1. Highlights of users applications
To provide you some ideas how Geant4 would be utilized…

2. High Energy Physics

3. BaBar
BaBar
BaBar at SLAC is the pioneer experiment in HEP in use of Geant4
Started in 2000
Simulated 5*109 events so far
Produced at 20 sites in North America and Europe
Current average production rate 6.1 x 107 events/week
Now simulating PEP beam line as well (-9m < zIP < 9m)
Courtesy of D.Wright (SLAC)

4. LHC

5. ATLAS

6. LHCb

7. CMS

8. CMS

9. Boulby Mine dark matter search Prototype Simulation
Courtesy of H. Araujo, A. Howard, IC London
LXe
GXe
PMT
mirror
source
One High Energy event

10. Beam ray-tracing

11. Geant4 for beam transportation
Courtesy of V.D.Elvira (FNAL)

12. Courtesy of G.Blair (CERN)

13. Sub-micron raytracing @ CENBG : nanobeam line design IN2P3
3D field map
OM50 quadrupoles
DOUBLET
TRIPLET
Electrostatic deflection
4565
5100
Diaphragm
Object collimator
Diaphragm
3150
400 40 40
400
250
Image plan
Switching magnet X
90° analysis magnet
300
100
100
11°
Singletron incident beam
90°
Intermediate image 60 nm x 80 nm
Image < 50 nm FWHM
same prediction as Oxray, Zgoubi…
Object
5 µm in diameter

14. Space science

15. X-ray Multi-Mirror mission (XMM)
Launch December 1999
Perigee 7000 km
apogee km
Flight through the radiation belts
X-ray detectors (CCDs)
Telescope tube
Chandra X-ray observatory, with similar orbit, experienced unexpected degradation of CCDs
Possible effects on XMM?
Mirrors
Baffles

16.  astrophysics GLAS T AGILE conversion electron interactions
 -ray bursts
GLAST
GLAST
Typical telescope:
Tracker
Calorimeter
Anticoincidence
conversion
electron interactions
multiple scattering
 - ray production
charged particle tracking

17. MAXI
ISS Columbus
AMS
EUSO
Bepi Colombo
SWIFT
LISA
Smart-2
ACE
INTEGRAL
Astro-E2
JWST
GAIA
Herschel
Cassini
GLAST
XMM-Newton

18. ISS
Courtesy T. Ersmark, KTH Stockholm

19. Geant4 in space science X-Ray Surveys of Asteroids and Moons
ESA Space Environment & Effects Analysis Section
X-Ray Surveys of Asteroids and Moons
Cosmic rays,
jovian electrons
Solar X-rays, e, p
Geant3.21
G4 “standard”
Courtesy SOHO EIT
Geant4 low-E
Induced X-ray line emission:
indicator of target composition
(~100 m surface layer)
C, N, O line emissions included

20. Bepi Colombo: X-Ray Mineralogical Survey of Mercury
Space Environments
and Effects Section
Bepi Colombo: X-Ray Mineralogical Survey of Mercury
Alfonso Mantero, Thesis, Univ. Genova, 2002
BepiColombo
ESA cornerstone mission to Mercury
Courtesy of ESA Astrophysics

21. Planets
Planetary radiation environments
L. Desorgher, Bern U.

22. Radiation damage

23. Medical

25. GEANT4 based proton dose calculation in a clinical environment: technical aspects, strategies and challenges
H. Paganetti’s conclusions (Bordeaux, Nov 2005):
Routine use of (proton) Monte Carlo dose calculation (using GEANT4)
requires work in many different areas
of treatment head and patient modeling
requires establishing a link between
treatment planning and Monte Carlo
is being done at MGH
Harald Paganetti

26. Screen shots of gMocren
KEK

27. LIP Comparison with commercial treatment planning systems
M. C. Lopes 1, L. Peralta 2, P. Rodrigues 2, A. Trindade 2
1 IPOFG-CROC Coimbra Oncological Regional Center - 2 LIP - Lisbon
CT-simulation with a Rando phantom
Experimental data obtained with TLD LiF dosimeter
CT images used to define the geometry:
a thorax slice from a Rando anthropomorphic phantom
Agreement better than 2% between GEANT4 and TLD dosimeters
LIP

28. Hadrontherapy
KEK

29. Other

31. Educational applications
KEK+IN2P3

32. Cellular irradiation @ CENBG1 2 3
Cytoplasm
Confocal microscopy
of HaCat cell
IN2P3 3
Cellular irradiation
3 MeV alphas
Nucleus 1 2
3D high resolution phantom
Ion beam analysis with protons
(PIXE, RBS) a b
Microdosimetry
Geant4
Chemical composition
Mean dose in nucleus (Gy)
Liquid water
0.14 ± 0.02
Reference cell (ICRU)
0.32 ± 0.06
CENBG measurements
0.38 ± 0.07 c d