Photoinjector beam quality improvement by shaping the wavefront of a drive laserwith oblique incidence |
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| Authors: | HE Zhi-Gang WANG Xiao-Hui JIA Qi-Ka |
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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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