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nikolas |
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void BX ( Double_t &K){ |
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return pamfield->GetBX((float *)K) |
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} |
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void Field(){ |
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TString PL = gSystem->Getenv("PAM_LIB"); |
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gSystem->Load(PL+"/libyoda.so"); |
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gSystem->Load(PL+"/libDarthVader.so"); |
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gSystem->Load(PL+"/libPamLevel2.so"); |
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TString Calib=gSystem->Getenv("PAM_CALIB"); |
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TrkLevel2* pamfield = new TrkLevel2(); |
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pamfield->LoadField(Calib+"/trk-param/field_param-0/"); |
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//Double_t K[3]=(.0,.0,-30.); |
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// pamfield->GetBX((float *)x); |
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// pamfield->GetBY((float *)x); |
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// pamfield->GetBZ((float *)x); |
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const Int_t n = 200; |
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Double_t x[n]; |
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Double_t Bx[n]; |
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Double_t By[n]; |
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Double_t Bz[n]; |
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Double_t K[3]=(.0,.0,.0); |
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for (Int_t i=0; i<n; i++){ |
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x[i]=-100+i; |
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// K[0]=x[i]; |
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Bx[i]=pamfield->GetBX((float *)K); |
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By[i]=pamfield->GetBY((float *)K); |
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Bz[i]=pamfield->GetBZ((float *)K); |
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// delete K; |
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} |
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TGraph *bx = new TGraph(n,x,Bx); |
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TGraph *by = new TGraph(n,x,By); |
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TGraph *bz = new TGraph(n,x,Bz); |
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TMultiGraph *mg = new TMultiGraph(); |
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mg->Add(bx); |
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mg->Add(by); |
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mg->Add(bz); |
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TCanvas *c = new TCanvas("Mag","Magnetic Field",200,10,600,400); |
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mg->Draw("AC"); |
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} |