rtang/ANASEN_analysis
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new eloss function

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This commit is contained in:
James Szalkie 2026-05-11 12:57:30 -04:00
parent 8cf637d0dd
commit 36f9958562
2 changed files with 30 additions and 12 deletions
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4
Armory/aarootscript.C
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@ -46,10 +46,10 @@ void aarootscript(int argument = 0) {
std::cout << "Zero Count: " << zeroCount << std::endl;
//std::cout << "Making histograms..." << std::endl;
std::cout << "Making histograms..." << std::endl;
gErrorIgnoreLevel = 2001;
//gROOT->ProcessLine(".x histcomp.C");
gROOT->ProcessLine(".x histcomp.C");
std::cout << "=========================================\n";

38
Armory/anasenMS.cpp
View File

@ -12,6 +12,8 @@
#include "ClassTransfer.h" // Reaction kinematics and MC event generation
#include "ClassAnasen.h" // ANASEN detector model classes (SX3, PW, etc.)
#include "TCanvas.h" // ROOT canvas for drawing
#include <stdio.h>
#include <stdlib.h>
//======== Generate light particle based on reaction
// calculate real and reconstructed tracks and Q-value uncertainty
@ -31,18 +33,22 @@ int main(int argc, char **argv){
// number of events can be overridden from command line
int numEvent = 1000000;
if( argc >= 2 ) numEvent = atoi(argv[1]);
// load energy loss tables (assume units: E in MeV, dE/dx in MeV/(mg/cm²), density in mg/cm³)
TGraph* elossLight = LoadELoss("../ELoss/Eloss_HeAlpha"); // for light particle (alpha)
//double density = (2.1525e-7) * 1000; // example for aluminum target, adjust as needed (400 torr is 0.0000861)
//char command[256];
//snprintf(command, sizeof(command), "python3 ../ELoss/EvXconverter.py %f", density);
//printf("Command: %s\n", command);
//system(command); // run the conversion script to generate energy loss tables with correct density
// load energy loss tables (assume units: E in MeV, dE/dx in MeV/(mg/cm^2), density in mg/cm^3)
TGraph* elossLight = LoadELoss("../ELoss/E_vs_x_light"); // for light particle (alpha)
TGraph* elossHeavy = LoadELoss("../ELoss/Eloss_p"); // for heavy particle (proton)
double density = (2.1525e-7) * 400; // example for aluminum target, adjust as needed (400 torr is 0.0000861)
auto c1 = new TCanvas("c1", "Graph Example", 800, 600);
auto g = elossLight;
g->SetTitle("Energy Loss Table;Kinetic Energy (MeV);dE/dx (MeV/(mg/cm^{2}))");
g->SetTitle("Energy Loss Table;cm;Kinetic Energy (MeV)");
g->Draw("ALP");
g->SetLineColor(kRed);
c1->SetLogy();
c1->SetLogx();
//c1->SetLogy();
//c1->SetLogx();
c1->Print("eloss_light.png");
int ELossTotal = 0;
@ -129,12 +135,14 @@ int main(int argc, char **argv){
// outgoing particles in lab frame (light/heavy)
double thetab, phib, Tb;
double thetaB, phiB, TB;
double dEb;
tree->Branch("thetab", &thetab, "thetab/D");
tree->Branch("phib", &phib, "phib/D");
tree->Branch("Tb", &Tb, "Tb/D");
tree->Branch("thetaB", &thetaB, "thetaB/D");
tree->Branch("phiB", &phiB, "phiB/D");
tree->Branch("TB", &TB, "TB/D");
tree->Branch("dEb", &dEb, "dEb/D");
// excitation state identifiers
int ExAID;
@ -297,6 +305,7 @@ int main(int argc, char **argv){
rePhi1 = pw->GetTrackPhi() * TMath::RadToDeg();
z0 = pw->GetZ0();
dEb = 0;
tree->Fill();
//Energy loss
double dl = (hitPos - vertex).Mag() / 10; // path length in cm (positions in mm)
@ -304,9 +313,10 @@ int main(int argc, char **argv){
printf("Event %d: Ekin before loss = %f MeV, distance = %f cm\n", i, Tb, dl);
}
double tb_temp = Tb;
double dx = 0;
double counter = 0;
while(dx < dl){
//double dx = 0;
//double counter = 0;
//energy loss loop
/*while(dx < dl){
double step = 0.1; // cm, step size for energy loss calculation
if(dx + step > dl) step = dl - dx; // adjust last step to end at hit position
double EkinStep = Tb; // kinetic energy at current step
@ -324,6 +334,13 @@ int main(int argc, char **argv){
break;
}
}
dEb = tb_temp - Tb; // total energy loss*/
TGraph *invg = new TGraph(elossLight->GetN(), elossLight->GetY(), elossLight->GetX());
double x0 = invg->Eval(Tb);
//double x0 = elossLight->GetX(Tb); // range corresponding to final kinetic energy
x0 = x0 + dl;
Tb = elossLight->Eval(x0); // kinetic energy corresponding to range at hit position
dEb = tb_temp - Tb; // total energy loss
// fill tree2 with energy loss adjusted data
if (Tb != 0) {
tree2->Fill();
@ -349,6 +366,7 @@ int main(int argc, char **argv){
reTheta1 = TMath::QuietNaN();
rePhi1 = TMath::QuietNaN();
z0 = TMath::QuietNaN();
dEb = TMath::QuietNaN();
//Tb = -12354567; // mark kinetic energy as invalid for no hit case
// fill tree with original data (no energy loss for these events)
//tree->Fill();