Hadronic Working Group Items for 2007
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Gunter Folger
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Verify high energy string models at 10-100 GeV
Improve QGS model (with Vladimir Grichine)
Put improved FTF model into physics list
Examine binary cascade
improve coupling to precompound model
make it usable for pions
Vladimir Grichine
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Complete Glauber-Gribov cross sections
Test Barashenkov (p,n) cross sections
Unit testing of internal algorithms of QGS model to correct possible
incorrect implementations (with Gunter Folger)
Aatos Heikkinen
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INCL/ABLA cascade
supervise Pekka Kaitaniemi and original developrers (mainly Alain Boudard)
Direct translation to C released in June (OO-designed models to be released
in December)
Unit test and Geant4 example demonstrating the usage of new models.
Also, ROOT usage in data-analysis demonstrated
Bertini cascade
Install/improve Coulumb barrier
Release sub-model interfaces (evaporation, precompound)
Optimize code for speed
Tune internal cross-sections and nuclear model
Alex Howard
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Continue neutron validation
Look into n-Tof and MEGAPIE/Isolde as possible benchmarks
Vladimir Ivanchenko
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Make new advanced example of a sampling calorimeter (HADR02)
Improve tests
test30:
test35: extend number of targets
Isotopes: test masses and abundances
Validation and tuning of elastic models (with Dennis Wright)
Deliver first version of charge exchange process
Develop new parameterized model using HARP data (with Dennis Wright)
Tatsumi Koi
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Validation of binary cascade for heavy ion-ion collisions
Extend binary cascade or develop new model to handle high Z and high energy
JQMD, Fritiof models are likely alternatives
Begin migration from G4NDL to Livermore neutron data library format
this includes developing a new high precision neutron category of
models to eventually replace the existing HP models
Mikhail Kossov (CHIPS)
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Cross sections:
Subtract the CHIPS elastic XS from the total XS measurements and use them
together with the inelastic XS measurements for CHIPS parameterization of
inelastic XS for nucleons
Use the CHIPS parameterization of electromagnetic pA elastic scattering
for a discrete process, which can substitute for multiple scattering
(continuous) process of protons
Use NN and NA elastic XS approximation for simulation of incoherent
quasi-elastic and coherent charge exchange reaction of nucleons on nuclei
Tuning low energy nucleon-nucleus CHIPS inelastic interaction:
Collect data base of differential multiplicities for the tuning of pA
inelastic interactions, make a test facility (test49) for validation and
tuning of Geant4 inelastic processes
Find an optimal combination of deep inelastic CHIPS nuclear fragmentation
and quasi-elastic (a number of effective quasi-free nucleons)
At medium and high energies generalize quasi-elastic interaction (with
fixed number of effective nucleons) to quasi-free NN interaction (multiple
meson production on quasi-free nucleons).
Develop low energy simulation of antiproton-nuclear interactions
Parameterize elastic and inelastic cross-sectoions
Tune the CHIPS inelastic antiproton-nuclear interactions for low energies
Upgrade photo- and lepto-nuclear single nucleon production
Tune (gamma,n) branching of photo-nuclear reaction;
Convert (n,gamma) cross-sections to (gamma,n) cross-sections
Add quasi-elastic (l,l' N) lepto-nuclear reactions
As soon as the low energy CHIPS program is done for nucleons (and
anti-nucleons), make first steps for CHIPS pion-nuclear.
Nikolai Starkov
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Coherent elastic hadron scattering from nuclei:
optimize calculation of elastic scattering distibution
function (large increase in speed expected).
take into account difference between hadron-proton and
hadron-neutron parameters of elastic scattering amplitude
prepare a generator of quasi-elastic hadron-nucleus scattering summed
over all discrete and continuous parts of the spectra
Continue work on generator of inelastic hadron-nucleus events
in soft transfer momentum area (|t|