Skip to content
Snippets Groups Projects
Commit 737addac authored by Charlie Paxman's avatar Charlie Paxman
Browse files

* Revamped beam spot minimiser 

 - Now using ROOT::Math minimizer.
 - Requires ROOT's minuit2 build flag to be on.
parent f7d038b2
No related branches found
No related tags found
No related merge requests found
Pipeline #122523 passed
Stage: build-NPLib
Stage: build-NPSimulation
Stage: test
Hide whitespace changes
Inline Side-by-side
Projects/e793s/macro/BeamSpot/EventReader.C
+ 2
− 3
View file @ 737addac
......@@ -20,8 +20,7 @@ using namespace std;
void EventReader(){
// Read ROOT file and pull the tree
//auto DataFile = new TFile("../../../../Outputs/Analysis/47K_RawEnergyBranch_Run63_May11.root", "READ");
auto DataFile = new TFile("../../../../Outputs/Analysis/47K_RawEnergyBranch_Full_May11.root", "READ");
auto DataFile = new TFile("../../../../Outputs/Analysis/47K_Full_02June.root", "READ");
auto PhysTree = (TTree*) DataFile->FindObjectAny("PhysicsTree");
// Initilise the Mugast branch
......@@ -56,7 +55,7 @@ void EventReader(){
// Open output file
ofstream outfile;
outfile.open("./XYZE_gammaGated_Full.txt");
outfile.open("./XYZE_Full_02June.txt");
// Loop on entries
for(unsigned int i=0; i<numEntries; i++){
......
Projects/e793s/macro/BeamSpot/MinimizeBeamSpot.cxx 0 → 100644
+ 132
− 0
View file @ 737addac
#include "MinimizeBeamSpot.h"
double devE(const double* parameter){
//Beam energy: 7.7 [MeV/A] * 47 [A] = 361.9 [MeV]
static NPL::Reaction reaction("47K(d,p)48K@362");
//Beam spot offset
TVector3 offset(parameter[0],parameter[1],parameter[2]);
unsigned int size = pos.size();
double dE,Theta;
TVector3 dir;
//Initilize histogram
h->Reset();
h1->Reset();
h2->Reset();
h3->Reset();
h4->Reset();
h5->Reset();
h7->Reset();
//Loop over events
for(unsigned int i = 0 ; i < size ; i++){
//Particle path vector
dir=*(pos[i])-offset;
//Detected energy, and angle of particle leaving target
double Theta= dir.Angle(TVector3(0,0,1));
double Energy = energy[i];
//NOTE!!! Not calucualting energy loss in Al???
//Energy loss in target
Energy=CD2.EvaluateInitialEnergy(
Energy, //energy after leaving target
0.5*parameter[4]*micrometer, //pass through half target
Theta); //angle leaving target
//Final value of Ex
double Ex = reaction.ReconstructRelativistic(Energy,Theta);
//Fill histogram with ERROR in Ex!
//h->Fill(Ex-refE);
h->Fill(Ex);
switch(detnum[i]){
case 1:
h1->Fill(Ex);
break;
case 2:
h2->Fill(Ex);
break;
case 3:
h3->Fill(Ex);
break;
case 4:
h4->Fill(Ex);
break;
case 5:
h5->Fill(Ex);
break;
case 7:
h7->Fill(Ex);
break;
default:
cout << "ERROR! Invalid detnum: " << detnum[i] << " @" << i << endl;
return 1; // Exit code
}
}
//End loop over events
//Write vals to screen
cout << "Mean: " << h->GetMean()
<< "\t StdDev: " << h->GetStdDev()
<< "\t Thickness??: " << parameter[4]
<< endl;
//Draw histogram(s)
h->Draw();
if(flagDraw){ InitiliseCanvas(); }
//Adapt the metric as needed
return sqrt( pow(h->GetMean()-refE,2) + pow(0.1*h->GetStdDev(),2) );
}
////////////////////////////////////////////////////////////////////////////////
void MinimizeBeamSpot(){
// Read data in
LoadFile();
// Start with beam (0,0,0) and 4.7um 0.5mg/c2 target
double parameter[4] = {0.0, 0.0, 0.0, 4.7};
devE(parameter);
// Function with 4 parameter XYZ and Target thickness
auto func = ROOT::Math::Functor(&devE,4);
// Minimizer
auto minim = ROOT::Math::Factory::CreateMinimizer("Minuit2","Migrad");
minim->SetPrintLevel(0);
minim->SetPrecision(1e-10);
// Set minimizer function
minim->SetFunction(func);
// Assign variable limits
minim->SetLimitedVariable(0,"X",parameter[0],0.01,-10,10);
minim->SetLimitedVariable(1,"Y",parameter[1],0.01,-10,10);
minim->SetLimitedVariable(2,"Z",parameter[2],0.01,-5,5);
minim->SetLimitedVariable(3,"T",parameter[3],0.01, 4.7-3.0, 4.7+3.0);
// Don't draw iterations of minimizer
flagDraw = 0;
// Shrink it, babeyyy
minim->Minimize();
// Draw minimal value
flagDraw = 1;
// Pull values from minimizer
const double* x = minim->X();
cout << "========================================" << endl;
cout << "\t\tX =" << x[0] << endl;
cout << "\t\tY =" << x[1] << endl;
cout << "\t\tZ =" << x[2] << endl;
cout << "\t\tT =" << x[3] << endl;
cout << "Minimum: " << devE(x) << endl;
cout << "========================================" << endl;
}
Projects/e793s/macro/BeamSpot/MinimizeBeamSpot.h 0 → 100644
+ 135
− 0
View file @ 737addac
#include "Math/Minimizer.h"
#include "Math/Factory.h"
#include "Math/Functor.h"
#include "TRandom2.h"
#include "TError.h"
#include <iostream>
double refE = 0.143; // the energy of the selected states
vector<TVector3*> pos;
vector<double> energy;
vector<int> detnum;
NPL::EnergyLoss CD2("proton_CD2.G4table","G4Table",100);
NPL::EnergyLoss Al("proton_Al.G4table","G4Table",100);
using namespace std;
bool flagDraw = 0;
static auto h = new TH1D("h","h", 80,-1.,1.);
static auto h1 = new TH1D("h1","h1", 40,-1.,1.);
static auto h2 = new TH1D("h2","h2", 40,-1.,1.);
static auto h3 = new TH1D("h3","h3", 40,-1.,1.);
static auto h4 = new TH1D("h4","h4", 40,-1.,1.);
static auto h5 = new TH1D("h5","h5", 40,-1.,1.);
static auto h7 = new TH1D("h7","h7", 40,-1.,1.);
////////////////////////////////////////////////////////////////////////////////
void LoadFile(){
// Open XYZE gamma-gated file
ifstream file("XYZE_Full_02June.txt");
if(!file.is_open()){
cout << "fail to load file" << endl;
exit(1);
}
else {
cout << "Success opening file" << endl;
}
// Read in
int mg;
double x,y,z,e;
while(file >> mg >> x >> y >> z >> e ){
auto p = new TVector3(x,y,z);
detnum.push_back(mg);
pos.push_back(p);
energy.push_back(e);
}
file.close();
}
////////////////////////////////////////////////////////////////////////////////
void InitiliseCanvas(){
TCanvas *canv = new TCanvas("canv","Ex Histograms",20,20,1600,800);
gStyle->SetOptStat(0);
canv->Divide(2,1,0.005,0.005,0);
canv->cd(1)->SetLeftMargin(0.15);
canv->cd(1)->SetBottomMargin(0.15);
gPad->SetTickx();
gPad->SetTicky();
canv->cd(2)->SetLeftMargin(0.15);
canv->cd(2)->SetBottomMargin(0.15);
gPad->SetTickx();
gPad->SetTicky();
canv->cd(1);
h1->SetMaximum(75.);
h1->GetXaxis()->SetTitle("Ex [MeV]");
h1->GetYaxis()->SetTitle("Counts");
// ----- MG1 -----
h1->SetStats(0);
h1->SetLineColor(kRed);
h1->SetFillStyle(3244);
h1->SetFillColor(kRed);
h1->Draw();
h1->Fit("gaus","WQ"); //add N to stop it drawing
// ----- MG2 -----
h2->SetStats(0);
h2->SetLineColor(kOrange);
h2->SetFillStyle(3244);
h2->SetFillColor(kOrange);
h2->Draw("same");
h2->Fit("gaus","WQ"); //add N to stop it drawing
// ----- MG3 -----
h3->SetStats(0);
h3->SetLineColor(kGreen);
h3->SetFillStyle(3344);
h3->SetFillColor(kGreen);
h3->Draw("same");
h3->Fit("gaus","WQ"); //add N to stop it drawing
// ----- MG4 -----
h4->SetStats(0);
h4->SetLineColor(kTeal);
h4->SetFillStyle(3444);
h4->SetFillColor(kTeal);
h4->Draw("same");
h4->Fit("gaus","WQ"); //add N to stop it drawing
// ----- MG5 -----
h5->SetStats(0);
h5->SetLineColor(kBlue);
h5->SetFillStyle(3544);
h5->SetFillColor(kBlue);
h5->Draw("same");
h5->Fit("gaus","WQ"); //add N to stop it drawing
// ----- MG7 -----
h7->SetStats(0);
h7->SetLineColor(kViolet);
h7->SetFillStyle(3644);
h7->SetFillColor(kViolet);
h7->Draw("same");
h7->Fit("gaus","WQ"); //add N to stop it drawing
// Format legend
auto legend = new TLegend(0.15,0.7,0.35,0.9);
legend->AddEntry(h1,"MUGAST 1","f");
legend->AddEntry(h2,"MUGAST 2","f");
legend->AddEntry(h3,"MUGAST 3","f");
legend->AddEntry(h4,"MUGAST 4","f");
legend->AddEntry(h5,"MUGAST 5","f");
legend->AddEntry(h7,"MUGAST 7","f");
legend->Draw();
// ----- ALL -----
canv->cd(2);
h->SetStats(0);
h->GetXaxis()->SetTitle("Ex [MeV]");
h->GetYaxis()->SetTitle("Counts");
h->Draw();
h->Fit("gaus", "WQ");
gPad->Update();
}
////////////////////////////////////////////////////////////////////////////////
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Please register or to comment