Lifetime measurement of hbc-foil and nanocrystalline diamond foil by using kek-650 kev high intensity hdc

At the 39 ICFA HB2004 and the EPAC-2006, we reported the lifetime and properties of the newly developed HBC-foils measured by using the 3.2 MeV Ne ion beam. Here, superior durability was shown against high temperature damages by foil deformation, thickness reduction and pin holes production compared with the cluster foils made by the CADAD method. In this report, we compared the lifetime of the HBC-foils with that of other foil types such as high quality nanocrystalline diamond foil by using the KEK-650 keV high intensity Hand DC beam. The beam can deliver the same energy depositions as those in the MW class accelerators such as the J-PARC and the SNS.