Plan2017

ELECTROMAGNETIC WORKING GROUP 
plan of activity for 2017
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(1) - June 2017
(2) - December 2017
(*) - will be done if manpower will be identified
[LE] - in collaboration with the Low-energy EM working group

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1) Infrastructure and general support for EM physics for LHC
- perform regular execution and regression analysis using existing
testing suites (1/2)
- Addition of CMS HGCAL testbeam into testing suite (1/2)
- ATLAS tilecal problem (1/2) *
- ATLAS EM shower shape (1/2) *
- addition of CALICE calorimeter to testing suite (1/2) *

2) Infrastructure and general support for new HEP facilities
- Evaluation or usage of Geant4 rare processes for muon backgrounds
for CLIC and R&D studies for FCC (1/2)
- Extention of Synchrotron radiation process simulation for FCC
(angular distribution, X-ray reflection) (1/2)
- Evaluation on existing models and R&D on possible new for
search of particles beyond the Standard Model (1/2)
- Study on effect of high energy muon scattering due to high energy
radiative processes (1)

3) Validation and verification of EM physics
- Extended testing suite - migration to cmake, to Geant4 internal
analysis software, and migration to MT where possible (1/2)
- Migration of testing suite to ROOT6 and out of afs (1/2) *
- continue detailed comparison of Standard, Livermore,
Penelope, and DNA models [LE] (1/2)
- migration of EM and medical examples to multi-threading (1/2)

4) Further development of the processes of multiple and single scattering:
- further development of the Goudsmit-Saunderson model (1)
- introduce relativistic corrections to WVI and SS models (1)
- evaluate WVI performance with 2nd order corrections enabled (2)
- study on of the displacement beyond boundary algorithm (1) (*)

5) Further update of ionization processes:
- review model for sampling fluctuations of e+- (1/2)
- refinement of effective ion charge approach (2) (*)
- alternative ion ionisation models for moderate energies (2) (*)

6) Bremsstrahlung and gamma models:
- incorporation of the three gamma annihilation (1)
- review and improvement of Seltzer-Berger model (1)
- introduce bremsstrahlung on atomic electrons at high and
moderate energies [LE] (1/2)
- validation and improvement of the gamma conversion models including cross
section and final state generation in the full energy range [LE] (1/2)
- migration to the recent data for atomic shells (1) [LE] (*)
- introduce direction splitting for bremsstrahlung (2)
- switch EM models to the recent data on atomic shells (1/2) (*)
- update Compton scattering model adding radiative corrections (2) (*)

7) Optical photon physics
- Extension to the unified surface model to have both specular and
diffuse components for the transmitted photons (2)
- Modeling of optical transport in a volume that has different optical
treatments on different sides (2)