| 摘要 |
PURPOSE: A small-sized photon generator is provided to easily generate high- luminance and high-energy photons. CONSTITUTION: In a preferred embodiment, the scatter laser(16) is configured to emit the laser beam(18) in a train of pulses at a predetermined and preferably constant repetition rate. The electron gun(12) also is configured to emit the electron beam(14) in a train of electron pulses. Correspondingly, the interaction ring(20) is sized and configured for circulating an individual electron beam pulse with a predetermined period or periodicity which is substantially equal to the period corresponding to the repetition rate of the laser beam pulses for effecting repetitive collisions inside the ring. In each collision of the electron beam pulse with the train of laser beam pulses a corresponding number of photons are produced by Thomson scattering. The resulting photon beam(22) therefore enjoys a substantially high average brightness.
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