Influence of the Quasiparticle Lifetime on the Surface Impedance of Superconducting Nb3Sn

Blaschke, R.

doi:10.1007/978-1-4684-1086-0_54

Cited by 7 publications

(3 citation statements)

References 6 publications

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“…Many aspects of the physics of Nb 3 Sn have been already studied. For what concerns the high frequency regime, Nb 3 Sn surface impedance Z measurements were performed in the 1-10 GHz range and allowed to observe deviations of the measured Z from the BCS theory and a particularly large gap ∆ 0 /k B T = 2.15 (being k B and T the Boltzman constant and the temperature, respectively) [23][24][25]. The higher frequency behavior (at 87 GHz) was explored in [26] confirming the large superconductive gap in Nb 3 Sn, 1.8 < ∆ 0 /k B T < 2.2.…”

Section: Introductionmentioning

confidence: 99%

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb₃Sn

Alimenti

Pompeo

Torokhtii

et al. 2020

Supercond. Sci. Technol.

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The high frequency vortex motion in Nb3Sn was analyzed in this work up to 12 T. We used a dielectric loaded resonator tuned at 15 GHz to evaluate the surface impedance Z of a Nb3Sn bulk sample (24.8 at.%Sn). From the field induced variation of Z, the high frequency vortex parameters (the pinning constant k p , the depinning frequency ν p and the flux flow resistivity ρ ff ) were obtained over a large temperature and field range; their field and temperature dependencies were analyzed. Comparison with other superconducting materials shows that high frequency applications in strong magnetic fields are also feasible with Nb3Sn. In the present work, we report the first measurements about the microwave response in Nb3Sn in strong magnetic fields.

show abstract

Section: Introductionmentioning

confidence: 99%

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb₃Sn

Alimenti

Pompeo

Torokhtii

et al. 2020

Supercond. Sci. Technol.

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show abstract

“…This has been explained by a correction term. It takes into account the consequences of an anisotropy of the crystal lattice (dot-dashed curve) [42].…”

Section: Surface Resistancementioning

confidence: 99%

Superconducting cavities for accelerators

Proch

1998

Rep. Prog. Phys.

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Superconducting cavities have been in operation in accelerators for 25 years. In the last decade many installations in storage rings and linacs have been completed. Meanwhile, nearly 1 km of active cavity length is in operation in accelerators. Large-scale applications of superconducting radiofrequency systems are planned for future e + e − linear colliders and proton linacs. Superconducting cavities have been proved to operate at higher gradient, lower AC power demand and more favourable beam dynamics conditions than comparable normal conducting resonators. The performance of the best single-cell cavities comes close to the intrinsic limitation of the superconducting material. Complete multicell structures with all auxiliaries (couplers, tuner, etc) lag behind in performance because of their complexity. In this paper, an overview of accelerators with superconducting cavities is given. Limitations of superconducting performance are described and research and development efforts towards understanding and curing these effects are discussed in detail. Fundamentals of superconductivity and radiofrequency cavity design are briefly explained.

show abstract

“…Many aspects of the physics of Nb 3 Sn have been already studied. For what concerns the high frequency regime, Nb 3 Sn surface impedance Z measurements were performed in the range 1-10 GHz and allowed to observe deviations of the measured Z from the BCS theory and a particularly large gap ∆ 0 /k B T = 2.15, with the Boltzman constant k B and the temperature T [23][24][25]. The higher frequency behavior (at 87 GHz) was explored in [26] confirming the large superconductive gap in Nb 3 Sn, 1.8 < ∆ 0 /k B T < 2.2.…”

Section: Introductionmentioning

confidence: 99%

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb$_3$Sn

Alimenti,

Pompeo,

Torokhtii

et al. 2020

Preprint

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The high frequency vortex motion in Nb 3 Sn was analyzed in this work up to 12 T. We used a dielectric loaded resonator tuned at 15 GHz to evaluate the surface impedance Z of a Nb 3 Sn bulk sample (24.8 at.%Sn). From the field induced variation of Z, the high frequency vortex parameters (the pinning constant k p , the depinning frequency ν p and the flux flow resistivity ρ f f ) were obtained over a large temperature and field range; their field and temperature dependence were analyzed. Comparison with other superconducting materials shows that high frequency applications in strong magnetic fields are also feasible with Nb 3 Sn. In the present work, we report the first measurements about the microwave response in Nb 3 Sn in strong magnetic fields.

show abstract

Influence of the Quasiparticle Lifetime on the Surface Impedance of Superconducting Nb3Sn

Cited by 7 publications

References 6 publications

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb₃Sn

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb₃Sn

Superconducting cavities for accelerators

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb$_3$Sn

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Influence of the Quasiparticle Lifetime on the Surface Impedance of Superconducting Nb3Sn

Cited by 7 publications

References 6 publications

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb3Sn

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb3Sn

Superconducting cavities for accelerators

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb$_3$Sn

Contact Info

Product

Resources

About

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb₃Sn

Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb₃Sn