Microtron

The SESAME pre-injector is a classical 22 MeV Microtron (MM22) that emits and accelerates the electrons up to 20MeV as required. The electrons are extracted from the LaB6 crystal using a 4µs long and 63kV magnitude voltage pulse and injected into the 3GHz RF cavity which accelerates them at a rate ~ 0.535 MeV each turn using a 4µs long and 45kV magnitude RF pulse. After ~ 39 turns, the 20MeV electrons are extracted from the Microtron using a ‘deflection tube’ and transferred to the Booster through the transfer line TL1.