17–22 May 2026
C.I.D
Europe/Zurich timezone

Field Flatness and Mode Sensitivity in Multicell Cavities with Variable Reactances

TUP7338
19 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC7.T07: Superconducting RF Poster session

Speaker

Carlos Aguilar (Old Dominion University, Thomas Jefferson National Accelerator Facility)

Description

The introduction of variable reactances, such as those enabled by ferroelectric fast reactive tuners (FE-FRTs); offers new avenues for dynamic field control in superconducting RF cavities. This contribution examines how localized reactive elements affect field flatness and mode separation in multicell SRF structures. Using simplified transmission-line models and warm bead-pull measurements, we quantify the relationship between reactance magnitude, field distortion, and mode coupling. The study highlights both the potential and the challenges of implementing active, non-mechanical tuners in multi-resonant environments. These results provide practical design insight for future FE-FRT applications in high-Q SRF systems, where precision and stability must coexist with fast frequency control.

Funding Agency

This work is supported by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177

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Author

Carlos Aguilar (Old Dominion University, Thomas Jefferson National Accelerator Facility)

Co-authors

Alejandro Castilla (Thomas Jefferson National Accelerator Facility) Tom Powers (Thomas Jefferson National Accelerator Facility)

Presentation materials

There are no materials yet.