Plan2015

ELECTROMAGNETIC WORKING GROUP plan of activity for 2015 =======================================

(1) - June 2015 (2) - December 2015 (*) - will be done if manpower will be identified [LE] - in collaboration with the Low-energy EM working group [GE] - in collaboration with the Geometry working group

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1) Infrastructure and general support for EM physics

• migration remaining EM and medical examples to multi-threading (1/2)
• support for LHC experiments (1/2)
• improve computation of range and energy loss in G4EmCalculator (2)

2) Validation and verification of EM physics

• perform regular execution and regression analysis using existing testing suites (1/2)
• Extended testing suite validation capabilities (develope new web interface, improve regression tests, evaluate usage of Jenkins) (1/2)
• continue detailed comparison of Standard, Livermore, Penelope, and DNA models [LE] (1/2)
• extend backscattering tests in the testing suite (2) [LE]
• migration of testing suite to multi-threading (1/2) (*)
• add CALICE calorimeter tests, focusing on lateral shape (2) (*)
• add Cerenkov calorimeter test (2) (*)
• add bremsstrahlung benchmark (2) (*)
• development of electron line-shape test in sampling calorimeter (2) (*)

3) Further development of the processes of multiple and single scattering:

• review and fix of the displacement beyond boundary algorithm (1) [GE]
• review and fix of the Goudsmit-Saunderson model (1)
• study and improve sampling of lateral displacement and backscattering (1)
• study and single scattering models for high enegry projectiles (2)
• evaluate WentzelVI model performance with 2nd order corrections enabled (2)

4) Further update of ionization processes:

• study of EM physics for proton and light ion therapy versus new experimental data (1/2)
• refinement of effective ion charge approach (2) (*)
• alternative ion ionisation models for moderate energies (2) (*)

5) Bremsstrahlung and gamma models:

• incorporation of the three gamma annihilation (2)
• improved parameterisation for positron cross section (2) (*)
• update Compton scattering model adding radiative corrections (2) (*)
• feasibility study on improved secondary generation at high energy for e+e- pair production by e- and e+ (2) (*)

6) Evaluation of PAI and XTR models for ALICE (1/2)

7) High energy processes

• Evaluation or usage of Geant4 rare processes for muon backgrounds for CLIC and R&D studies for FCC
• extention of grid of internal table for mu-nuclear

8) 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)