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This extended abstract briefly summarizes ongoing research activity on the evaluation and experimental validation of physics methods for photon and electron transport. The analysis includes physics models currently implemented in Geant4 as…

Whether for shielding applications or for criticality safety studies, solving the neutron transport equation with good accuracy requires to take into account the resonant structure of cross sections in part of the Unresolved Resonance…

Computational Physics · Physics 2024-04-26 M. Zmeškal , L. Thulliez , P. Tamagno , E. Dumonteil

In view of the trend towards smaller samples and experiments under extreme conditions it is important to deliver small and homogeneous neutron beams to the sample area. For this purpose, elliptic and/or Montel mirrors are ideally suited as…

Instrumentation and Detectors · Physics 2015-12-09 Stefan Weichselbaumer , Georg Brandl , Robert Georgii , Jochen Stahn , Tobias Panzner , Peter Böni

A R&D project has been launched in 2009 to address fundamental methods in radiation transport simulation and revisit Geant4 kernel design to cope with new experimental requirements. The project focuses on simulation at different scales in…

The ELIMED (MEDical and multidisciplinary application at ELI Beamlines) beam line is being developed at INFN-LNS with the aim of transporting and selecting in energy proton and ion beams accelerated by laser-matter interaction at ELI…

Geant4 is a Monte Carlo radiation transport toolkit that is becoming a tool of generalized application in areas such as high-energy physics, nuclear physics, astroparticle physics, or medical physics. Geant4 provides an optical physics…

Astrophysics · Physics 2009-06-23 João Costa , Mário Pimenta , Bernardo Tomé

The quest for improved neutron capture cross sections for advanced reactor concepts, transmutation of radioactive wastes as well as for astrophysical scenarios of neutron capture nucleosynthesis has motivated new experimental efforts based…

Instrumentation and Detectors · Physics 2013-10-17 M. Heil , R. Reifarth , M. M. Fowler , R. C. Haight , F. Käppeler , R. S. Rundberg , E. H. Seabury , J. L. Ullmann , J. B. Wilhelmy , K. Wisshak

The HIBEAM and NNBAR experiments are a proposed fundamental science experiments at the European Spallation Source, performing high precision searches for neutron conversions in several baryon number violating (BNV) channels. For simulations…

Data Analysis, Statistics and Probability · Physics 2022-09-20 Matthias Holl , Rodion Kolevatov , Bernhard Meirose , David Milstead , Blahoslav Rataj , Valentina Santoro , Luca Zanini

The bremsstrahlung spectra produced by electrons impinging on thick targets are simulated using the Geant4 Monte Carlo toolkit. Simulations are validated against experimental data available in literature for a range of energy between 0.5…

Medical Physics · Physics 2015-04-10 Luciano Pandola , Claudio Andenna , Barbara Caccia

A research and development (R&D) project related to the extension of the Geant4 toolkit has been recently launched to address fundamental methods in radiation transport simulation. The project focuses on simulation at different scales in…

The production, application, and/or measurement of polarised X-/gamma rays are key to the fields of synchrotron science and X-/gamma-ray astronomy. The design, development and optimisation of experimental equipment utilised in these fields…

Computational Physics · Physics 2021-07-28 Jeremy M. C. Brown , Matthew R. Dimmock

The small energy exchange via nucleon recoils in neutrino-nucleon scattering is now supposed to be one of the important factors for successful explosion of core-collapse supernovae (CCSNe) as they can change neutrino spectra through…

High Energy Astrophysical Phenomena · Physics 2020-07-08 Chinami Kato , Hiroki Nagakura , Yusuke Hori , Shoichi Yamada

The construction of the European Spallation Source (ESS) faces many challenges from the neutron beam transport point of view: The spallation source is specified as being driven by a 5 MW beam of protons, each with 2 GeV energy, and yet the…

Instrumentation and Detectors · Physics 2015-10-02 C. Zendler , D. Martin Rodriguez , P. M. Bentley

Radiation transport simulations were used to analyse neutron imaging with the current-biased kinetic inductance detector (CB-KID). The PHITS Monte Carlo code was applied for simulating neutron, $^{4}$He, $^{7}$Li, photon and electron…

Instrumentation and Detectors · Physics 2019-12-05 Alex Malins , Masahiko Machida , The Dang Vu , Kazuya Aizawa , Takekazu Ishida

Neutron transport along guides is governed by the Liouville theorem and the technology involved has advanced in recent decades. Computer simulations have proven to be useful tools in the design and conception of neutron guide systems in…

The European Spallation Source ESS is being constructed in Lund, Sweden, to be the world's brightest cold pulsed spallation neutron source. The facility uses a 2GeV proton beam hitting a target to produce neutrons. The neutrons are then…

Instrumentation and Detectors · Physics 2022-09-26 V. Santoro , K. H Andersen , A. Khaplanov , R. Kolevatov , O. Gonzalez , F. Gruenauer , M. Magan , T. H. Randriamalala

The European Spallation Source is being constructed in Lund, Sweden and is planned to be the world's brightest pulsed spallation neutron source for cold and thermal neutron beams ($\le$ 1 eV). The facility uses a 2 GeV proton beam to…

Instrumentation and Detectors · Physics 2018-07-04 V. Santoro , D. D. DiJulio , S. Ansell , N. Cherkashyna , G. Muhrer , P. M. Bentley

Galactic cosmic rays undergo complex nuclear interactions with nuclei within planetary bodies that have little to no atmosphere. Radiation transport simulations are a key tool used in understanding the neutron and gamma-ray albedo coming…

Instrumentation and Methods for Astrophysics · Physics 2019-01-11 K. E. Mesick , W. C. Feldman , D. D. S. Coupland , L. C. Stonehill

Geant4 is a tool kit developed by a collaboration of physicists and computer professionals in the High Energy Physics field for simulation of the passage of particles through matter. The motivation for the development of the Beam Tools is…

High Energy Physics - Experiment · Physics 2007-05-23 V. Daniel Elvira , P. Lebrun , P. Spentzouris

The trend in neutron sciences is toward integrating compact, high-brightness moderators into new or upgraded facilities. Transporting neutrons from the source to the sample position with a phase-space distribution tailored to specific…

Instrumentation and Detectors · Physics 2025-03-07 Yaohua Liu