Operation of the OK-4/Duke storage ring FEL below 200nm

Litvinenko, V.N.; Park, Seong Hee; Pinayev, I.; Wu, Y.

doi:10.1016/s0168-9002(01)01559-5

Cited by 43 publications

(10 citation statements)

References 31 publications

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“…Afterwards, other FEL oscillator facilities implemented the OK scheme, such as ACO SR FEL (LURE, France), which lased at 635 nm in 1983 [4] and at 463 nm in 1987 [5]. The progress in optical cavity mirror coatings allowed later for lasing in ultra-violet, at 240 nm in 1989 (OK-4/VEPP-3 storage ring FEL [6]) and below, down to 193 nm in 1999 (OK-4 Duke SR FEL [7]). In 2000, the ELETTRA storage ring FEL lased at 217.9 nm [8,9] and a few years later at 190 nm, which is the shortest wavelength obtained with an OK FEL oscillator [10].…”

Section: Introductionmentioning

confidence: 99%

Optical Klystron Enhancement to Self Ampliﬁed Spontaneous Emission at FERMI

et al. 2017

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Abstract:The optical klystron enhancement to a self-amplified spontaneous emission free electron laser has been studied in theory and in simulations and has been experimentally demonstrated on a single-pass high-gain free electron laser, the FERMI FEL-1, in 2014. The main concept consists of two undulators separated by a dispersive section that converts the energy modulation induced in the first undulator in density modulation, enhancing the coherent harmonic generation in the first part of the second undulator. This scheme could be replicated in a multi-stage: the bunching is enhanced after each dispersive section, consistently reducing the saturation length. We have applied the multi-stage optical klystron (OK) scheme on the FEL-2 line at FERMI, whose layout includes three dispersive sections. Optimizing the strength of the dispersions allowed a significant increase of the self-amplified spontaneous emission (SASE) intensity in comparison to a single-stage OK and extending to the soft-X rays the OK enhanced SASE previously demonstrated on FEL-1.

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Section: Introductionmentioning

confidence: 99%

Optical Klystron Enhancement to Self Ampliﬁed Spontaneous Emission at FERMI

et al. 2017

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“…The shortest wavelength achieved by storage ring FELs is about 200 nm [1,2], limited by mirror reflectivity. Discussions of mirrorless, highgain FELs in a storage ring typically involve a special bypass to provide the FEL interaction about once every damping time and hence decouple the FEL from the storage ring dynamics (see, e.g., Refs.…”

Section: Introductionmentioning

confidence: 99%

Steady-state analysis of short-wavelength, high-gain FELs in a large storage ring

Huang

Bane

Cai

et al. 2008

Nuclear Instruments and Methods in Physics Research Section A:

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Storage ring FELs have operated successfully in the low-gain regime using optical cavities. Discussions of a high-gain FEL in a storage ring typically involve a special bypass to decouple the FEL interaction from the storage ring dynamics. In this paper, we investigate the coupled dynamics of a high-gain FEL in a large storage ring such as PEP and analyze the equilibrium solution. We show that an FEL in the EUV and soft x-ray regimes can be integrated into a very bright storage ring and potentially provides three orders of magnitude improvement in the average brightness at these radiation wavelengths. We also discuss possibilities of seeding with HHG sources to obtain ultra-short, high-peak power EUV and soft x-ray pulses. Physics and Related Topics (Elba Island, Italy, September 8 -14, 2007) Presented at International Workshop on Frontiers in FEL AbstractStorage ring FELs have operated successfully in the low-gain regime using optical cavities. Discussions of a highgain FEL in a storage ring typically involve a special bypass to decouple the FEL interaction from the storage ring dynamics. In this paper, we investigate the coupled dynamics of a high-gain FEL in a large storage ring such as PEP and analyze the equilibrium solution. We show that an FEL in the EUV and soft x-ray regimes can be integrated into a very bright storage ring and potentially provides three orders of magnitude improvement in the average brightness at these radiation wavelengths. We also discuss possibilities of seeding with HHG sources to obtain ultra-short, highpeak power EUV and soft x-ray pulses.

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“…storage ring [9], room temperature linac [10], or superconducting linac [11]. Storage rings provide very high stability and continuous operation; however, the FEL action perturbs the electron beam, thus limiting performance.…”

Section: Introductionmentioning

confidence: 99%