B. Hermann: Dielectric wakefield shaping in the ACHIP chamber

Tuesday 13 Apr 2021, 10:45 → 11:45 Europe/Zurich

Zoom ID: 919 5588 1028 (Passcode: 024225)

10:45 → 11:15 Focus report

10:45 Dielectric wakefield shaping in the ACHIP chamber

This talk summarizes results of recent experiments conducted in the ACHIP chamber, a two-meter long multi-purpose chamber installed in the switchyard to Athos. The presented studies concern wakefields in dielectric microstructures and THz radiation generation with a 3D-printed polymer geometry, which is designed by an inverse design algorithm. The wakefield source under study is a double grating etched into bulk glass with a period of 50 um and an aperture which changes linearly along the grating, ranging from 10 to 100 um. We characterized the wakefield response for different gap sizes and observed a strong dependence on longitudinal centroid offsets (tilts). This device could serve as a tunable passive wakefield source for beam shaping in Athos or a sensitive diagnostic for beam tilts.

Speaker: Benedikt Hermann (PSI - Paul Scherrer Institut)

20210413 Measurements in the ACHIP Chamber Benedikt Hermann.pdf

11:15 → 11:45 MD short reports