Investigation of Radiation Damage of an Ion Pump Cable

Abstract

  The SPring-8 Storage Ring has been operated since 1997, and the integrated electron beam dose was achieved over 2750 A•hr. Electric cables have been irradiated with the high-intense scattered X-ray from photon absorber, and are damaged. Then we measured the absorbed dose along the laying route of radiation damaged ion pump cable, and compared the result with that of various analyses of the damaged cable. As a result, it was confirmed that absorbed dose correlate closely with mechanical strength, and the melting point of the insulator.