Self modulation hghg
WebIn HGHG FELs[15], a sinusoidal energy modulation is first introduced to the electrons via the interaction between the electronbeamandanexternalseedlaserwithinamodulation … 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.
Self modulation hghg
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WebJun 5, 2024 · self-modulation scheme is systematically analyzed and optimized, and further experiments in which the self-modulator is resonant at the second harmonic of the seed laser are conducted. The three-dimensional numerical simulations show that the required seed laser intensity in the self-modulation scheme is around WebThe self-modulation scheme together with the electron-beam longitudinal phase spaces at various positions. Credit: SARI ... (HGHG) and the 30th harmonic of the seed laser in a two-stage HGHG.
Webison to the HGHG spectrum. Each SASE point is an average of 10 shots, whereas the HGHG data are single shots normalized to the total HGHG pulse energy. The FWHM HGHG bandwidth is ;20 nm, whereas the SASE bandwidth is six times as large. The HGHG single-shot spectrum was recorded by placing a thermal imaging camera at the exit plane of the ... WebMay 1, 2002 · Analytical estimate of HGHG The HGHG process can be separated into four distinct steps: the modulator, the dispersion section, the coherent harmonic generation in the first two gain lengths of the radiator, and the exponential growth section.
Webhigh-gainharmonicgeneration(HGHG)[12,13] technique, sinusoidal energy modulation in beam longitudinal phase space is first produced through a laser-electron interaction in a short undulator (modulator). After passing through a small chicane, the energy modulation is converted into density modulation that has a frequency component at the
WebA high-efficiency gas furnace with modulating gas valve and variable-speed blower provides outstanding efficient and economical heating performance. Unlike single-stage gas …
WebSep 23, 2024 · A fixed speed system allows relative humidity to go as high as 60 percent while modulating systems do not break 50 percent. Mold is harmful to the physical … univ.-prof. dr.-ing. thomas brücknerWebApr 23, 2014 · The initially proposed PEHG consists of a dogleg followed by a HGHG configuration with a TGU modulator, as shown in figure 1.Rectangular coordinates are given in scheme 1, where x and y represent the horizontal and vertical directions, respectively. The dogleg with dispersion is used to transversely disperse the electron beam, while the TGU … receiving scanner systemsWebMar 11, 2024 · The self-modulation scheme together with the electron-beam longitudinal phase spaces at various positions. Credit: SARI Seeded free-electron lasers (FELs), which … univ.-prof. dr. florian thalhammerWebThese fulfill the requirements of the aforementioned scientific applications. In HGHG FELs [15], a sinusoidal energy modulation is first introduced to the electrons via the … receiving scans from printerWebAn electron beam with a laser-induced energy modulation as small as 1.8 times the slice energy spread is used for lasing at the seventh harmonic of a 266-nm seed laser in a single-stage high-gain harmonic generation (HGHG) setup and the 30th harmonic of the seed laser in a two-stage HGHG setup. univ.-prof. dr. matthias müllerWebOct 22, 2024 · Reliability – Heating system components tend to last longer under a modulating furnace since the low-speed settings put less wear and tear on the … receiving scan from printerWebDec 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 univ.-prof. dr. herwig ostermann