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Photoinjector-generation of a flat electron beam with transverse emittance ratio of 100

P. Piot·Y. -E Sun·K. -J. Kim
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Abstract

The generation of a flat electron beam directly from a photoinjector is an attractive alternative to the electron damping ring as envisioned for linear colliders. It also has potential applications to light sources such as the generation of ultra-short x-ray pulses or Smith-Purcell free electron lasers. In this Letter, we report on the experimental generation of a flat-beam with a measured transverse emittance ratio of $100\pm 20.2$ for a bunch charge of $\sim 0.5$ nC; the smaller measured normalized root-mean-square emittance is $\sim 0.4$ $μ$m and is limited by the resolution of our experimental setup. The experimental data, obtained at the Fermilab/NICADD Photoinjector Laboratory, are compared with numerical simulations and the expected scaling laws.

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P. Piot, Y. -E Sun, K. -J. Kim. 2005-11-02. Photoinjector-generation of a flat electron beam with transverse emittance ratio of 100. https://doi.org/10.1103/physrevstab.9.031001

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