Speaker
Julia Yarba
(Fermi National Accelerator Lab. (US))
Description
In the past year several improvements in Geant4 hadronic physics code
have been made, both for
HEP and nuclear physics applications. We discuss the implications of
these changes for physics
simulation performance and user code. In this context several of the
most-used codes will be covered
briefly. These include the Fritiof (FTF) parton string model which has
been extended to include
antinucleon and antinucleus interactions with nuclei, the Bertini-style
cascade with its improved CPU
performance and extension to include photon interactions, and the
precompound and deexcitation
models. We have recently released new models and databases for low
energy neutrons, and the
radioactive decay process has been improved with the addition of
forbidden beta decays and
better gamma spectra following internal conversion.
As new and improved models become available, the number of tests and
comparisons to data has
increased. One of these is a validation of the parton string models
against data from the MIPP
experiment, which covers the largely untested range of 50 to 100 GeV.
At the other extreme, a
new stopped hadron validation will cover pions, kaons and antiprotons.
These, and the ongoing
simplified calorimeter studies, will be discussed briefly. We also
discuss the increasing number of
regularly performed validations, the demands they place on both software
and users, and the
automated validation system being developed to address them.
Authors
D.H. Wright
(SLAC)
Dennis Herbert Wright
(SLAC National Accelerator Laboratory (US))
Dr
Hans-Joachim Wenzel
(Fermi National Accelerator Lab. (US))
Julia Yarba
(Fermi National Accelerator Lab. (US))
Michael Kelsey
(SLAC National Accelerator Laboratory (US))
Sunanda Banerjee
(Saha Institute of Nuclear Physics (IN))
Dr
Vladimir Uzhinsky
(CERN and JINR)
Co-authors
Andreas Schaelicke
(University of Edinburgh (GB))
Mrs
Jennifer Karkoska
(University of Rochster)
