Göttingen 2025 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 4: AKBP Posters
AKBP 4.1: Poster
Dienstag, 1. April 2025, 16:30–18:00, ZHG Foyer 1. OG
A novel test cavity setup for surface conductivity measurements of additive manufacturing samples — •Julian Sonpar1, Hendrik Hähnel1, Guenther Dollinger2, Michael Mayerhofer2, and Ricardo Helm2 — 1Goethe University Frankfurt, 60438 Frankfurt am Main, Germany — 2Bundeswehr University Munich, 85579 Neubiberg, Germany
Additive Manufacturing (AM) has the potential to increase the performance of radio frequency (rf) cavity resonators while cutting manufacturing costs. To investigate the surface conductivity of AM samples and postprocessing techniques, a compact rf cavity design has been introduced. The cylindrical cavity is made from Aluminum. The test body is held by a dielectric inside the cavity. A simulation assisted approach has been used to generate the dependence curve of surface conductivity to Quality factor. In order to calibrate this curve, to the rf cavity's experimentally measured Quality factor, an AOFC test body has been used which is assumed to have ideal conductivity. To further investigate the error that is made from said assumption and calibration, another method of generating the mentioned dependence curve is being investigated. This method uses simulations and Q-measurements to precisely evaluate the rf cavity's intrinsic (Aluminum) conductivity and loss tangent of the dielectric material. The aim is to generate the mentioned dependence curve without the need for AOFC test body calibration.
Keywords: Additive Manufacturing; radio frequency; surface conductivity; material post processing