1. Proposed deliverables for 2008
J. Apostolakis
For Geant4 Steering Board*
26 Feb 2008
*expect where noted

2. 2008 releases & issues Agreed: To be decided: Issues related:
Scheduled release Dec 2008
Fixes for release 9.1 during 2008
To be decided:
Potential release in June 2008
Issues related:
Major revision of integration testing
Reduce human-effort required to run
Improve tests, checking of results
Addressing issues of repeatability, warnings, problems
To enable (even) more reliable use in production, use

3. Resources (personal view)
A number new members
Specialised knowledge (EM polarised, pre-compound/evaporation, Fritiof)
Losses of FTEs in key areas
Budget reductions, restructuring, retirement
Hadronics: parameterised/Bertini, CHIPS, validation of neutron
Integration Testing
Several ‘orphan’ areas
Where original creator has departed, and a new expert is not established or yet found
Increasing challenge!

4. Workplans and resources
The impact of a number of changes is not yet fully clear
Some have only very recently become known; others are unclear
Impact of some known changes remain to be determined or fully understood.
Thus these proposed workplans have greater uncertainty than in past years

5. Invite feedback on (relative) priority for your application area
Proposed work items
Invite feedback on (relative) priority for your application area

6. Hadronic Physics (1H 2008) First implementation of DPMJET interface
Validate INCL/ABLA cascade
Its new implementation in Geant4
Extend QMD ion-ion model to 2-3 GeV (per nucleon) interactions
New data-driven elastic process for neutrons
using ENDL neutron database (LLNL)
Tuned diffuse elastic scattering
Add JENDL high energy cross sections to G4NDL

7. Hadronic Physics (1H & 2H)
Improved modeling of coherent hadron elastic scattering
Cascades:
Use of Binary with high energy models as propagator
Implement incident kaons in Binary cascade
Correct Coulomb barrier in Bertini cascade
Upgrade cross-sections and re-design classes for Bertini
Validation revisions of pre-compound / de-excitation against TARC data
Standardize elastic cross section classes
Survey available cross section data for charge-exchange
New extended example for use of hadronic models with cross sections only

8. Hadronic Physics (2H 2008)
E, Q, S, B conserving model for nucleons and pions in RPG model
Addition of meson interactions to QMD model
Fully tuned RPG model
Code review (of C module)
Implement new capture, fission and inelastic processes for neutrons
That use ENDL data
CHIPS code review

9. ‘Standard’ EM processes
Validation and verification of EM physics
Add extra scattering comparisons - (1)
Add Bragg peak comparisons - (1)
Addition of tests on vertex detector simulation - (1)
Addition of test on LPM effect - (1)◦
Addition of tests on ion straggling - (2)
Simulation of Birks effects in different media - (1)
Review Bremsstrahlung models including LPM effect - (1)
Bremsstrahlung and e+e- pair production processes and models for pions and protons - (1)
Update to Cerenkov process: limitation of the step in G4Cerenkov when particle drops below the Cherenkov threshold - (2)
Less relevant - and needing further explanation:
- Develop of a cross-section biasing variant - (2)/(*)
- Access to cross-sections and mean-free-path - (2)/(*)

10. EM ‘Standard’ (cont.)
Implement spin precession in magnetic field for polarized processes - (2)
Introduce K-L shell X-rays in photo-electric process - (2)
Extend e+ annihilation to hadrons: add 3pi and K+K- - (2)/(*)
Add process sub-type for ‘id’- (1)
To address #1102 (id a process uniquely)
Introduce cut in range for recoil - (2)

11. EM Standard Updates to ionization processes
Simulate fluctuations per particle type - (2)
Generate drift electrons in gaseous detectors - (2)
ALICE requirement
Multiple and single scattering
Muon multiple scattering as separate process - (1)
Hadron multiple scattering coherent with hadron diffuse model - (2)
Integrate ion scattering model - (2)
Include ICRU'73 data for ion ionization - (1)

12. EM ‘Standard’: other
Provide of physics list for medical and space physics - (2)/(*)
Introduce variable density
Medical applications - (2)

13. EM Standard: Optical Optical photons physics
New extended/optical example to exhibit transmission properties of optical fibers with circular and elliptical cross section - (1)
Inclusion of Mie scattering as a new optical photon physics process - (2)
Extension to the unified surface model to have both specular and diffuse components for the transmitted photons - (2)
Implementation of a more flexible micro facet sampling method for optical surfaces - (2)
Model optical transport in a volume that has different optical treatments on different sides - (2)

14. Low-energy EM physics Implement Doppler-broadening model
according to the new Compton design - (1)
PIXE: extension of existing model to L shell (protons) and to alpha particles (1)
Implement ICRU73-based ion model - (2)
New microdosimetry models - (2)
Design iteration for improved usability
as interchangeable w.r.t. Standard Electromagnetic implementations - (2)

15. Reverse Monte Carlo Introduce RMC capability into Geant4 (1)/(2)
Implement reverse Monte Carlo method for e- dose computation
Addition of continuous processes: reverse continuous gain of energy by ionisation and Bremsstrahlung for e-, reverse multiple-scattering for e-◦
Reverse discrete processes: for e-, Bremstrahlung, Compton scattering, photo-electric effect◦
New example for rapid e- dose computation based on using reverse MC method

16. Particles, Track, Parallelism
Prototype of tables of nuclei
Review particle-change design for CPU optimization
Prototype multi-core extension of Geant4

17. Persistency Integrated GDML writer
Add support for parameterized volumes and missing properties

18. Graphics Representations
Improved support for visualization of boolean shapes
Target: ‘full’ support

19. Viz: Improve usability / ‘orthogonality’
Support capabilities in more drivers
Asymmetric scaling: (at least HepRepFile and DAWN)
Background color: (at least HepRepFile and DAWN)
Window location: (now only OGLIX and OGLSX)
2D and 3D text: (now only in DAWN and OpenGL)
Smooth shading
Control of auxiliary edges
Enhance interoperability of the different visualization drivers

20. Additional details
Per module

21. Run, event and detector response
Prototype multi-core extension of Geant4 - (2)/(*)
Introduce cylindrical mesh for command-based scoring (2)
Finalize inter-operability with parallel navigation

22. Persistency Integrated GDML writer - (1)
Complete the GDML implementation
support for parameterised volumes and missing properties - (1)
Integration stand-alone tool that aids conversion of CAD files to tessellated geometry - (1)
New module to import ASCII format detector descriptions - (2)

23. Particles & Track Prototype implementation of tables of nuclei
Increase precision for tracking in time
Re-design particle-change for parallel world navigation
Review particle-change design for CPU optimization

24. Tracking Redesign and implement Selective Verbosity (1)/(2)
Investigate requirements on interaction snapshot and adding touchable to secondaries

25. Graphics Representations
Improved support for visualization of boolean shapes
Target: ‘full’ support

26. Viz: Improve usability / ‘orthogonality’
Support capabilities in more drivers
Asymmetric scaling: (at least HepRepFile and DAWN)
Background color: (at least HepRepFile and DAWN)
Window location: (now only OGLIX and OGLSX)
2D and 3D text: (now only in DAWN and OpenGL)
Smooth shading
Control of auxiliary edges
Enhance interoperability of the different visualization drivers

27. Visualisation abilities
Filter geometry according to attributes
Additional trajectory models and filters
Capture and handle Ctrl-C
to return to idle prompt during visualization
Extend 2D drawing capabilities
And label trajectories or hits with attributes
Integrated visualization of field lines
Improved visualization tools for voxel geometries
Potentially for 1H or 1H/2H

28. Visualization Support dynamic loading of visualization drivers
Complete immediate mode for HepRep browsers
such as HepRApp or FRED
OpenGL driver that makes PS
without any graphics window
Create converter
HepRepFile to DAWNFile, and vice-versa
Web-based DAWN rendering service
Hierarchical VRML (rather than current flat VRML)

29. Geometry Review usage of safety on exiting surfaces in navigator - (1)
Code review for selected CGS shapes - (1)
Revision of use of angular/radial tolerances in CSG solids - (1)
Field performance evaluation and tuning/benchmark - (1)/(2)
Extension of G4Region to local magnetic fields - (2)
Code review for magnetic field classes - (2)
Enhance interoperability of multiple navigators/geometries - (2)
Roughly time ordered: feedback invited

30. User and Category Interfaces
New interface to Qt - (1)
GUI widgets modules using Tkinter for general use and update of Geant4Py examples
Geant4 Web Service framework based on Geant4Py and CherryPy