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

High Gradient Testing of a Two-Cell C-band Accelerator Cavity with NiCr Higher-Order Mode Absorbers

TUP7313
19 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC7.T06: Normal Conducting RF Poster session

Speaker

Evgenya Simakov (Los Alamos National Laboratory)

Description

This presentation will report on the status of fabrication, tuning, and high gradient testing of a two-cell accelerator cavity with distributed coupling and higher-order-mode (HOM) damping slots covered with nickel-chromium (NiCr) absorbing material. The cavity is designed with a specific purpose to demonstrate applicability of NiCr material for damping HOMs in a C-band distributed-coupling accelerating structure, such as may be used in a C3 linear collider. The purpose of this experiment is to conduct a simple high-power test to understand fabrication challenges for the cavity with NiCr HOM absorbers and examine performance of the NiCr coating during high power conditioning. We will report the detailed electromagnetic and engineering design of the cavity, fabrication, cold testing, tuning and the results of high gradient testing at the CERF-NM C-band high gradient test facility at Los Alamos National Laboratory.

Funding Agency

U.S. Department of Energy through Los Alamos National Laboratory, under Contract No. 89233218CNA000001

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Authors

Dongsung Kim (Los Alamos National Laboratory) Emilio Nanni (SLAC National Accelerator Laboratory) Evgenya Simakov (Los Alamos National Laboratory) Haoran Xu (Los Alamos National Laboratory) Zenghai Li (SLAC National Accelerator Laboratory)

Presentation materials

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