simpleTest

Introduction

In this example we are going to solve a simple FODO lattice.

Define the elements

Define the geometrical parameters

 quadrupoleLength=5;
 cellLength=100;

Define the gradient

 myK=2.8/cellLength/quadrupoleLength;

Define the quadrupoles

 QF: quadrupole, L=quadrupoleLength, K1=myK;
 QD: quadrupole, L=quadrupoleLength, K1=-myK;

Define the sequence

 myCell:sequence, refer=entry, L=cellLength;
 q1: QF, at=0;
 q2: QD, at=cellLength/2;
 endsequence;

Define the beam

 beam, particle=proton, energy=7000;

Twiss the sequence

 use, sequence=myCell;
 twiss, file="myFirstTwiss.txt";
 plot, haxis=s, vaxis=betx,bety,dx,colour=100, title="First plot";
 value, myK;

Python data extraction

# python code
pythonDictionary['twiss']=madx.table.twiss.dframe()

End

 stop;