Energy-spread measurement of triple-pulse electron beams based on the magnetic dispersion principle

摘要

The method of energy dispersion in magnetic field is used to analyze the energy spread of the triple-pulse electron beam generated by the Dragon-Ⅱ linear induction accelerator.A sector magnet is applied for energy analysis of the electron beam,with a bending radius of 300 mm and a deflection angle of 90°.For each pulse,the time-resolved and integral images of the electron position at the output port of beam-bending line are recorded by a streak camera and a CCD camera,respectively.Experimental results demonstrate an energy spread of less than 42.0％ for the electron pulses.The cavity voltage waveforms obtained by different detectors are also analyzed for comparison.