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7th SRF Materials Workshop

US/Eastern
CEBAF Center F113 (Jefferson Lab)

CEBAF Center F113

Jefferson Lab

    • 8:00 AM 8:30 AM
      Registration and Continental Breakfast 30m CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      Nametags, paperwork, and visitor WPA2 key

    • 8:30 AM 8:40 AM
      Welcome and logistics CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      • 8:30 AM
        Welcome - Andrew Hutton, Associate Director for Accelerator Operations, Research, and Development 5m
      • 8:35 AM
        Meeting logistics - Charlie Reece, local organizing chair 5m
        Speaker: Reece
        Slides
    • 8:40 AM 10:00 AM
      Session 1 - What do end-use applications need from materials R&D? CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      • 8:40 AM
        Overview of cavity requirements for high intensity and high energy 15m CEBAF Center F113

        CEBAF Center F113

        Jefferson Lab

        Speaker: C. Ginsburg (Fermilab)
        Slides
      • 8:55 AM
        FRIB SRF Cavities 15m CEBAF Center F113

        CEBAF Center F113

        Jefferson Lab

        Speaker: C. Compton (MSU/FRIB)
        Slides
      • 9:10 AM
        Needs for SRF cavities for the Next Generation Light Source 15m CEBAF Center F113

        CEBAF Center F113

        Jefferson Lab

        Via WebEx
        Speaker: John Corlett (LBL)
        Slides
      • 9:25 AM
        Accelerator R&D News 15m CEBAF Center F113

        CEBAF Center F113

        Jefferson Lab

        Speaker: Michael Zisman (DOE detailee)
        Slides
      • 9:40 AM
        Discussion - Overview topics 20m CEBAF Center F113

        CEBAF Center F113

        Jefferson Lab

    • 10:00 AM 10:20 AM
      Break 20m CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

    • 10:20 AM 12:30 PM
      Session 2 - Theory and basic measurements CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      • 10:20 AM
        Tuning the superheating and RF break-down fields of type-II superconductors by impurities 15m
        Speaker: Fareh Lin (ODU)
        Slides
      • 10:35 AM
        Calculations of hotspots caused by trapped vortices 15m
        Speaker: A. Gurevich (ODU)
        Slides
      • 10:50 AM
        DFT analyses of structures that limit SRF cavity performance: I. interactions between Nb, H, and native defects 10m
        Speaker: D. Ford (Fermilab / NWU)
        Slides
      • 11:00 AM
        DFT analyses of structures that limit SRF cavity performance: II. interactions with other interstitials, chiefly oxygen 10m
        Speaker: D. Ford (Fermilab / NWU)
      • 11:10 AM
        The Closing Quasiparticle Spectral Gap and its Implications for Nb3Sn 15m
        Speaker: Sam Posen (Cornell)
        Slides
      • 11:25 AM
        Quench and trapped flux studies at Cornell 15m
        Speaker: Daniel Gonnella (Cornell)
        Slides
      • 11:40 AM
        Variation of Surface Superconductivity with cold-work deformations on Superconducting RF quality Niobium 15m
        Speaker: Zuhawn Sung (NHMFL / FSU)
        Slides
      • 11:55 AM
        Laser heating and laser scanning microscopy of SRF cavities 15m
        Speaker: Gigi Ciovati (JLab)
        Slides
      • 12:10 PM
        Discussion - Theory and basic measurements 20m
    • 12:30 PM 1:30 PM
      Lunch Break 1h CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      Food service is available at the nearby Quark Cafe

    • 1:30 PM 4:30 PM
      Session 3 - Raw materials CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      • 1:30 PM
        Raw materials specifications and material batch history 15m
        Speaker: Lance Cooley (FNAL)
        Slides
      • 1:45 PM
        Niobium RRR and Ta specifications for SRF cavities: a critical review 15m
        Speaker: Gigi Ciovati (JLab)
        Slides
      • 2:00 PM
        Examination of surface damage layer on SRF cavities using EBSD 15m
        Speaker: Di Kang (MSU)
        Slides
      • 2:15 PM
        Using resistivity measurements to track uptake of hydrogen as a function of material working 15m
        Speaker: Alexander Dzyuba (FNAL)
        Slides
      • 2:30 PM
        Recovery of Phonon Peak in Annealed Niobium as a Function of Initial Strain and Hydrogen Concentration 15m
        Speaker: Saravan Chandrasekaran (MSU)
        Slides
      • 2:45 PM
        Break 15m
      • 3:00 PM
        Requirements for crystal growth of single crystal SRF niobium 15m
        Speaker: John Wallace (Casting Analysis Corp)
        Slides
      • 3:15 PM
        In-situ tensile tests on single crystal specimens with different orientations 15m
        Speaker: Di Kang (MSU)
        Slides
      • 3:30 PM
        Refining Crystal Plasticity Finite Element Model for Deformation of Single Crystal Niobium 15m
        Speakers: Aboozar Mapar, Thomas Bieler (MSU)
        Slides
      • 3:45 PM
        Ingot niobium - the Choice Materials for Future SRF Cavity Applications? 15m
        Speaker: Peter Kneisel (JLab)
        Slides
      • 4:00 PM
        Discussion - Raw materials 30m
    • 4:30 PM 5:45 PM
      Session 4a - Processing advances CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      Convener: Charlie Reece (JLab)
      • 4:30 PM
        High Q0 studies at FNAL 15m
        Speaker: Anna Grassellino (FNAL)
      • 4:45 PM
        High Q cavities at Cornell 15m
        Speaker: Nicholas Valles (Cornell)
        Slides
      • 5:00 PM
        Depth profiling by HF rinsing and an increase in Q0 15m
        Speaker: Alexander Romanenko (FNAL)
        Slides
      • 5:15 PM
        Mechanisms of niobium electropolishing for SRF cavities 15m
        Speakers: Ashwini Chandra (Ohio State), Michael Sumption
        Slides
      • 5:30 PM
        High temperature heat treatment to raise the quality factor of large grain niobium cavities 15m
        Speaker: Pashupati Dhakal (JLab)
        Slides
    • 5:45 PM 6:15 PM
      Networking reception 30m CEBAF Center Attrium

      CEBAF Center Attrium

      Jefferson Lab

    • 6:15 PM 8:00 PM
      Browse and Eat Reception 1h 45m TEDF - New SRF lab wing

      TEDF - New SRF lab wing

      Jefferson Lab

      Heavy hors d'oeuvres with browsing tour of the new JLab SRF facilities - 10 min walk from here.

    • 8:00 AM 8:30 AM
      Continental breakfast 30m CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

    • 8:30 AM 10:30 AM
      Session 4b - Processing advances (cont.) CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      Convener: Charles Reece (JLab)
      • 8:45 AM
        Evaluations of mechanical polishing for "baseline" and "acid free" processing 15m
        Speaker: Charlie Cooper (FNAL)
      • 9:00 AM
        Direct observation of hydrides in cavity-grade niobium 15m
        Speaker: Alexander Romanenko (FNAL)
        Slides
      • 9:15 AM
        Genesis of topography by buffered chemical polishing of niobium 15m
        Speaker: Liang Zhao (W&M)
        Slides
      • 9:30 AM
        Recent progress with VEP at Cornell 15m
        Speaker: Fumio Furuta (Cornell)
        Slides
      • 9:45 AM
        Development of Plasma Processing Technologies for SRF Cavities 15m
        Speaker: Janardan Upadhyay (ODU)
        Slides
      • 10:00 AM
        Discussion - Processing progress 30m
    • 10:30 AM 11:00 AM
      Break & Workshop group photo 30m CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

    • 11:00 AM 12:30 PM
      Session 5a - Nb Characterization CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      Conveners: Alexander Romanenko (FNAL), Peter Lee (FSU)
      • 11:00 AM
        SIMS Characterization of Impurity Elements in Nb: The Effect of Heat Treatments 15m
        Speaker: Prateek Maheshwari (NCSU)
        Slides
      • 11:15 AM
        Near-Field Nonlinear Microwave Microscopy of Bulk Nb Surfaces 15m
        Speaker: Steven Anlage (U Maryland)
        Slides
      • 11:30 AM
        Preliminary TEM results on high field hot/cold spot cutouts 15m
        Speaker: Yulia Trenikhina (IIT/FNAL)
        Slides
      • 11:45 AM
        Signatures of RF hot spots by superconducting tunnel-junction and Raman spectroscopies 15m
        Speaker: John Zasadzinski (IIT)
      • 12:00 PM
        Low-field Quench, HAZ Pits and Strain in a Prototype Cavity for the European XFEL 15m
        Speaker: Roy Crooks (Black Labs Inc.)
        Slides
      • 12:15 PM
        CYCLOPS - CavitY CaLibrated Optical Profilometry System 15m
        Internal interferometric profilometry
        Speaker: John Bearden (MicroDynamics, Inc)
        Slides
    • 12:30 PM 1:30 PM
      Lunch break 1h CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      Food service is available at the nearby Quark Cafe

    • 1:30 PM 3:00 PM
      Session 5b - Nb Characterization (cont.) CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      Conveners: Alexander Romanenko (FNAL), Peter Lee (FSU)
      • 1:30 PM
        LEAP investigations of hydrogen precipitates in SRF niobium 15m
        Speaker: David Seidman (Northwestern)
        Slides
      • 1:45 PM
        In-situ study of Nb oxide and hydride for SRF cavity applications using electron energy loss spectroscopy 15m
        Speaker: Runzhe Tao (UIC)
        Slides
      • 2:00 PM
        Scanning Tunneling Microscopy Studies of Single-Crystal Niobium Oxidation 15m
        Speaker: Natalie Kautz (U Chicago)
        Slides
      • 2:15 PM
        Atomic-scale characterization of niobium for SRF cavities using ultraviolet laser-assisted local- electrode atom-probe tomography and aberration-corrected transmission electron microscopy 15m
        Speaker: YoonJun Kim (Northwestern)
        Slides
      • 2:30 PM
        Discussion - Nb characterization 30m
    • 3:00 PM 4:15 PM
      Session 6 - Seamless forming CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      Convener: Chris Compton (MSU)
      • 3:00 PM
        Spin-forming of seamless cavities 20m
        Speaker: Enzo Palmieri (INFN/Legnaro, U Padua)
        Slides
      • 3:20 PM
        Niobium tube specification and procurement for seamless forming 10m
        Speaker: Lance Cooley (FNAL)
        Slides
      • 3:30 PM
        Bulge testing of copper and niobium 15m
        Speaker: Ted Collings (Ohio State)
        Slides
      • 3:45 PM
        Fabrication of Seamless Nb Tube for SRF Cavities 15m
        Speaker: K. T. Hartwig (TAMU)
        Slides
      • 4:00 PM
        Discussion - Seamless forming 15m
    • 4:15 PM 4:30 PM
      Break 15m CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

    • 4:30 PM 6:00 PM
      Wrap-up discussions and pathways forward CEBAF Center F113

      CEBAF Center F113

      Jefferson Lab

      Convener: Lance Cooley (FNAL)
      slides