The experiment MONICA for the investigation of solar cosmic ray ion fluxes

The current status of onboard experiment MONICA for study of the fluxes of cosmic ray energetic ions from He to Ni in the energy range 10-300 MeV/n in vicinity of the Earth is presented. MONICA main scientific objective is the measurement of ion charge states, as well as elemental, isotope composition and energy spectra of Solar Energetic Particle (SEP) fluxes for separate SEP events (including impulsive events), and study the evolution of these characteristics in time. The experiment MONICA will be able to study the ion and isotopic composition as Anomalous Cosmic Rays (ACR) and Galactic Cosmic Rays (GCR), as well as the nuclear fluxes in Earth radiation belt. The observation of the ion fluxes will be carried out with the large acceptance multilayer silicon telescope-spectrometer MONICA onboard the polar-orbiting satellite. The satellite orbit parameters (LEO, circular with altitude about 600 km, polar) were chosen for the realization of the ion charge state measurement method at energies more 10 MeV/n based on using of Earth magnetic field as a separator of ion charge. This technique is unique possible for this ion energy range.