Measurement of the cosmic-ray electron flux with the CALET experiment: simulation studies and data analysis.

In this Ph.D. thesis a preliminary version of the event reconstruction and the data analysis procedures used for the measurement of the cosmic-ray electron spectrum are described. A brief review of the galactic cosmic-ray physics, with the most recent measurements of the charged CR, is described in $1. The CALET experiment and its main scientific goals are described in $2. In $3 the implementation and the validation of the complex geometry of the CALET detector within the Monte Carlo (MC) simulation based on GEANT4 package is discussed. A comparison with different MC codes is also presented. The data analysis developed for this Ph.D. thesis is described in $4. An evaluation of the performance of the described analysis techniques obtained with different MC simulations is presented. A preliminary validation of the MC simulation, which is based on comparisons with fight data, and an evaluation of the systematic errors due to the possible effects of physics processes that are not perfectly simulated are also discussed. Finally, the first published measurement of the electron flux by the CALET collaboration is presented.