Geant4 v9.3p01

Concluding remarks

Makoto Asai

On behalf of the SLAC Geant4 team

Contents

• Highlights of Geant4 version 9.3• Following up• SLAC Geant4 team

Geant4 v9.3p01

Highlights of Geant4 version 9.3--- released on December 18th, 2009

ICRU-73

• Implemented migration of ICRU-73 stopping power classes for materials to the

G4VIonDEDXTable interface

– Access methods of physics vectors have changed (vectors can also be

identified via atomic number of material if material is pure)

– Classes now deliver mass stopping powers instead of stopping powers per

unit length

– Removed dependency on ICRU-73 material densities

– New utility class G4ExtDEDXTable to handle external electronic stopping

power tables for ions

EM physics• Standard EM models

– New Goudsmit-Saunderson multiple scattering model for electrons & positrons (e-/e+)

– Gamma conversion with LPM effect– Addition of muon multiple-scattering model in Physics Lists– Physics lists with combinations of standard and low-energy models– Introduction of cut in range for recoil

• Optical processes

– Inclusion of Mie scattering as a new optical photon physics  process

– Extension to the unified surface model to have both specular and diffuse components for the transmitted photons

– New extended/optical example to exhibit transmission properties of optical fibers with circular and elliptical cross section

• Low-energy EM

– Complete migration to ‘standard-EM’ design: added Bremsstrahlung physics according to Penelope and Livermore models; added G4LivermoreIonisationModel, first implementation of low-energy ionisation (G4LowEnergyIonisation) in the common design

– New DNA processes migrated to the new design; new G4EMLOW-6.5 data set; made obsolete old cross-sections and final-state classes

Hadronics• Models

– Developments in CHIPS model to extend its applicability to all energies, particles and targets

– Model precise sampling and ‘on-the-fly’ table preparation for coherent_elastic module

– Complete improvements to pre-compound model– Allow carbon-ion projectiles in INCL model

• Physics lists– New development physics-lists

• QGSC_CHIPS (QGS model with ‘EnergyFlow’ interface to CHIPS at all energies)

– Interim QGSC_QGSC (QGS model with interface to CHIPS at all energies, still using LHEP for neutrons)

• QGSP_FTFP_BERT ( replaces LEP with FTFP for nucleon & pion projectiles)

• CHIPS physics list ( completely replaces LEP, also for hyperons)– New physics-lists with special EM options (EMV, EMX, EMY)– Complete and validate INCL/ABLA physics list

gMocrenGreat tool available for volume visualization

• From JST/CREST project (Japan) to improve Geant4 for medical physics

• Able to visualize:

– Volume data(including overlay of more than one set)

– Trajectories

– Geometry

• Runs on:

– Windows and Linux

– Mac will likely happen soon

– Based on a commercial package butoffered freely to all Geant4 users

– http://geant4.kek.jp/gMocren

– Installation is straightforward, follow the Download link on the above page

• First run gMocren’s one-click installer

• Then, inside C:\Program Files\gMocren\gtk, you will find the one-click installer for gtk

http://geant4.kek.jp/gMocren/

Calculated dose Calculated dose distributiondistribution

color mapping

contour plot

Particle trajectoriesParticle trajectories

Opacity curve and color map Opacity curve and color map editoreditor

free hand or templates with WW&WL editing

Supported system : - Windows 2k/XP or PC Linux OS - Pentium 4 or faster - more than 1 GB (recommend)

Supported system : - Windows 2k/XP or PC Linux OS - Pentium 4 or faster - more than 1 GB (recommend)

3D (ray casting) 2D (MPR)

Opacity curve and color map editor

gMocren and utility software are freely available. gMocren and utility software are freely available.

Functionality Functionality Requirements Requirements ::

•To visualize- the modality image used by the

simulation,- the calculated dose distribution and- the particle trajectories- in an agreeable speed•Transfer function editor•Multi-platform

•To visualize- the modality image used by the

simulation,- the calculated dose distribution and- the particle trajectories- in an agreeable speed•Transfer function editor•Multi-platform

Trajectory information in the simulation is available.

gMocren : A Visualization ToolgMocren : A Visualization Tool

Platforms supported for 9.3

• Linux SL(C)5, gcc-4.1.2, gcc-4.3.X, 32/64 bits• Linux SL(C)4, gcc-3.4.6, 32/64 bits• MacOSX 10.5/10.6, gcc-4.0.1/gcc-4.2.1• Windows/XP and CygWin Tools

– Compiler Visual C++ 9.0 (Visual Studio 2008)

• Also tested: gcc-4.4.X, icc-11.X

17 October 2009

Geant4 v9.3p01

Following up

Following up - 1• Please keep maintaining your Geant4 installation updated.

– Irregular patch releases may be more important than regular releases.

– Check our web page regularly to find release news, or register to Geant4 announcement mailing list

Following up - 2• If you have a question

1. Look for our documents.

• Users guides, Twiki pages, tips pages, examples and their READMEs

2. Post your question on Geant4 HyperNews

http://hypernews.slac.stanford.edu/HyperNews/geant4/cindex

• Please make sure to do a bit of survey that no one has already asked the same question before.

3. As the final method, write us a mail.

• Avoid anonymous mail account such as hotmail, gmail, etc., if possible.

• Mention you attended SLAC Geant4 tutorial 2009.

4. Or, catch us at meetings/conferences.

• Apologies if we cannot recognize you…

Following up - 3• Near-future events

– For space users• Geant4 space users workshop

– Aug. 18-20, 2010 @ Seattle– For medical users

• G4NAMU annual meeting– @AAPM meeting, Jul. 18-22, 2010 @ Philadelphia

– For general users• MC2010 Conference

– Oct. 2010 @ Tokyo• IEEE/NSS Conference

– Oct. 2010 @ Knoxville, TN

The SLAC Geant4 team

• Covers most of the Geant4 categories

• Is happy to organize Geant4 tutorial– At SLAC or

preferably at your place

• Is happy to collaborate with you !!

Geant4 v9.3p01

Thank you for your participation!!