Penning Trap Simulation
Simulate particle behavior inside a Penning Trap
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PenningTrap.hpp
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1
12#ifndef __PENNING_TRAP__
13#define __PENNING_TRAP__
14
15#include <armadillo>
16#include <omp.h>
17
18#include "Particle.hpp"
19#include "constants.hpp"
20
21#pragma omp declare reduction( + : arma::vec : omp_out += omp_in ) \
22 initializer( omp_priv = omp_orig )
23
30private:
31 double B_0;
32 double V_0;
33 double d;
34 std::vector<Particle> particles;
35
36public:
39 PenningTrap(double B_0 = T, double V_0 = 25.*V/1000., double d = 500.);
40
43 void add_particle(Particle particle);
44
47 arma::vec external_E_field(arma::vec r);
48
51 arma::vec external_B_field(arma::vec r);
52
58 arma::vec force_on_particle(int i, int j);
59
65 arma::vec total_force_external(int i);
66
69 arma::vec total_force_particles(int i);
70
73 arma::vec total_force(int i);
74
77 void evolve_RK4(double dt);
78
81 void evolve_forward_euler(double dt);
82
83 arma::vec get_particle(int i);
84
85 double get_d();
86};
87
88#endif
A class that holds the properties of a particle.
A class that holds attributes of a particle.
Definition: Particle.hpp:19
A class that simulates a Penning trap.
Definition: PenningTrap.hpp:29
std::vector< Particle > particles
The particles in the Penning trap.
Definition: PenningTrap.hpp:34
arma::vec total_force_external(int i)
Calculate the total external force on a particle.
Definition: PenningTrap.cpp:65
double B_0
Magnetic field strength.
Definition: PenningTrap.hpp:31
arma::vec total_force_particles(int i)
Calculate the total force on a particle from other particles.
Definition: PenningTrap.cpp:80
arma::vec external_B_field(arma::vec r)
Calculate B at point r.
Definition: PenningTrap.cpp:43
arma::vec force_on_particle(int i, int j)
Calculate the force between 2 particles.
Definition: PenningTrap.cpp:50
void evolve_forward_euler(double dt)
Go forward one timestep using the forward Euler method.
double d
Characteristic dimension.
Definition: PenningTrap.hpp:33
void add_particle(Particle particle)
Add a particle to the system.
Definition: PenningTrap.cpp:27
double V_0
Applied potential.
Definition: PenningTrap.hpp:32
arma::vec total_force(int i)
calculate the total force on a particle.
Definition: PenningTrap.cpp:99
arma::vec external_E_field(arma::vec r)
Calculate E at point r.
Definition: PenningTrap.cpp:32
void evolve_RK4(double dt)
Go forward one timestep using the RK4 method.
Library of constants.
#define T
1 Tesla. unit:
Definition: constants.hpp:17
#define V
1 Volt. unit:
Definition: constants.hpp:19