Compact narrow-band THz radiation source based on photocathode rf gun

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LI Wei-Wei, HE Zhi-Gang and JIA Qi-Ka. Compact narrow-band THz radiation source based on photocathode rf gun[J]. Chinese Physics C, 2014, 38(4): 047003. doi: 10.1088/1674-1137/38/4/047003
LI Wei-Wei, HE Zhi-Gang and JIA Qi-Ka. Compact narrow-band THz radiation source based on photocathode rf gun[J]. Chinese Physics C, 2014, 38(4): 047003.  doi: 10.1088/1674-1137/38/4/047003 shu
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Received: 2013-05-29
Revised: 1900-01-01
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Compact narrow-band THz radiation source based on photocathode rf gun

    Corresponding author: HE Zhi-Gang,

Abstract: Narrow-band THz coherent Cherenkov radiation can be driven by a subpicosecond electron bunch traveling along the axis of a hollow cylindrical dielectric-lined waveguide. We present a scheme of compact THz radiation source based on the photocathode rf gun. On the basis of our analytic result, the subpicosecond electron bunch with high charge (800 pC) can be generated directly in the photocathode rf gun. According to the analytical and simulated results, a narrow emission spectrum peaked at 0.24 THz with 2 megawatt (MW) peak power is expected to gain in the proposed scheme (the length of the facility is about 1.2 m).

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