-- Mass of particules : 1.6726e-27 br -- Charge of particles : 1.6022e-19 br -- Permittivity of free space : 8.8542e-12 br -- Light velocity : 2.9979e+08 br -- Energy of the beam (eV) : 5000000 br -- Current of the beam (A) : 0.1 br -- Lenght of one period (m) : 0.4196 br -- x radius of the beam (m) : 0.0099548918 br -- y radius of the beam (m) : 0.0099548918 br -- Tune depression in x : 0.700342 br -- Tune depression in y : 0.