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/*
* Beam.cc
*
* Created on: May 6, 2011
* Author: jakob
*/
#include <math.h>
#include "Beam.h"
#include "Element.h"
using namespace std;
namespace vhc {
Beam::Beam(const Particle& referenceParticle, int quantity, int lambda):
referenceParticle(referenceParticle),
quantity(quantity),
lambda(lambda) {}
Beam::~Beam() {
clear();
}
void Beam::add(Particle* particle) {
particles.push_back(particle);
Publisher<ParticleAddedEvent>::publish(ParticleAddedEvent(this, particle));
}
void Beam::remove(Particle* particle) {
Publisher<ParticleRemovedEvent>::publish(ParticleRemovedEvent(this, particle));
delete particle;
particle = NULL;
particles.remove(particle);
}
Beam::ParticleCollection::iterator Beam::erase(Beam::ParticleCollection::iterator i) {
Publisher<ParticleRemovedEvent>::publish(ParticleRemovedEvent(this, *i));
delete *i;
*i = NULL;
return particles.erase(i);
}
void Beam::clear() {
for (ParticleCollection::iterator i = particles.begin(); i != particles.end(); ++i) {
i = erase(i);
--i;
}
particles.clear();
}
int Beam::getQuantity() const {
return quantity;
}
int Beam::getSize() const {
return particles.size();
}
int Beam::getLambda() const {
return lambda;
}
Particle& Beam::getReferenceParticle() {
return referenceParticle;
}
Beam::ParticleCollection& Beam::getParticles() {return particles;}
void Beam::updateParticles() {
for (ParticleCollection::iterator i = particles.begin(); i != particles.end(); ++i) {
Particle& particle = **i;
if (particle.getElement()->isAfter(particle)) {
if (particle.getElement()->getNext() == NULL) {
i = erase(i);
--i;
//cout << "Particle reached end of accelerator. Removed from simulation" << std::endl;
} else particle.setElement(particle.getElement()->getNext());
} else if (particle.getElement()->isBefore(particle)) {
if (particle.getElement()->getPrevious() == NULL) {
i = erase(i);
--i;
//cout << "Particle reached beginning of accelerator. Removed from simulation" << std::endl;
} else particle.setElement(particle.getElement()->getPrevious());
} else if (particle.getElement()->isBeside(particle)) {
//std::cout << "Particle hit wall. Removed from simulation" << std::endl;
i = erase(i);
--i;
}
}
}
void Beam::step(double dt) {
for (ParticleCollection::iterator i = particles.begin(); i != particles.end(); ++i) {
Particle& particle = **i;
particle.applyMagneticForce(particle.getElement()->magneticFieldAt(particle.getPosition()), dt);
Vector3D a = particle.getForce() / (particle.getGamma() * particle.getMass());
particle.setVelocity(particle.getVelocity() + a * dt);
particle.translate(particle.getVelocity() * dt);
particle.setForce(Vector3D::Null);
}
updateParticles();
}
double Beam::getVR2() const {
double z2 = 0;
for (list<Particle*>::const_iterator i = particles.begin(); i != particles.end(); ++i) {
z2 += (**i).getPosition().getZ() * (**i).getPosition().getZ();
}
return sqrt(z2 / particles.size());
}
double Beam::getVV2() const {
double v2 = 0;
for (list<Particle*>::const_iterator i = particles.begin(); i != particles.end(); ++i) {
v2 += (**i).getVelocity().getZ() * (**i).getVelocity().getZ();
}
return v2 / particles.size();
}
double Beam::getVRV2() const {
double vz = 0;
for (list<Particle*>::const_iterator i = particles.begin(); i != particles.end(); ++i) {
vz += (**i).getPosition().getZ();
}
return (vz / particles.size()) * (vz / particles.size());
}
double Beam::getHR2() const {
double r2 = 0;
for (list<Particle*>::const_iterator i = particles.begin(); i != particles.end(); ++i) {
Vector3D u = ((**i).getElement())->getHorizontalAt((**i).getPosition());
r2 += (**i).getPosition().dot(u) * (**i).getPosition().dot(u);
}
return r2 / particles.size();
}
double Beam::getHV2() const {
double v2 = 0;
for (list<Particle*>::const_iterator i = particles.begin(); i != particles.end(); ++i) {
Vector3D u = ((**i).getElement())->getHorizontalAt((**i).getPosition());
v2 += (**i).getVelocity().dot(u) * (**i).getVelocity().dot(u);
}
return v2 / particles.size();
}
double Beam::getHRV2() const {
double vr = 0;
for (list<Particle*>::const_iterator i = particles.begin(); i != particles.end(); ++i) {
Vector3D u = ((**i).getElement())->getHorizontalAt((**i).getPosition());
vr += (**i).getPosition().dot(u) * (**i).getVelocity().dot(u);
}
return (vr / particles.size()) * (vr / particles.size());
}
double Beam::getAverageEnergy() const {
double e = 0;
for (list<Particle*>::const_iterator i = particles.begin(); i != particles.end(); ++i) {
e += (**i).getEnergy();
}
return e / particles.size();
}
double Beam::getVerticalEmittance() const {
return sqrt(getVR2() * getVV2() - getVRV2());
}
double Beam::getHorizontalEmittance() const {
return sqrt(getHR2() * getHV2() - getHRV2());
}
double Beam::getVerticalA11() const {
return getVR2() / getVerticalEmittance();
}
double Beam::getVerticalA12() const {
return -getVRV2() / getVerticalEmittance();
}
double Beam::getVerticalA22() const {
return getVV2() / getVerticalEmittance();
}
double Beam::getHorizontalA11() const {
return getHR2() / getHorizontalEmittance();
}
double Beam::getHorizontalA12() const {
return -getHRV2() / getVerticalEmittance();
}
double Beam::getHorizontalA22() const {
return getHV2() / getHorizontalEmittance();
}
}
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