• S. Ito, H. Matsuzaki, A. Morita
  NEM, Tokyo

The 1.7 MV tandem accelerator RAPID (Rutherford Backscattering Spectroscopic Analyzer with Particle Induced X-ray Emission and Ion Implantation Devices), the University of Tokyo has been dedicated to various scientific and engineering studies in a wide range of fields by the ion beam analysis availability, including RBS (Rutherford Backscattering Spectroscopy), PIXE (Particle induced X-ray emission) and ion implantation. Total accelerator operation time amounted 9,358 hours since its installation with the highest annual operation time recorded in 2007. RAPID-PIXE analysis system has been contributed to many environmental studies by analyzing elemental composition of water and sediments samples. It is also applied to the analysis of several cultural heritages such as a works of gilded frame from Renaissance in Italy. Recently, the low level ion irradiation system was also developed and applied for the study of CR-39 track detector with proton beam.