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PROTON AND HEAVY ION FACILITIES FOR SPACE RADIO-BIOLOGY RESEARCH.  J. Miller, Lawrence Berkeley National Laboratory Berkeley, California

   The electromagnetic and nuclear interactions of heavy charged particles—protons and heavier atomic nuclei—must be taken into account in order to understand and address the effects of solar particle events andgalactic cosmic radiation on humans in space.  Until relatively recently, most of the research into nuclear interactions in matter was driven primarily by the interests of the nuclear physics and radiotherapy research communities. However, many of the particles and energies used in radiobiology, radiotherapy and nuclear physics research on Earth are highly relevant for space radiation studies, and the experimental and theoretical methods and accelerator facilities developed for use in proton and heavy ion nuclear physics and radiotherapy are directly applicable to space radiobiology.  I will survey the particle accelerator facilities available for ground-based space radiation research, and discuss the implications of some recent measurements.