ELECTROMAGNETIC WORKING GROUP 
                plan of activity for 2012
        =======================================

(1)  - June 2012
(2)  - December 2012
[LE] - in collaboration with the Low-energy EM working group 

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1) LHC experiments support
   - EM shower shape - ATLAS and CMS (1/2)
   - Energy deposition in tracking detectors - ALICE (1/2)
   - Multiple and single scattering - LHCb (1/2)

2) R&D study on multi-threading and vectorized simulation for EM physics (1/2)
  
3) Validation and verification of EM physics:
   - perform regular execution and regresion analysis using existing 
     testing suites (1/2)
   - continue detailed comparison of Standard, Livermore and 
         Penelope models [LE] (1/2)
   - adding ILC (including CALICE) calorimeter tests (2) 
   - adding extra benchmark for bremsstrahlung (2) 
   - improved CPU benchmarking (1/2) 

4) EM infrastructure update:
   - improved interface to angular generator (1)
   - reduce initialisation time and memory for muons (1)
   - move initialisation of tables for multiple scattering from process
     to model, introduce base material approach for multiple scattering (1)

5) Further update of ionization processes:
   - review and improvements for fluctuation models (1/2)

6) Further development of the processes of multiple and single scattering:
   - further development of WentzelVI model (1) 
   - further development of Goudsmit-Saunderson model (1) 
   - review and improved interaction between Transportation
     and Multiple scattering including lateral displacement   
     and step limitation (1/2)
   - hadron multiple scattering coherent with hadron diffuse model (2)  

7) Bremsstrahlung and gamma-conversion models:
   - introduce parameterisation of Seltzer-Berger cross sections instead 
       of data table (1/2)
   - improved parameterisation for positron cross section (2)
   - improved angular generator (1/2)
   - updated gamma-conversion model at low-energies [LE](2)

8) Improvements in high energy processes
   - migration of mu+mu- production to model design(2)
   - improved angular generator for synchrotron radiation (1)
   - review of the model of e+e- pair production (1)

9) Optical photon physics
   - Extension to the unified surface model to have both specular and 
     diffuse components for the transmitted photons (1)
   - Modeling of optical transport in a volume that has different optical 
     treatments on different sides (2)

10) Shopping list for work items for which no manpower assigned

   Infrastructure:
   - provide range computations in G4EmCalculator 
   - improved ion stopping in G4EmCalculator 
   Validation/examples:
   - adding test on fluctuation of energy loss at moderate energies
   - improve and extend validation of shower shape 
   - adding extra automatic tests on hadron scattering 
   - new validation of EM showers in light media (air, ice)
   - new validation for muon cooling simulations
   - improve validation of energy loss fluctuations
   - providing example for ultra-relativistic gamma-conversion model 
   New/improved models: 
   - improved X-rays fluorescence sampling in photo-electric model 
   - improved Compton scattering model with Doppler broading 
   New optical features: 
   - Implementation of a more flexible micro facet sampling method 
     for optical surfaces
   - Extend some of the boundary process implementation to X-rays