Dose distribution evaluation in oncological radiotherapy treatments is an outstanding problem that requires sophisticated computing technologies to optimize the clinical results (i.e. increase the dose to the tumour and reduce the dose to the healthy tissues). Nowdays, dose calculation algorithms based on the Monte Carlo method are generally regarded as the most accurate tools for radiotherapy....

The GEANT4 code offers an extensive set of hadronic models for various projectiles and energy ranges. These models include theoretical, parameterized and, for low energy neutrons, data driven models. Theoretical or semiempirical models sometimes cannot reproduce experimental data at low energies (<100MeV), especially for low Z elements, and therefore recent GEANT4 developments included a new pa...

In this note we present an update of the validation of Geant4 hadronic physics against the ATLAS pixel 2001 test-beam data. Furthermore, we also report the comparison with Fluka simulation, using the same Geant4 geometry, navigation and digitization.

This paper reports the development of TOUCANS, a new Monte Carlo neutron transport code fully written using GEANT4 toolkit. It aims at modeling complex systems easily and rapidly, thanks to simple key–value input file. While its main focus is low energy neutrons – below 20 MeV evaluated cross-section libraries, it also takes advantage state-of-the-art capabilities offered by regarding modeled c...

Introduction: During the last decades, simulation of radiation therapy treatment conditions in treatment room for studying with more details in comparison with treatment planning system (TPS) is taken into consideration. The most problem with starting these kind of researches is the geometry of Medical linacs and verification of the accelerators. Therefore, researchers tried to...

The measurement of the β asymmetry parameter in nuclear β decay is a potentially very sensitive tool to search for non V −A components in the charge-changing weak interaction. To reach the required precision (percent level) all effects that modify the emission pattern of the β radiation, i.e. the geometry of the setup, the effect of the magnetic field on the trajectories of β particles as well ...

geant4 is an open source simulation toolkit based on c++, which its advantages progressively lead to applications in research domains especially modeling the biological effects of ionizing radiation at the sub-cellular scale. however, it was shown that geant4 does not give a reasonable result in the prediction of antiproton dose especially in bragg peak. one of the reasons could be lack of a re...

Introduction: Ionizing radiation is widely used in industry and medicine; however, it causes a significant health hazard by making microscopic damage to living tissue. Various biological parameters, including cell survival fraction and relative biological effectiveness, are taken into account to assess the severity and extent of biological damages. Microdosimetry suffe...