$Id: History,v 1.17 2010/09/28 09:03:07 gcosmo Exp $
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       Geant4 - an Object-Oriented Toolkit for Physics Simulation
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      History file for hadronic/models/parton_string/hadronization directory
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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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22-September-2010  V. Uzhinsky          (had-hadronization-V09-03-01)
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- Warning messages are erased in G4LundStringFragmentation.cc

20-September-2010  V. Uzhinsky
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- Phase space restrictions are introduced at small mass string 
  fragmentation.

5-August-2010  V. Uzhinsky
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- Small re-organization is done in G4ExcitedStringDecay.hh. Inline
  methods were moved to G4ExcitedStringDecay.cc.

- An action is introduced in FragmentStrings. It acts when 
  EnergyAndMomentumCorrector can not be done due to large sum masses
  of produced hadrons. This led to energy-momentum violation. Now
  string fragmentation is repeted 100 times in a bad case.

21-June-2010  V. Uzhinsky               (had-hadronization-V09-03-00)
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- Lund string fragmentation is improved. The inselfconsistency
  between LightFragmentationTest and Lund fragmentation is erased.
  Energy conservation in FTF is recovered.

6-December-2010  V. Uzhinsky,           (had-hadronization-V09-02-04)
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- Lund string fragm. improved, start fragmentation.

17-July-2009  V. Uzhinsky               (had-hadronization-V09-02-03)
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- Some small optimization are done.

9-July-2009 V. Uzhinsky                 (had-hadronization-V09-02-02)
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- Bug was fixed in G4VLongitudinalStringDecay.cc at calculation of
  formation/creation time, c_light was inserted.
- String tension parameter was set to the usual value (1 GeV/fm) in
  G4LundStringFragmentation.cc

22-May-2009   Gunter Folger             (had-hadronization-V09-02-01)
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- remove temporary workaround - fix is now in QGS
- change pt sampling in G4LundStringFragmentation to avoid near endless
  loop; this should improve overall performance slightly.
  Affected G4VLongitudinalStringDecay, where SampleQuarkPt() is 
  implemented; affected .hh and .cc for new optional argument of max Pt 
  to SampleQuarkPt()

18-May-2009   Gunter Folger             (had-hadronization-V09-02-00)
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- reset formatting changes by MK with tags hadr-prtn-hadr-V09-02-xx
- temporary workaround for wrong PDG codes created on wrong input from QGS 
  when used for e.g. antiproton.
   
2-May 2007    Gunter Folger             (had-hadronization-V08-02-03)
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- G4ExcitedStringDecay.hh: protect againt divide by 0 when KTsum1.e() is 0. 
    
24-April 2007 Gunter Folger             (had-hadronization-V08-02-02)
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- Seperate FTF and QGS fragmentation dir methods where V.Uzhinsky
  modified the algorithm for FTF.

2-March 2007 Gunter Folger              (had-hadronization-V08-02-01)
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- G4ExcitedStringDecay::EnergyAndMomentumCorrector no longer causes Exception 
  when no converging. Add more info when failing. Return correct status.
   
24-Jan 2007 Gunter Folger               (had-hadronization-V08-02-00)
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- G4ExcitedStringDecay::EnergyAndMomentumCorrector :
  Correct bug which did stop correction even if not yet converged;
  check on convergence must check that scale-1 is close to 0,
  and not less than 0

26-May 2006 Gunter Folger
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- Fix ( finally?) the charge check in G4HadronBuilder.cc