Electron beam energy detector for particle accelerators - measures electron time in accelerating field using detector and clock pulse counter

摘要

The electron beam energy detector, for particle accelerators (eg betatrons and linacs), measures the electron acceleration time and uses this as a basis for indicating the energy of the emerging beam. A first signal (9) is generated that characterises a given accelerating field distribution and the time between this signal and a signal received from a particle detector (7) at the accelerator output is measured by counting clock pulses (17). Fluctuations in the accelerating field are taken account of by a coil (36) in this field and coupled to the input of a voltage frequency converter that acts as the pulse generator.