1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Traveling wave excitation results in SRF cavity with a feedback waveguide at 2K and narrow bandwidth

WEPS141
4 Jun 2025, 16:00
2h
Exhibiton Hall A _Salmon (TWTC)

Exhibiton Hall A _Salmon

TWTC

Poster Presentation MC7.T07 Superconducting RF Wednesday Poster Session

Speaker

Roman Kostin (Euclid Techlabs (United States))

Description

Conventional SRF cavities are used in standing wave regime and are limited by surface fields to ~50 MV/m. In order to overcome this limit, Superconducting Traveling Wave (SCTW) cavity was proposed as it allows to achieve ~1.5 times higher accelerating gradient operating at lower phase advance per cell, thus improving transit time factor. However, power recirculation through a feedback waveguide is required to maintain cavity efficiency. Funded by the U.S. Department of Energy's SBIR program, Euclid Techalbs, in collaboration with Fermilab, demonstrated in the past the surface processing capability of a single-cell prototype with a feedback waveguide. Subsequently, a 3-cell prototype was designed and fabricated to demonstrate a traveling wave regime in SRF cavity with a feedback waveguide at cryogenic temperatures and the highest gradients. Previously, we have demonstrated the feasibility of traveling wave excitation and control at 2K in the cavity with highly loaded QL=1e6, which is typical for high current machines. Here we present our recent results of traveling wave control with a more challenging smaller bandwidth.

Region represented America
Paper preparation format Word

Author

Roman Kostin (Euclid Techlabs (United States))

Co-authors

Fumio Furuta (Fermi National Accelerator Laboratory) Kellen McGee (Fermi National Accelerator Laboratory) Pavel Avrakhov (Euclid Techlabs (United States)) Sergey Belomestnykh (Fermi National Accelerator Laboratory) Vyacheslav Yakovlev (Fermi National Accelerator Laboratory)

Presentation materials

There are no materials yet.