The energy of the gamma rays depends mostly on the energy of the electron beam: a 250-giga-electron-volt (GeV) electron beam knocks the photons from around 1 eV (visible light) to about 200 GeV.

• 伽玛射线的能量几乎全由电子束能量决定：一个2500亿电子伏特的电子，可以把光子从1电子伏特（可见光能量）撞成近2000亿电子伏特。