Report on recent results of the PERCIVAL soft X-ray imager

Khromova, A.; Cautero, G.; Giuressi, D.; Menk, R.H.; Pinaroli, G.; Stebel, L.; Correa, Jonathan; Marras, A.; Wunderer, C.; Lange, S.; Tennert, M.; Niemann, M.; Hirsemann, H.; Reza, Salim; Graafsma, H.; Göttlicher, P.; Shevyakov, I.; Supra, J.; Xia, Q.; Zimmer, M.; Guerrini, N.; Marsh, B.; Sedgwick, I.; Nicholls, T.; Turchetta, R.; Pedersen, U.; Tartoni, N.; Hyun, H.J.; Kim, K. S.; Rah, Seungyu; Hoenk, Michael E.; Jewell, April D.; Jones, Todd J.; Nikzad, Shouleh

doi:10.1088/1748-0221/11/11/c11020

Cited by 11 publications

(7 citation statements)

References 8 publications

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“…By using fast detectors dedicated for measurements at soft X-rays with intrinsic large dynamic range (> 10 5 ) and rapid image acquisition [54,55] we expect further improvement in resolution for coherent imaging techniques in the water window energy range. High-resolution together with high-contrast meets a demand in biological nano-imaging.…”

Section: Resultsmentioning

confidence: 99%

Quantitative ptychographic bio-imaging in the water window

Rose¹,

Senkbeil²,

Gundlach³

et al. 2018

Opt. Express

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Coherent X-ray ptychography is a tool for highly dose efficient lensless nano-imaging of biological samples. We have used partially coherent soft X-ray synchrotron radiation to obtain a quantitative image of a laterally extended, dried, and unstained fibroblast cell by ptychography. We used data with and without a beam stop that allowed us to measure coherent diffraction with a high-dynamic range of 1.7·10. As a quantitative result, we obtained the refractive index values for two regions of the cell with respect to a reference area. Due to the photon energy in the water window we obtained an extremely high contrast of 53% at 71 nm half-period resolution. The dose applied in our experiment was 9.5·10 Gy and is well below the radiation damage threshold. The concept for dynamic range improvement for low dynamic range detectors with a beam stop opens the path for high resolution nano-imaging of a variety of samples including cryo-preserved, hydrated and unstained biological cells.

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Section: Resultsmentioning

confidence: 99%

Quantitative ptychographic bio-imaging in the water window

Rose¹,

Senkbeil²,

Gundlach³

et al. 2018

Opt. Express

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“…2 shows an example of the SNR for an X-ray beam of 500 eV and its comparison with published results for other sensors, i.e. a back-illuminated CCD (PIMTE2048B camera from https://www.princetoninstruments.com) and the PERCIVAL detector (Khromova et al, 2016). In the SNR estimations only the shot noise, temporal noise (thermal noise and readout noise) and the theoretical QE (see also Section 3.2) of each sensor are taken into account while the spatial noise is excluded (PRNU = 0% and DSNU = 0 e À ).…”

Section: Soft X-ray Camera Description 21 Scmos Gsense400bsi Characmentioning

confidence: 98%

Backside-illuminated scientific CMOS detector for soft X-ray resonant scattering and ptychography

Desjardins¹,

Medjoubi²,

Sacchi³

et al. 2020

J Synchrotron Rad

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The impressive progress in the performance of synchrotron radiation sources is nowadays driven by the so-called `ultimate storage ring' projects which promise an unprecedented improvement in brightness. Progress on the detector side has not always been at the same pace, especially as far as soft X-ray 2D detectors are concerned. While the most commonly used detectors are still based on microchannel plates or CCD technology, recent developments of CMOS (complementary metal oxide semiconductor)-type detectors will play an ever more important role as 2D detectors in the soft X-ray range. This paper describes the capabilities and performance of a camera equipped with a newly commercialized backside-illuminated scientific CMOS (sCMOS-BSI) sensor, integrated in a vacuum environment, for soft X-ray experiments at synchrotron sources. The 4 Mpixel sensor reaches a frame rate of up to 48 frames s−1 while matching the requirements for X-ray experiments in terms of high-intensity linearity (>98%), good spatial homogeneity (<1%), high charge capacity (up to 80 ke−), and low readout noise (down to 2 e− r.m.s.) and dark current (3 e− per second per pixel). Performance evaluations in the soft X-ray range have been carried out at the METROLOGIE beamline of the SOLEIL synchrotron. The quantum efficiency, spatial resolution (24 line-pairs mm−1), energy resolution (<100 eV) and radiation damage versus the X-ray dose (<600 Gy) have been measured in the energy range from 40 to 2000 eV. In order to illustrate the capabilities of this new sCMOS-BSI sensor, several experiments have been performed at the SEXTANTS and HERMES soft X-ray beamlines of the SOLEIL synchrotron: acquisition of a coherent diffraction pattern from a pinhole at 186 eV, a scattering experiment from a nanostructured Co/Cu multilayer at 767 eV and ptychographic imaging in transmission at 706 eV.

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“…The stability of 2D-doped detectors in high radiation environments has inspired collaborations between JPL and high energy physicists on the development of a soft X-ray imager using 2D-doped CMOS detectors [53][54][55]. The PERCIVAL collaboration needed detectors with high stability and QE to detect soft X-rays for high-energy physics experiments, and performed extensive characterization of our detectors using synchrotron radiation at DESY.…”

Section: Experimental Evidence For the Stability And Radiation Hardne...mentioning

confidence: 99%

2D-doped silicon detectors for UV/optical/NIR and x-ray astronomy

Hoenk

Jewell

Kyne

et al. 2022

X-Ray, Optical, and Infrared Detectors for Astronomy X

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In this paper we review the physics and performance of back-illuminated CCDs. Models of back-illuminated CCDs are used to derive requirements for stable, strong surface passivation in space-relevant environments. Models and data are used to compare state-of-the-art surface passivation methods with 2D-doped surfaces. MBE growth of 2D-doped silicon on back-illuminated CCDs and CMOS image sensors enables near 100% charge collection efficiency with exceptional stability in space and other harsh environments. Lifetime tests performed on 2D-doped CMOS image sensors using pulsed DUV lasers have demonstrated the unique stability of 2D-doped detectors against high levels of radiation-induced surface damage. The insensitivity of 2D-doped detectors to Si-SiO2 traps has facilitated the development of a variety of coatings and filters with science-enabling capabilities for NASA instruments and missions in the far and near ultraviolet spectral range. We discuss the status and goals of a strategic partnership between JPL and Teledyne e2v for the certification of 2Ddoping processes, and report initial results from our collaboration.

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Report on recent results of the PERCIVAL soft X-ray imager

Cited by 11 publications

References 8 publications

Quantitative ptychographic bio-imaging in the water window

Quantitative ptychographic bio-imaging in the water window

Backside-illuminated scientific CMOS detector for soft X-ray resonant scattering and ptychography

2D-doped silicon detectors for UV/optical/NIR and x-ray astronomy

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