Percival: A soft x-ray imager for synchrotron rings and free electron lasers

Marras, A.; Wunderer, C.; Correa, Jonathan; Boitrelle, B.; Goettlicher, P.; Kuhn, Manuela; Kriváň, F.; Lange, S.; Okrent, Frank; Shevyakov, I.; Supra, J.; Tennert, M.; Zimmer, M.; Guerrini, N.; Marsh, B.; Sedgwick, I.; Cautero, G.; Giuressi, D.; Khromova, Antastasya; Menk, R.H.; Pinaroli, G.; Stebel, L.; Greer, A.L.; Nicholls, T.; Pedersen, U.; Tartoni, N.; Hyun, H. J.; Kim, Kyung Sook; Rah, Seung Yu; Graafsma, H.

doi:10.1063/1.5084691

Cited by 8 publications

(5 citation statements)

References 5 publications

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“…The sample was placed 0.9 cm downstream of the grating, which led to an average mutual overlap of 80% between neighboring beamlets in the sample plane. The diffraction patterns were measured using two detectors: an ANDOR iKON-M SO CCD camera (1024 × 1024 pixels, 13 × 13µm 2 each) and the novel PERCIVAL detector (1440 × 1484 pixels, 27 × 27µm 2 each) 25 . The PERCIVAL detector offers an exceptionally high dynamical range (5 × 10 4 photons at E ph = 100eV ) and large chip size (3.8 × 4cm 2 ).…”

Section: Methodsmentioning

confidence: 99%

Single-shot ptychography at a soft X-ray free-electron laser

Kharitonov

Mehrjoo

Ruiz-Lopez

et al. 2022

Preprint

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Ptychograhy is a scanning coherent diffraction imaging technique capable of providing images of extended samples with diffraction-limited resolution. However, ptychography experiments are time-consuming due to their scanning nature which also prevents their use for imaging of dynamical processes. Recently, setups based on two con-focal lenses were proposed to perform single-shot ptychography in the visible regime by measuring the diffraction pattern produced by multiple overlapping beams in one shot. However, this approach cannot be extended straightforwardly to X-ray wavelengths due to the application of refractive optics. In this work, we demonstrate a novel and nascent single-shot ptychography setup utilizing the combination of X-ray focusing optics with a two-dimensional beam-splitting diffraction grating. It allows single-shot imaging of extended samples at X-ray wavelengths. As a proof of concept, we performed single-shot ptychography in the XUV range at the free-electron laser FLASH and obtained a high-resolution reconstruction of the sample.

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Section: Methodsmentioning

confidence: 99%

Single-shot ptychography at a soft X-ray free-electron laser

Kharitonov

Mehrjoo

Ruiz-Lopez

et al. 2022

Preprint

Self Cite

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“…The indexing efficiency varies based on the accuracy of the detector geometry information. For example, segmented detectors consist of several small detector modules tiled together, such as Cornell-SLAC Pixel Array Detectors (CSPAD) (Moeller et al, 2012), multi-port chargecoupled devices (MPCCD) (Kameshima et al, 2014), adaptive gain integrating pixel detectors (AGIPD) (Allahgholi et al, 2019), Percival (Marras et al, 2019), and adJUstiNg Gain detector FoR the Aramis User station (JUNGFRAU) (Leonarski et al, 2020) detectors. Geometry optimization may be necessary for each panel during data processing because the pixels in each module may not be perfectly aligned on a regular grid.…”

Section: Indexing Ratementioning

confidence: 99%

Hit and Indexing Rate in Serial Crystallography: Incomparable Statistics

Nam

2022

Front. Mol. Biosci.

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“…The PERCIVAL "P2M" system is the 2-million-pixel imager version, featuring a large uninterrupted imaging area of 4×4 cm 2 . An in-pixel circuitry is used to extend the dynamic range by modulating the pixel gain according to the impinging photon flux [3]. A system of three switches and capacitors is embedded in each pixel, able to change the charge-to-voltage transfer function of a pixel exposed to a high photon flux, thus avoiding its saturation and effectively increasing its dynamic range.…”

Section: The Percival Systemmentioning

confidence: 99%

“…In figure 1, the scheme of the PERCIVAL system is reported. • Exposure modes, FEL: all photons in < 300 fs, synchrotron: quasi-continuous Some P2M sensors in the Front Side Illuminated (FSI) configuration are being under tests and preliminary results have already been reported in [3,4]. Moreover, the characterization of several smaller sized test prototypes, which had been built to evaluate the performance of the chosen architecture, has been reported in [5,6].…”

Section: The Percival Systemmentioning

confidence: 99%