In this contribution we present the calculation of a realistic time dependent geomagnetic cutoff along the International Space Station orbit, at about 400 km above the Earth's surface with an inclination of 51.6o. For this work, based on the analysis of data collected by the AMS02 experiment during the first year of operation, the Tsyganenko 05 and IGRF models have been employed, including the temporal variation of the external component of the geomagnetic field due to the solar activity. The evaluation of the cutoff has been performed every 30 seconds along the ISS orbit by means of a back-tracing technique of 1500 random trajectories simulated in the field of view of the AMS-02 experiment at any given ISS location. The technique and its results will be discussed, as well as the relevance of this study to distinguish galactic cosmic rays from trapped secondary components in the geomagnetic field.
Fiandrini, E., Duranti, M., Bertucci, B., Boschini, M., Crispoltoni, M., Della Torre, S., et al. (2015). Time dependent Geomagnetic Cutoff estimation along the ISS orbit. In 34th International Cosmic Ray Conference, ICRC 2015; The Hague; Netherlands; 30 July - 6 August 2015. Proceedings of Science (PoS).
Time dependent Geomagnetic Cutoff estimation along the ISS orbit
GERVASI, MASSIMOPrimo
;LA VACCA, GIUSEPPE;PENSOTTI, SIMONETTA;ROZZA, DAVIDE;TACCONI, MAURO;ZANNONI, MARIO
2015
Abstract
In this contribution we present the calculation of a realistic time dependent geomagnetic cutoff along the International Space Station orbit, at about 400 km above the Earth's surface with an inclination of 51.6o. For this work, based on the analysis of data collected by the AMS02 experiment during the first year of operation, the Tsyganenko 05 and IGRF models have been employed, including the temporal variation of the external component of the geomagnetic field due to the solar activity. The evaluation of the cutoff has been performed every 30 seconds along the ISS orbit by means of a back-tracing technique of 1500 random trajectories simulated in the field of view of the AMS-02 experiment at any given ISS location. The technique and its results will be discussed, as well as the relevance of this study to distinguish galactic cosmic rays from trapped secondary components in the geomagnetic field.
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