| Article | |
| Title | High-Power Test of Two Prototype X-Band Accelerating Structures Based on SwissFEL Fabrication Technology |
| Author(s) | Millar, William L (CERN) ; Grudiev, Alexej (CERN) ; Wuensch, Walter (CERN) ; Lasheras, Nuria Catalan (CERN) ; McMonagle, Gerard (CERN) ; Zennaro, Riccardo (PSI, Villigen) ; Craievich, Paolo (PSI, Villigen) ; Bopp, Markus (PSI, Villigen) ; Lucas, Thomas G (PSI, Villigen) ; Volpi, Matteo (CERN ; Melbourne U.) ; Paszkiewicz, Jan (CERN) ; Edwards, Amelia (CERN) ; Wegner, Rolf (CERN) ; Bursali, Hikmet (CERN ; U. Rome La Sapienza (main)) ; Woolley, Benjamin (CERN) ; Magazinik, Anastasiya (CERN) ; Syratchev, Igor (CERN) ; Vnuchenko, Anna (CERN) ; Pitman, Samantha (CERN) ; del Pozo Romano, Veronica (CERN) ; Bañón Caballero, David (CERN ; Valencia U., IFIC) ; Burt, Graeme (Cockcroft Inst. Accel. Sci. Tech.) |
| Publication | 2023 |
| Number of pages | 19 |
| In: | IEEE Trans. Nucl. Sci. 70 (2023) 1-19 |
| DOI | 10.1109/tns.2022.3230567 |
| Subject category | Nuclear Physics - Experiment ; Accelerators and Storage Rings |
| Study | CLIC |
| 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 “tuning-free” 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’ 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’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. |
| Copyright/License | publication: (License: CC-BY-4.0) |
Corresponding record in: Inspire
Record created 2023-02-15, last modified 2023-03-28
