Photoinjector beam quality improvement by shaping the wavefront of a drive laserwith oblique incidence

HE Zhi-Gang; WANG Xiao-Hui; JIA Qi-Ka

doi:10.1088/1674-1137/36/6/014

Chinese Physics C> 2012, Vol. 36> Issue(6) : 561-565 DOI: 10.1088/1674-1137/36/6/014

Photoinjector beam quality improvement by shaping the wavefront of a drive laserwith oblique incidence

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Abstract：
To increase the quantum efficiency (QE) of a copper photocathode and reduce the thermal emittance of an electron beam, a drive laser with oblique incidence was adopted in a BNL type photocathode rf gun. The disadvantageous effects on the beam quality caused by oblique incidence were analyzed qualitatively. A simple way to solve the problems through wavefront shaping was introduced and the beam quality was improved.

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HE Zhi-Gang, WANG Xiao-Hui and JIA Qi-Ka. Photoinjector beam quality improvement by shaping the wavefront of a drive laserwith oblique incidence[J]. Chinese Physics C, 2012, 36(6): 561-565. doi: 10.1088/1674-1137/36/6/014

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Received: 2011-08-31
Revised: 2011-09-22

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