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CEC-ICMC 2019 - Abstracts, Timetable and Presentations

21–25 Jul 2019
Connecticut Convention Center, Level 6
US/Eastern timezone

Conference Management

Session

M2Po2C - Nb Properties and A15 Conductor

M2Po2C
23 Jul 2019, 13:30
Level 6, Cryo Expo Exhibit Hall

Level 6, Cryo Expo Exhibit Hall

Conveners

M2Po2C - Nb Properties and A15 Conductor

  • Xingchen Xu (Fermi National Accelerator Lab)
  • Chiara Tarantini (FSU)

Presentation materials

There are no materials yet.

  1. 991. M2Po2C-01 [37]: Pressure-induced critical current reduction in impregnated Nb3Sn Rutherford cables for use in future accelerator magnets
    Herman Ten Kate (CERN)
    23/07/2019, 13:30
    Poster Presentation

    We analyze the measured critical current reduction in Nb3Sn Rutherford cables under magnet-relevant transverse pressure levels in terms of the filament strain inside their strands. A mechanical 2D model of cables’ cross-section is developed to translate the stress that is applied to the surface of the impregnated cables into a strain distribution on the surface of its strands. The resulting...

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  2. 1039. M2Po2C-02 [38]: Improvement of stability of commercial Nb3Sn RRP wires by increasing specific heat
    Xingchen Xu (Fermi National Accelerator Lab)
    23/07/2019, 13:30
    Poster Presentation

    Introducing materials with high specific heat (C) to Nb3Sn composite wires is a promising technique to suppress the intrinsic instability in high-Jc wires and also improve their stability with respect to external perturbations, which might help to reduce the long training of Nb3Sn magnets. Experiments on prototype wires have demonstrated its capability to improve conductor stability in...

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  3. 988. M2Po2C-03 [39]: Trial Manufactures of Jelly-Rolled Nb/Al Single Wire with Very Small Diameter below 50 microns
    Dr Akihiro Kikuchi (National Institute for Materials Science)
    23/07/2019, 13:30
    Poster Presentation

    In general, practical metallic superconducting wires, such as NbTi, Nb3Sn and V3Ga, have a fine multifilamentary configuration. Its predominant reason would be pointed as the reduction of electromagnetic losses, the improvement of intrinsic and thermal stabilities, and the reduction of mechanical strain. In particular on the A15 compounds, the promotion of the chemical reaction through the...

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  4. 873. M2Po2C-04 [40]: Characterization and Image Analysis to Further the Development of Tube Type Nb3Sn Conductors
    Mr Jacob Rochester (The Ohio State University)
    23/07/2019, 13:30
    Poster Presentation

    Tube type Nb3Sn wires are high performance conductors that typically reach a Jc of 2000-2500 A/mm2 at 12 T and 4.2 K (1000-1250 A/mm2 at 15 T). The wires have performance similar to that of PIT conductors, but are simpler, cheaper, and can be drawn down to finer filament sizes. The conductor consists of a number of subelements, each consisting of a...

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  5. 935. M2Po2C-05 [41]: RRR Estimation of Niobium using inflection point on the frequency response of a planar inductive sensor
    Nagendra H.N. (INDIAN INSTITUTE OF SCIENCE)
    23/07/2019, 13:30
    Poster Presentation

    A clear indicator of purity of niobium (Nb) used for fabricating Superconducting Radio Frequency (SRF) cavities is the Residual Resistivity Ratio (RRR) of the bulk Nb. Usual methods of determining the RRR is by Four-probe resistance measurement techniques. This process is destructive in nature and provides an average value of the RRR of the sample that is being used. It has already been shown...

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  6. 816. M2Po2C-06 [42]: RRR Measurements and Tensile Tests of High Purity Ingot Niobium
    Zijia Zhao (Tufts University)
    23/07/2019, 13:30
    Poster Presentation

    High Purity large grain niobium ingots produced by CBMM, the global leading producer of niobium, have shown advantages in manufacturing superconducting radio frequency (SRF) cavities for particle accelerators in regard to less expensive fabrication and treatment procedures with comparable or better performance. For this application, the homogeneity of the ingot needs to be ensured. In this...

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