Feasibility study on an analysis of CR helium flux with the CALET detector based on an extended acceptance
August 17, 2023
In this work, we present a feasibility study aiming at a measurement of the cosmic ray (CR) helium flux utilizing CALET data with a significantly enhanced statistical precision. It is based on
a wider geometrical acceptance compared to the current CALET analysis while ensuring a correct identification of charged particles crossing the detector. The expected statistical enhancement for the all-acceptance configuration is nearly a factor of two compared to the previous analysis, over the entire energy range from tens of GeV to hundreds of TeV. Preliminary assessment of efficiencies and background sources has been carried out based on energy-dependent charge selections.
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