Jul 12 – 23, 2021
Online
Europe/Berlin timezone

Measurement of the light component (p+He) energy spectrum with the DAMPE space mission

Jul 14, 2021, 6:00 PM
1h 30m
06

06

Talk CRD | Cosmic Ray Direct Discussion

Speaker

Ms Francesca Alemanno (Gran Sasso Science Institute (GSSI) and INFN Laboratori Nazionali del Gran Sasso (LNGS))

Description

The DArk Matter Particle Explorer (DAMPE) is a space-based particle detector launched in a Sun-synchronous orbit on December 17th, 2015 from the Jiuquan Satellite Launch Center, in China. It is taking data very smoothly since more than 5 years. Science goals of the DAMPE mission include the study of the electron-positron energy spectrum, the study of galactic cosmic-rays, gamma-ray astronomy, and indirect dark matter search. Performing precise measurements of light elements in space, the most abundant components of cosmic radiation, is necessary to address major problems in galactic cosmic ray acceleration and propagation mechanisms. Selecting a p+He sample (instead of protons or He alone) allows larger efficiency and purity, also minimizing systematic effects in the reconstruction of the energy spectrum, due to possible cross-contaminations. The use of looser analysis cuts allows collecting larger statistics thus extending the covered energy range and providing a link between direct and indirect cosmic-ray measurements. The measurement of the p+He energy spectrum up to about 100 TeV will be presented, along with a discussion on the features of the spectrum and a comparison with other experiments.

Subcategory Experimental Results
Collaboration DAMPE

Primary author

Ms Francesca Alemanno (Gran Sasso Science Institute (GSSI) and INFN Laboratori Nazionali del Gran Sasso (LNGS))

Co-authors

Prof. Paolo Bernardini (Università del Salento and INFN Lecce) Dr Antonio De Benedittis (Università del Salento and INFN Lecce) Prof. Ivan De Mitri (Gran Sasso Science Institute (GSSI) and INFN Laboratori Nazionali del Gran Sasso (LNGS)) Dr Zhaomin Wang (Gran Sasso Science Institute (GSSI) and INFN Laboratori Nazionali del Gran Sasso (LNGS))

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