NAPAC2022 - List of Authors (Krasnok, A.A.)

Paper	Title	Page
WEPA49	Ferrite-Free Circulator for Precise Measurements of SRF Cavities with High Q-Factor	742
	A.I. Pronikov, A.Yu. Smirnov RadiaBeam, Santa Monica, California, USA A.A. Krasnok Florida International University, Miami, Florida, USA S.N. Romanenko Zaporizhzhya National Technical University, Zaporizhzhya, Ukraine V.P. Yakovlev Fermilab, Batavia, Illinois, USA
	Funding: This work was supported by the US Department of Energy, Offices of High Energy and Nuclear Physics, awards DE-SC0020926 and DE-SC0022439. In this work, we suggest and investigate new magnetless circulators based on three resonators connected in a loop and parametrically modulated in time with mutual phase lag. The first design consists of three Fano resonators with a spectrally asymmetric response, in contrast to schemes based on the Lorentz resonators explored thus far. The second design includes three Fano-Lorentz resonators, i.e., it also possesses spatial asymmetry. We demonstrate that the asymmetric approach provides strong and reversible isolation for the practically feasible modulation amplitude and rate. The results of our work are promising for precise measurements of superconducting radio frequency cavities with high Q-factor.
DOI •	reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEPA49
About •	Received ※ 04 August 2022 — Revised ※ 07 August 2022 — Accepted ※ 09 August 2022 — Issue date ※ 13 September 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Ferrite-Free Circulator for Precise Measurements of SRF Cavities with High Q-Factor

742

A.I. Pronikov, A.Yu. Smirnov
RadiaBeam, Santa Monica, California, USA
A.A. Krasnok
Florida International University, Miami, Florida, USA
S.N. Romanenko
Zaporizhzhya National Technical University, Zaporizhzhya, Ukraine
V.P. Yakovlev
Fermilab, Batavia, Illinois, USA

Funding: This work was supported by the US Department of Energy, Offices of High Energy and Nuclear Physics, awards DE-SC0020926 and DE-SC0022439.
In this work, we suggest and investigate new magnetless circulators based on three resonators connected in a loop and parametrically modulated in time with mutual phase lag. The first design consists of three Fano resonators with a spectrally asymmetric response, in contrast to schemes based on the Lorentz resonators explored thus far. The second design includes three Fano-Lorentz resonators, i.e., it also possesses spatial asymmetry. We demonstrate that the asymmetric approach provides strong and reversible isolation for the practically feasible modulation amplitude and rate. The results of our work are promising for precise measurements of superconducting radio frequency cavities with high Q-factor.

DOI •

reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEPA49

About •

Received ※ 04 August 2022 — Revised ※ 07 August 2022 — Accepted ※ 09 August 2022 — Issue date ※ 13 September 2022

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)