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MomCorr.C_1
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MomCorr.C_1
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#define NSect 6
/* Theta Binning for Theta correction */
#define ThetaC_n 144
Double_t ThetaC_min = 0;
Double_t ThetaC_max = 144;
Double_t ThetaC_wid = 1.;
/* Theta Binning for Momentum correction */
#define MomC_T_n 48
Double_t MomC_T_min = 1;
Double_t MomC_T_max = 145;
Double_t MomC_T_wid = 3.;
/* Size of Vectors with parameters for phi dependence of Momentum Correction
phi between -30 and 30 deg */
#define Npar 4
/* CLASS DEFINITION */
class MomCorr_e1f {
public:
MomCorr_e1f();
private:
/* Vectors with parameters for phi dependence of Theta Correction
phi between -30 and 30 deg */
Double_t c0_theta[ThetaC_n][NSect];
Double_t c1_theta[ThetaC_n][NSect];
Double_t c2_theta[ThetaC_n][NSect];
/* Vectors with parameters for phi dependence of Electron Momentum Correction
phi between -30 and 30 deg */
Double_t c0_mom[MomC_T_n][NSect][Npar];
Double_t c1_mom[MomC_T_n][NSect][Npar];
/* Vectors with parameters for phi dependence of pi+ Momentum Correction
phi between -30 and 30 deg */
Double_t d0_mom[MomC_T_n][NSect][Npar];
Double_t d1_mom[MomC_T_n][NSect][Npar];
/* REad angle correction parameters */
void read_theta_par();
/* Read momentum correction parameters for electrons */
void read_mom_par();
/* Read momentum correction parameters for pi+ */
void read_mom_pip_par();
/* Angle correction */
Double_t theta_corr(Double_t , Double_t , Int_t );
/* momentum correction for electrons */
Double_t mom_corr(Double_t , Double_t , Double_t , Int_t );
/* momentum correction for hadrons */
Double_t mom_corr_pip(Double_t , Double_t , Double_t , Int_t);
public:
TLorentzVector PcorN(TLorentzVector Pin, Int_t charge, Int_t ipart);
};
/********************************************/
/* Class Constructor */
MomCorr_e1f::MomCorr_e1f() {
/* Reading angle correction parameters */
fprintf(stdout, "reading parameters \n");
read_theta_par();
read_mom_par();
read_mom_pip_par();
}
/**********************************************/
/* CLASS METHODES */
void MomCorr_e1f::read_theta_par() {
/* Reading angle correction parameters */
memset(&c0_theta[0][0], 0, ThetaC_n*NSect*sizeof(Double_t));
memset(&c1_theta[0][0], 0, ThetaC_n*NSect*sizeof(Double_t));
memset(&c2_theta[0][0], 0, ThetaC_n*NSect*sizeof(Double_t));
char file[100];
for (Int_t s=1; s<=NSect; s++) {
sprintf(file, "angles_s%d.out", s);
FILE *fp = fopen(&file[0], "r");
if (fp) {
fprintf(stdout, "Theta Correction sector %d\n", s);
for (Int_t j=0; j<ThetaC_n; j++) {
Double_t x, y;
Double_t a1,a2,a3;
char str[200];
while (fgets(str, sizeof(str), fp)) {
sscanf(str, "%lf %lf %lf %lf %lf %lf %lf", &x, &a1, &y, &a2, &y, &a3, &y);
Int_t bin = (x-ThetaC_min)/ThetaC_wid;
c0_theta[bin][s-1] = a1;
c1_theta[bin][s-1] = a2;
c2_theta[bin][s-1] = a3;
fprintf(stdout, "%6.2f %12.8f %12.8f %12.8f \n", x, c0_theta[bin][s-1], c1_theta[bin][s-1], c2_theta[bin][s-1]);
}
}
fclose(fp);
}
else
fprintf(stdout, "===>>> WARNING: Cannot read angle correction from file: %s\n", file);
}
}
void MomCorr_e1f::read_mom_par() {
/* Reading momentum correction parameters for electrons */
memset(&c0_mom[0][0][0], 0, MomC_T_n*NSect*Npar*sizeof(Double_t));
memset(&c1_mom[0][0][0], 0, MomC_T_n*NSect*Npar*sizeof(Double_t));
char file[100];
for (Int_t s=1; s<=NSect; s++) {
fprintf(stdout, "-------------------------------------- \n");
fprintf(stdout, "electron Momentum Correction sector %d\n", s);
for (Int_t k=0; k<2; k++) {
sprintf(file, "momentum2_s%d_c%d.out", s, k);
FILE *fp = fopen(&file[0], "r");
if (fp) {
fprintf(stdout, " Reading Parameter c%d\n", k);
for (Int_t j=0; j<MomC_T_n; j++) {
Double_t x1, y;
Double_t a1,a2,a3,a4;
char str[250];
while (fgets(str, sizeof(str), fp)) {
sscanf(str, "%lf %lf %lf %lf %lf %lf %lf %lf %lf", &x1, &a1, &y, &a2, &y, &a3, &y, &a4, &y);
Int_t bin = (x1-MomC_T_min)/MomC_T_wid;
if (k==0) {
c0_mom[bin][s-1][0] = a1;
c0_mom[bin][s-1][1] = a2;
c0_mom[bin][s-1][2] = a3;
c0_mom[bin][s-1][3] = a4;
fprintf(stdout, "%6.2f %12.8f %12.8f %12.8f %12.8f \n", x1, c0_mom[bin][s-1][0], c0_mom[bin][s-1][1], c0_mom[bin][s-1][2], c0_mom[bin][s-1][3]);
}
else if (k==1) {
c1_mom[bin][s-1][0] = a1;
c1_mom[bin][s-1][1] = a2;
c1_mom[bin][s-1][2] = a3;
c1_mom[bin][s-1][3] = a4;
fprintf(stdout, "%6.2f %12.8f %12.8f %12.8f %12.8f \n", x1, c1_mom[bin][s-1][0], c1_mom[bin][s-1][1], c1_mom[bin][s-1][2], c1_mom[bin][s-1][3]);
}
}
}
fclose(fp);
}
else
fprintf(stdout, "===>>> WARNING: Cannot read electron momentum correction from file: %s\n", file);
}
}
}
void MomCorr_e1f::read_mom_pip_par() {
/* Reading momentum correction parameters for pi+ */
memset(&d0_mom[0][0][0], 0, MomC_T_n*NSect*Npar*sizeof(Double_t));
memset(&d1_mom[0][0][0], 0, MomC_T_n*NSect*Npar*sizeof(Double_t));
char file[100];
for (Int_t s=1; s<=NSect; s++) {
fprintf(stdout, "-------------------------------------- \n");
fprintf(stdout, "pi+ Momentum Correction sector %d\n", s);
for (Int_t k=0; k<2; k++) {
sprintf(file, "momentum3_s%d_c%d.out", s, k);
FILE *fp = fopen(&file[0], "r");
if (fp) {
fprintf(stdout, " Reading Parameter d%d\n", k);
for (Int_t j=0; j<MomC_T_n; j++) {
Double_t x1, y;
Double_t a1,a2,a3;
char str[250];
while (fgets(str, sizeof(str), fp)) {
sscanf(str, "%lf %lf %lf %lf %lf %lf %lf %lf %lf", &x1, &a1, &y, &a2, &y, &a3, &y);
Int_t bin = (x1-MomC_T_min)/MomC_T_wid;
if (k==0) {
d0_mom[bin][s-1][0] = a1;
d0_mom[bin][s-1][1] = a2;
d0_mom[bin][s-1][2] = a3;
fprintf(stdout, "%6.2f %12.8f %12.8f %12.8f %12.8f \n", x1, d0_mom[bin][s-1][0], d0_mom[bin][s-1][1], d0_mom[bin][s-1][2], d0_mom[bin][s-1][3]);
}
else if (k==1) {
d1_mom[bin][s-1][0] = a1;
d1_mom[bin][s-1][1] = a2;
d1_mom[bin][s-1][2] = a3;
fprintf(stdout, "%6.2f %12.8f %12.8f %12.8f %12.8f \n", x1, d1_mom[bin][s-1][0], d1_mom[bin][s-1][1], d1_mom[bin][s-1][2], d1_mom[bin][s-1][3]);
}
}
}
fclose(fp);
}
else
fprintf(stdout, "===>>> WARNING: Cannot read pi+ momentum correction from file: %s\n", file);
}
}
}
/* ================================================================= */
Double_t MomCorr_e1f::theta_corr(Double_t ThetaM, Double_t PhiM, Int_t Sector) {
/* input: phi between 0 and 360 deg */
Double_t phis = PhiM - 60*(Sector-1);
if (phis > 330.) phis = phis - 360;
Int_t bin = (ThetaM - ThetaC_min)/ThetaC_wid;
Double_t ThetaBin = ThetaC_min + ThetaC_wid * (bin+0.5);
Int_t bin2 = bin + 1;
if (ThetaM < ThetaBin) bin2 = bin - 1;
if (bin2 < 0) bin2 = 0;
if (bin2 >= ThetaC_n) bin2 = ThetaC_n - 1;
Double_t ThetaBin2 = ThetaC_min + ThetaC_wid * (bin2+0.5);
//fprintf(stdout, " ----------- \n");
//fprintf(stdout, "T=%lf Tb1=%lf Tb2=%lf b1=%d b2=%d\n", ThetaM, ThetaBin, ThetaBin2, bin, bin2);
//fprintf(stdout, "S=%d th=%f bin=%d c0=%lf \n", Sector, ThetaM, bin, c0_theta[bin][Sector-1]);
Double_t ThetaC = ThetaM - (c0_theta[bin][Sector-1] + c1_theta[bin][Sector-1]*phis + c2_theta[bin][Sector-1]*phis*phis);
Double_t ThetaC2 = ThetaM - (c0_theta[bin2][Sector-1] + c1_theta[bin2][Sector-1]*phis + c2_theta[bin2][Sector-1]*phis*phis);
Double_t fw = TMath::Abs(ThetaM - ThetaBin) / ThetaC_wid;
Double_t fw2 = TMath::Abs(ThetaM - ThetaBin2) / ThetaC_wid;
Double_t Theta = fw2*ThetaC + fw*ThetaC2;
//fprintf(stdout, " d1=%lf w1=%lf d2=%lf w2=%lf dm=%lf\n", ThetaC, fw, ThetaC2, fw2, Theta);
return Theta;
}
Double_t MomCorr_e1f::mom_corr(Double_t MomM, Double_t ThetaM, Double_t PhiM, Int_t Sector)
{
/* input: phi between 0 and 360 deg */
Double_t phis = PhiM - 60*(Sector-1);
if (phis > 330.) phis = phis - 360;
Int_t bin = (ThetaM - MomC_T_min)/MomC_T_wid;
Double_t ThetaBin = MomC_T_min + MomC_T_wid*(bin+0.5);
Double_t fw = TMath::Abs(ThetaM - ThetaBin) / MomC_T_wid;
Double_t A0 = 0.;
Double_t A1 = 0.;
for (Int_t j=0; j<Npar; j++) {
A0 = A0 + c0_mom[bin][Sector-1][j] *TMath::Power(MomM, j);
A1 = A1 + c1_mom[bin][Sector-1][j] *TMath::Power(MomM, j);
}
Double_t MomC = MomM - (A0 + A1 * phis);
Int_t bin2 = bin + 1;
if (ThetaM < ThetaBin) bin2 = bin - 1;
if (bin2 < 0) bin2 = 0;
if (bin2 >= MomC_T_n) bin2 = MomC_T_n - 1;
Double_t ThetaBin2 = MomC_T_min + MomC_T_wid*(bin2+0.5);
Double_t fw2 = TMath::Abs(ThetaM - ThetaBin2) / MomC_T_wid;
A0 = A1 = 0.;
for (Int_t j=0; j<Npar; j++) {
A0 = A0 + c0_mom[bin2][Sector-1][j] *TMath::Power(MomM, j);
A1 = A1 + c1_mom[bin2][Sector-1][j] *TMath::Power(MomM, j);
}
Double_t MomC2 = MomM - (A0 + A1 * phis);
Double_t Mom = fw2*MomC + fw*MomC2;
//fprintf(stdout, " ----------- \n");
//fprintf(stdout, "T=%lf Tb1=%lf Tb2=%lf b1=%d b2=%d\n", ThetaM, ThetaBin, ThetaBin2, bin, bin2);
//fprintf(stdout, "P=%lf d1=%lf w1=%lf d2=%lf w2=%lf dm=%lf\n", MomM, MomC, fw, MomC2, fw2, Mom);
return Mom;
}
Double_t MomCorr_e1f::mom_corr_pip(Double_t MomM, Double_t ThetaM, Double_t PhiM, Int_t Sector)
{
/* input: phi between 0 and 360 deg */
Double_t phis = PhiM - 60*(Sector-1);
if (phis > 330.) phis = phis - 360;
Int_t bin = (ThetaM - MomC_T_min)/MomC_T_wid;
Double_t ThetaBin = MomC_T_min + MomC_T_wid*(bin+0.5);
Double_t fw = TMath::Abs(ThetaM - ThetaBin) / MomC_T_wid;
Double_t A0 = 0.;
Double_t A1 = 0.;
for (Int_t j=0; j<Npar; j++) {
A0 = A0 + d0_mom[bin][Sector-1][j] *TMath::Power(MomM, j);
A1 = A1 + d1_mom[bin][Sector-1][j] *TMath::Power(MomM, j);
}
Double_t MomC = MomM - (A0 + A1 * phis);
Int_t bin2 = bin + 1;
if (ThetaM < ThetaBin) bin2 = bin - 1;
if (bin2 < 0) bin2 = 0;
if (bin2 >= MomC_T_n) bin2 = MomC_T_n - 1;
Double_t ThetaBin2 = MomC_T_min + MomC_T_wid*(bin2+0.5);
Double_t fw2 = TMath::Abs(ThetaM - ThetaBin2) / MomC_T_wid;
A0 = A1 = 0.;
for (Int_t j=0; j<Npar; j++) {
A0 = A0 + d0_mom[bin2][Sector-1][j] *TMath::Power(MomM, j);
A1 = A1 + d1_mom[bin2][Sector-1][j] *TMath::Power(MomM, j);
}
Double_t MomC2 = MomM - (A0 + A1 * phis);
Double_t Mom = fw2*MomC + fw*MomC2;
//fprintf(stdout, " ----------- \n");
//fprintf(stdout, "T=%lf Tb1=%lf Tb2=%lf b1=%d b2=%d\n", ThetaM, ThetaBin, ThetaBin2, bin, bin2);
//fprintf(stdout, "P=%lf d1=%lf w1=%lf d2=%lf w2=%lf dm=%lf\n", MomM, MomC, fw, MomC2, fw2, Mom);
return Mom;
}
/* ================================================================= */
TLorentzVector MomCorr_e1f::PcorN(TLorentzVector Pin, Int_t charge, Int_t ipart) {
TLorentzVector Pc;
Double_t mass = Pin.M();
Double_t theta = Pin.Theta() * 180./TMath::Pi();
Double_t phi = Pin.Phi() * 180./TMath::Pi();
if (phi < 0) phi = phi + 360.;
Int_t sect = GetSector(phi);
Double_t theta_c = theta_corr(theta, phi, sect);
Double_t mom_c = Pin.P();
if (ipart == 11) {/* ELETTRONE */
mom_c = mom_corr(Pin.P(), theta, phi, sect);
}
else if (ipart == -211) {/* PI- */
mom_c = mom_corr(Pin.P(), theta, phi, sect);
}
else if (ipart == -321) {/* K- */
mom_c = mom_corr(Pin.P(), theta, phi, sect);
}
else if (ipart == 211) {/* PI+ */
mom_c = mom_corr_pip(Pin.P(), theta, phi, sect);
}
else if (ipart == 2212) {/* PROTONE */
mom_c = mom_corr_pip(Pin.P(), theta, phi, sect);
}
else if (ipart == 321) {/* K+ */
mom_c = mom_corr_pip(Pin.P(), theta, phi, sect);
}
Double_t px = mom_c * TMath::Sin(theta_c*TMath::Pi()/180.) * TMath::Cos(Pin.Phi());
Double_t py = mom_c * TMath::Sin(theta_c*TMath::Pi()/180.) * TMath::Sin(Pin.Phi());
Double_t pz = mom_c * TMath::Cos(theta_c*TMath::Pi()/180.);
Pc.SetXYZM(px, py, pz, mass);
return Pc;
}