نتایج جستجو برای: geant4
تعداد نتایج: 1269 فیلتر نتایج به سال:
This paper demonstrates the impact of pre-chemical stage, especially dissociation scheme and associated probabilities, on water radiolysis simulation using Geant4-DNA Monte Carlo track structure toolkit. The models parameters provided by TRACs have been collected implemented into Geant4-DNA. In order to evaluate their influence simulation, radiochemical yields (G-values) are evaluated as a func...
Polarization measurements in the X-ray and gamma-ray energy range can provide crucial information on massive compact objects such as black holes and neutron stars. The Polarized Gamma-ray Observer (PoGO) is a new balloon-borne instrument designed to measure polarization from astrophysical objects in the 30-100 keV range, under development by an international collaboration with members from Unit...
The production, application, and/or measurement of polarised X-/gamma rays are key to the fields synchrotron science and X-/gamma-ray astronomy. design, development optimisation experimental equipment utilised in these typically relies on use Monte Carlo radiation transport modelling toolkits such as Geant4. In this work Geant4 “G4LowEPPhysics” electromagnetic physics constructor has been recon...
In this paper, the authors' review the applicability of the open-source GATE Monte Carlo simulation platform based on the GEANT4 toolkit for radiation therapy and dosimetry applications. The many applications of GATE for state-of-the-art radiotherapy simulations are described including external beam radiotherapy, brachytherapy, intraoperative radiotherapy, hadrontherapy, molecular radiotherapy,...
We study energy deposition by light nuclei in tissue-like media taking into account nuclear fragmentation reactions, in particular, production of secondary neutrons. The calculations are carried out within a Monte Carlo model for heavy-ion therapy (MCHIT) based on the GEANT4 toolkit. Experimental data on depth-dose distributions for 135-400 A MeV (12)C and (18)O beams are described very well wi...
Geant4 native pre-equilibrium and de-excitation models are used for sampling of residual nucleus fragmentation in a number of generators of inelastic hadron/ion interaction with nuclei including QGS, FTF, Binary Cascade, QMD and some others. The pre-compound model is responsible for pre-equlibrium emission of protons, neutrons and light ions. The de-excitation model provides sampling of evapora...
Process checkpoint-restart is a technology with great potential for use in HEP workflows. Use cases include debugging, reducing the startup time of applications both in offline batch jobs and the High Level Trigger, permitting job preemption in environments where spare CPU cycles are being used opportunistically and efficient scheduling of a mix of multicore and single-threaded jobs. We report ...
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