Generation and measurement of sub-picosecond electron bunch in photocathode rf gun

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LI Wei-Wei, HE Zhi-Gang and JIA Qi-Ka. Generation and measurement of sub-picosecond electron bunch in photocathode rf gun[J]. Chinese Physics C, 2013, 37(12): 127002. doi: 10.1088/1674-1137/37/12/127002
LI Wei-Wei, HE Zhi-Gang and JIA Qi-Ka. Generation and measurement of sub-picosecond electron bunch in photocathode rf gun[J]. Chinese Physics C, 2013, 37(12): 127002.  doi: 10.1088/1674-1137/37/12/127002 shu
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Received: 2013-02-27
Revised: 1900-01-01
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Generation and measurement of sub-picosecond electron bunch in photocathode rf gun

    Corresponding author: HE Zhi-Gang,

Abstract: We consider a scheme to generate a sub-picosecond electron bunch in the photocathode rf gun by improving the acceleration gradient in the gun, suitably tuning the bunch charge, the laser spot size and the acceleration phase, and reducing the growth of transverse emittance by laser shaping. A nondestructive technique is also reported to measure the electron bunch length, by measuring the high-frequency spectrum of wakefield radiation which is caused by the passage of a relativistic electron bunch through a channel surrounded by a dielectric.

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