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# Francesco

18 total contributions since 2012

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Question

ode23t and symplectic Stormer-Verlet integration
I have red in an answer related to simulation of particle motion in magnetic fields that the only ode solver ensuring energy con...

9 years ago | 0 answers | 0

### 0

Question

Modulation transfer function (MTF)
Hi, I'm going to evaluate the MTF of an imaging system. I have a MatLab code and it works fine and my question is not related...

9 years ago | 1 answer | 0

### 1

Question

Help with ion beam with many charge states
I'm simulating an ion beam with different charge states passing through two pinholes. I'm using random angles, from an external...

9 years ago | 0 answers | 0

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Montecarlo method for particle simulation
My beam is moving along z axis for i=1:n K_ion=normrnd(Ein,Ein/10); %energy distribution ...

9 years ago | 0

Montecarlo method for particle simulation
I think I'm making the whole thing too complicate... I give an initial energy Ein and n=1000 particles. the for loop is: ...

9 years ago | 0

Montecarlo method for particle simulation
I was thinking to do something similar. My concern is that I have two pinholes (the second one is 10cm further) Do I need to so...

9 years ago | 0

Question

Montecarlo method for particle simulation
Hi all, I have to simulate a number of particle with a initial random velocity along z axis emitted by a point source and dis...

9 years ago | 4 answers | 0

### 4

Motion of Particle in a spatially varying electromagnetic field
I have found what was wrong in my code, it is able to track a particle all the way long from the source to the detector and insi...

9 years ago | 0

Question

Motion of Particle in a spatially varying electromagnetic field
I have to simulate the motion of particle in an electromagnetic device which deflects particle using electric and magnetic field...

9 years ago | 1 answer | 0

### 1

Question

second order differential equation with variable coefficient
Hi, As wrote in a previous question I have to solve the equation: d^2x/dt^2= (q/m)(E/v^2) I have wrote the following code...

9 years ago | 0 answers | 0

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Question

Differential equation.
I have to solve two differential equation and I have used the following code: inits='y(0)=0, Dy(0)=0, x(0)=0, Dx(0)=0'; ...

9 years ago | 0 answers | 0

### 0

Question

Particle motion in electromagnetic field
I have to write a MATLAB script to simulate the motion of particle in a spectrometer using the differential equations of motion....

9 years ago | 2 answers | 0

### 2

Use pixel informations to create a grid on images
I managed to improve the graphic aspect, now I was wondering if it is possible to make the grid with rounded shape and a fixed r...

9 years ago | 0

Use pixel informations to create a grid on images
I managed to get the central pixel coordinates [X0,Y0] (using ginput) and the distance between two points (using imdistline). I...

9 years ago | 0

Problem with a plot
I tried with this code, but nothing change, whati is wrong? set(gca,'Box','off'); axesUnits=get(gca,'Units'); axesPosit...

9 years ago | 0

Problem with a plot
The code I used for plotting data is: figure(1) hplot = plot(.... ) xlabel(gca, 'Deflessione magnetica [m]'); % label l...

9 years ago | 0

Question

Use pixel informations to create a grid on images
Hi, I have an picture of graph paper I have to use as a reference. To be clear I have to use the grid as calibration for an ...

9 years ago | 3 answers | 0