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Properties of Superconducting Nb3Sn Layers Used in RF Cavities

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Advances in Cryogenic Engineering

Part of the book series: Advances in Cryogenic Engineering ((ACRE,volume 24))

Abstract

In recent years thin Nb3Sn coatings have shown quite promising results for rf applications in the superconducting state [1–6]. These layers were grown in carefully prepared pure niobium rf cavities by heating them in a saturated tin vapor at a temperature of 1050°C for several hours. This procedure results in coatings several microns thick, consisting of Nb3Sn single crystal columns about 1 µm in diameter [3–5]

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Abbreviations

B c :

thermodynamic critical field

B c2 :

upper critical field

B DC :

stationary magnetic field

B crit :

rf critical magnetic field

E p :

peak electric field at the cavity surface

ƒ:

frequency

F p :

volume pinning force

j c :

critical current density

k:

Boltzmann constant

l:

mean free path

R(T):

measured surface resistance

R BCS :

surface resistance, as described by the BCS theory

R res :

residual surface resistance

T c :

transition temperature

2Δ:

energy gap

Δb :

screening field

λl :

London penetration depth

ξgl :

Ginzburg-Landau coherence length

ξ0 :

BCS coherence length

References

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Author information

Authors and Affiliations

  1. Kernforschungszentrum und Universität, Karlsruhe, Germany

    P. Kneisel, H. Küpfer, O. Stoltz & J. Halbritter

Authors
  1. P. Kneisel
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  2. H. Küpfer
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  3. O. Stoltz
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  4. J. Halbritter
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Editor information

Editors and Affiliations

  1. Engineering Research Center, University of Colorado, Boulder, Colorado, USA

    K. D. Timmerhaus

  2. NBS Institute for Basic Standards, Boulder, Colorado, USA

    R. P. Reed  & A. F. Clark  & 

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© 1978 Springer Science+Business Media New York

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Kneisel, P., Küpfer, H., Stoltz, O., Halbritter, J. (1978). Properties of Superconducting Nb3Sn Layers Used in RF Cavities. In: Timmerhaus, K.D., Reed, R.P., Clark, A.F. (eds) Advances in Cryogenic Engineering. Advances in Cryogenic Engineering, vol 24. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-9853-0_49

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  • DOI: https://doi.org/10.1007/978-1-4613-9853-0_49

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4613-9855-4

  • Online ISBN: 978-1-4613-9853-0

  • eBook Packages: Springer Book Archive

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