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poincare.cpp
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poincare.cpp
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#include <iostream>
#include <fstream>
#include "MerlinVersion.h"
#include "settings.h"
#include "accelerator_sim.h"
#include "ParticleTracker.h"
#include "SymplecticIntegrators.h"
#include "ProtonBunch.h"
//#include "IonBunch.h"
#include "ParticleDistributionGenerator.h"
using namespace std;
using namespace ParticleTracking;
class PoincareDistributionGenerator: public ParticleDistributionGenerator
{
public:
PoincareDistributionGenerator(double min, double step_size, char plane, vector<double> * al):
pmin(min), pstep_size(step_size), pplane(plane), amplitude_list(al)
{
if(pplane != 'x' && pplane != 'y')
{
cout << "PoincareDistributionGenerator: plane must be 'x' or 'y'" <<endl;
exit(1);
}
amplitude_list->clear();
amplitude_list->push_back(0);
}
virtual PSvector GenerateFromDistribution() const;
private:
double pmin, pstep_size;
char pplane;
mutable int count = 1;
vector<double> * amplitude_list;
};
PSvector PoincareDistributionGenerator::GenerateFromDistribution() const
{
PSvector p(0);
double pos = pmin + pstep_size * count;
cout << "PDG: count = "<< count << " pos = " << pos << endl;
if(pplane == 'x')
{
p.x() = pos;
}
else if (pplane == 'y')
{
p.y() = pos;
}
amplitude_list->push_back(pos);
count += 1;
return p;
}
int main(int argc, char** argv)
{
cout << merlin_version_info();
cout << "Loss map" << endl;
string settings_file;
if (argc >= 2)
{
settings_file = argv[1];
}else
{
cout << "Please give settings file" << endl;
return 1;
}
Settings settings(settings_file);
settings.parse_arguments(argc, argv);
cout << "Settings:" << endl;
string run_name = settings[ "run_name" ];
cout << "run_name = " << run_name << endl;
const string log_dir = settings.get("log_dir", "logs/");
const string input_data_dir = settings.get("input_data_dir", "commondata/");
const string result_dir = settings.get("result_dir", "results/");
cout << "log_dir = " << log_dir << endl;
cout << "input_data_dir = " << input_data_dir << endl;
cout << "result_dir = " << result_dir << endl;
string start_element = settings["start_element"];
cout << "start_element = " << start_element << endl;
const string tracking_integrator = settings.get("tracking_integrator", "symplectic");
cout << "tracking_integrator = " << tracking_integrator << endl;
int nturns = settings.get_int("nturns");
cout << "nturns: " << nturns<< endl;
auto accsim = std::make_unique<AcceleratorSim>(&settings);
accsim->build_lattice();
accsim->set_start_element(start_element);
cout << "Found start element '" << start_element << "' at position " << accsim->start_element_number << endl;
accsim->get_lattice_functions();
AcceleratorModel::RingIterator bline = accsim->model->GetRing(accsim->start_element_number);
BeamData mybeam = accsim->get_beam_data();
mybeam.charge = accsim->beam_charge;
double poincare_min = settings.get_double("poincare_min", 0);
double poincare_max = settings.get_double("poincare_max");
double poincare_steps = settings.get_int("poincare_steps");
cout << "poincare_min = " << poincare_min << endl;
cout << "poincare_max = " << poincare_max << endl;
cout << "poincare_steps = " << poincare_steps << endl;
double poincare_step_size = (poincare_max - poincare_min) / (poincare_steps - 1);
cout << "poincare_step_size = " << poincare_step_size << endl;
for(char plane: {'x', 'y'})
{
vector<double> amplitude_list;
auto myBunch = make_unique<ParticleBunch>(poincare_steps,
PoincareDistributionGenerator(poincare_min, poincare_step_size, plane, &litude_list), mybeam, nullptr);
ParticleTracker* tracker = new ParticleTracker(bline,myBunch.get());
tracker->SetLogStream(std::cout);
if (tracking_integrator == "symplectic")
{
tracker->SetIntegratorSet(new ParticleTracking::SYMPLECTIC::StdISet());
}
else if (tracking_integrator == "transport")
{
tracker->SetIntegratorSet(new ParticleTracking::TRANSPORT::StdISet());
}
else if (tracking_integrator == "thinlens")
{
tracker->SetIntegratorSet(new ParticleTracking::THIN_LENS::StdISet());
}
else
{
cerr << "Unknown tracking_integrator:" << tracking_integrator <<endl;
exit(1);
}
string pout_fname = result_dir+"/poincare_"+ plane + "_" + run_name + ".dat";
ofstream pout(pout_fname);
pout << "#turn id x xp y yp ct dp init_amp\n";
pout << "#poincare min:"<< poincare_min << " max:"<< poincare_max << " steps:"<< poincare_steps <<"\n";
pout << "#beam alpha_x:"<< mybeam.alpha_x << " beta_x:"<< mybeam.beta_x << " gamma_x:"<< mybeam.gamma_x() << " emit_x:" << mybeam.emit_x<< " alpha_y:"<< mybeam.alpha_y << " beta_y:"<< mybeam.beta_y << " gamma_y:"<< mybeam.gamma_y() << " emit_y:" << mybeam.emit_y <<"\n";
for(int n = 0; n < nturns; n++)
{
for(auto &p: myBunch->GetParticles())
{
pout.precision(15);
pout << n << " " << p.id() << " " <<p.x() << " " <<p.xp() << " "<<p.y() << " "<<p.yp() << " "<<p.ct() << " "<<p.dp() << " " << amplitude_list.at(p.id()) <<endl;
}
tracker->Track(myBunch.get());
}
cout << "Wrote " << pout_fname <<endl;
}
}