Transition-Edge Sensor Microcalorimeters for X-ray Beamline Science

Ullom, Joel N.; Doriese, W. B.; Fischer, Daniel A.; Fowler, Joseph W.; Hilton, G. C.; Jaye, Cherno; Reintsema, C. D.; Swetz, Daniel S.; Schmidt, Daniel R.

doi:10.1080/08940886.2014.930806

Cited by 32 publications

(24 citation statements)

References 12 publications

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“…This would greatly facilitate measurements based on photon-in photon-out spectroscopy techniques providing exceptional energy resolution, and still attaining large solid angles by placing the detector close to the source. For this to become a reality reduction of the costs and improvements in the technology leading to better performance, in particular better efficiency for hard X-rays (above 1 keV), larger active area and higher dynamic range and readout speed for FEL applications, is necessary (Ullom et al, 2014).…”

Section: Detectorsmentioning

confidence: 99%

Photon-in photon-out hard X-ray spectroscopy at the Linac Coherent Light Source

Alonso-Mori

Sokaras

Zhu

et al. 2015

J Synchrotron Radiat

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X-ray free-electron lasers (FELs) have opened unprecedented possibilities to study the structure and dynamics of matter at an atomic level and ultra-fast timescale. Many of the techniques routinely used at storage ring facilities are being adapted for experiments conducted at FELs. In order to take full advantage of these new sources several challenges have to be overcome. They are related to the very different source characteristics and its resulting impact on sample delivery, X-ray optics, X-ray detection and data acquisition. Here it is described how photon-in photon-out hard X-ray spectroscopy techniques can be applied to study the electronic structure and its dynamics of transition metal systems with ultra-bright and ultra-short FEL X-ray pulses. In particular, some of the experimental details that are different compared with synchrotron-based setups are discussed and illustrated by recent measurements performed at the Linac Coherent Light Source.

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Section: Detectorsmentioning

confidence: 99%

Photon-in photon-out hard X-ray spectroscopy at the Linac Coherent Light Source

Alonso-Mori

Sokaras

Zhu

et al. 2015

J Synchrotron Radiat

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“…These fluorescence x-rays pass through a hole in the carbon sample target, allowing in-situ energy calibration of the TESs during the measurements. The x-rays enter through the cryostat's vacuum window (150-µm thick Be) and pass through three layers of IR-blocking filters (each 5-µm thick Al) at three temperature stages (50 K, 3 K, and 50 mK) before reaching the 240-pixel TES array 7 . Each TES consists of a superconducting bilayer of thin Mo and Cu films with an additional 4-µm thick Bi absorber (∼ 80% absorption efficiency for 6.4 keV x-rays), and has an active area of 320 µm × 305 µm set by a gold-coated Si collimator placed in front of the array, thus the total active area of the array is about 23 mm 2 .…”

Section: Introductionmentioning

confidence: 99%

Absolute Energy Calibration of X-ray TESs with 0.04 eV Uncertainty at 6.4 keV in a Hadron-Beam Environment

et al. 2016

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A performance evaluation of superconducting transition-edge sensors (TESs) in the environment of a pion beam line at a particle accelerator is presented. Averaged across the 209 functioning sensors in the array, the achieved energy resolution is 5.2 eV FWHM at Co K α (6.9 keV) when the pion beam is off and 7.3 eV at a beam rate of 1.45 MHz. Absolute energy uncertainty of ±0.04 eV is demonstrated for Fe K α (6.4 keV) with in-situ energy calibration obtained from other nearby known x-ray lines. To achieve this small uncertainty, it is essential to consider the non-Gaussian energy response of the TESs and thermal cross-talk pile-up effects due to charged-particle hits in the silicon substrate of the TES array.

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“…It would also be possible to illuminate the sample with a broadband X-ray source and use, for example, a monochromator or analyser crystals in the diffracted beam in a wavelength-dispersive setup. A particularly interesting option, and one that would enable a laboratory implementation rather than relying on synchrotron facilities, would be to employ superconducting transition-edge sensor (TES) arrays (Ullom et al, 2014;Ullom & Bennett, 2015) for X-ray detection and to provide good energy resolution. These sensors admit an especially simple conceptual design for the experiment as a whole, and the simultaneous acquisition of the whole EDXRD spectrum would avoid the need for time-consuming energy scanning, although the operation of the sensors is significantly nontrivial (Fowler, 2016).…”

Section: Discussionmentioning

confidence: 99%

High-resolution X-ray diffraction with no sample preparation

Hansford

Turner

Degryse

et al. 2017

Acta Crystallogr A Found Adv

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It is shown that energy-dispersive X-ray diffraction (EDXRD) implemented in a back-reflection geometry is extremely insensitive to sample morphology and positioning even in a high-resolution configuration. This technique allows highquality X-ray diffraction analysis of samples that have not been prepared and is therefore completely non-destructive. The experimental technique was implemented on beamline B18 at the Diamond Light Source synchrotron in Oxfordshire, UK. The majority of the experiments in this study were performed with pre-characterized geological materials in order to elucidate the characteristics of this novel technique and to develop the analysis methods. Results are presented that demonstrate phase identification, the derivation of precise unitcell parameters and extraction of microstructural information on unprepared rock samples and other sample types. A particular highlight was the identification of a specific polytype of a muscovite in an unprepared mica schist sample, avoiding the time-consuming and difficult preparation steps normally required to make this type of identification. The technique was also demonstrated in application to a small number of fossil and archaeological samples. Back-reflection EDXRD implemented in a high-resolution configuration shows great potential in the crystallographic analysis of cultural heritage artefacts for the purposes of scientific research such as provenancing, as well as contributing to the formulation of conservation strategies. Possibilities for moving the technique from the synchrotron into museums are discussed. The avoidance of the need to extract samples from high-value and rare objects is a highly significant advantage, applicable also in other potential research areas such as palaeontology, and the study of meteorites and planetary materials brought to Earth by sample-return missions.

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Transition-Edge Sensor Microcalorimeters for X-ray Beamline Science

Cited by 32 publications

References 12 publications

Photon-in photon-out hard X-ray spectroscopy at the Linac Coherent Light Source

Photon-in photon-out hard X-ray spectroscopy at the Linac Coherent Light Source

Absolute Energy Calibration of X-ray TESs with 0.04 eV Uncertainty at 6.4 keV in a Hadron-Beam Environment

High-resolution X-ray diffraction with no sample preparation

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