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Harmonization - Material and component reference

Explore the challenges and benefits of harmonizing material and component specifications in the production of semi-finished products. Learn about the influence of unusable and usable standards, the Nb RF SC landscape, and the impact of the tendering process.

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Harmonization - Material and component reference

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  1. Harmonization - Material and component reference Hanau, 10.04.2017, Bernd Spaniol

  2. Harmonization - Material and component reference • The view from a producer of semi finished materials and components • Materials: • - Nb RRR for RF SC cavities - Nb for Nb3Sn SC cables • RF SC Landscape: • The labyrinth of Specifications: • The influence of unusable standards: • - how wrong HARMONIZATION is opening the way to diversification • The influence of usable standards: • - less discussions, less interpretation, a signpost • The influence of the tendering process: • The AMICI conference, more than giving proposals: Presentation title | Author | Department

  3. Harmonization - Material and component reference • Our view point • - producer of semi finished products and components • - quite early in the value chain • - the end use is done at the customer of the customer of the… • - communication interfaces Presentation title | Author | Department

  4. Harmonization - Material and component reference • Products: Presentation title | Author | Department

  5. Harmonization - Material and component reference • The Nb RF SC Landscape: • - a quite small number of players • - best prediction for HARMONIZATION and Standardization ~ 5 ~ 10 Nb RRR material Producer ~ 50 RF SC manufaturer Industry High Energy Physik Institutes Presentation title | Author | Department

  6. Harmonization - Material and component reference • The labyrinth of Specifications: • - Nb RRR • - State of the art • every Institute is using its own material specification • even for the same project, different material specifications are created • e.q. ESS / medium beta INFN / high beta ASTeC • - Variations • chemistry • tests to be done • sample scope Presentation title | Author | Department

  7. Harmonization - Material and component reference • The labyrinth of Specifications: • Specification request vs natural limits of the physics • High purity to get high RRR values vs fine grains after recrystallization • RRR 300 + is predicting a minimum of Interstitials and metallic impurities • that minimum of Interstitials and metallic impurities can not act as growing-cells for new grains during the recrystallization • We have to do a bad compromise of not fully annealing and degradation of the RRR to find the “working window” to meet the specifications • High purity to get high RRR values vs Yield strength of higher 50 MPa • RRR 300 + is predicting a minimum of Interstitials and metallic impurities • There are no impurities remaining to block the grain boundaries • LG sheets have a Yield strength of 45 to 50 Mpa and the cavities out of that are working fantastic Presentation title | Author | Department

  8. Harmonization - Material and component reference • The influence of unusable standards: • - how wrong HARMONIZATION is opening the way to diversification • - O < 40 µg/g - C < 30 µg/g - N < 30 µg/g - H < 5 µg/g  RRR 25 Presentation title | Author | Department

  9. Harmonization - Material and component reference • The influence of usable standards: • - less discussions, less interpretation, a signpost Presentation title | Author | Department

  10. Harmonization - Material and component reference • The influence of usable standards: • - less discussions, less interpretation, a signpost • The IEC Standard 61788-23 • Will describe an international Standard on measurement of the RRR value of Nb superconductors • - measurement at 9,2 K • - measurement U vs time • - measurement with external magnetic field • - extrapolation to 4,2 K Presentation title | Author | Department

  11. Harmonization - Material and component reference Presentation title | Author | Department

  12. Harmonization - Material and component reference • The influence of the tendering process: • - national law is applicable • - only a reduced influence on the specifications during the tendering process • - example: ESS, high beta ASTeC • - at the end the tendering was stopped and postponed Presentation title | Author | Department

  13. Harmonization - Material and component reference • The AMICI conference, more than giving proposals: • - Questions: • how are the results of the AMICI conference being implemented in the future ? • shall there be a HARMONIZATION based on international Standards ? • IEC, CEN, CENELEC, ….. ? • - Motivation: • let´s work together to end up • with much more than a proposal Presentation title | Author | Department

  14. Harmonization - Material and component reference • Thank You ! Presentation title | Author | Department

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