Laser-Electron Storage Ring

Huang, Zhirong; Ruth, Ronald D.

doi:10.1103/physrevlett.80.976

Cited by 172 publications

(144 citation statements)

References 12 publications

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“…At the interaction point, the laser and the electron bunch are tightly focused and pass through each other on each revolution of the electron bunch and each cycle of the laser pulse. Through the process of inverse Compton scattering, pulses of X-rays are produced on each revolution (44). Let λ L and γ denote laser wavelength and electron energy given in units of rest mass, respectively.…”

Section: Methodsmentioning

confidence: 99%

Emphysema diagnosis using X-ray dark-field imaging at a laser-driven compact synchrotron light source

Schleede

Meinel²,

Bech

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

174

128

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In early stages of various pulmonary diseases, such as emphysema and fibrosis, the change in X-ray attenuation is not detectable with absorption-based radiography. To monitor the morphological changes that the alveoli network undergoes in the progression of these diseases, we propose using the dark-field signal, which is related to small-angle scattering in the sample. Combined with the absorption-based image, the dark-field signal enables better discrimination between healthy and emphysematous lung tissue in a mouse model. All measurements have been performed at 36 keV using a monochromatic laser-driven miniature synchrotron X-ray source (Compact Light Source). In this paper we present grating-based dark-field images of emphysematous vs. healthy lung tissue, where the strong dependence of the dark-field signal on mean alveolar size leads to improved diagnosis of emphysema in lung radiographs.

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Section: Methodsmentioning

confidence: 99%

Emphysema diagnosis using X-ray dark-field imaging at a laser-driven compact synchrotron light source

Schleede

Meinel²,

Bech

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

174

128

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“…Hereafter we assume a single Compton collision of a relativistic electron bunch with a high power laser pulse. The luminosity of the interaction [21] is given by: (2) where N e , N , f rep , , x,y,z,e , x,y,z,l indicate respectively the number of electrons and photons per bunch, the repetition frequency, the half of the angle of collision 1 and the three dimensional bunches r.m.s. sizes for the electron (index e) bunch and photon (index l) pulse.…”

Section: Compton Source Caracteristicsmentioning

confidence: 99%

ThomX: A high flux compact X ray source

Bruni

Artemiev

Roux

et al. 2011

UVX 2010 - 10e Colloque Sur Les Sources Cohérentes Et Incohérentes UV, VUV Et X ; Applications Et Développements Récents

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Abstract. In the field of application of X-rays, there is a strong need for high brightness, tunable beam. The synchrotron radiation sources meet this demand, but the access time is limited, and they are large and expensive facilities. In this framework, we develop a compact monochromatic high flux X-ray source. The principle lies in obtaining X-ray by Compton backscattering of photons by relativistic electrons. This facility is relatively compact (about 70 m 2 ) to be installed directly in a scientific laboratory, a hospital or an art museum. The backscattered photons are in the range of multi-keV energy, determined by the energy of the electrons and photons. Since there is a correlation between emission angle and energy of scattered photons, the spectral bandwidth of scattered photons can be controlled by simple collimation. The paper presents the ThomX X-ray source consisting of a 50 MeV small storage ring and a laser coupled to a high gain Fabry Perot cavity.

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“…Electrons are produced in a radiofrequency electron gun and are accelerated to an energy of 20-45 MeV in a linear accelerator section before they are stored in the ring at this energy. The electron bunches and the laser pulse collide at the interaction point on each revolution of the electrons and each cycle of the laser pulse (14). The emitted spectrum is similar to that of a long magnetic undulator with fundamental wavelength λ L =4γ 2 , where λ L and γ denote laser wavelength and electron energy given in units of rest mass, respectively (28).…”

Section: Clsmentioning

confidence: 88%

“…The small footprint, combined with a far lower total investment compared with a synchrotron source, facilitates the integration and therefore allows for direct availability at existing research facilities or in industry. X-rays are generated in the process of inverse Compton scattering (14) each time an electron bunch circulating in a miniature storage ring and a laser beam stored in a high-finesse bow-tie cavity collide. The produced X-ray beam is intrinsically monochromatic and coherent and offers a field of view suitable for imaging of macroscopic samples, providing suitable conditions for grating-based X-ray imaging of biomedical or material samples.…”

mentioning

confidence: 99%

X-ray phase-contrast tomography with a compact laser-driven synchrotron source

Eggl

Schleede

Bech

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

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Between X-ray tubes and large-scale synchrotron sources, a large gap in performance exists with respect to the monochromaticity and brilliance of the X-ray beam. However, due to their size and cost, large-scale synchrotrons are not available for more routine applications in small and medium-sized academic or industrial laboratories. This gap could be closed by laser-driven compact synchrotron light sources (CLS), which use an infrared (IR) laser cavity in combination with a small electron storage ring. Hard X-rays are produced through the process of inverse Compton scattering upon the intersection of the electron bunch with the focused laser beam. The produced X-ray beam is intrinsically monochromatic and highly collimated. This makes a CLS well-suited for applications of more advanced--and more challenging--X-ray imaging approaches, such as X-ray multimodal tomography. Here we present, to our knowledge, the first results of a first successful demonstration experiment in which a monochromatic X-ray beam from a CLS was used for multimodal, i.e., phase-, dark-field, and attenuation-contrast, X-ray tomography. We show results from a fluid phantom with different liquids and a biomedical application example in the form of a multimodal CT scan of a small animal (mouse, ex vivo). The results highlight particularly that quantitative multimodal CT has become feasible with laser-driven CLS, and that the results outperform more conventional approaches.phase-contrast tomography | dark-field tomography | grating interferometer | inverse Compton X-rays | X-ray imaging W ith the introduction of the grating interferometer (1-3), the field of X-ray phase-contrast imaging has seen great advances in the past decade. In comparison with conventional attenuation-contrast imaging, the phase-contrast modality greatly improves soft-tissue contrast, which can, for example, be used for better tumor visualization (4). With the development of the TalbotLau interferometer, grating-based phase-contrast imaging has become feasible not only with synchrotron sources, but also with standard X-ray tube sources (3, 5). On the downside, the visibility is degraded due to the broad polychromatic spectrum of the X-ray tube sources, thus compromising the image quality. Brilliant and highly monochromatic synchrotron sources yield superior results for high-resolution and high-sensitivity measurements (2, 4, 6-13).However, limited availability, high cost, and small fields of view make synchrotron sources incompatible with clinical applications or preclinical research on, e.g., small-animal disease models in close vicinity to biomedical laboratories with small-animal infrastructure. Offering a monochromatic beam as well as higher brilliance and coherence than X-ray tube sources, compact synchrotron sources can be classified between tube sources and synchrotron sources. These features are achieved with a compact light source (CLS), which has a size that is compatible with conventional laboratories, making it an interesting candidate for preclinical and mater...

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Laser-Electron Storage Ring

Cited by 172 publications

References 12 publications

Emphysema diagnosis using X-ray dark-field imaging at a laser-driven compact synchrotron light source

Emphysema diagnosis using X-ray dark-field imaging at a laser-driven compact synchrotron light source

ThomX: A high flux compact X ray source

X-ray phase-contrast tomography with a compact laser-driven synchrotron source

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