat treatment, and a traditional partial-melt processing. Textured precursors are mechanically fabricated via a die stamping process that both textures and increases the density of the Bi-2212 component. The precursors were jacketed in Ag and successfully extruded and drawn without sausaging. Results of the fabrication process, critical current measurements (4.2 K, 5 T), and microstructure studies will be presented. © 2014 AIP Publishing LLC.


Sattarov A.,Texas A&M University | McIntyre P.,Texas A&M University | Motowidlo L.,Supramagnetics, Inc.
IEEE Transactions on Applied Superconductivity | Year: 2015

The design of a 1.5-T superconducting magnet for open MRI for breast imaging is described. The homogeneous field region is designed to lie above the surface of the unit, so that it includes both breasts for a woman lying prone upon the surface. The magnet was designed using a novel approach to optimizing the field, and the coil structure utilizes a novel structured coil strategy that makes it possible to produce the patterns of current required in the design. © 2014 IEEE.


Myers C.S.,Ohio State University | Susner M.A.,Ohio State University | Motowidlo L.,Supramagnetics, Inc. | Distin J.,Supramagnetics, Inc. | And 2 more authors.
IEEE Transactions on Applied Superconductivity | Year: 2011

In this work, a new strand design for Bi-2212 conductors was studied. The new design had a single stack approach with randomly oriented but densely packed two-dimensional Bi-2212 filaments. This Bi-2212 Two-Dimensional Random-Oriented Single-Stack (2D-ROSS) Round Wire design led to high levels of grain texture and significant amounts of Ag-superconductor interface within the filaments, while maintaining a high strand fill factor. This new design was compared to a strand made with a conventional billet layout. Heat treatments were performed under 100% flowing oxygen, and the samples were melt processed at 884, 886, 888, and 891°C. The strands were studied via transport, magnetic, and electron optics techniques. The strands manufactured with the new process showed higher critical currents than the standard design strands in terms of engineering critical current density J e but slightly lower layer critical current density (J c). However both strand sets were limited by filament sizes which were not yet optimized and excessive C-content in the powders.J e values of 48 A/mm 2 for the new strand design, and 26 A/mm 2 for the conventional double stack design, at 12 T and 4.2 K were observed. An interesting property of the new strand method was that the strands were less sensitive to small heat treatment, HT, temperature variations in terms of their final properties. Magnetic and microstructure/phase assemblage studies observed less filament bridging in the new strand design as compared to the conventional one. © 2010 IEEE.


Myers C.S.,Ohio State University | Susner M.A.,Ohio State University | Motowidlo L.,Supramagnetics, Inc. | Distin J.,Supramagnetics, Inc. | And 2 more authors.
IEEE Transactions on Applied Superconductivity | Year: 2013

In this work, pulse calorimetry was used to measure the specific heats of four superconducting materials at temperatures from 0 to 300 K and in magnetic fields from 0 to 14 T. Specific heat measurements were performed on Bi2212 round wire samples with a two-dimensional random oriented single stack design, made by Supramagnetics Inc., and a conventional design made by Oxford Superconductor. Specific heat measurements were also performed on a copper-stabilized MgB 2 wire sample and a rod-in-tube type Nb3Sn wire sample made by Hyper Tech Research, which were subject to their appropriate heat treatments. All wire sample lengths were ∼3 mm. The specific heats of the Bi2212 samples were relatively independent of applied field; the zero field specific heat of the two-dimensional random oriented single stack sample increased from 0.155 mJ/g-K at 4 K to 254 mJ/g-K at 250 K. At 2 K, the specific heat of the Nb3Snrod-in-tube strand increased from 0.0257 mJ/g-K at 0 T to 0.0716 mJ/g-K at 14 T. In zero field the specific heat of the MgB 2 sample increased from 0.623 mJ/g-K at 4 K to 382 mJ/g-K at 250 K. © 2002-2011 IEEE.


Motowidlo L.R.,Supramagnetics, Inc.
AIP Conference Proceedings | Year: 2012

Artificial ferromagnetic pinning centers in Nb0.36Ti 0.64 can attain more than double the critical current density, J c, values at around 2 T compared to conventionally processed niobium-titanium composites. In this paper, the design and results are presented for low applied magnetic field utilizing a three step fabrication process. © 2012 American Institute of Physics.


Grant
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 861.72K | Year: 2010

To do physics at higher energy collisions require energy and luminosity. More luminosity means larger apertures and bigger magnets. To develop high field magnets will require higher performance low-cost Nb3Sn Superconductors. The cost-performance of state-of-the-art commercial Nb3Sn strand is $3/kA-m to $5/kA-m. By development of lower cost processing and materials, powder-in-tube (PIT) Nb3Sn wire will improve the cost-performance to less than $1.00/kA-m for use in high field magnets for future High Energy Physics (HEP) accelerator research. The overall technical approach for the Phase I/Phase II project will be to develop and demonstrate a substantially lower strand costs for the PIT process. A new low-cost intermetallic tin powder will be introduced within a low-cost novel PIT conductor design. In the Phase I work, we have successfully fabricated a multifilament PIT (Nb,Ti,Zr)3Sn quaternary conductor for high field 15-20 Tesla magnet applications. This was achieved via a low-cost titanium doped tin powder core in Nb-1%Zr tubes. In the proposed development program, the main goal in the Phase II work will be to continue development and optimization of the (Nb,Ti,Zr)3Sn A-15 layer and properties in PIT conductors demonstrated in the Phase I work. Another goal of the Phase II work will be to demonstrate scale-up and produce significant amount of advanced (Nb,Ti,Zr)3Sn material for the DOE national conductor programs. The improved cost-performance for this new PIT Nb3Sn conductor will have an immediate benefit for high field magnets in HEP applications. Particularly, the second generation LHC interaction region magnets including both quadrapole and dipole magnets will require bigger apertures and higher peak fields. Another important application for Nb3Sn superconductors are fusion reactors. The successful demonstration of a prototype fusion machine based on an advanced cost effective Nb3Sn conductor will have enormous economic and social benefits to the public. The application of NMR is on the verge of technological explosion with requirements for uses in chemical research, biochemistry, pharmaceutical chemistry, polymer science, petroleum research, agricultural chemistry and medicine. Giant strides by researchers are being made in understanding of cells, proteins, DNA, and drug interactions to name a few. Any advances in the development of high performance-cost effective superconductors will help bring these powerful research tools into wider use for the general benefit of the public. Commercial Applications and Other Benefits: A new economical Nb3Sn superconductor with advanced performance will be developed for high field magnets utilized in high energy physics research, fusion machines, and MRI and NMR instruments for the general benefit of the public.


Grant
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 903.97K | Year: 2010

The development of an extrudable APC NbTi superconductor with Ni artificial pinning centers by the proposed approach in the Phase I and Phase II program is anticipated to have a significant impact on cost and performance in applications for undulator magnets. The overall technical approach for the Phase I/Phase II project will be to develop and demonstrate an extrudable NbTi superconductor with ferromagnetic pins as undulators. The critical aspects of the conductor design will include optimizing pin size and distribution in order to maximize the bulk pinning force of the conductor. Utilizing a hot extrusion process will help indicate commercial scale up issues and market potential for artificial pinning center (APC) technology. In the Phase I work, we successfully fabricated APC wire with nickel pins approaching 10 nanometers. Moreover, the (Jc) performance of the APC wire was 10,822 Amp/mm2 at 2 Tesla. In the Phase II research and development program, the primary technical objective will be two fold, first to continue to improve the APC flux pinning and Jc performance at the applied field of 1 to 3 Tesla regime by incorporating nickel flux pinning centers. The second primary objective will be to demonstrate a scale-up process that includes two hot extrusions of 152 mm od billets. Commercial Applications and Other Benefits: While undulator magnets are important for future photon sources, nuclear magnetic resonance (NMR) magnets have the nearest term commercial potential. The current NMR market includes spectrometers up to operating frequencies of 800 MHz. Any additional improvements in NbTi superconductors which are included in the outer sections of the NMR magnets could impact the cost of these high end spectrometers. The total NMR market is on the order of a quarter to a half billion dollars and growing. Such systems require magnets generating fields up to 18T range. NMR spectroscopy is a non-destructive technique for mapping molecular structures and learning how molecules function and relate to each other. This is important for many applications that have benefits to the public including discovering new drugs, evaluating new synthetic materials, and exploring the realm of the proteomics. Nb-47Ti, Superconductor, Hot Extrusion, Artificial Pinning Centers, Ferromagnet. A new economical NbTi superconductor with advanced performance will be developed for undulator magnets, MRI, and NMR instruments for the general benefit of the public.


Grant
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 147.66K | Year: 2013

The development of an APC Nb3Sn superconductor with tin-pin artificial pinning centers by the proposed approach in the Phase I program, is anticipated to have a significant impact on cost and performance in applications for undulator magnets. The overall technical approach for the Phase I project will be to develop and demonstrate an Nb3Sn superconductor with tin-Al2O3 pins for HEP magnets. The critical aspects of the conductor design will include optimizing pin size and distribution in order to maximize the bulk pinning force of the conductor. To prove the feasibility of of the tin- Al2O3 APC Nb3Sn superconductors in the Phase I work, 32 mm od billets by 250 mm long will be fabricated for each restack step. The billets will be drawn to the next restack assembly size. This will be repeated through the final fourth step. If the feasibility study proves to be successful, then larger diameter billets will be planned for the Phase II work plan to reduce the steps, increase piece lengths, and reduce cost. Commercial Applications and Other Benefits: While HEP magnets are important for future LHC upgrads, nuclear magnetic resonance (NMR) magnets have the nearest term commercial potential. The current NMR market includes spectrometers up to operating frequencies of 800 MHz. Any additional improvements in Nb3Sn superconductors which are included in the inner sections of the NMR magnets could impact the cost of these high end spectrometers. The total NMR market is on the order of a quarter to a half billion dollars and growing. Such systems require magnets generating fields up to 18T range. NMR spectroscopy is a non- destructive technique for mapping molecular structures and learning how molecules function and relate to each other. This is important for many applications that have benefits to the public including discovering new drugs, evaluating new synthetic materials, and exploring the realm of the proteomics. Another major market for the product will MRI magnets. With the rising cost of health care, any new innovation to reduce cost would be very welcomed.


Grant
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 999.72K | Year: 2014

The development of an APC Nb3Sn superconductor with tin-pin artificial pinning centers by the proposed approach in the Phase II program, is anticipated to have a significant impact on cost and performance in applications for undulator magnets. The overall technical approach for the Phase II project will be to continue optimization of an Nb3Sn superconductor with advanced properties for HEP magnets. In the Phase I work, we fabricated powder-in-tube monocore wire samples with containing thousands of tin-pin cores. The 1 to 2 micron size tin cores allowed lower heat treatment temperature to produce less than 50 nanometer size Nb3Sn grains. Detailed SEM and EDS analysis and Magnetization measurements was performed to characterize the superconducting properties. The Phase I work successfully demonstrated the feasibility of fabricating several thousand tin cores in a monowire. While HEP magnets are important for future LHC upgrads, nuclear magnetic resonance (NMR) magnets have the nearest term commercial potential. The current NMR market includes spectrometers up to operating frequencies of 800 MHz. Any additional improvements in Nb3Sn superconductors which are included in the inner sections of the NMR magnets could impact the cost of these high end spectrometers. The total NMR market is on the order of a quarter to a half billion dollars and growing. Such systems require magnets generating fields up to 18T range. NMR spectroscopy is a non- destructive technique for mapping molecular structures and learning how molecules function and relate to each other. This is important for many applications that have benefits to the public including discovering new drugs, evaluating new synthetic materials, and exploring the realm of the proteomics. Another major market for the product will MRI magnets. With the rising cost of health care, any new innovation to reduce cost would be very welcomed.

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