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Studies of damage limits of superconducting magnet components due to instantaneous beam impact - recent results and future plans
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Europe/Zurich
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CERN
Description
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Abstract:
The damage mechanisms and limits of superconducting accelerator magnets due to the impact of high intensity particle beams have been subject to extensive studies in the past years by the MPE group. Critical parts of the magnets are superconducting strands, consisting of a copper matrix and Nb-Ti or Nb3Sn filaments, and insulating materials like polyimide tapes, fibre glass and epoxies. Several experiments have been performed covering exposure to high temperatures from hours down to ms, at room and liquid helium temperatures, with and without beam. After exposure the properties of the superconductor samples were measured at the University of Geneva. Based on the results of these experiments the main damage mechanisms for polyimide tapes, Nb-Ti and Nb3Sn superconductors were identified. Furthermore, the results allowed to define the maximum tolerable energy deposition for these materials, before a degradation of their properties is expected. In this presentation I will give an overview of the performed studies, summarize the key results and provide an outlook on future plans
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Friedrich Lackner
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