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The acceleration of electrons in dielectric laser accelerators (DLAs) with a triangular ridge profile on the structure's surface was investigated. The aim was to to determine the maximum acceleration gradients when using DLA with triangular profiles. Single chip structures with a triangular profile, both transparent and reflective to laser radiation, were considered. The acceleration gradients were found as a function of the base angle of the grating ridge. Left-handed and right-handed variations of these triangular structures, differing in the ridge tilt direction, were also examined. Electron acceleration using double-triangular structures, consisting of various combinations of transparent and opaque structures, was also conducted. The maximum values of energy gain and acceleration gradients for all investigated combinations of single and double chip structures were determined and quantified. The effect of the longitudinal displacement of one structure relative to the other in a double configuration on the change in energy gain and acceleration rate was also studied. Based on the obtained results, it can be stated that in DLAs with a triangular profile, acceleration rates can reach 400 MeV/m.
This study is supported by the National Research Foundation of Ukraine under the program “Excellent Science in Ukraine” (project # 2023.03/0182).
Funding Agency
The study is supported by the National Research Foundation of Ukraine under the program “Excellent Science in Ukraine” (project # 2023.03/0182).
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