SMuK 2023 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 16: Poster
AKBP 16.3: Poster
Thursday, March 23, 2023, 15:45–18:30, HSZ OG3
Electro-stress-thermal analysis of quadrupole resonator designs — •Piotr Putek1, Shahnam Gorgi Zadeh2, Marc Wenskat3, Simon Adrian1, and Ursula van Rienen1 — 1Universität Rostock, Rostock, Germany — 2CERN, Meyrin, Switzerland — 3Hamburg, Hamburg, Germany
Exploring the fundamental properties of materials such as niobium or Nb3Sn, in terms of high-precision surface resistance measurements, is crucial for the further development of SRF technology. Quadrupole resonators (QPRs) are dedicated devices for determining superconducting materials' radio frequency properties using the so-called calorimetric measurement. Due to the electromagnetic radiation pressure (Lorentz detuning), microphoning, and geometrical deviations of cavity design uncertainties, measurements can substantially be distorted. Therefore, we address a stochastic multi-physical problem to study a significant measurement bias of the surface resistance, observed mainly for the third operating mode of the given HZB-QPR and all modes of CERN2-QPR. We explore the uncertainty quantification technique and sensitivity analysis to efficiently measure the impact of shape deformation on the QPRs' performance. The simulation results and their implication for the operational conditions of the QPR are discussed.
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