JP Wellisch - LCG Project - Applications Area - Cern
JP Wellisch - LCG Project - Applications Area - Cern
JP Wellisch - LCG Project - Applications Area - Cern
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J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
Geant4 Hadronic Physics Status and<br />
Validation for large HEP Detectors<br />
J.P. <strong>Wellisch</strong><br />
CERN/EP/SFT
Outline:<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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Principal software considerations:<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
„ Use an open and extendible architecture.<br />
„ Use implementation frameworks to achieve maximum<br />
extendibility and flexibility in the physics modeling<br />
„ We invite collaboration with all experts in the field, to render<br />
the physics base of the geant4 toolkit as rich as possible<br />
„ Use abstract interfaces to de-couple de couple and enable independent<br />
development by experts<br />
„ Ensure that the physics implementations are both accessible<br />
to and transparent for the user, so results can more easily be<br />
verified, and if deviations are found, they can be traced back,<br />
and the modeling can be adapted to the usage.
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Modeling overview<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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Parameterisation driven models<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
Data driven models:<br />
Low energy neutron (J.P. <strong>Wellisch</strong>)<br />
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Theory driven models<br />
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CERN/EP/SFT<br />
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CERN/EP/SFT<br />
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CERN/EP/SFT<br />
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Why binary cascade?<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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The potentials, transport equation, cross-<br />
section calculation, pauli-principle, pauli principle, etc..<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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Proton induced reactions cross-<br />
sections<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Binary cascade<br />
prediction<br />
Sample the<br />
Impact parameter over<br />
A large area.<br />
Make the ratio of ‘hits’<br />
To trials, times the area<br />
sampled<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Forward peaks in proton<br />
scattering (256 MeV) MeV<br />
Beryllium<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
Aluminum<br />
Iron<br />
Lead
One verification example:<br />
597 MeV p on Pb (PRC 22, p1184)<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
30 degrees<br />
60 degrees<br />
90 degrees<br />
120 degrees<br />
150 degrees<br />
Neutron production<br />
At 30, 60, 90, 120<br />
And 150 degrees
One verification example:<br />
597 MeV p on Pb (PRC 22, p1184)<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
Pi+ production at<br />
22.5, 45, 60, 90,<br />
And 130 degrees
One verification example:<br />
597 MeV p on Pb (PRC 22, p1184)<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
Pi- production at<br />
22.5, 45, 60, 90,<br />
And 130 degrees
Model validation<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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Author validation<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
Working group validation<br />
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Anti proton annihilation<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Anti proton annihilation<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Stopping pion minus<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Low energy neutron capture<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Doppler broadening (low energy neutrons)<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Neutron induced isotope production<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Isotope production<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Proton induced reactions<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Example WG test<br />
results<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Test-beams Test beams<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
ATLAS TILE prelim. CMS combined prelim.
A few recent test-beam test beam results (courtesy of<br />
ATLAS)<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
What can we profit from 5.0 for<br />
physics list updates<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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Studying physics-lists physics lists updates for G4 5.0<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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HEC G4 5.0 (true geometry, my toy analysis),<br />
what for the rest?<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
HEC G4 5.0 (true geometry, my toy analysis),<br />
what for the rest?<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
HEC shower shapes G4 5.0 (true geometry, my toy analysis)<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT
Summary<br />
J.P. <strong>Wellisch</strong>,<br />
CERN/EP/SFT<br />
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