Description
In the last few decades, there has been an increased interest towards scaling down linear accelerators. The Terahertz (THz) Dielectric Accelerator developed, within the scope of the TWAC European project, is a technology that will tend toward that goal. The driving peak field for electron acceleration in the dielectric accelerator is directly related to the peak electric field and polarization of the THz source. On TWAC, we expect to obtain a high accelerating field in the dielectric through a multicycle THz pulse, and a cylindrically symmetric coupler which requires radial polarization. Here, we report on the experimental polarization characterization of the THz source. Firstly, we show the THz transverse profile. Then we mapped in 2D, through rasterization, the p- and s-polarization components of the THz pulse to discriminate the radial polarization. To end we show the preliminary measured coupling efficiency.
Funding Agency
CNRS/MITI interdisciplinary programs
TWAC EIC/European Union’s Horizon Europe Research and Innovation Program: grant agreement number 101046504
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