%0 Conference Paper
%A Kellermeier, Max
%A Assmann, Ralph
%A Vinatier, Thomas
%A Hillert, Wolfgang
%T Numerical Design of a Compact TE11-to-TM01 Mode Converter for THz-driven Electron Acceleration
%C Geneva, Switzerland
%I JACoW Publishing
%M PUBDB-2023-02097
%@ 978-3-95450-231-8
%P 2916 - 2919
%D 2023
%Z Literaturangaben;
%< [Ebook] IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings / hosting institutions: INFN, Elettra Sincotrone Trieste , [Geneva] : JACoW Publishing, [2023],
%X In recent years the generation of high power millimeter wave and Terahertz radiation has progressed substantially, enabling electron beam manipulation and acceleration in structures with a footprint of several centimeters. However, in many experiments the external driving pulse is coupled collinearly into the waveguide structure which increases the coupling footprint relative to the wavelength tremendously(≈30 𝜆 or more) in comparison to conventional structures(≈1 𝜆 or less). Here, the design of a double-bend mode con-verter for 300 GHz is presented which converts the fundamental TE11 mode quasi-instantaneously to the TM01 mode for the accelerating structure. In comparison to an s-shaped converter, the present design makes an additional waveguide bend obsolete. The structure length along the beam axis is only 4 mm (4 𝜆), showing a major advance in compactness. Combined with a horn antenna for free-space to waveguide  coupling, the maximum power coupled into the structure reaches 83 
%B 14th International Particle Accelerator Conference
%C 7 May 2023 - 12 May 2023, Venice (Italy)
Y2 7 May 2023 - 12 May 2023
M2 Venice, Italy
%K Accelerator Physics (Other)
%K mc7-accelerator-technology-and-sustainability - MC7: Accelerator Technology and Sustainability (Other)
%K mc7-t06-room-temperature-rf - MC7.T06: Room Temperature RF (Other)
%F PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
%9 Contribution to a conference proceedingsContribution to a book
%R 10.18429/JACOW-IPAC2023-WEPA113
%U https://bib-pubdb1.desy.de/record/582609