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geant4/source/processes/hadronic/models/cascade/History
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2016-06-09 16:15:05 +02:00

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Geant4 - an Object-Oriented Toolkit for Physics Simulation
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History file for hadronic/models/cascade
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This file should be used to summarize modifications introduced in the
code and to keep track of all tags.
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* Please list in reverse chronological order (last date on top)
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1 Dec 2009 Dennis Wright (hadr-casc-V09-02-11)
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- G4PionSampler, G4NucleonSampler: change loop variable in ctor from i to j
in order to satisfy Windows compiler
11 Nov 2009 Dennis Wright (hadr-casc-V09-02-10)
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- G4CascadParticle, G4InuclElementaryParticle: add integer argument to ctor
to indicate which generation cascade particle belongs to.
Also change G4NucleiModel and G4BertiniNucleiModel to use this.
8 Oct 2009 Dennis Wright (hadr-casc-V09-02-09)
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- G4PionSampler: use charge exchange cross section for pi0-p, go back
original Bertini pi0-p elastic partial cs. Update pi0 total cross
section accordingly. Improve fits to pi-p partial cs and update
pi- total cross sections.
- G4NucleiModel: update pi- and pi0 total cross sections
24 Sep 2009 Dennis Wright (hadr-casc-V09-02-08)
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- add class G4NucleonSampler which replaces old pp, pn, and nn partial and
total cross sections also modify other classes which use them
- move large arrays which are instantiated at every call of frequently
used methods. They are now initialized once in constructors.
- G4CascadSpecialFunctions: put copy of total cross section method
in G4NucleiModel, also remove unneeded energy scale arrays
(now replaced with a new one)
- G4CascadeInterface: move instantiation of various collider classes
outside of loop, and put on stack instead of heap
- G4ElementaryParticleCollider: re-design to use G4NucleonSampler and
remove instantiation of large arrays from within loops in code
- G4NucleiModel: remove instatiation of large arrays from with loops,
add new total cross section sampling, remove use of all but one
energy scale
17 Sep 2009 Dennis Wright (hadr-casc-V09-02-07)
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- G4PionSampler: remove large static arrays
- G4FinalStateSampler: remove static array pointer to G4 particle types
- G4ElementaryParticleCollider: clean up
4 Sep 2009 Dennis Wright (hadr-casc-V09-02-06)
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- add assignment operator to class G4CollisionOutput
31 Aug 2009 Dennis Wright (hadr-casc-V09-02-05)
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- add class G4FinalStateSampler which was accidentally omitted from
the previous tag
25 Aug 2009 Dennis Wright (hadr-casc-V09-02-04)
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- correct bug in particle ordering in G4PionSampler
- clean up dead code in G4NucleiModel and G4ElementaryParticleCollider
20 Aug 2009 Dennis Wright (hadr-casc-V09-02-03)
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- create class G4PionSampler: samples partial cross sections, multiplicities
and final state particle types required for pi+, pi- and pi0 scattering
within a nucleus. This class uses re-evaluated pion partial cross sections
and includes production of strange particle pairs.
- G4CascadeSigmaPlusNChannel: correct sigma plus cross sections
- G4CascadSpecialFunctions: move pion, kaon, hyperon total cross sections
to this class
- G4ElementaryParticleCollider: re-write to use G4PionSampler class for
cross sections and multiplicities, remove method reChargering (now redundant)
15 Apr 2009 Dennis Wright (hadr-casc-V09-02-02)
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- previous tag no longer used. Bring hadr-casc-V09-02-00 back to
HEAD and re-tag
21 Feb 2009 Dennis Wright (hadr-casc-V09-02-01)
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- add printCrossSection method to G4CascadSpecialFunctions
- in GeElementaryParticleCollider, add high energy flag to distinguish
"string-like" behavior
- G4IntraNucleiCascader.cc - allow secondaries from HE interaction to
leave nucleus without interacting
- G4NucleiModel - get high_energy_interaction flag value from G4ElementaryParticleCollider
11 Feb 2009 V.Ivanchenko (hadr-casc-V09-02-00)
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- set absorption coefficient 1.0 instead of 0.2 inside
G4CascadSpecialFunctions (D.Wright)
25 Nov 2008 Dennis Wright (hadr-casc-V09-01-10)
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- fix multiplicity sampling in G4ElementaryParticleCollider::generateMultiplicity().
Now partial cross sections are normalized to the total cross section instead
of just the sum of 2-body to 6-body final state cross sections. Also fix
2-body cross sections above 7 GeV where they were too small.
Fix the same cross sections which appear in G4CascadSpecialFunctions.cc
21 Nov 2008 Dennis Wright (hadr-casc-V09-01-09)
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- add some comments to cross section tables in G4CascadSpecialFunctions.cc
and G4ElementaryParticleCollider.cc
24 Oct 2008 Dennis Wright (hadr-casc-V09-01-08)
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- replace GetAtomicMass() with GetNuclearMass() in cascade/G4InuclEvaporation
and evaporation/G4BertiniEvaporation
- V. Ivantchenko added name to G4CascadeInterface ("Bertini Cascade")
17 Oct 2008 Dennis Wright (hadr-casc-V09-01-07)
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- added Coulomb barrier plus barrier penetration in G4IntraNucleiCascader.cc
27 Sep 2008 Dennis Wright (hadr-casc-V09-01-06)
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- Fixed 4.3 compiler warnings for G4InuclElementaryParticle.hh by providing
initializers for particle type and mass
- Remove unused variables totscm, totlab in G4BigBanger.cc,
G4ElementaryParticleCollider.cc, and unused mom1 from G4InuclSpecialFunctions.cc
22 Sep 2008 Gabriele Cosmo (hadr-casc-V09-01-05)
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- Introduced simple wrapper class G4CascadeMomentum meant to replace usage
of std::vector<double> in the cascade code, to reduce memory allocations.
Courtesy of P.Elmer (princeton Univ.).
- Modified cascade code to make use of G4CascadeMomentum.
3 Sep 2008 Dennis Wright (hadr-casc-V09-01-04)
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- G4ElementaryParticleCollider.cc: in method generateMultiplicity, remove
large_cut which increases multiplicity from 3 to 4 abruptly at 4 GeV
and above. This caused a sharp drop-off in the single pion spectra from
pH reactions. The effect in heavier nuclei is small.
29 Jun 2008 Dennis Wright (hadr-casc-V09-01-03)
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- add changes made by M. Paterno, J. Kowalkowski, and M. Fischler (FNAL)
to speed up code. All G4Cascade***Channel classes and related code changed.
5 May 2008 Dennis Wright (hadr-casc-V09-01-02)
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- retag hadr-casc-V09-csbug as hadr-casc-V09-01-02
30 Apr 2008 Dennis Wright (hadr-casc-V09-csbug)
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- fix cross section bug in G4CascadSpecialFunctions that returned
low or zero total cross sections for pi-p, pi+n, np, and pi0
interactions
29 Apr 2008 Dennis Wright (hadr-casc-V09-01-01)
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- bring tag hadr-casc-V09-01-coula to HEAD, make official tag
22 Apr 2008 Dennis Wright (hadr-casc-V09-01-param)
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- changed pp, nn total cross section parameterization in
G4CascadSpecialFunctions to more closely reflect the PDG values (old one
was off by as much as a factor of 3.
3 Apr 2008 Dennis Wright (hadr-casc-V09-01-coula)
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- removed Coulomb barrier from G4IntraNucleiCascader.cc (causes unphysical spike)
3 Apr 2008 Dennis Wright (hadr-casc-V09-01-coul)
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- Added Coulomb barrier in G4EquilibriumEvaporator.cc, G4IntraNucleiCascader.cc
17 Nov 2007 Dennis Wright (hadr-casc-V09-00-02)
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- Fix angular distribution for nucleon-nucleon elastic scattering
above 2.8 GeV, by modifying G4ElementaryParticleCollider::getElasticCase
25 May 2007 Dennis Wright for Aatos Heikkinen (hadr-casc-V08-03-00)
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- implemented interfaces for pre-equilibrium and equilbrium evaporation
models
04 May 2007 Aatos Heikkinen (hadr-casc-V08-02-00)
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- Added protection in G4ElementaryParticleCollider against negative
value to sqrt().
08 May 2006 Dennis Wright (hadr-casc-V08-00-00)
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- cascade: remove G4BERTINI_KAON conditional assembly flags. Files
affected:
G4ElementaryParticleCollider.hh, cc
G4InuclElementaryParticle.hh
G4NucleiModel.hh, cc
G4CascadeInterface.cc
G4IntraNucleiCascader.cc
- cascade (Pekka Kaitaniemi): G4ElasticCascadeInterface: derive
from G4VIntraNuclearTransportModel instead of G4HadronElastic.
Check for case when no elastic scattering occurs. If so,
return original bullet and target.
24 Nov 2005 Dennis Wright (hadr-casc-V07-01-00)
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- cascade (bertini-V07-01-00 by Aatos Heikkinen)
elastic scattering interface added:
G4ElasticCascadeInterface.hh, .cc added
G4CascadeInterface.hh modified