THE AIM OF THE PROPOSED INVESTIGATION IS TO CHARACTERIZE THE RADIATION ENVIRONMENT DUE TO SOLAR ENERGETIC PARTICLES (SEPS) AND GALACTIC COSMIC RAYS (GCRS) AND THE VARIABILITY OF THIS ENVIRONMENT AFFECTED BY THE SUN. THE TWO PRINCIPLE SCIENCE OBJECTIVES OF THIS STUDY ARE 1) QUANTIFICATION OF THE RELATIONSHIP BETWEEN EXTREME SEP EVENTS AND FORBUSH DECREASE AND ANISOTROPY OF THE CGRS OBSERVED AT EARTH AND 2) IDENTIFICATION OF THE MECHANISM OF SEP ACCELERATION AND THEIR ENERGY SPECTRUM AND ANISOTROPY.