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We have developed aran04 a tool for rapid predictions of proton flux and fluence profilesobserved during gradual solar energetic particle (SEP) events and upstream of the associated travelinginterplanetary shocks. This code, named SOLPENCO (for SOLar Particle ENgineering COde), contains adata base with a large set of interplanetary scenarios under which SEP events develop. These scenariosare basically defined by the solar longitude of the parent solar activity, ranging from E75 to W90,and by the position of the observer, located at 0.4 AU or at 1.0 AU, from the Sun. We are nowanalyzing the performance and reliability of SOLPENCO. We address here two features of SEP eventsespecially relevant to space weather purposes: the peak flux and the fluence. We analyze how the peakflux and the fluence of the synthetic profiles generated by SOLPENCO vary as a function of thestrength of the CME-driven shock, the heliolongitude of the solar parent activity and the particleenergy considered. In particular, we comment on the dependence of the fluence on the radial distanceof the observer (which does not follow an inverse square law), and we draw conclusions about theinfluence of the shock as a particle accelerator in terms of its evolving strength and theheliolongitude of the solar site where the SEP event originated

Fluxes and fluences of SEP events derived from SOLPENCO