The High-Energy Particle Detector (HEPD-01) is one of the particle detectors installed on board the China Seismo-Electromagnetic Satellite (CSES-01). The instrument consists of different subdetectors, including two planes of double-sided silicon microstrip sensors, a calorimeter constituted by 16 plastic scintillators and a layer of LYSO crystals, and a scintillator veto system surrounding the calorimeter. The detector is dedicated to the measurement of proton (30-200 MeV) and electron (3-100 MeV) fluxes, and their variations induced by short-time perturbations of the radiation belts due to solar, terrestrial, or anthropic phenomena. Although the detector is capable to measure particles with a galactic origin, due to its energy range and to the CSES-01 polar orbit, HEPD collects particles below the local geomagnetic cutoff for a large fraction of its total live time. In this work, the differential spectrum of re-entrant leptons (the downward-moving component of secondary electrons and positrons produced in the interactions of cosmic ray protons with the atmosphere) is measured in the near-equatorial region (altitude about 500 km) in the energy interval between 10 and 100 MeV where there is a lack of recent experimental data.
Measurement of the re-entrant lepton spectrum with the High-Energy Particle Detector on board CSES-01 / Sotgiu, A.; Bartocci, S.; Battiston, R.; Benotto, F.; Beole, S.; Burger, W. J.; Campana, D.; Castellini, G.; Cipollone, P.; Coli, S.; Conti, L.; Contin, A.; Cristoforetti, M.; De Cilladi, L.; De Donato, C.; De Santis, C.; Follega, F. M.; Gebbia, G.; Iuppa, R.; Lolli, M.; Marcelli, N.; Martucci, M.; Masciantonio, G.; Merge, M.; Mese, M.; Neubuser, C.; Nozzoli, F.; Oliva, A.; Osteria, G.; Pacini, L.; Palma, F.; Palmonari, F.; Parmentier, A.; Perfetto, F.; Picozza, P.; Piersanti, M.; Pozzato, M.; Ricci, E.; Ricci, M.; Ricciarini, S. B.; Sahnoun, Z.; Scotti, V.; Sotgiu, A.; Sparvoli, R.; Vitale, V.; Zoffoli, S.; Zuccon, P.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - 395:(2022). (Intervento presentato al convegno 37th International Cosmic Ray Conference, ICRC 2021 tenutosi a deu nel 2021).
Measurement of the re-entrant lepton spectrum with the High-Energy Particle Detector on board CSES-01
Battiston R.;Burger W. J.;Conti L.;Cristoforetti M.;Follega F. M.;Gebbia G.;Iuppa R.;Masciantonio G.;Neubuser C.;Nozzoli F.;Palma F.;Ricci E.;Zuccon P.
2022-01-01
Abstract
The High-Energy Particle Detector (HEPD-01) is one of the particle detectors installed on board the China Seismo-Electromagnetic Satellite (CSES-01). The instrument consists of different subdetectors, including two planes of double-sided silicon microstrip sensors, a calorimeter constituted by 16 plastic scintillators and a layer of LYSO crystals, and a scintillator veto system surrounding the calorimeter. The detector is dedicated to the measurement of proton (30-200 MeV) and electron (3-100 MeV) fluxes, and their variations induced by short-time perturbations of the radiation belts due to solar, terrestrial, or anthropic phenomena. Although the detector is capable to measure particles with a galactic origin, due to its energy range and to the CSES-01 polar orbit, HEPD collects particles below the local geomagnetic cutoff for a large fraction of its total live time. In this work, the differential spectrum of re-entrant leptons (the downward-moving component of secondary electrons and positrons produced in the interactions of cosmic ray protons with the atmosphere) is measured in the near-equatorial region (altitude about 500 km) in the energy interval between 10 and 100 MeV where there is a lack of recent experimental data.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
