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

LI Wei-Wei; HE Zhi-Gang; JIA Qi-Ka

doi:10.1088/1674-1137/38/4/047003

Chinese Physics C> 2014, Vol. 38> Issue(4) : 047003 DOI: 10.1088/1674-1137/38/4/047003

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

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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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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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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: HE Zhi-Gang,

Received Date: 2013-05-29
Accepted Date: 1900-01-01
Available Online: 2014-04-05

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).