Bragg crystals are widely used in free electron lasers to diffract and isolate an extremely narrow spectral range from the initial self-amplified spontaneous emission (SASE) signal. By rotating the crystal along one of its axes, multiple reflections can be generated as per Bragg's law. A measurement model based on Bragg's law was established at the SASE2 beamline of the European XFEL after extensive hours of hard x-ray self-seeding (HXRSS) operation. This model characterizes the crystal's range of motion and reflections. In this work, two computer vision techniques, the Hough transform and template matching, are implemented to identify the absolute photon energy from photon diagnostic images. By comparing the spectrometer correlation scans ...
Energy resolving performance of spectral CT systems is influenced by the accuracy of the detector’s ...
This paper reports novel measurements of x-ray optical radiation on an absolute scale from the inten...
The average pixel distance as well as the relative orientation of an array of six charge-coupled dev...
Single-crystal monochromators are used in free electron lasers for hard x-ray self-seeding, selectin...
This paper presents an absolute X-ray photon energy measurement method that uses a Bond diffractomet...
A detailed programme of methods for calculating and measuring crystal Bragg reflection characteristi...
A novel technique for a high-precision large acceptance determination of the Bragg angle in crystal ...
In this paper, we report a method of precise and fast absolute x-ray energy calibration over a wide ...
The energy information acquired using spectral X-ray detectors allows noninvasive identification and...
It has been suggested that the extended intensity profiles surrounding Bragg reflections that arise ...
The aim of this work is to investigate the relationship between contrast and energy resolution of a ...
A new diagnostic for measuring Bragg diffraction from a laser-driven crystal using a 100ps 17.5 kV x...
In the present and the next generation of fusion devices, imaging Bragg spectrometers are key diagno...
A way has been developed to measure the unit-cell parameters of a single crystaljust from an energy ...
A novel technique for absolute wavelength determination in high-precision crystal x-ray spectroscopy...
Energy resolving performance of spectral CT systems is influenced by the accuracy of the detector’s ...
This paper reports novel measurements of x-ray optical radiation on an absolute scale from the inten...
The average pixel distance as well as the relative orientation of an array of six charge-coupled dev...
Single-crystal monochromators are used in free electron lasers for hard x-ray self-seeding, selectin...
This paper presents an absolute X-ray photon energy measurement method that uses a Bond diffractomet...
A detailed programme of methods for calculating and measuring crystal Bragg reflection characteristi...
A novel technique for a high-precision large acceptance determination of the Bragg angle in crystal ...
In this paper, we report a method of precise and fast absolute x-ray energy calibration over a wide ...
The energy information acquired using spectral X-ray detectors allows noninvasive identification and...
It has been suggested that the extended intensity profiles surrounding Bragg reflections that arise ...
The aim of this work is to investigate the relationship between contrast and energy resolution of a ...
A new diagnostic for measuring Bragg diffraction from a laser-driven crystal using a 100ps 17.5 kV x...
In the present and the next generation of fusion devices, imaging Bragg spectrometers are key diagno...
A way has been developed to measure the unit-cell parameters of a single crystaljust from an energy ...
A novel technique for absolute wavelength determination in high-precision crystal x-ray spectroscopy...
Energy resolving performance of spectral CT systems is influenced by the accuracy of the detector’s ...
This paper reports novel measurements of x-ray optical radiation on an absolute scale from the inten...
The average pixel distance as well as the relative orientation of an array of six charge-coupled dev...