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#ifndef PAMVMCFIELDMGR_H |
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#define PAMVMCFIELDMGR_H |
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#include <iostream> |
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#include "TString.h" |
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#define PAMFIELD 1 |
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#define ZCAL 13.05 //cm |
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#define CALS3 10.639 //cm |
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#define ZSPEBP 2.97 //cm |
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#define HORMG 22.57 //cm |
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#ifdef PAMFIELD |
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#include "TrkParams.h" |
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#endif |
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class PamVMCFieldMgr: public TObject { |
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private: |
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static PamVMCFieldMgr * fm; |
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protected: |
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PamVMCFieldMgr() {}; |
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public: |
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static PamVMCFieldMgr * Instance(); |
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void LoadField(){ |
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#ifdef PAMFIELD |
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// Load the PAMELA magnetic field |
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std::string pamcal=getenv("PAM_CALIB"); pamcal+="/trk-param/field_param-0/"; |
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std::cout << "PAMELA env: " << pamcal << std::endl; |
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TrkParams::SetTrackingMode(); |
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TrkParams::SetPrecisionFactor(); |
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TrkParams::SetStepMin(); |
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TrkParams::Set(pamcal.c_str(),1); |
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TrkParams::Load(1); |
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#endif |
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} |
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void Field(const Double_t* x, Double_t* b) const { |
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#ifdef PAMFIELD |
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float xm[3]={x[0],x[1],x[2]-ZCAL-CALS3-ZSPEBP-HORMG}; |
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b[0] = TrkParams::GetBX((float *)xm)*10; |
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b[1] = TrkParams::GetBY((float *)xm)*10; |
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b[2] = TrkParams::GetBZ((float *)xm)*10; |
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#else |
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if(x) { |
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for (Int_t i=0; i<3; i++) b[i] = 0.0; |
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} else { |
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b[0]=b[1]=b[2]=0.0; |
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} |
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#endif |
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} |
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void Field(const Float_t* x, Float_t* b) const { |
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#ifdef PAMFIELD |
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float xm[3]={x[0],x[1],x[2]-ZCAL-CALS3-ZSPEBP-HORMG}; |
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b[0] = TrkParams::GetBX((float *)xm)*10; |
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b[1] = TrkParams::GetBY((float *)xm)*10; |
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b[2] = TrkParams::GetBZ((float *)xm)*10; |
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#else |
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if(x) { |
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for (Int_t i=0; i<3; i++) b[i] = 0.0; |
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} else { |
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b[0]=b[1]=b[2]=0.0; |
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} |
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#endif |
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} |
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}; |
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#endif |
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