WebDec 11, 2013 · The recent success of self-amplified spontaneous emission (SASE)-based x-ray free-electron laser (FEL) facilities [1, 2] is enabling cutting-edge science in various areas. ... usually needed to strengthen the energy modulation in HGHG, which will result in a degradation of the amplification process in the radiator. Thus the requirement of FEL WebA similar layout can be found in the scheme of self-modulation HGHG [ 31], where the first stage of the HGHG radiator is resonant at the fundamental or the second harmonic wavelength. Our work can be distinguished by the high-order harmonic modulator and the significant bunching factor up to the 20th harmonic of the seed laser wavelength.
Theory of high gain harmonic generation: an analytical estimate
WebThe proposed self-seeding system as described in Ref. [38]. Another approach to produce temporal coherent light, proposed in [39, 40], also falls under the category of a self-seeding FEL although it actually uses two electron bunches. A schematic of this approach is shown in Fig .2. Fig. 2. (color online) Schematic of the two-bunch self-seeding WebQuiet start scheme is broadly utilized in Self Amplified Spontaneous Radiation (SASE) FEL simulations, which is proven to be correct and efficient. Nevertheless, d ue to the energy modulation and the dispersion section, the High Gain Harmonic Generation (HGHG) FEL simulation will not be improved by the traditional quiet start method. A meijer 2155 paul jones way lexington
(PDF) Harmonic-enhanced high-gain harmonic generation for a hig…
WebFor the self seeded scheme both the undulators have a 2.8 cm period, while in the HGHG case the period is 4.2cm for the modulator and 2.8cm for the radiator. The self seeded scheme operates at 6 nm while for the HGHG we assume a 30 nm seed with 5th harmonic conversion. Results in the ideal case: self seeding Webin storage rings. Self modulation or optical-klystron HGHG is based on pre-density modulation method. These schemes still need a laser-induced energy modulation at least … Webthe HGHG scheme is made of 3 sections of 55 periods each and the first undulator for the self seeded scheme is made of 7 sections of 75 periods. With this setup we obtain an 8% … nantwich swimming pool opening times