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University of Marburg,

By D. Severin, W. Ensinger, R. Neumann, C. Trautmann, G. Walter, I. Alig and Tu Darmstadt


This study concentrates on radiation-induced ageing effects of polymers planned as insulating materials in the rapidly cycling superconducting magnets presently being developed for the FAIR facility. Although beam control and minimization of beam losses will be a major issue, the exposure of insulating parts (e.g. polyimide, polyetherimide, and glassenforced epoxy-compounds) of various accelerator components to x-rays, gammas, neutrons, and scattered light or heavy particles may limit long-term operation. We started to investigate degradation processes of commercial polyimide films (Kapton™, thickness 12, 25, and 50 µm) by irradiating them with various heavy ions at room temperature. The experiments were performed at the UNILAC with Ti, Mo, and Au of energy up to 11 MeV/u applying fluences between 1×10 10 and 2×10 12 ions/cm 2 unde

Year: 2010
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