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

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

doi:10.1088/1674-1137/37/12/127002

Chinese Physics C> 2013, Vol. 37> Issue(12) : 127002 DOI: 10.1088/1674-1137/37/12/127002

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

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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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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

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Received: 2013-02-27
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

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

Corresponding author: HE Zhi-Gang,

Received Date: 2013-02-27
Accepted Date: 1900-01-01
Available Online: 2013-12-05

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.