LEGRI Background. Short Term Variability |
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| Authors: | FILOMENO Sánchez VICTOR Reglero |
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| Institution: | (1) Instituto de Física Corpuscular (CSIC-UV), P.O. BOX 2085, Valencia, Spain;(2) GACE, Instituto de Ciencias de los Materiales, Universidad de Valencia, P.O. Box 2085, 46071 Valencia, Spain |
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| Abstract: | Background modelling for LEO satellites with high orbital inclination is not an easy task. The diffuse background component is dominated by the background coming from strong interactions with Earth magnetosphere trapped particles. Magnetic shielding is variable along the orbits and crosses through the SAA induce high radioactivity decay counting ratios. The aim of this paper is to present a model for the background total counting ratio of the 17 operative CdZnTe detectors on LEGRI in the short time scales and for observing periods outside crosses through SAA having enough time to cool LEGRI after the last SAA transit. Fluxes measured have been modelled in terms of the McIlwain parameter L using polynomial fits and exponential laws in terms of the geomagnetic cut-off rigidity used on COMPTEL background modelling. A discussion of the results is also included. |
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