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Question Neutron HP cross section precision 2% 

Forum: Hadronic Processes
Date: 10 Jul, 2014
From: John Leacock <John Leacock>

Is there a reason for limiting the precision of the neutron high-precision cross sections to 2%? In my tests there seems to be no speed gain and this code could cause a systematic shift in returned cross sections.

In file: G4NeutronHPElementData.cc

  G4NeutronHPElementData::G4NeutronHPElementData()
  {
     precision = 0.02;
     theFissionData = new G4NeutronHPVector;
     theCaptureData = new G4NeutronHPVector;
     theElasticData = new G4NeutronHPVector;
     theInelasticData = new G4NeutronHPVector;
    theIsotopeWiseData = 0;
  }

the precision var is used to "ThinOut" the cross section vs. energy in the function below:
    theElasticData->ThinOut(precision);
    theInelasticData->ThinOut(precision);
    theCaptureData->ThinOut(precision);
    theFissionData->ThinOut(precision);

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1 None: Re: Neutron HP cross section precision 2%   (Koi, Tatsumi - 01 Aug, 2014)
(_ None: Re: Neutron HP cross section precision 2%   (John Leacock - 26 Sep, 2014)
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