Measurements of Nuclei Fluxes in Cosmic Rays with CALET*

The CALorimetric Electron Telescope (CALET) has been measuring high-energy cosmic rays on the International Space Station since October 2015. The scientific objectives addressed by the mission are the measurement of the electron spectrum in the TeV region as well as the measurement of nuclei fluxes from proton to iron in the range from a few tens of GeV to the PeV scale to investigate the details of their origin and propagation in the galaxy. The features of the instrument include excellent charge resolution based on the segmented scintillator paddles and scintillating fibers and very good energy resolution provided by its thick calorimeter. The details about the analysis procedure of nuclei measurements and preliminary results of energy spectra for nuclei upto 100 TeV and boron-to-carbon flux ratio with three years of operations will be presented.