Pixel array detector for X-ray free electron laser experiments

Philipp, Hugh T.; Hromalik, M.; Täte, Mark W.; Koerner, Lucas J.; Grüner, Sol M.

doi:10.1016/j.nima.2010.11.189

Cited by 108 publications

(56 citation statements)

References 4 publications

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“…By varying the intensity of the drive laser it was possible to obtain shock pressures of 37±2 to 253±6 GPa, as measured via position of the Bragg peaks considering volumetric compression of the crystal lattice together with the Rankine-Hugoniot equations using the shock speed data [46]. The LCLS beam (9.6 keV, 50 fs duration) probed the compressed region after a set delay (from just before to ∼10 ns after shock break out) and the resulting diffraction patterns were captured on a number of CSPAD detectors (Cornell-SLAC Pixel Array Detector) [47]. The target was oriented such that the surface normal was aligned at an angle of 35…”

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confidence: 99%

Femtosecond X-Ray Diffraction Studies of the Reversal of the Microstructural Effects of Plastic Deformation during Shock Release of Tantalum

et al. 2018

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We have used femtosecond x-ray diffraction (XRD) to study laser-shocked fiber-textured polycrystalline tantalum targets as the 37-253 GPa shock waves break out from the free surface. We extract the time and depth-dependent strain profiles within the Ta target as the rarefaction wave travels back into the bulk of the sample. In agreement with molecular dynamics (MD) simulations the lattice rotation and the twins that are formed under shock-compression are observed to be almost fully eliminated by the rarefaction process.

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confidence: 99%

Femtosecond X-Ray Diffraction Studies of the Reversal of the Microstructural Effects of Plastic Deformation during Shock Release of Tantalum

et al. 2018

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“…Bragg intensities were calculated from the published CIF and PDB files using the programs iotbx.cif of cctbx (Gildea et al, 2011) and SFALL of CCP4 (Agarwal, 1978), respectively. The images were simulated assuming the tiled CSPAD detector geometry of the Linac Coherent Light Source (LCLS) (Hart et al, 2012;Philipp et al, 2011). The resolution of each case was chosen to reflect experimentally realistic conditions.…”

Section: Simulated Datamentioning

confidence: 99%

FELIX: an algorithm for indexing multiple crystallites in X-ray free-electron laser snapshot diffraction images

et al. 2017

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A novel algorithm for indexing multiple crystals in snapshot X-ray diffraction images, especially suited for serial crystallography data, is presented. The algorithm, FELIX, utilizes a generalized parametrization of the RodriguesFrank space, in which all crystal systems can be represented without singularities. The new algorithm is shown to be capable of indexing more than ten crystals per image in simulations of cubic, tetragonal and monoclinic crystal diffraction patterns. It is also used to index an experimental serial crystallography dataset from lysozyme microcrystals. The increased number of indexed crystals is shown to result in a better signal-to-noise ratio, and fewer images are needed to achieve the same data quality as when indexing one crystal per image. The relative orientations between the multiple crystals indexed in an image show a slight tendency of the lysozme microcrystals to adhere on (110) facets.

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“…The detector is made of 32 silicon sensors 500µm thick bumpManuscript received November 16, 2012. SLAC- PUB-15277bonded to 64 185x194-pixel ASICs tiled to cover a square approximately 17 cm by 17 cm [1], [2], [3], [4]. The CSPAD camera has experienced radiation damage whose symptoms fall into several categories.…”

Section: Introductionmentioning

confidence: 99%

High-Z radiation shields for x-ray free electron laser detectors

Tomada

Boutet

Duda

et al. 2012

2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC)

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The Linac Coherent Light Source (LCLS) produces brilliant x-ray in femtosecond pulses of high intensity. Many of the experiments performed at the LCLS use expensive pixel area detectors -the majority of which incorporate custom integrated circuit chips (ASIC). Such circuit chips are susceptible to radiation damage. To protect against this, micro-patterned tungsten foils were designed to cover the section of the circuit chip that extends beyond the sensor near the wire-bond pads. A description of the problem along with the details of how the tungsten foils were fabricated and installed will be given.

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Pixel array detector for X-ray free electron laser experiments

Cited by 108 publications

References 4 publications

Femtosecond X-Ray Diffraction Studies of the Reversal of the Microstructural Effects of Plastic Deformation during Shock Release of Tantalum

Femtosecond X-Ray Diffraction Studies of the Reversal of the Microstructural Effects of Plastic Deformation during Shock Release of Tantalum

FELIX: an algorithm for indexing multiple crystallites in X-ray free-electron laser snapshot diffraction images

High-Z radiation shields for x-ray free electron laser detectors

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