Physics – Accelerator Physics
Scientific paper
2002-11-12
Phys.Rev.ST Accel.Beams 6 (2003) 030702
Physics
Accelerator Physics
31 pages, 13 figures, submitted to Phys. Rev. Special Topics A&B
Scientific paper
10.1103/PhysRevSTAB.6.030702
Energy recovering an electron beam after it has participated in a free-electron laser (FEL) interaction can be quite challenging because of the substantial FEL-induced energy spread and the energy anti-damping that occurs during deceleration. In the Jefferson Lab infrared FEL driver-accelerator, such an energy recovery scheme was implemented by properly matching the longitudinal phase space throughout the recirculation transport by employing the so-called energy compression scheme. In the present paper,after presenting a single-particle dynamics approach of the method used to energy-recover the electron beam, we report on experimental validation of the method obtained by measurements of the so-called "compression efficiency" and "momentum compaction" lattice transfer maps at different locations in the recirculation transport line. We also compare these measurements with numerical tracking simulations.
Douglas D. R.
Krafft G. A.
Piot Philippe
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