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CEC/ICMC 2023 Abstracts & Technical Program

9–13 Jul 2023
Hawaii Convention Center
US/Hawaii timezone

Conference Management: Centennial Conferences

Session

M1Or3F: Nb3Sn, MgB2, BSCCO Wires and Joints

10 Jul 2023, 16:15
318

318

Conveners

M1Or3F: Nb3Sn, MgB2, BSCCO Wires and Joints

  • Fang Wan (Fermi National Accelerator Lab)
  • Dongliang Wang (Institute of Electrical Engineering, CAS)

Presentation materials

There are no materials yet.

  1. 471. M1Or3F-01: Developing Advanced Nb3Sn conductors in Hyper Tech
    Dr Xuan Peng
    10/07/2023, 16:15
    Contributed Oral

    In this paper we will report the recent progress of making ternary APC (Artificial Pinning Center) Nb3Sn conductor using internal oxidation technique in Hyper Tech. Our ternary APC Nb3Sn conductors with Ta and either Zr or Hf doping demonstrated substantial grain refinement and significantly increased Jc,nonCu, while retaining the high Bc2 values of the best ternary Nb3Sn conductors. The...

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  2. 372. M1Or3F-02: Persistent-current magnetization of APC Nb3Sn superconducting strands
    Dr Fang Wan (Fermi National Accelerator Lab)
    10/07/2023, 16:30
    Contributed Oral

    The goal of building economic 16 T accelerator magnets requires Nb3Sn conductors with Jc much higher than state of the art. Thus, a lot of efforts in the Nb3Sn community have been focused on improving Jc (while keeping RRR and effective subelement size deff in the acceptable range). However, a very important factor that is also critical for this application but has been overlooked is the...

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  3. 450. M1Or3F-03: Nucleation and Growth of Oxide Nanoparticles in APC Nb3Sn
    Jacob Rochester
    10/07/2023, 16:45
    Contributed Oral

    APC Nb3Sn wires are made using an internal oxidation process to create ZrO2 or HfO2 nanoparticles during diffusional growth of Nb3Sn. These particles introduce a second pinning mechanism, as well as refine the grain size, strengthening the grain-boundary pinning above that in non-oxidized Nb3Sn. The two mechanisms taken together increase...

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  4. 446. M1Or3F-04: Nb3Sn conductors with high specific heat
    Xingchen Xu (Fermi National Accelerator Lab)
    10/07/2023, 17:00
    Contributed Oral

    It is very desirable to reduce the long training for Nb3Sn magnets. Increasing the specific heat (Cp) of Nb3Sn conductors can significantly increase their energy margin, and thus may be a promising approach to reduce the magnet training. We developed a design to add high-Cp materials into Nb3Sn strands in 2017, which is compatible with standard Nb3Sn wire production process, and this design...

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  5. 451. M1Or3F-05: Filament area variation in Bi-2212 round wire and its impact on critical current
    Eric Hellstrom (Applied Superconductivity Center - National High Magnetic Field Laboratory)
    10/07/2023, 17:15
    Contributed Oral

    Currently, the record critical current density (Jc) achieved in Bi-2212 short samples is around 9600 A/mm¬2 at 5 T in 4.2 K. However, even this very high Jc is still less than 1% of the depairing current density (Jd) of Bi-2212. The 1% Jc/Jd value in Bi-2212 suggests that the long-range filament connectivity in Bi-2212 is rather poor. There are multiple intrinsic and extrinsic factors that can...

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  6. 275. M1Or3F-06: High Ic Superconducting Joints Connecting Reinforced Bi2223 Tapes
    Prof. Jun-ichi Shimoyama (Aoyama Gakuin University)
    10/07/2023, 17:30
    Contributed Oral

    Superconducting magnets equipped with the persistent current circuit have been extensively used for NMR and MRI systems with high resolution cooled by liquid helium. In those systems, superconducting joints with very low joint resistance are essential for realization of the closed circuit. However, practical superconducting joints connecting HTS tapes have never been developed mainly due to...

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  7. 702. M1Or3F-07: Withdrawn
    10/07/2023, 17:45
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