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TT: Fachverband Tiefe Temperaturen

TT 5: Superconductivity: Properties and Electronic Structure I

TT 5.5: Vortrag

Montag, 17. März 2025, 10:30–10:45, H36

Local limit disorder characteristics of superconducting radio frequency cavities II. Quality factor — Anastasiya Lebedeva, Matúš Hladký, Marcel Polák, and •František Herman — Comenius University in Bratislava

Nowadays superconducting radio frequency (SRF) cavities represent fundamental tools used for (Standard Model) particle acceleration, (beyond Standard Model) particle probing, and long-lifetime photon preservation. We study their Quality factor properties mainly at low temperatures within the Dynes superconductor model [1]. We scrutinize and use the local limit response to the external electromagnetic field. Assuming the same regime at low temperatures, we address details of the high-quality plateaus. This work presents (and studies the limits of) the simple effective description of the complex problem corresponding to the electromagnetic response in the superconductors combining homogeneous conventional pairing and two different kinds of disorder scattering.

This work has been supported by the Slovak Research and Development Agency under the Contract no. APVV-23-0515, by the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 945478.

[1] A. Lebedeva, M. Hladký, M. Polák, F. Herman, arXiv:2409.04203v1.

Keywords: Superconducting Radio Frequency Cavities; Dynes supercoductor; Quality factor; Local limit electromagnetic response