CTR beamline of the Tsinghua linac.
Transition radiation spectroscopy of a single electron.
Principle of (a) RF compression and (b) RF-drift compression. Figures are mainly referenced to Refs. 15,16 .
Differences between RF compression and RF-drift compression. (a) The distribution of the shortest bunch at the TW accelerator exist in the RF compression scheme (black), and the distribution of the bunch after a long drift segment in the RF-drift compression (red). The rms lengths of the entire bunches are 161 fs and 174 fs, respectively, whereas the rms for the spike of the red bunch, lying between 1350 and 1550 fs and containing 77% of the charges is just 31.81 fs. (b): Form factors F(f) of the bunches in (a).
Stability of RF-drift compression. The THz spectrum width of 0.4 nC beam vs the TW accelerator phase at different TW accelerator gradients.
Optimized THz spectrum of different charged bunches in RF - drift compression operation.
Recent developments in broadband THz sources based on linacs.
Parameters (0.2 ∼ 1 nC beams).
THz energy of different charged bunch.
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