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    3rd TTC Thin Film Working Group Meeting

    → Europe/Zurich
    CERN

    CERN
    Alban Rene Maurice Sublet (CERN), Anne-Marie Valente-Feliciano (Jefferson Lab), Sarah Katharina Aull (CERN)
    Description

    Following the concept of the TTC high Q meetings, the TTC thin film working group is a forum to present and discuss new results, ideas, technical progress and challenges related to SRF thin films and new materials.

    The content of this meetings is considered unpublished and preliminary and is not intended for external reference or distrubution.

     

    Please write an email to srf-thinfilm-wg@cern.ch to get onto the agenda and/or mailinglist.

      • 16:00 → 16:15
        Synergy between Tunneling spectroscopy, surface characterization tools and numerical simulations as a predictive approach for SRF cavities: Case Study of Nb3Sn 15m
        Speaker: Dr Thomas Proslier (CEA Saclay)
      • 16:20 → 16:35
        INVESTIGATION OF NUCLEATION STEP IN THE TWO STEP DIFFUSION COATING OF Nb3Sn ON Nb 15m

        Nb3Sn is a superconducting material with a critical temperature and predicted superheating field nearly twice that of niobium. Accordingly, it promises higher operating temperature and accelerating gradient of SRF accelerator cavities, resulting in significant cost reduction. Nb3Sn cavities are currently prepared by depositing a few micron thick layer of Nb3Sn inside the niobium cavity formed by diffusion coating. This technique, first developed in University of Wuppertal in 1970’s involves two¬ steps: nucleation (with SnCl2) followed by deposition (with Sn). Nucleation is considered to be an important step for the quality of final coatings, but a clear relevance has not been established yet. To gain more understanding of nucleation and its effect on the subsequent coating, we investigated the activated surface using different material characterization approaches. The nucleation step was found to produce a low (< 10%) coverage of tin particles, as determined by SEM/EDS, while XPS and SAM discovered more coverage of tin film.

        Speaker: Uttar Pusaidini (Jefferson Lab)
        TTC Thin film 113016.pdf
      • 16:40 → 16:55
        Update on MgB2 15m
        Speaker: Wenura Withanage (Temple University)
        CERN_Web_conference.pptx