@Article{Millar+BanonCaballero2023,
author="Millar, W. L. et al
and Ba{\~{n}}on Caballero, D.",
title="High-Power Test of Two Prototype X-Band Accelerating Structures Based on SwissFEL Fabrication Technology",
journal="IEEE Transactions on Nuclear Science",
year="2023",
publisher="Ieee-Inst Electrical Electronics Engineers Inc",
volume="70",
number="1",
pages="1--19",
optkeywords="Radio frequency; Life estimation; Temperature measurement; Wires; Electric breakdown; Brazing; Rendering (computer graphics); Acceleration; breakdown; high gradient; linear accelerator cavity (LINAC); radio frequency (RF); test facilities; vacuum arc; X-band",
abstract="This article presents the design, construction, and high-power test of two {\$}X{\$} -band radio frequency (RF) accelerating structures built as part of a collaboration between CERN and the Paul Scherrer Institute (PSI) for the compact linear collider (CLIC) study. The structures are a modified {\textquoteleft}{\textquoteleft}tuning-free {\textquoteright}{\textquoteright} variant of an existing CERN design and were assembled using Swiss free electron laser (SwissFEL) production methods. The purpose of the study is two-fold. The first objective is to validate the RF properties and high-power performance of the tuning-free, vacuum brazed PSI technology. The second objective is to study the structures{\textquoteright} high-gradient behavior to provide insight into the breakdown and conditioning phenomena as they apply to high-field devices in general. Low-power RF measurements showed that the structure field profiles were close to the design values, and both structures were conditioned to accelerating gradients in excess of 100 MV/m in CERN{\textquoteright}s high-gradient test facility. Measurements performed during the second structure test suggest that the breakdown rate (BDR) scales strongly with the accelerating gradient, with the best fit being a power law relation with an exponent of 31.14. In both cases, the test results indicate that stable, high-gradient operation is possible with tuning-free, vacuum brazed structures of this kind.",
optnote="WOS:000920658600001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5471), last updated on Mon, 27 Feb 2023 10:28:52 +0000",
issn="0018-9499",
doi="10.1109/TNS.2022.3230567",
opturl="https://doi.org/10.1109/TNS.2022.3230567",
language="English"
}