1. 24 July 2005 G4NAMU AAPM 2005 J. Perl 1 G4NAMU at AAPM Seattle 2005 Joseph Perl, SLAC

2. 24 July 2005 2G4NAMU AAPM 2005 J. PerlAgenda 1. Welcome and self-introductions - everyone (15 mins) 1. Welcome and self-introductions - everyone (15 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) Why, what and how G4NAMU Why, what and how G4NAMU G4NAMU within the World Geant4 Collaboration G4NAMU within the World Geant4 Collaboration 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 6. General Discussion (30 mins) 6. General Discussion (30 mins) 7. Socializing and informal discussions - (40 mins) 7. Socializing and informal discussions - (40 mins) Break-out sessions along topics 3, 4 and 5 above Break-out sessions along topics 3, 4 and 5 above 8. Summary (20 mins) 8. Summary (20 mins) Informal reports from the break-out sessions Informal reports from the break-out sessions 9. Next Steps - Joseph Perl (5 mins) 9. Next Steps - Joseph Perl (5 mins)

3. 24 July 2005 3G4NAMU AAPM 2005 J. Perl Thanks Thanks to AAPM for letting us arrange this side meeting on such short notice Thanks to AAPM for letting us arrange this side meeting on such short notice Thanks to University of Pennsylvania (Stephen Avery) for covering the cost of our meeting room today Thanks to University of Pennsylvania (Stephen Avery) for covering the cost of our meeting room today Today’s agenda was worked out by an ad-hoc subcommittee: Stephen Avery, Paul Gueye, Harald Paganetti, Joseph Perl Today’s agenda was worked out by an ad-hoc subcommittee: Stephen Avery, Paul Gueye, Harald Paganetti, Joseph Perl

4. 24 July 2005 4G4NAMU AAPM 2005 J. Perl Self-Introductions So we can all begin to associate names with faces, please tell us: So we can all begin to associate names with faces, please tell us: Name Name Affiliation Affiliation Topic Area (beam therapy, brachytherapy, imaging, etc.) Topic Area (beam therapy, brachytherapy, imaging, etc.)

5. 24 July 2005 5G4NAMU AAPM 2005 J. PerlAgenda 1. Welcome and self-introductions - everyone (15 mins) 1. Welcome and self-introductions - everyone (15 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) Why, what and how G4NAMU Why, what and how G4NAMU G4NAMU within the World Geant4 Collaboration G4NAMU within the World Geant4 Collaboration 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 6. General Discussion (30 mins) 6. General Discussion (30 mins) 7. Socializing and informal discussions - (40 mins) 7. Socializing and informal discussions - (40 mins) Break-out sessions along topics 3, 4 and 5 above Break-out sessions along topics 3, 4 and 5 above 8. Summary (20 mins) 8. Summary (20 mins) Informal reports from the break-out sessions Informal reports from the break-out sessions 9. Next Steps - Joseph Perl (5 mins) 9. Next Steps - Joseph Perl (5 mins)

6. 24 July 2005 G4NAMU AAPM 2005 J. Perl 6 What is G4NAMU? G4NAMU – the Geant4 North America Medical Users Organization Launched in May of 2005 to provide a meeting place for the rapidly growing Geant4 medical user community of North America. Up to now, we’ve just said the purpose of G4NAMU is to bring this community together to share issues and advice, to develop regional collaboration and to communicate as a group to the Geant4 developers. Part of our goal for our discussions today is to extend or refine this statement of purpose.

7. 24 July 2005 G4NAMU AAPM 2005 J. Perl 7 Who is G4NAMU? G4NAMU's current membership includes 44 members from 20 institutions throughout Canada and the United States. Current subscribers to the mailing list (page 1 of 2): SLAC: Joseph Perl, Makoto Asai SLAC: Joseph Perl, Makoto Asai Harvard & Mass General: Harald Paganetti, Xing-Qi Lu, Roelf L. Slopsema Harvard & Mass General: Harald Paganetti, Xing-Qi Lu, Roelf L. Slopsema UCSF: Bruce Faddegon UCSF: Bruce Faddegon ULaval: Jean-François Carrier, Luc Beaulieu, Louis Archambault, Vincent Hubert Tremblay ULaval: Jean-François Carrier, Luc Beaulieu, Louis Archambault, Vincent Hubert Tremblay UPenn: Steven Avery, Dickson Goulart, Jim McDonough UPenn: Steven Avery, Dickson Goulart, Jim McDonough Stanford: Todd Pawlicki, Gary Luxton, Lei Xing Stanford: Todd Pawlicki, Gary Luxton, Lei Xing Louisiana State University: Blair Smith Louisiana State University: Blair Smith Fox Chase: Charlie Ma, Jiajin Fan Fox Chase: Charlie Ma, Jiajin Fan McGill: Emily Poon, Frank Verhaegen, Jan Seuntjens McGill: Emily Poon, Frank Verhaegen, Jan Seuntjens Continued on next slide… Continued on next slide…

8. 24 July 2005 G4NAMU AAPM 2005 J. Perl 8 Who is G4NAMU? (continued) Current subscribers to the mailing list (continued): Triumf: Peter Gumplinger, Frederick Jones Triumf: Peter Gumplinger, Frederick Jones Memorial Sloan-Kettering: C. Ross Schmidtlein, Assen Kirov, Sadek Nehmeh Memorial Sloan-Kettering: C. Ross Schmidtlein, Assen Kirov, Sadek Nehmeh Johns Hopkins: Jingyan Xu Johns Hopkins: Jingyan Xu University of Arkansas: Hongyu Jiang University of Arkansas: Hongyu Jiang Jefferson Lab: Paul Gueye, Stan Majewski, Mark Smith, David Hamlette, Michael Epps, Marion MacCormic Jefferson Lab: Paul Gueye, Stan Majewski, Mark Smith, David Hamlette, Michael Epps, Marion MacCormic Advanced Laser Light Source: Jean-Claude Kieffer, Jean-Philippe Moreau Advanced Laser Light Source: Jean-Claude Kieffer, Jean-Philippe Moreau University of Wisconsin – Madison: Hazim A Jaradat University of Wisconsin – Madison: Hazim A Jaradat INRS: Francois Vidal, Sylvain Fourmaux, Ludovic Lecherbourg, Rémy Toth INRS: Francois Vidal, Sylvain Fourmaux, Ludovic Lecherbourg, Rémy Toth Université de Sherbrooke: Daniel Houde Université de Sherbrooke: Daniel Houde University of Alberta: Robert Fedosejev, Craig Unick University of Alberta: Robert Fedosejev, Craig Unick United States Army Medical Department: Dan Fry United States Army Medical Department: Dan Fry

9. 24 July 2005 9G4NAMU AAPM 2005 J. Perl G4NAMU within the World Geant4 Collaboration Of course all Geant4 users are part of a world wide community. Of course all Geant4 users are part of a world wide community. Medical Applications forum and other user forums are available for discussion and exchange, as well as other Geant4 workshops and meetings. Medical Applications forum and other user forums are available for discussion and exchange, as well as other Geant4 workshops and meetings. But regional efforts also have a role. But regional efforts also have a role. In Europe, some efforts are being organized through Maria Grazia Pia of INFN, Italy (beam, brachy, GATE) In Europe, some efforts are being organized through Maria Grazia Pia of INFN, Italy (beam, brachy, GATE) In Japan, some efforts are being organized through Takashi Sasaki of KEK (including carbon beams, parallel computing) In Japan, some efforts are being organized through Takashi Sasaki of KEK (including carbon beams, parallel computing) In North America, there has been no similar effort at regional organization In North America, there has been no similar effort at regional organization See, for example, the list of speakers for an upcoming Geant4 Symposium at Villa Olmo See, for example, the list of speakers for an upcoming Geant4 Symposium at Villa Olmo Actually, we can arrange to have a few G4NAMU slides included here

10. 24 July 2005 10G4NAMU AAPM 2005 J. Perl G4NAMU as Regional Voice G4NAMU can serve as voice of the North American Geant4 Medical User community G4NAMU can serve as voice of the North American Geant4 Medical User community Organize regional workshops or tutorials Organize regional workshops or tutorials Foster nearby collaborations Foster nearby collaborations Speak with a collective voice to regional funding agencies Speak with a collective voice to regional funding agencies Meet regional certification needs Meet regional certification needs At its meeting last month in San Diego, the American Nuclear Society (ANS) recognized the formation of a Computational Medical Physics Working Group (CMPWG). CMPWG will be hosted by three divisions of ANS - Mathematics and Computations (M&C), Biology and Medicine (BMD), Radiation Protection and Shielding (RPSD). At its meeting last month in San Diego, the American Nuclear Society (ANS) recognized the formation of a Computational Medical Physics Working Group (CMPWG). CMPWG will be hosted by three divisions of ANS - Mathematics and Computations (M&C), Biology and Medicine (BMD), Radiation Protection and Shielding (RPSD). CMPWG may become involved in benchmarking codes for Medical Physics applications. CMPWG may become involved in benchmarking codes for Medical Physics applications.

11. 24 July 2005 11G4NAMU AAPM 2005 J. Perl How Should G4NAMU Work? We've agreed to use a mailing list. We've agreed to use a mailing list. geant4-namu@slac.stanford.edu geant4-namu@slac.stanford.edu geant4-namu@slac.stanford.edu The list is lightly moderated just to maintain focus and prevent spam. The list is lightly moderated just to maintain focus and prevent spam. To join the list, send mail to perl@slac.stanford.edu. To join the list, send mail to perl@slac.stanford.edu. We will have periodic meetings and will try, as we have today, to take advantage of existing meetings. We will have periodic meetings and will try, as we have today, to take advantage of existing meetings. We can go beyond this: We can go beyond this: Provide workshops or tutorials Provide workshops or tutorials Develop additional Geant4 examples Develop additional Geant4 examples Certify certain parts of the code for use in our communities Certify certain parts of the code for use in our communities Collect requirements for Geant4 developers Collect requirements for Geant4 developers We’ll start discussing these functions of G4NAMU here today. We’ll start discussing these functions of G4NAMU here today.

12. 24 July 2005 12G4NAMU AAPM 2005 J. Perl Where Does SLAC Fit into G4NAMU Three of us are from the SLAC Geant4 group (Asai, Wright, Perl) Three of us are from the SLAC Geant4 group (Asai, Wright, Perl) Largest center of Geant4 development outside of CERN Largest center of Geant4 development outside of CERN Expertise in essentially all areas of Geant4 Expertise in essentially all areas of Geant4 Three seats on the Geant4 technical steering board Three seats on the Geant4 technical steering board Our laboratory and university strongly support our involvement with the medical physics community Our laboratory and university strongly support our involvement with the medical physics community From SLAC, we’ve set up the mailing list, and we’ve started an initial G4NAMU web site: From SLAC, we’ve set up the mailing list, and we’ve started an initial G4NAMU web site: http://geant4.slac.stanford.edu/g4namu/ http://geant4.slac.stanford.edu/g4namu/ http://geant4.slac.stanford.edu/g4namu/ Extremely boring page at present. Content welcome! Extremely boring page at present. Content welcome! I would be happy to serve as maintainer of a formal G4NAMU requirements list that would give input to the Geant4 developers I would be happy to serve as maintainer of a formal G4NAMU requirements list that would give input to the Geant4 developers While the SLAC group are happy to contribute in this way, we understand that we are just one member of this new community. G4NAMU must be a consensus organization that evolves as needed by its members. While the SLAC group are happy to contribute in this way, we understand that we are just one member of this new community. G4NAMU must be a consensus organization that evolves as needed by its members.

13. 24 July 2005 13G4NAMU AAPM 2005 J. PerlAgenda 1. Welcome and self-introductions - everyone (15 mins) 1. Welcome and self-introductions - everyone (15 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) Why, what and how G4NAMU Why, what and how G4NAMU G4NAMU within the World Geant4 Collaboration G4NAMU within the World Geant4 Collaboration 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 6. General Discussion (30 mins) 6. General Discussion (30 mins) 7. Socializing and informal discussions - (40 mins) 7. Socializing and informal discussions - (40 mins) Break-out sessions along topics 3, 4 and 5 above Break-out sessions along topics 3, 4 and 5 above 8. Summary (20 mins) 8. Summary (20 mins) Informal reports from the break-out sessions Informal reports from the break-out sessions 9. Next Steps - Joseph Perl (5 mins) 9. Next Steps - Joseph Perl (5 mins)

14. 24 July 2005 14G4NAMU AAPM 2005 J. PerlAgenda 1. Welcome and self-introductions - everyone (15 mins) 1. Welcome and self-introductions - everyone (15 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) Why, what and how G4NAMU Why, what and how G4NAMU G4NAMU within the World Geant4 Collaboration G4NAMU within the World Geant4 Collaboration 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 6. General Discussion (30 mins) 6. General Discussion (30 mins) 7. Socializing and informal discussions - (40 mins) 7. Socializing and informal discussions - (40 mins) Break-out sessions along topics 3, 4 and 5 above Break-out sessions along topics 3, 4 and 5 above 8. Summary (20 mins) 8. Summary (20 mins) Informal reports from the break-out sessions Informal reports from the break-out sessions 9. Next Steps - Joseph Perl (5 mins) 9. Next Steps - Joseph Perl (5 mins)

15. 24 July 2005 15G4NAMU AAPM 2005 J. Perl General Discussion What do you want G4NAMU to do? What do you want G4NAMU to do? How shall we organize ourselves? How shall we organize ourselves? Some milestones to keep in mind: Some milestones to keep in mind: October 20: Villa Olmo Conference, Como, Italy, “Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications”, Geant4 Symposium October 20: Villa Olmo Conference, Como, Italy, “Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications”, Geant4 Symposium http://villaolmo.mib.infn.it/Conference2005.html http://villaolmo.mib.infn.it/Conference2005.html http://villaolmo.mib.infn.it/Conference2005.html We could provide a few slides for the Geant4 Medical talk. We could provide a few slides for the Geant4 Medical talk. October 23-29: IEEE NIS-MIC, San Juan, Puerto Rico October 23-29: IEEE NIS-MIC, San Juan, Puerto Rico http://www.nss-mic.org/2005/nss2005.html http://www.nss-mic.org/2005/nss2005.html http://www.nss-mic.org/2005/nss2005.html Should we organize a G4NAMU side meeting? Should we organize a G4NAMU side meeting? November 3-10: Geant4 International Conference, Bordeaux, France, November 3-10: Geant4 International Conference, Bordeaux, France, http://geant4.in2p3.fr/2005/ http://geant4.in2p3.fr/2005/ http://geant4.in2p3.fr/2005/ Agenda is still open. A G4NAMU talk would be appropriate. Agenda is still open. A G4NAMU talk would be appropriate.

16. 24 July 2005 16G4NAMU AAPM 2005 J. PerlAgenda 1. Welcome and self-introductions - everyone (15 mins) 1. Welcome and self-introductions - everyone (15 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) Why, what and how G4NAMU Why, what and how G4NAMU G4NAMU within the World Geant4 Collaboration G4NAMU within the World Geant4 Collaboration 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 6. General Discussion (30 mins) 6. General Discussion (30 mins) 7. Socializing and informal discussions - (40 mins) 7. Socializing and informal discussions - (40 mins) Break-out sessions along topics 3, 4 and 5 above Break-out sessions along topics 3, 4 and 5 above 8. Summary (20 mins) 8. Summary (20 mins) Informal reports from the break-out sessions Informal reports from the break-out sessions 9. Next Steps - Joseph Perl (5 mins) 9. Next Steps - Joseph Perl (5 mins)

17. 24 July 2005 17G4NAMU AAPM 2005 J. Perl Break-out Sessions Separate areas of the room for discussion of three main topic areas Separate areas of the room for discussion of three main topic areas External Beam Therapy – See Harald External Beam Therapy – See Harald Brachytherapy – See Paul Brachytherapy – See Paul Imaging – See Assen Imaging – See Assen Meet one another Meet one another Enjoy some snacks Enjoy some snacks Collect thoughts on current hot topics and on requirements Collect thoughts on current hot topics and on requirements

18. 24 July 2005 18G4NAMU AAPM 2005 J. PerlAgenda 1. Welcome and self-introductions - everyone (15 mins) 1. Welcome and self-introductions - everyone (15 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) Why, what and how G4NAMU Why, what and how G4NAMU G4NAMU within the World Geant4 Collaboration G4NAMU within the World Geant4 Collaboration 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 6. General Discussion (30 mins) 6. General Discussion (30 mins) 7. Socializing and informal discussions - (40 mins) 7. Socializing and informal discussions - (40 mins) Break-out sessions along topics 3, 4 and 5 above Break-out sessions along topics 3, 4 and 5 above 8. Summary (20 mins) 8. Summary (20 mins) Informal reports from the break-out sessions Informal reports from the break-out sessions 9. Next Steps - Joseph Perl (5 mins) 9. Next Steps - Joseph Perl (5 mins)

19. 24 July 2005 19G4NAMU AAPM 2005 J. PerlAgenda 1. Welcome and self-introductions - everyone (15 mins) 1. Welcome and self-introductions - everyone (15 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) 2. Geant4 North America Medical Users Organization: Joseph Perl (10 mins) Why, what and how G4NAMU Why, what and how G4NAMU G4NAMU within the World Geant4 Collaboration G4NAMU within the World Geant4 Collaboration 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 3. Overview of Geant4 Use and Issues in External Beam Therapy: Harald Paganetti (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 4. Overview of Geant4 Use and Issues in Brachytherapy: Paul Gueye (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 5. Overview of Geant4 Use and Issues in Imaging (CT/PET/SPECT/GATE/other): Assen Kirov (10 mins) 6. General Discussion (30 mins) 6. General Discussion (30 mins) 7. Socializing and informal discussions - (40 mins) 7. Socializing and informal discussions - (40 mins) Break-out sessions along topics 3, 4 and 5 above Break-out sessions along topics 3, 4 and 5 above 8. Summary (20 mins) 8. Summary (20 mins) Informal reports from the break-out sessions Informal reports from the break-out sessions 9. Next Steps - Joseph Perl (5 mins) 9. Next Steps - Joseph Perl (5 mins)

20. 24 July 2005 20G4NAMU AAPM 2005 J. Perl Some Next Steps Invite colleagues to the mailing list. Invite colleagues to the mailing list. Continue discussion on the mailing list. Continue discussion on the mailing list. Develop the G4NAMU web site. Develop the G4NAMU web site. Collect requirements for Geant4 developers. Collect requirements for Geant4 developers. Think about relationship to ANS Computational Medical Physics Working Group (CMPWG). Think about relationship to ANS Computational Medical Physics Working Group (CMPWG). Think about submissions or side meetings for: Think about submissions or side meetings for: October 20: Villa Olmo Conference, Como, Italy, “Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications”, Geant4 Symposium October 20: Villa Olmo Conference, Como, Italy, “Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications”, Geant4 Symposium http://villaolmo.mib.infn.it/Conference2005.html http://villaolmo.mib.infn.it/Conference2005.html http://villaolmo.mib.infn.it/Conference2005.html October 23-29: IEEE NIS-MIC, San Juan, Puerto Rico October 23-29: IEEE NIS-MIC, San Juan, Puerto Rico http://www.nss-mic.org/2005/nss2005.html http://www.nss-mic.org/2005/nss2005.html http://www.nss-mic.org/2005/nss2005.html November 3-10: Geant4 International Conference, Bordeaux, France, November 3-10: Geant4 International Conference, Bordeaux, France, http://geant4.in2p3.fr/2005/ http://geant4.in2p3.fr/2005/ http://geant4.in2p3.fr/2005/