Abstract: In order to accurately,quickly and conveniently measure the energy of low-energy electron accelerators for radiation processing,the range method is used to measure the electron beam energy in this work.A wedge measurement device and a stack measurement device were designed and manufactured made of polystyrene material.Combined with the radiochromic film dosimetry system,these two different types of devices were used to simultaneously measure the energy of the accelerator electron beam with a nominal energy of 0.65MeV.The results show that the designed wedge measurement device can measure the energy of the electron beam as low as 0.65MeV.Compared with the stacked energy measurement method,the wedge measurement method is more convenient,more efficient,and the uncertainty introduced is smaller.In practice,when measuring the energy of low-energy electron beam above 0.65MeV with the range method,a wedge measurement device is recommended to measure the electron beam energy.

Key words: Radiation processing, Electron beam energy, Electron range, Film dosimetry system, Depth-dose distribution curve