TY  - CONF
AU  - Kellermeier, Max
AU  - Assmann, Ralph
AU  - Vinatier, Thomas
AU  - Hillert, Wolfgang
TI  - Numerical Design of a Compact TE11-to-TM01 Mode Converter for THz-driven Electron Acceleration
CY  - Geneva, Switzerland
PB  - JACoW Publishing
M1  - PUBDB-2023-02097
SN  - 978-3-95450-231-8
SP  - 2916 - 2919
PY  - 2023
N1  - Literaturangaben;
AB  - 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 
T2  - 14th International Particle Accelerator Conference
CY  - 7 May 2023 - 12 May 2023, Venice (Italy)
Y2  - 7 May 2023 - 12 May 2023
M2  - Venice, Italy
KW  - Accelerator Physics (Other)
KW  - mc7-accelerator-technology-and-sustainability - MC7: Accelerator Technology and Sustainability (Other)
KW  - mc7-t06-room-temperature-rf - MC7.T06: Room Temperature RF (Other)
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
DO  - DOI:10.18429/JACOW-IPAC2023-WEPA113
UR  - https://bib-pubdb1.desy.de/record/582609
ER  -