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/*
* AcceleratorBenchmarkTest.cc
*
* Created on: May 2, 2011
* Author: jakob
*/
#include <iostream>
#include <cmath>
#include <vector>
#include <stdlib.h>
#include "exceptions.h"
#include "Accelerator.h"
#include "StraightElement.h"
#include "Dipole.h"
#include "Particle.h"
#include "FODO.h"
#include "Vector3D.h"
#include "constants.h"
using namespace vhc;
using namespace std;
std::vector< Particle > createParticles(const Vector3D& position, int n, double mass = constants::ELECTRON_MASS, double charge = constants::E, double energy = 1E9 * constants::E, Vector3D direction = -Vector3D::j) {
std::vector< Particle > v;
double r = 0.1;
for (int i = 0; i < n; ++i) {
double x = (rand() % 1000) / 1000.0 * r;
double y = (rand() % 1000) / 1000.0 * sqrt(r * r - x * x);
double z = (rand() % 1000) / 1000.0 * sqrt(r * r - y * y - x * x);
v.push_back(Particle(position + Vector3D(x, y, z), mass, charge, energy, direction));
}
return v;
}
Accelerator* standard() {
double B = 5.8915820038873;
double b = 1.2;
FODO e1 = FODO(Vector3D(3, 2, 0), Vector3D(3, -2, 0), 0.1, 1.0, b);
Dipole e2 = Dipole(e1.getExitPosition(), Vector3D(2, -3, 0), 0.1, 1, Vector3D(0, 0, B));
FODO e3 = FODO(e2.getExitPosition(), Vector3D(-2, -3, 0), 0.1, 1, b);
Dipole e4 = Dipole(e3.getExitPosition(), Vector3D(-3, -2, 0), 0.1, 1, Vector3D(0, 0, B));
FODO e5 = FODO(e4.getExitPosition(), Vector3D(-3, 2, 0), 0.1, 1.0, b);
Dipole e6 = Dipole(e5.getExitPosition(), Vector3D(-2, 3, 0), 0.1, 1, Vector3D(0, 0, B));
FODO e7 = FODO(e6.getExitPosition(), Vector3D(2, 3, 0), 0.1, 1.0, b);
Dipole e8 = Dipole(e7.getExitPosition(), e1.getEntryPosition(), 0.1, 1, Vector3D(0, 0, B));
Accelerator* acc = new Accelerator();
acc->add(e1);
acc->add(e2);
acc->add(e3);
acc->add(e4);
acc->add(e5);
acc->add(e6);
acc->add(e7);
acc->add(e8);
acc->close();
Particle p1 = Particle(Vector3D(3.00, 0, 0), constants::PROTON_MASS, constants::E, 2 * constants::GeV, -Vector3D::j);
Particle p2 = Particle(Vector3D(2.99, 0, 0), constants::PROTON_MASS, constants::E, 2 * constants::GeV, -Vector3D::j);
acc->add(p1);
acc->add(p2);
std::vector< Particle > ps = createParticles(e1.getEntryPosition(), 10000);
for (int i = 0; i < ps.size(); ++i) {
acc->add(ps[i]);
}
return acc;
}
Accelerator* accelerator;
int main() {
accelerator = standard();
int steps = 1000;
double dt = 1E-11;
cout << "Simulating " << steps << " steps with " << accelerator->getParticles().size() << " particles...";
cout.flush();
int t0 = clock();
for (int i = 0; i < steps; ++i) {
accelerator->step(dt);
}
int t1 = clock() - t0;
cout << "DONE" << endl;
cout << "Time taken: " << t1 << " ticks @ " << CLOCKS_PER_SEC << " ticks/s ~ " << 1.0 * t1 / CLOCKS_PER_SEC << "s" << endl;
cout << "Average: " << 1.0 * t1 / CLOCKS_PER_SEC / steps << " s/step" << endl;
cout << "Average: " << 1.0 * t1 / CLOCKS_PER_SEC / steps / accelerator->getParticles().size() << " s/step/particle" << endl;
return 0;
}
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