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