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Highlights of users applicationsHighlights of users applications
To provide you some ideas how Geant4 would be utilized…
High Energy PhysicsHigh Energy Physics
3
BaBarBaBar 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)
BaBar
4
LHC
5
ATLAS
6
LHCb
7
CMS
8
CMS
9
Boulby Mine Boulby Mine dark matter searchdark matter search Prototype SimulationPrototype Simulation
Courtesy of H. Araujo, A. Howard, IC London
LXe
GXe
PMT
mirror
source
One High Energy event
Dark matter
Beam ray-tracingBeam ray-tracing
11
Geant4 for Geant4 for beam transportationbeam transportation
Courtesy of V.D.Elvira (FNAL)
12Courtesy of G.Blair (CERN)
13
4565
90°
250
3150
5100
100
40
100
40
11°
300
X400 400
90° analysismagnet
Switchingmagnet
Image plan
Object collimator DiaphragmDiaphragm
Object5 µm in diameter
DOUBLET TRIPLET Electrostatic deflection
Sin
gle
tro
n in
cid
ent
bea
m
Image < 50 nm FWHMsame prediction as Oxray, Zgoubi…
Intermediate image60 nm x 80 nm
Sub-micron raytracing @ CENBG : Sub-micron raytracing @ CENBG : nanobeam line designnanobeam line design
3D field mapOM50 quadrupoles
IN2P3
Space scienceSpace science
15
Chandra X-ray observatory, with similar orbit, experienced unexpected degradation of CCDs
Possible effects on XMM?BafflesBaffles
X-ray detectorsX-ray detectors(CCDs)(CCDs)
MirrorsMirrors
Telescope tubeTelescope tube
X-ray Multi-Mirror mission (XMM) Launch December
1999 Perigee 7000 km apogee 114000 km Flight through the
radiation belts
XMM
16
astrophysicsastrophysics--ray burstsray bursts
AGILE GLAST
Typical telescope: Tracker Calorimeter Anticoincidence
conversion electron interactions multiple scattering-ray production charged particle tracking
GLAST
GLAST
GLASTAGILE
17MAXIISS Columbus AMS
EUSO
Bepi Colombo SWIFT
LISA
Smart-2
ACE
INTEGRAL
Astro-E2
JWSTGAIA
Herschel
Cassini
GLAST
XMM-Newton
18
Cou
rtes
y T
. Ers
mar
k, K
TH
Sto
ckho
lm
ISS
19
X-Ray Surveys of X-Ray Surveys of Asteroids and Asteroids and MoonsMoons
Induced X-ray line emission:indicator of target composition(~100 m surface layer)
Cosmic rays,jovian electrons
Geant3.21
G4 “standard”
Geant4 low-E
Solar X-rays, e, p
Courtesy SOHO EIT
C, N, O line emissions included
ESA Space Environment & Effects Analysis SectionGeant4 in space Geant4 in space
sciencescience
20
Bepi Colombo: X-Ray Bepi Colombo: X-Ray Mineralogical Survey of MercuryMineralogical Survey of Mercury
Alfonso Mantero, Thesis, Univ. Genova, 2002
Space Environments Space Environments and Effects Sectionand Effects Section
BepiColomboESA cornerstone mission to Mercury
Courtesy of ESA Astrophysics
BepiC
21
Planetary radiation environmentsPlanetary radiation environments
L. Desorgher, Bern U.
Planets
22
Radiation damage
MedicalMedical
24
25
Harald Paganetti
GEANT4 based proton dose calculation in a clinical environment: technical aspects, strategies and challenges
26
Screen shots of gMocrenScreen shots of gMocrenKEK
27
CT-simulation with a Rando phantomExperimental data obtained with TLD LiF dosimeter
CT images used to define the geometry:
a thorax slice from a Rando
anthropomorphic phantom
Comparison with commercial treatment planning Comparison with commercial treatment planning systemssystems
M. C. Lopes 1, L. Peralta 2, P. Rodrigues 2, A. Trindade 2
1 IPOFG-CROC Coimbra Oncological Regional Center - 2 LIP - Lisbon
Agreement better than 2% between GEANT4 and TLD dosimeters
LIP
28
HadrontherapyHadrontherapyKEK
OtherOther
30
31
Educational applicationsEducational applications
KEK+IN2P3
32
Cellular irradiation @ CENBGCellular irradiation @ CENBG
a b
c d
3
1 2
1
23
Chemical compositi
on
Mean dose in nucleus
(Gy)
Liquid water
0.14 ± 0.02
Reference cell
(ICRU)
0.32 ± 0.06
CENBG measurements
0.38 ± 0.07
Ion b
eam
anal
ysis
with
pro
tons
(PIX
E, R
BS)
3D high resolution phantom
Confocal microscopy of HaCat cell
Geant4 Microdosimetry
Cellular
irradiatio
n
3 MeV
alphas
Cytoplasm
Nucleus
IN2P3