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TUOC02 |
Start to End Simulations of Optics-free X-ray FEL Oscillator | |
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There is obvious need for an optics-free X-ray FEL oscillator. While self-seeded SASE FELs demonstrated the capability of providing very high gain and short pulses of radiation, the spectra of SASE FELs is still rather wide and can be significantly improved in an FEL-oscillators. Idea of optics-free X-ray FEL oscillator using is know for a decade [1]. In this talk, we present start-to-end simulation of this scheme including both incoherent and coherent SR effects. We discussed the projected performance of this scheme and its potentials limitations.
[1] Optics-Free FEL oscillators, V.N.Litvinenko, ICFA Advanced Accelerator and Beam Dynamics Workshop Chia Laguna, Sardinia, July 1-6, 2002 |
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Slides TUOC02 [2.589 MB] | |
| THPD45 | Beam Dynamics and Performance of ERL-driven X-ray FEL | 634 |
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In this talk we present a self-consistent concept of ERL generated e-beam to drive an array of X-ray FELs. We use eRHIC multi-pass ERL design to explore all relevant beam dynamics. First, we study effects of incoherent and coherent synchrotron radiation on the e-beam parameters and present the set of parameters providing for the emittance preservation. Second, we present a sing bunch compressing scheme (similar to scheme described in [1]) with large compression ratio, which suppresses emittance growth caused by CSR. Finally, we present simulation result for soft- and hard-X-ray FELs driven by such electron beam. We compare projected performance of such facility with world's existing and proposed FEL facilities.
[1] Merger Designs for ERLs, V.N. Litvinenko, R.Hajima, D. Kayran, Nuclear Instruments and Methods in Physics Research A 557 (2006) 165 |
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