An on-line electron beam energy measurement technique

An on-line electron beam energy measurement technique was designed for the beam characteristics of linear induction accelerator. In this technique the slice average energy of the electron beam was measured by beam position monitors and magnetic analyzer, which can avoid the errors in beam bunch sampling as well as the influence of measurement process on the beam and can achieve the on-line measurement. This method was applied in the measurement of electron energy for a high current linear induction accelerator and the slice average energy time curve was obtained, with the energy measurement uncertainty of 0.177 MeV and the energy spread measurement uncertainty of 0.39%.