ELECTROMAGNETIC WORKING GROUP 
        plan of activity for 2009 and milestones for 2010-1012
        ======================================================

(1)  - June 2009
(2)  - December 2009
[LE] - in collaboration with the Low-energy EM working group
[GT] - in collaboration with the Geometry and Transport working group
[RE] - in collaboration with the Run, Event and Detector Response working group

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  1) Validation and verification of EM physics [LE]:
       - detailed comparison of Standard, Livermore and Penelope models; (1)
       - adding extra tests on ion stopping powers and straggling; (1)
       - adding tests on vertex detector simulation; (2 CERN summer student)
       - adding extra automatic tests on scattering; (2)

  2) Material category development [LE]:
       - adding extra data for ion stopping powers; (1)
       - review on ionisation potentials; (2)
       - review on density effect parameterizations; (2)
       - introduce variable density; (2)

  3) EM infrastructure update [LE]:
       - introduce general charge exchange process for ion transport; (1)
       - introduce Physics Lists with combinations of Standard and Low-energy models; (1)
       - further improvement of the spline for Physics Vectors; (2)
       - introduce "Apply Cuts" option per geometry region; (2?)
       - introduce cut in range for recoil; (2)

  4) Further update of ionization processes [LE]:
       - enable the ICRU'73 based ion ionisation model for Physics Lists; (1)
       - tuned model of fluctuations for ions; (2)

  5) Further development of the processes of multiple and single scattering [LE][GT]:
       - muon multiple scattering model development in Physics List; (1)
       - development of Goudsmit-Saunderson model; (1)
       - establish more stable and effective interface 
         to compute safety and geometry step; (2)
       - establish more effective sampling of displacement; (2)
       - hadron multiple scattering coherent with hadron diffuse model; (2)
       - feasibility study on Penelope MSC implementation; (2)

  6) Bremsstrahlung models [LE]:
       - updated model for e+- for moderate energies E < 1 GeV (1);
       - detailed comparison of Standard, Livermore and Penelope models; (1)
       - further development and validation of hadron models; (2)

  7) Ultra-relativistic models:
       - development of gamma conversion with LPM effect; (1)
       - further development and validation of hadron e+e- pair model; (2)
       - further development of positron induced hadron production; (2)

  8) Optical photon physics
       - a new extended/optical example to exhibit transmission properties; (1) 
         of optical fibers with circular and elliptical cross section (1);
       - include Mie scattering as a new optical photon physics process (2);
       - implement extension to the UNIFIED surface model to have both specular 
         and diffuse components for the transmitted photon (2);
       - implement a more flexible micro facet sampling method for optical surfaces (2);
       - model the optical transport in a volume that has different optical 
         treatments on different sides (2);
       - extend some of the boundary process implementation to X-rays; (2)
 
  9) Adjoint Monte Carlo [RE]
       - delivery of working version of reverse (adjoint) Monte Carlo for EM processes; (2)
       - provide extended example(s) for adjoint Monte Carlo; (2)

  10) Examples [RE]:
       - extended coverage of EM physics by nightly testing; (1)
       - identify examples which can migrate to Geant4 score facility; (2)

        Milestones for 2010-1012
        ========================

  11) EM infrastructure update [LE]:
       - review of atomic shell energies; 
       - extend internal DB on materials;
       - provide an option allowing to setup EM parameters via cut value; 
       - study of necessary infrastructure upgrades for effective usage 
         of multi-core processors; 

  12) Complete review of cross sections of all EM processes [LE]
       - provide user-friendly tool to access cross sections;
       - compare data from all exiting sources: theory, evaluated databases, concrete data;
       - select the most precise cross sections and have estimation of cross section
         accuracy and Geant4 model as function of projectile energy and media;
      
  13) Complete review of energy loss models [LE]
       - simulation of fluctuations per specific material in G4 database; 
       - new model of delta-electron production based on ICRU'52 data; 
       - provide user-friendly tool to access stopping powers and sampled energy loss;
       - compare data from all exiting sources: theory, evaluated databases, concrete data;
       - select the most precise stopping power and have estimation of cross section
         accuracy and Geant4 model as function of projectile energy and media;
       - developed models for the different particle type and energy for sampling fluctuations
         relevant to different use-cases;

  14) Complete review of scattering models [LE]
       - provide user-friendly tool to access elastic cross sections and scattering angles;
       - compare data from all exiting sources: theory, evaluated databases, concrete data;
       - include inside Geant4 all established algorithm to sample single and multiple scattering;

  15) Polarized processes [LE]
       - implementation spin precession in magnetic field (using Stokes
         vectors representation); 
       - continue validation of polarized processes; 
       - extend list of examples;

  16) Ultra-relativistic processes
       - introduce LPM effect into muon processes; 
       - develop model for e+e- pair production by e+-; 
       - develop models with radiation corrections;
       - extend upper limits of validity of Geant4 EM physics;

  17) X-rays processes

  18) Optical processes
       - analysis and testing of Geant4 optical processes in PbWO4
         crystals (in collaboration with CMS and ALICE experiments);

  19) Physics Lists [LE]
       - provide set of physics constructors using standard and low-energy models;
       - provide clear validation and documentation of accuracy versus CPU performance
         for established physics constructors; 
       - establish Physics Lists for specific use-cases (linear collider, 
         high energy astro-physics,..)

  20) Biasing [LE][GT][RE]
       - development of EM infrastructure for biasing of EM processes;
       - introduce forced interaction option per G4Region; 
       - extend validation software to test biasing