2025 Milestones
ELECTROMAGNETIC WORKING GROUP
Plan of activity for 2025
1) Infrastructure and general support for EM physics
- Perform regular execution and regression analysis using existing testing suites.
- Perform regular execution and regression analysis using existing testing suites.
- Maintenance of EM libraries.
- Provide parallel initialisation of EM physics.
- Provide option to enable/disable fluctuations per G4Region (ATLAS request).
- Delta assessment of R&D on GPU end of March.
2) Extended functionality of G4HepEm package
- Configuration per detector region: e.g. provide the possibility to use different MSC stepping in different detector region (as used by CMS).
- Add the missing gamma- and lepto-nuclear cross section and implement connection layer for tracks from G4HepEm to native Geant4 tracking for sampling of final state of nuclear processes.
- Implement the “general process“ like handling of the macroscopic cross sections.
- Implement the possibility of Woodcock tracking of gamma photons.
- Extend and optimize tracking algorithms per particle type.
- Validate developed library for ATLAS and CMS.
- Maintain the entire physics on GPU for AdePT GPU based EM shower simulation R&D project.
3) Developments for LHC and other HEP experiments
- Experimental validation and update of G4ChannelingFastSimModel, G4BaierKatkov and G4CoherentPairProduction models.
- Implementation of new examples of applications in oriented crystals including crystalline undulator and positron source.
- Implementation of a ML model trained on Particle-in-Cell simulations of laser-driven plasma wake field acceleration.
- Development methods for simulation of inverse Compton scattering.
- Provide an option to use EPICS-2017 data for Compton scattering.
- Validate new 5D generators for muon pair production.
- Validate 3-gamma annihilation models for different EM physics lists.
- Integration of polarization and quantum entanglement effects in cascade gammas and π0 decay gammas.
4) Updates of low-energy EM models
- New example for Microelec.
- Investigations of models mor ion-plasma stopping powers.
- Maintenance and refinement of polarised/non-polarised Compton models
5) G4-Med developments
- Validation of EM and hadronic models for medical applications.
6) Optical photon and X-ray physics
- Maintenance and optimisation of optical classes.
- Introduce model approach into Cerenkov, Scintillation, and WLS processes, which will be activated for logical volumes.
- Allow specification of border surfaces by material or logical volume.
- Implement a new Cerenkov model valid for thin materials.
- A new extended example based on publication ion Cerenkov spectrometer.
- Introduce spline fitting to the spectra inputs for optical physics.
- Complete the X-ray Bragg reflection on a cylindrical lens.
- New GammaKnife example for the latest Esprit model.
- Implement medium with photons and thermal-photon inverse Compton scattering inside TestEm16.
- Implementation of an extended example to illustrate the use of the Inverse Compton Scattering event generator.
- Implementation of X-ray refraction processes.
7) DNA physics and chemistry developments
- Improve DNA physics models for ions.
- Integrate of a new models for Li ions (UCSF team)
- Carbon ions implementation in Geant4-DNA.
- Study of optimal energy overlap between G4-DNA RPWBA and Born model.
- Development of the physics and physic-chemical stage for e- and e+ interactions with gaseous N2, O2, CO2.
- Update the chemistry module: IRT-syn model and mesoscopic model.
- Remove dependence of DNA sub-library from analysis sub-library.
- Human normal and malignant cell irradiations with different ion species in order to estimate RBE dependence on LET and valuation of DNA DSB followed as a function of post-irradiation time. Obtained results in vitro will be compared with numerical simulations.
- Implementing molecular excitation cross-section model and validation.
- Provide an example of mixed G4DNA and hadronic physics.
- Implementation of cellular oxygen chemistry in G4DNA chemistry options.
- Validation of physics list for radiation dosimetry standards in metrology field.
- Implementation of the Relativistic Option 4 electron inelastic model.
- Benchmarking simulations using the relativistic version of DNA_Option4 as inelastic with ELSEPA elastic model and comparison with Uehara elastic model.
- Benchmarking and validation of the new inelastic models for gold material within the relativistic plane wave Born approximation up to 1 MeV.
- Radio enhancement studies for gold nanoparticles with the newly developed dielectric relativistic models for gold.
- Prototype of software for the simulation of water radiolysis under multi-pulse irradiation.
- Development of the default Geant4-DNA physics constructor.