ANALYSIS OF THE EFFECT OF STRUCTURAL MATERIALS IN A WALL-LESS TISSUE-EQUIVALENT PROPORTIONAL COUNTER IRRADIATED BY 290 MeV u-1 CARBON BEAM

Effects of structural materials in a wall-less tissue-equivalent proportional counter were evaluated based on the calculation of energy deposits by EGS5 and the measurement of lineal energy distributions using 290 MeV u(-1) carbon beams. It is found that the correction of measured data based on simulation is necessary for understanding the energy deposition spectra in the homogeneous condition in tissues.