Measurements of Heavy Cosmic-Ray Nuclei Spectra from CALET on the ISS
Abstract
The CALorimetric Electron Telescope, CALET, was launched in August 2015 and has been measuring high-energy cosmic rays on the International Space Station since October 2015. In addition to the high-precision measurements of the all electron spectrum, CALET also performs the precise measurements of the energy spectra of elements from proton to iron, the relative abundances and the secondary-to-primary ratios to the highest energies ever directly observed in space. These will allow for the investigation of the details of their origin and propagation in the galaxy. The CALET instrument consists of two layers of segmented plastic scintillators to identify the individual elements from Z=1 to 40, a fine-grained imaging calorimeter to obtained complementary charge and tracking information, and a total absorption calorimeter to measure the energy with a total 30 radiation lengths and 1.3 nuclear interaction lengths.We will present the details of heavy nuclei (Z>8) analysis including the particle identification capabilities and the analysis of the systematic uncertainties.
- Publication:
-
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018
- Bibcode:
- 2018cosp...42E..48A