Superconducting RF materials other than bulk niobium: a review

AM Valente-Feliciano - Superconductor Science and Technology, 2016 - iopscience.iop.org
For the past five decades, bulk niobium (Nb) has been the material of choice for
superconducting RF (SRF) cavity applications. Alternatives such as Nb thin films and other …

Nitrogen doping and infusion in SRF cavities: A review

P Dhakal - Physics Open, 2020 - Elsevier
Advances in SRF technology over the last 40 years allowed achieving accelerating
gradients~ 50​ MV/m corresponding to peak surface magnetic fields close to the theoretical …

Nitrogen and argon doping of niobium for superconducting radio frequency cavities: a pathway to highly efficient accelerating structures

A Grassellino, A Romanenko… - Superconductor …, 2013 - iopscience.iop.org
We report a surface treatment that systematically improves the quality factor of niobium radio
frequency cavities beyond the expected limit for niobium. A combination of annealing in a …

[HTML][HTML] RF surface resistance tuning of superconducting niobium via thermal diffusion of native oxide

EM Lechner, JW Angle, FA Stevie, MJ Kelley… - Applied Physics …, 2021 - pubs.aip.org
Recently, Nb superconducting radio frequency cavities vacuum heat treated between 300
and 400 C for a few hours have exhibited very high quality factors (∼ 5× 10 10 at 2.0 K) …

Theory of RF superconductivity for resonant cavities

A Gurevich - Superconductor Science and Technology, 2017 - iopscience.iop.org
An overview of a theory of electromagnetic response of superconductors in strong radio-
frequency (RF) electromagnetic fields is given with the emphasis on applications to …

Field-dependent nonlinear surface resistance and its optimization by surface nanostructuring in superconductors

T Kubo, A Gurevich - Physical Review B, 2019 - APS
We propose a theory of nonlinear surface resistance of a dirty superconductor in a strong
radio-frequency (rf) field, taking into account magnetic and nonmagnetic impurities, finite …

Tuning microwave losses in superconducting resonators

A Gurevich - Superconductor Science and Technology, 2023 - iopscience.iop.org
The performance of superconducting resonators, particularly cavities for particle
accelerators and micro cavities and thin film resonators for quantum computations and …

Superconducting microwave cavities and qubits for quantum information systems

A Krasnok, P Dhakal, A Fedorov, P Frigola… - Applied Physics …, 2024 - pubs.aip.org
Superconducting microwave cavities featuring ultrahigh Q-factors, which measure the
efficiency of energy storage in relation to energy loss in a system, are revolutionizing …

Flux expulsion in niobium superconducting radio-frequency cavities of different purity and essential contributions to the flux sensitivity

P Dhakal, G Ciovati, A Gurevich - Physical Review Accelerators and Beams, 2020 - APS
Magnetic flux trapped during the cooldown of superconducting radio-frequency cavities
through the transition temperature due to incomplete Meissner state is known to be a …

Reduction of dissipative nonlinear conductivity of superconductors by static and microwave magnetic fields

A Gurevich - Physical review letters, 2014 - APS
A theory of dissipative nonlinear conductivity, σ 1 (ω, H), of s-wave superconductors under
strong electromagnetic fields at low temperatures is proposed. Closed-form expressions for …