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High-quality factors for a sapphire-loaded superconducting cavity resonator

High-quality factors for a sapphire-loaded superconducting cavity resonator

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© The Institution of Electrical Engineers
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Measurements were made of the electrical quality factor of a new type of sapphire-loaded superconducting cavity resonator. We report a Q-factor of 4.2 × 109 at 2.2 K and compare the temperature dependence of the Q to that of other superconductor-coated sapphire resonators.

Inspec keywords: cavity resonators; superconducting devices; Q-factor

Other keywords: 2.2 K; Al2O3 loaded superconductor; microwave resonators; temperature dependence; sapphire-loaded superconducting cavity resonator; Q-factor

Subjects: Waveguide and microwave transmission line components; Other superconducting material applications and devices

References

    1. 1)
      • S. Thakoor , D.M. Strayer , G.J. Dick , J.E. Mercereau . A lead on sapphire superconducting cavity of superior quality. J. Appl. Phys.
    2. 2)
      • V.B. Braginsky , V.I. Panov . Superconducting resonators on sapphire. IEEE Trans.
    3. 3)
      • V.B. Braginsky , V.P. Mitrofanov , V.I. Panov . (1985) , Systems with small dissipation.
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