Challenges and opportunities of srf theory for next generation particle accelerators

A Gurevich, T Kubo, JA Sauls - arXiv preprint arXiv:2203.08315, 2022 - arxiv.org
We suggest a program to establish theoretical performance limits of srf cavities using
modern theories of nonequilibrium superconductivity under a strong electromagnetic field …

Enhanced Surface Superconductivity of Niobium by Zirconium Doping

NS Sitaraman, Z Sun, BL Francis, AC Hire, T Oseroff… - Physical Review …, 2023 - APS
Superconducting radio-frequency (SRF) cavities currently rely on niobium (Nb), and could
benefit from a higher-T c surface, which would enable a higher operating temperature, lower …

Stable implicit numerical algorithm of time-dependent Ginzburg–Landau theory coupled with thermal effect for vortex behaviors in hybrid superconductor systems

QY Wang, C Xue - Superconductor Science and Technology, 2024 - iopscience.iop.org
Hybrid multi-superconducting structures exist in a variety of superconducting devices, such
as superconductor–insulator–superconductor multilayer structure in superconducting radio …

[HTML][HTML] Achieving optimal magnetic flux expulsion of a Nb3Sn superconducting radio-frequency cavity via spatial temperature gradient

A He, XN Hu - Physics Letters A, 2023 - Elsevier
The trapped magnetic flux leads to residual resistance, thereby reducing the quality factor of
the superconducting cavity and affecting its power consumption. It has been experimentally …

Effects of defects and surface roughness on the vortex penetration and vortex dynamics in superconductor–insulator–superconductor multilayer structures exposed to …

QY Wang, C Xue, C Dong… - … Science and Technology, 2022 - iopscience.iop.org
Vortex penetration and vortex dynamics are significantly important to superconducting
devices, for example, the superconducting cavities, since vortex motions will create …

A Finite Element Method for the Dynamical Ginzburg–Landau Equations under Coulomb Gauge

H Gao, W Xie - Journal of Scientific Computing, 2023 - Springer
This paper is concerned with numerical analysis of a finite element method for the time-
dependent Ginzburg–Landau equations under the Coulomb gauge. The main challenge is …

Leveraging code generation for transparent immersogeometric fluid–structure interaction analysis on deforming domains

GE Neighbor, H Zhao, M Saraeian, MC Hsu… - Engineering with …, 2023 - Springer
Code generation technology has been transformative to the field of numerical partial
differential equations (PDEs), allowing domain scientists and engineers to automatically …

Unveiling the nucleation and growth of Zr oxide precipitates in internally oxidized Nb3Sn superconductors

J Lee, Z Mao, D Isheim, DN Seidman, X Xu - Journal of Alloys and …, 2024 - Elsevier
We report on atomic-scale analyses of nucleation and growth of Zr oxide precipitates and
the microstructural evolution of internally oxidized Nb 3 Sn wires for high-field …

[HTML][HTML] Nb3Sn Cavities Coated by Tin Vapor Diffusion Method at Peking University

G Wang, S Quan, L Lin, M Ren, J Hao, F Wang, F Jiao… - Applied Sciences, 2023 - mdpi.com
Nb3Sn-coating experiments on samples and single-cell cavities were conducted at Peking
University (PKU) to understand the Nb3Sn growth process using the vapor diffusion method …

A Time-Dependent Ginzburg-Landau Framework for Sample-Specific Simulation of Superconductors for SRF Applications

AV Harbick, MK Transtrum - arXiv preprint arXiv:2410.20078, 2024 - arxiv.org
Modern superconducting radio frequency (SRF) applications require precise control of a
wide range of material properties, from microscopic material parameters to mesoscopic …