Phys. Rev. ST Accel. Beams 9, 031001 (2006) [7 pages]Photoinjector generation of a flat electron beam with transverse emittance ratio of 100
P. Piot1,2 *, Y.-E Sun3 †, and K.-J. Kim3,4 Received 2 November 2005; published 7 March 2006 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 ultrashort x-ray pulses or Smith-Purcell free electron lasers. In this paper, we report on the experimental generation of a flat beam with a measured transverse emittance ratio of 100±20 for a bunch charge of ∼0.5 nC; the smaller measured normalized root-mean-square emittance is ∼0.4 μm 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. ©2006 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevSTAB.9.031001
* Electronic address: piot@nicadd.niu.edu
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