Commit 63f4cb14 authored by Adrien Matta's avatar Adrien Matta
Browse files

* Adding BDC offset macro to s034

parent f775c15e
Pipeline #122415 passed with stages
in 8 minutes and 46 seconds
vector<TVector3*> pos1;
vector<TVector3*> pos2;
vector<TVector3*> posM;
////////////////////////////////////////////////////////////////////////////////
double devR(const double* parameter){
// Return the standard deviation in Brho
unsigned int size = pos1.size();
TVector3 o1(parameter[0],parameter[1],parameter[2]);
TVector3 o2(parameter[3],parameter[4],parameter[5]);
double dR;
TVector3 p1,p2,pB,pM;
static auto h = new TH1D("h","h", 1000,-0,100);
h->Reset();
for(unsigned int i = 0 ; i < size ; i++){
pM=*(posM[i]);
p1=*(pos1[i])+o1;
p2=*(pos2[i])+o2;
TVector3 BDCDir=p2-p1;
BDCDir=BDCDir.Unit();
BDCDir*=(pM.Z()-p2.Z())/BDCDir.Z();
pB=p2+BDCDir;
dR=(pB-pM).Mag();
//cout << (pB-pM).Mag2() << " " << dR << endl;
double R = sqrt(pB.X()*pB.X()+pB.Y()*pB.Y());
if(R<15)
h->Fill(dR);
}
cout << h->GetMean() << " " << h->GetStdDev() << " " << parameter[0] << endl;
h->Draw();
gPad->Update();
return (h->GetMean()+h->GetStdDev() );
}
////////////////////////////////////////////////////////////////////////////////
void LoadFile(){
ifstream file("Calibration/Pos/bdc.txt");
if(!file.is_open()){
cout << "fail to load file" << endl;
exit(1);
}
else {
cout << "Success opening file" << endl;
}
double xm,ym,zm;
double x1,y1,z1;
double x2,y2,z2;
while(file >> x1 >> y1 >> z1 >> x2 >> y2 >> z2 >> xm >> ym >> zm ){
auto p1 = new TVector3(x1,y1,z1);
auto p2 = new TVector3(x2,y2,z2);
auto pM = new TVector3(xm,ym,zm);
pos1.push_back(p1);
pos2.push_back(p2);
posM.push_back(pM);
}
file.close();
}
////////////////////////////////////////////////////////////////////////////////
void BDC(){
// Data
LoadFile();
// Minimizer
auto min=ROOT::Math::Factory::CreateMinimizer("Minuit2", "Migrad");
auto func=ROOT::Math::Functor(&devR,6);
min->SetFunction(func);
min->SetPrintLevel(0);
min->SetPrecision(1e-10);
double parameter[6]={0,0,-6876.34,0,0,-5876.7};
devR(parameter);
// min->SetLimitedVariable(0,"AM",parameter[0],1,-90,90);
min->SetLimitedVariable(0,"X1",parameter[0],1,-10,10);
min->SetLimitedVariable(1,"Y1",parameter[1],1,-10,10);
// min->SetLimitedVariable(2,"Z1",parameter[2],1,parameter[2]-100,parameter[2]+100);
min->SetFixedVariable(2,"Z1",parameter[2]);
min->SetLimitedVariable(3,"X2",parameter[3],1,-10,10);
min->SetLimitedVariable(4,"Y2",parameter[4],1,-10,10);
//min->SetLimitedVariable(5,"Z2",parameter[5],1,parameter[5]-100,parameter[5]+100);
min->SetFixedVariable(5,"Z2",parameter[5]);
min->Minimize();
const double* x = min->X();
cout << "X1 =" << x[0]<<endl;
cout << "Y1 =" << x[1]<<endl;
cout << "Z1 =" << x[2]<<endl;
cout << "X2 =" << x[3]<<endl;
cout << "Y2 =" << x[4]<<endl;
cout << "Z2 =" << x[5]<<endl;
cout << "Minimum: " << devR(x) << endl;
}
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