en Medical Physics Medical Physics گزارش کوتاه Short Report <p><strong>Background:</strong> High density concrete is extensively used for efficient radiation attenuation in radiotherapy rooms and nuclear reactors. Over the past eight years, some efficient galena-based concrete samples for shielding X or gamma rays was produced. The goal of this study was to produce a novel high density concrete against neutron and photon radiations using tourmaline and galena. <strong>Materials and Methods:</strong> Attenuation of gamma photons was measured using a Farmer type ionization chamber with a standard ⁶⁰Co buildup cap on a Theratron ⁶⁰Co therapy unit. Neutron shielding characteristics were measured by using an Am-Be source. The MCNP4C radiation transport computer code was used to investigate the effects of various shield thicknesses on the attenuation of gamma-ray photons and neutrons. <strong>Results:</strong> The concrete samples had a density of 4.0- 4.2 g/cm³. The compressive strength was 326 - 560 kg/cm². The calculated value for Half Value Layer (HVL) of the tourmaline-galena concrete samples for 60Co gamma rays was 2.72 cm, which is much less than that of ordinary concrete (6.0 cm). The MC-derived HVL for photons with the same energy was 2.77 cm, which is in a good agreement with the experimental data. Moreover, ToGa concrete had up to 10 times greater neutron attenuation compared to that of the reference concrete. <strong>Conclusion:</strong> Tourmalin-Galena Concrete opens a new horizon in economic and efficient gamma/neutron shielding in high-energy radiotherapy bunkers, nuclear power plants, and shielding of radioactive sources.</p> Heavy concrete, boron rich mineral, radiation shielding, Monte Carlo simulation 277 282 http://ijrr.com/browse.php?a_code=A-10-1-517&slc_lang=en&sid=1 S.M.R. Aghamiri 790031947532846009527 790031947532846009527 No Radiation Medicine Department, Shahid Beheshti University, Tehran, Iran S.M.J. Mortazavi 790031947532846009528 790031947532846009528 No Medical Physics Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran M.A. Mosleh Shirazi 790031947532846009529 790031947532846009529 No Physics Unit, Radiotherapy Department, Shiraz University of Medical Sciences, Shiraz, Iran M. Baradaran-Ghahfarokhi 790031947532846009530 790031947532846009530 No Medical Physics and Medical Engineering Department, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran F. Rahmani 790031947532846009531 790031947532846009531 No Department of Physics, KNT university of Technology, Tehran, Iran A. Amiri 790031947532846009532 790031947532846009532 No Chemical Engineering Department, New Mexico State University, Las Cruces, New Mexico, USA S. Jarideh sjarideh726@gmail.com 790031947532846009533 790031947532846009533 Yes Ionizing and Non-ionizing Radiation Protection Research Center, Shiraz University of Medical Sciences, Shiraz, Iran