Biological experiments in low-flux light-particle fields produced by accelerators

An experimental set-up for irradiation of biological material with low-ener getic and low-mass ions in an external beam has been designed using the cyc lotron U-120 of the Rossendorf Research Centre. The horizontal beam line co nsists of components for beam spread our and control, for particle spectros copy and monitoring and for energy and dose rate variation. To prove the pe rformance of the beam line, a first radiobiological experiment has been car ried out by exposing of R1 fish liver cells to 8.2 MeV protons. (C) 2000 El sevier Science B.V. All rights reserved.