ZGOUBI USERS' GUIDE - HEP

4.3 Declaration of options 55PARTICUL: Particle characteristicsPARTICUL allows the definition of several characteristics of the particles (mass, charge, gyromagnetic factor and lifetimein the center of mass), that are needed in various procedures as,MCDESINT: mass, COM life-timeSPNTRK: mass, gyromagnetic factorSRLOSS: mass, chargeSYNRAD: mass, chargeElectric and Electro-Magnetic elements : mass, chargeThe declaration of PARTICUL must precede these keywords.Note that, in the case of electric or electro-magnetic optical elements, the mass and charge are needed in order to computethe particle velocity , as involved in eq. 1.2.3.