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6th SRF Materials Workshop

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Description
National High Magnetic Field Laboratory, Tallahassee, FL The 10-minute presentations should, as a guideline, be 5 slides of content, i.e. exclusive of title, acknowledgments, conclusions.
Moderators
  • Thursday, 18 February
    • 08:00
      Continental Breakfast
    • 1
      Opening remarks and workshop guidelines
      Speaker: Cooley (FNAL)
    • Session 1: Recent cavity results and drivers
      • 2
        Materials issues from FNAL/ANL 1.3 GHz processing experience and consideration of Project X at 650 MHz
        Speaker: Cooley (FNAL)
        Slides
      • 3
        Can we predict performance of 650 MHz cavities?
        Speaker: Sergatskov (FNAL)
        Slides
      • 4
        Heat treatment and passivation of SRF Nb cavities
        Speaker: Ciovati (JLab)
        Slides
      • 5
        Laser heating investigation of SRF cavities
        Speaker: Ciovati (JLab)
        Slides
      • 6
        Migration of quench location
        Speaker: Sergatskov (FNAL)
        Slides
      • 7
        Locating Quenches With Second Sound
        Speaker: Liepe (Cornell)
        Slides
      • 8
        Discussion
    • 10:10
      Break
    • Session 2: Recent coupon results and drivers
      • 9
        Search for pit formation mechanisms – weld coupon electropolishing
        Speaker: Cooley (FNAL)
        Slides
      • 10
        Recent developments in understanding the mild baking effect
        Speaker: Romanenko (FNAL)
        Slides
      • 11
        Effect of Low T baking on field emission and Nb surface oxide layer structure
        Speaker: Wu (JLab)
        Slides
      • 12
        Annealing Temperature and Thermal Conductivity of Superconducting Niobium
        Speaker: Wright (MSU)
        Slides
      • 13
        Further evidence for localized magnetic moments in the surface oxides of air-exposed niobium
        Speaker: Zasadzinski (IIT)
        Slides
      • 14
        Fundamental Surface Chemistry Studies of Niobium Oxidation
        Speaker: Nakajima (UChicago)
        Slides
      • 15
        Evidence for suppressed superconductivity across buffer chemically polished grain boundaries of SRF quality niobium
        Speaker: Sung (FSU)
        Slides
      • 16
        Discussion
    • 12:20
      Lunch
    • Session 3: Ideal limits to SRF
      • 17
        Effects of materials defects on the physics of SRF
        Speaker: Gurevich (FSU)
        Slides
      • 18
        Superheating field of niobium
        Speaker: Liepe (Cornell)
        Slides
      • 19
        Vortex dissipation as an origin of Q-slope and quench
        Speaker: Dzyuba (FNAL)
        Slides
      • 20
        Discussion
    • Session 4: Surface processing — bulk removal
      • 21
        Basic mechanisms of electropolishing
        Speaker: Reece (for Tian, JLab)
        Slides
      • 22
        Development of computational algorithms to predict surface morphology and evolution during electropolishing
        Speaker: Brankovic (Houston)
        Slides
    • 15:30
      Break
    • Session 4: Surface processing — bulk removal (cont.)
      • 23
        Integrated Cavity Processing at JLab
        Speaker: Reece (JLab)
        Slides
      • 24
        EP temperature control strategies
        Speaker: Reece (JLab)
        Slides
      • 25
        FNAL Integrated Cavity Processing Apparatus for single-cell R&D
        Speaker: Cooper (FNAL)
        Slides
      • 26
        Industrialization of vertical electropolishing
        Speaker: Conway (Cornell)
        Slides
      • 27
        VEP at JLab
        Speaker: Reece (JLab)
        Slides
      • 28
        The need for tumbling and recent tumbling results at FNAL
        Speaker: Cooper (FNAL)
        Slides
      • 29
        Fluoride-free electropolishing of niobium cavities for next-generation particle accelerators
        Speaker: Zhao (Va. Tech)
        Slides
      • 30
        Processing Effects and Use of Electrochemical Abrasive Jet Polishing for Nb-SRF Cavities
        Speaker: Muftu (Northeastern)
        Slides
      • 31
        Faradayic electropolishing
        Speaker: Inman (Faraday Technology)
        Slides
      • 32
        Discussion
  • Friday, 19 February
    • 08:00
      Continental Breakfast
    • 33
      Opening remarks
      Speaker: Cooley (FNAL)
    • Session 5: Final processing, coating, repair
      • 34
        Light vs. heavy electropolishing
        Speaker: Reece (JLab)
        Slides
      • 35
        Restoration of maximum gradient by laser re-melting a cavity pit
        Speaker: Ge (FNAL)
        Slides
      • 36
        Capabilities and design philosophy of a dual resolution inspection and repair system for SRF cavities
        Speaker: Bearden (MicroDynamics)
        Slides
      • 37
        Surface Treatment of Niobium SRF Cavity by Plasma Etching
        Speaker: Upadhyay (ODU)
        Slides
      • 38
        Progress in niobium coatings by PE-ALD
        Speaker: Prolier (ANL)
        Slides
      • 39
        Discussion
    • 09:50
      Break
    • Session 6: Q(E) and Rs measurements
      • 40
        TE Cavity work
        Speaker: Liepe (Cornell)
        Slides
      • 41
        Current Status of Dielectric Test Cavity and Wafer Test Cavity
        Speaker: Pogue (TAMU)
        Slides
      • 42
        RF Critical Magnetic Field Measurements of Nb/(Insulator)/MgB2 Systems
        Speaker: Tajima (LANL)
        Slides
      • 43
        Local measurements of the electron mean free path
        Speaker: Phillips (JLab)
        Slides
      • 44
        Progress in near-field microwave microscopy of superconducting materials
        Speaker: Anlage (Maryland)
        Slides
      • 45
        Discussion
    • Session 7: Forming and Welding
      • 46
        Plans for improving stockpile and cost of fine-grained niobium and chipless forming of ingot niobium into cavity subassemblies
        Speaker: Grimm (Niowave)
        Slides
      • 47
        Direct and indirect process feedbacks for the fabrication of 1.3 GHz elliptical SRF resonators to improve production yields
        Speaker: Edinger (Pavac)
        Slides
      • 48
        Dislocations in niobium
        Speaker: Baars (MSU)
        Slides
      • 49
        Homogenization of Nb microstructures
        Speaker: Balachandran (TAMU)
        Slides
    • 12:10
      Lunch
    • Session 7: Forming and Welding (cont.)
      • 50
        Cryotesting of niobium polycrystals
        Speaker: Bieler (MSU)
        Slides
      • 51
        Fabrication of ILC cavities from axisymmetric RRR Nb tubes
        Speaker: Crooks (Black Laboratories)
        Slides
      • 52
        Discussion
    • Session 8: Alternate Processes
      • 53
        Update on MgB2 deposition for SRF cavities
        Speaker: Xi (Temple)
        Slides
      • 54
        Coupon and cavity studies of SRF thin films produced by energetic condensation
        Speaker: Krishnan (Alameda Appl. Sci.)
        Slides
      • 55
        Discussion
    • 14:30
      Break
    • Tours
    • 17:00
      Reception
    • 18:00
      Dinner
  • Saturday, 20 February
    • 08:00
      Continental Breakfast
    • 56
      Opening remarks
      Speaker: Cooley (FNAL)
    • 57
      Session 1 Summary
      What are the primary materials R&D drivers from cavities and programs?
      Slides
    • 58
      Session 2 Summary
      What are small-scale experiments telling us about how to proceed (or not proceed)?
      Slides
    • 59
      Session 3 Summary
      What is the ideal surface? What ideas or models are most useful and immediately applicable?
      Slides
    • 60
      Session 4 Summary
      Can we obtain the target surface reliably and reproducibly? What is optimum, and what needs improvement?
      Slides
    • 10:00
      Break
    • 61
      Session 5 Summary
      What are the important differences in the final surface structures in relation to the observed properties? What changes need to be made, and what new things should be tried?
      Slides
    • 62
      Session 6 Summary
      What techniques are useful and immediately applicable? Can property measurements bridge between coupons and cavities?
      Slides
    • 63
      Session 7 Summary
      Do forming and welding produce downstream difficulties? What needs to be changes?
      Slides
    • 64
      Session 8 Summary
      Can coating technologies provide a meaningful impact and in a reasonable time frame?
    • 65
      Final discussion
    • 12:00
      Box Lunch
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