ELECTROMAGNETIC WORKING GROUP 
               plan of activity for 2011 
        ======================================================

(1)  - June 2011
(2)  - December 2011
(?)  - manpower not yet assigned
[LE] - in collaboration with the Low-energy EM working group
[HAD]- in collaboration with the Hadronic working group 
[GEO]- in collaboration with the Geometry and Transport working group
[MAT]- in collaboration with the Generic processes and materials working group
[!]  - part of the Collaboration goal

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  1) Validation and verification of EM physics:
       - continue detailed comparison of Standard, Livermore and 
         Penelope models [LE] (1/2)
       - adding extra automatic tests on low-energy hadron scattering 
         (?)
       - adding ILC (including CALICE) calorimeter tests (2) 
       - adding test on fluctuation of energy loss at moderate energies (?)
       - improve and extend validation web interface (?)
       - study on muon and synchrotron radiation backgrounds for 
         accelerator applications of Geant4 (2)
       - establish automatic running of the CPU benchmark (1) 
       - adding fully automatic test of ranges (?)
       - adding extra test on low-energy electron ionisation [LE] (1) 
       - CPU performance study and investigate variants to speedup LHC simulation (2)  

  2) Material category development:
       - introduce "base material" approach as a first step to variable density 
         approach [LE, MAT] (1) ! 
       - adding extra data on molecule levels [LE, MAT] (2) 
       - review and upgrade of G4SandiaTable [MAT] (2) 
       - redesign the G4MaterialPropertyVector class interfaces for G4Scintillation 
         and optical processes to employ spline interpolation to empirical input [MAT] (1) 

  3) EM infrastructure update:
       - adding interface to differential cross sections [MAT + LE] (2)
       - provide range computations inside G4EmCalculator (2)
       - Automatic treatment of process ordering parameters in physics lists (1) ! 

  4) Further update of ionization processes:
       - review and improvements for ion ionisation model for high and moderate
         energies (1)
       - providing usage of "base material" approach (1)
       - review of the PAI model implementation (2) 
       - new model of delta-electron production based on ICRU'52 data (2) 

  5) Further development of the processes of multiple and single scattering:
       - further development of WentzelVI model (1) 
       - further development of Goudsmit-Saunderson model (1) 
       - establish more effective sampling of displacement in Urban model (2) - DONE
       - hadron multiple scattering coherent with hadron diffuse model (2)  
       - review of design and implementation of the interface to geometry for
         treatment of lateral displacement [GEO] (2) 

  6) Bremsstrahlung and gamma-conversion models:
       - derive new parametrisation for Std Bremsstrahlung (below 1 GeV) using existing 
         data for all materials (1)
       - providing example for ultra-relativistic gamma-conversion model (?)
       - updated gamma-conversion model at low-energies (?)

  7) Improved implementation of photon processes
       - improved X-rays fluorescence sampling in photo-electric model (1)
       - improved Compton scattering model with Doppler broading (1) 

  8) Polarisation
       - implementation spin precession in magnetic field using Stokes vectors 
         representation (?)

  9) Improvements in high energy processes
       - migration of mu+mu- production processes to model design (?)

  10) X-ray production processes
       - Improved sampling of X-ray spectrum of Cerenkov (1)

  11) Optical photon physics
       - Extension to the unified surface model to have both specular and 
         diffuse components for the transmitted photons (?)
       - Implementation of a more flexible micro facet sampling method for 
         optical surfaces (?)
       - Extend some of the boundary process implementation to X-rays (?)
       - Modeling of optical transport in a volume that has different optical 
         treatments on different sides (?)

  12) User support, communications and publications
       - Communicate with LHC experiments and providing supports as a first priority
       - Providing support for medical and space users
       - Working with HyperNews forums 
       - Participation in international conferences and workshops
       - Providing tutorial courses
       - Providing support and perform common validation for adjoint models