2026 Milestones

ELECTROMAGNETIC WORKING GROUP

Plan of activity for 2026. (1) - developments for 11.5beta (June 2026) (2) - developments for 11.5 (December 2026) (p) - permanent task (t) - long term task

1) Infrastructure and general support for EM physics

  • Perform regular execution and regression analysis. (p)
  • Maintenance of EM libraries. (p)
  • Provide parallel initialisation of EM physics. (1)
  • Restore possibility to use user stopping power tables for ions. (1)
  • EPICS-2017 gamma cross sections as an alternative in standard models. (2)

2) Extended functionality of G4HepEm package and AdePT

  • Implement several HEP related examples/tests and include into Geant4 nightly. (2)
  • Investigate the possibilities to extend G4HepEm to cover ALICE simulation. (2)
  • Investigate the possible extension by including neutron transport. (t)
  • AdePT to be a part of Geant4 nightly. (t)

3) Developments for HEP

  • Model design for X-Ray processes. (2)
  • Analysis of evolution spin polarization. (2)
  • Thermal photon/inverse Compton implementation. (2)
  • Inclusion of more crystalline materials and orientations into G4CHANNELINGDATA. (2)
  • Experimental validation and update of G4ChannelingFastSimModel, G4BaierKatkov, G4CoherentPairProduction. (2)
  • Implementation of an extended example to illustrate the use of the Inverse Compton Scattering event generator. (2)
  • Implementation of a ML model trained on Particle-in-Cell simulations of laser-driven plasma wakefield acceleration into Geant4 as a particle source. (t)
  • Developments of high-order QED corrections to bremsstrahlung. (t)
  • Complete the list of next to leading order EM models. (t)

4) Updates of low-energy EM models

  • Ion stopping power in plasma. (1)
  • Developments of plasma physics. (p)
  • Benchmarking particle therapy applications. (p)
  • Validation of three-gamma annihilation of positrons. (2)
  • Verification of the accuracy of the adjoint for space applications. (2)
  • Validation MicroElec model for low-energy protons ionisation. (2)
  • Improvements of material handling. (2)
  • Extension of the MicroElec database. (2)

5) Optical photon and X-ray physics

  • Maintenance and optimisation of optical classes. (p)
  • Refactor quasi-scintillation and quasi-Cherenkov processes to support offloading of optical photon transport. (2)
  • Introduce model approach into Scintillation and WLS processes. (2)
  • Introduce new model for reflection from multilayer surfaces. (2)

6) DNA physics and chemistry developments

  • Testing of monthly reference tags (p)
  • Verification & validation of Geant4-DNA chemistry (p)
  • Radio enhancement studies for gold nanoparticle (p)
  • Extend the DNA geometries (p)
  • DNA double-strand break kinetics and repair pathways (p)
  • Implementing molecular excitation cross-section model (1)
  • Update model interface for O2, N2, CO2 models of ionisation, excitation and elastic scattering. (1)
  • Addition and improvement, verification and validation of Geant4-DNA physics models for liquid water (electrons, ions) and other materials. (2)
  • Revision of Geant4-DNA physics constructors. (2)
  • Plasmid DNA damage with MolecularDNA example. (2)
  • Implementation of cellular oxygen chemistry in Geant4-DNA. (2)
  • Implementation of Li and C cross sections in Geant4-DNA. (2)