Choi, G. Mun, et al., Hard x-ray free-electron laser with femtosecond-scale timing jitter, Nature Photonics 11 (2017) 708.Kang HS, Min CK, Heo H, Kim C, Yang H, Kim G, Nam I, Baek SY, Choi HJ, Mun G, et al. 2017 Hard X-ray free-electron laser with femtosecond-scale ...
In the regime of extremely short wavelengths, X-ray free-electron lasers (XFELs) with exceptional peak brilliance have unveiled crucial details about the structures, dynamics and physics of various materials. Although X-ray focusing optics to enhance the intensity have progressed, achieving a single...
X-ray free electron laserundulator radiationIn this paper, several schemes of soft X-ray and hard X-ray free electron lasers (XFEL) and their progress are reviewed. Self-amplified spontaneous emission (SASE) schemes, the high gain harmonic generation (HGHG) scheme and various enhancement schemes...
Free electron lasersElectron beamsX ray productionPhotonsElectromagnetic wave backscatteringLaser pulsesCavity resonatorsSpectrum analysisElectron emissionElectromagnetic wavesResults of experiments to produce high-power microwave radiation using a selective external feedback system are presented. The generator has a...
Atomic inner-shell laser at 1.5-ngstrm wavelength pumped by an X-ray free-electron laser Since the invention of the first lasers in the visible-light region, research has aimed to produce short-wavelength lasers that generate coherent X-rays; the shorter the wavelength, the better the imaging...
The first soft x-ray free-electron laser (FEL) is providing extremely bright and coherent radiation since 2005 for a wide range of scientific applications from atomic physics to life sciences. Successful experiments using the FLASH facility at DESY, Hamburg depend critically on radiation parameters ...
In this paper, a conceptual design of a hard X-ray Free-Electron Laser (FEL) facility based on CLIC-like X-band accelerating structure has been presented. The injector, based on an X-band rf gun, the main accelerating sections, using high-gradient CLIC-like structures including rf power di...
In order to study the dynamic response of the material and the physical mechanism of fluid dynamics,an accelerator scenario which can be applied to both hard X-ray free electron laser and high energy electron radiography is proposed.This accelerator is mainly composed of a 12 GeV linac,an undul...
A tomography system was designed and built at the Large Plasma Device to measure the spatial distribution of hard x-ray (100 KeV-3 MeV) emissivity. The x-rays were generated when a hot electron ring was significantly disrupted by a shear Alfvén wave. The plasma is pulsed at 1 Hz (1 sh...
The world's second hard-X-ray free-electron laser has now been commissioned in Japan. The facility's compact accelerator and short-period undulator not only minimize space and cost but also ensure excellent output stability.doi:10.1038/nphoton.2012.184Huang, Zhirong...