The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) Instrument

Beam Test Results of the ISS-CREAM Calorimeter

“…Beam Test Results of the ISS-CREAM Calorimeter H.G Zhang the slope is found to be 5.74 MeV/GeV, and the total energy deposit with a 150 GeV incident beam is 860 MeV. The result is consistent with the beam test result of the previous balloon-borne CREAM calorimeters [9].…”

Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM)

“…It is designed to meet the challenging requirement to have a large enough geometry factor to collect adequate statistics for the low flux of high-energy particles, and yet stay within the JEM-EF weight and volume limit. The primary instrument flown on the balloon-borne CREAM [3] was repackaged into the smaller volume available on the JEM-EF [4,5].…”

Measurement of cosmic-ray carbon and oxygen energy spectra with CALET

“…Recent observations of a spectral hardening in proton, helium (Aguilar et al, 2015;Adriani et al, 2011;Yoon et al, 2011;Yoon et al, 2017) as well as in heavy nuclei spectra (Ahn et al, 2010;Aguilar et al, 2017) around a few hundred GeV/n, compelled a revision of the standard paradigm of galactic CR based on diffusive shock acceleration in supernova remnants fol-lowed by propagation in galactic magnetic fields, and prompted an intense theoretical activity to interpret these unexpected spectral features (Serpico, 2015;Tomassetti, 2012;Evoli et al, 2018;Ohira et al, 2016;Vladimirov et al, 2012;Ptuskin et al, 2013;Thoudam and Ho ¨randel, 2014). In the meanwhile, new experimental efforts are being undertaken to accurately determine the onset of spectral hardening and extend its measurement up to the TeV scale (Atkin et al, 2017;Chang et al, 2017;Smith et al, 2017).…”