LMU/musrfit
LMU/musrfit
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Rearranged input parameter.

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This commit is contained in:
nemu 2013-04-04 15:20:34 +00:00
parent 6899dab5a2
commit 29ca354399
1 changed files with 29 additions and 19 deletions
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48
src/tests/MuTransition/runMuSimulation.C
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@ -43,14 +43,24 @@ void runMuSimulation()
decayAnaModule = histosFolder->AddFolder("DecayAnaModule", "muSR decay histograms");
//prepare to run simulation; here: isotropic Mu in Germanium
UInt_t runNo = 9859;
Double_t T = 290.; //temperature
Double_t capRate = 300.0;//*sqrt(T/200.); //assume that capture rate varies as sqrt(T), capRate = sigma*v*p , v ~ sqrt(T)
UInt_t runNo = 9903;
Double_t T = 300.; //temperature
Double_t capRate = 1.0;//*sqrt(T/200.);
//assume that capture rate varies as sqrt(T), capRate = sigma*v*p , v ~ sqrt(T)
Double_t ionRate; //assume Arrhenius behaviour ionRate = preFac*exp(-EA/kT)
Double_t EA; //activation energy (meV)
EA = 170.;
ionRate = 2.9e7 * exp(-EA/(0.08625*T)); // Ge: 2.9*10^7MHz "attempt" frequency; 1K = 0.08625 meV
Double_t EA = 100.; //activation energy (meV)
ionRate = 2.9e7 * exp(-EA/(0.08625*T)); // Ge: 2.9*10^7MHz "attempt" frequency; 1K = 0.08625 meV
Double_t B = 100.; //field in G
Double_t Freq12 = 4463; //Mu freq of the 12 transition
Double_t Freq34 = 4463; //Mu freq of the 34 transition
Double_t Freq23 = 4463; //Mu freq of the 23 transition
Double_t Freq14 = 4463; //Mu freq of the 14 transition
Double_t MuFrac = 1.0; //total Mu fraction
Double_t MuFrac12 = 0.5; //Mu in states 12 and 34
Double_t MuFrac23 = 0.5; //Mu in states 23 and 14
Int_t Nmuons = 1e7; //number of muons
Double_t Asym = 0.27; //muon decay asymmetry
// feed run info header
TString tstr;
runInfo = gROOT->GetRootFolder()->AddFolder("RunInfo", "LEM RunInfo");
@ -58,7 +68,7 @@ void runMuSimulation()
header = new TLemRunHeader();
tstr = TString("0");
tstr += runNo;
tstr += TString(" - Ge, Mu-frac 1.0, Mu12 737MHz (0.44), Mu34 -1622MHz(0.44), T=290K/EA=170meV, Cap. 300.0MHz, 100mT");
tstr += TString(" - Mu-frac 1.0, Mu12 -4463MHz (0.5), Mu34 -4463MHz(0.5), T=300K/EA=100meV, Cap. 1.0MHz, 10mT");
header->SetRunTitle(tstr.Data());
header->SetLemSetup("trivial");
@ -69,7 +79,7 @@ void runMuSimulation()
header->SetSampleHV(0.0, 0.01);
header->SetImpEnergy(31.8);
header->SetSampleTemperature(T, 0.001);
header->SetSampleBField(1000.0, 0.1);
header->SetSampleBField(B, 0.1);
header->SetTimeResolution(1.);
header->SetNChannels(12001);
header->SetNHist(2);
@ -95,18 +105,18 @@ void runMuSimulation()
return;
}
simulateMuTransition->SetMuPrecFreq12(737.3); // MHz
simulateMuTransition->SetMuPrecFreq34(-1622.2); // MHz
simulateMuTransition->SetMuPrecFreq23(2051.6); // MHz
simulateMuTransition->SetMuPrecFreq14(4111.2); // MHz
simulateMuTransition->SetMuFraction(1.0); // initial Mu fraction
simulateMuTransition->SetMuFractionState1(0.88); // Mu in states 12, 34
simulateMuTransition->SetMuFractionState2(0.12); // Mu in states 23, 14
simulateMuTransition->SetBfield(0.1); // Tesla
simulateMuTransition->SetMuPrecFreq12(Freq12); // MHz
simulateMuTransition->SetMuPrecFreq34(Freq34); // MHz
simulateMuTransition->SetMuPrecFreq23(Freq23); // MHz
simulateMuTransition->SetMuPrecFreq14(Freq14); // MHz
simulateMuTransition->SetMuFraction(MuFrac); // initial Mu fraction
simulateMuTransition->SetMuFractionState1(MuFrac12); // Mu in states 12, 34
simulateMuTransition->SetMuFractionState2(MuFrac23); // Mu in states 23, 14
simulateMuTransition->SetBfield(B/10000.); // Tesla
simulateMuTransition->SetCaptureRate(capRate); // MHz
simulateMuTransition->SetIonizationRate(ionRate); // MHz
simulateMuTransition->SetNmuons(1e7);
simulateMuTransition->SetDecayAsymmetry(0.27);
simulateMuTransition->SetNmuons(Nmuons);
simulateMuTransition->SetDecayAsymmetry(Asym);
simulateMuTransition->SetDebugFlag(kFALSE); // to print time and phase during charge-changing cycle
simulateMuTransition->PrintSettings();