Mainz 2022 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 14: Posters
AKBP 14.5: Poster
Thursday, March 31, 2022, 16:00–17:30, P
Electro-thermal studies of quadrupole resonator designs — •Piotr Putek1, Shahnam Gorgi Zadeh2, Marc Wenskat3,4, Simon Adrian1, and Ursula van Rienen1 — 1Universität Rostock, Rostock, Germany — 2CERN, Meyrin, Switzerland, — 3Universität Hamburg, Hamburg, Germany — 4Deutsches Elektronen-Synchrotron, 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. To precisely determine the radio frequency (RF) properties of superconducting materials, a calorimetric measurement is carried out with the aid of a so-called Quadrupole Resonator (QPR). However, the measurement procedure is affected by various uncertainties, such as geometrical deviations of the cavity design and the accuracy of numerical simulations. Additionally, the measurement bias for the third operational mode is observed in the pre-existing QPR designs, including the QPRs built at CERN and HZB. It motivated us to re-design the QPR to improve the measurement accuracy for the third operational mode (1.3 GHz). We compare the pre-existing QPR designs with optimized configurations from the perspective of electro-thermal simulations.