Synchrotron calibration and response modelling of back-illuminated XMM-RGS CCDs

Bootsma, T.M.V.; Zwet, E.J. van; Brinkman, A. C.; Herder, J. W. den; Jong, L. de; Korte, P. de; Olsthoorn, S. M.

doi:10.1016/s0168-9002(99)00870-0

Cited by 13 publications

(7 citation statements)

References 6 publications

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“…Edges due to Si, Al, Mg, and F are clearly visible. Additional measurements were performed at the Bessy synchrotron facility, in order to map the X-ray Absorption Fine Structure (variations up to a few %, see Bootsma et al 2000).…”

Section: Ccd Responsementioning

confidence: 99%

The Reflection Grating Spectrometer on board XMM-Newton

Herder

Brinkman

Kahn

et al. 2001

A&A

857

226

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Abstract. The ESA X-ray Multi Mirror mission, XMM-Newton, carries two identical Reflection Grating Spectrometers (RGS) behind two of its three nested sets of Wolter I type mirrors. The instrument allows highresolution (E/∆E = 100 to 500) measurements in the soft X-ray range (6 to 38Å or 2.1 to 0.3 keV) with a maximum effective area of about 140 cm 2 at 15Å. Its design is optimized for the detection of the K-shell transitions of carbon, nitrogen, oxygen, neon, magnesium, and silicon, as well as the L shell transitions of iron. The present paper gives a full description of the design of the RGS and its operational modes. We also review details of the calibrations and in-orbit performance including the line spread function, the wavelength calibration, the effective area, and the instrumental background.

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Section: Ccd Responsementioning

confidence: 99%

The Reflection Grating Spectrometer on board XMM-Newton

Herder

Brinkman

Kahn

et al. 2001

A&A

857

226

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“…Charge that is generated close to the surface of a backilluminated CCD by the interaction of a low energy X-ray can be lost to the generation/recombination centres present [20], especially if the device is not deep-depleted and the generated electrons can drift in a field-free region [21]. The resulting partial event would affect the value found for the Modified Fano Factor.…”

Section: B Generation/recombination Centre Charge Lossmentioning

confidence: 99%

The Noise Performance of Electron-Multiplying Charge-Coupled Devices at Soft X-Ray Energy Values

Tutt

Holland

Murray

et al. 2012

IEEE Trans. Electron Devices

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Abstract-The use of EM-CCDs for high resolution soft Xray spectroscopy has been proposed in previous studies and the analysis that followed identified and verified experimentally a Modified Fano Factor for X-ray detection using an 55 Fe X-ray source. However, further experiments with soft X-rays at 1000 eV were less successful, attributed to excessive split events. More recently, through the use of a deep depletion e2v CCD220 and on-chip binning, it was possible to greatly reduce the number of split events allowing the result for the Modified Fano Factor at soft X-ray energies to be verified. This paper looks at the earlier attempt to verify the Modified Fano Factor at 1000 eV with a e2v CCD97 and shows the issues created by the splitting of the charge cloud between pixels. It then compares these earlier results with new data collected using the e2v CCD220, investigating how split event reduction allows the Modified Fano Factor to be verified for low energy X-rays.

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“…A few charge diffusion models available in the literature can be found. A well accepted model used by a variety of authors in the literature (Bootsma et al 2000, McCarthy et al 1995 determines that the charge diffusion can be approximated to a Gaussian, with standard deviation σ f f (1), if projected on the charge collection layer (Janesick et al 1985).…”

Section: Charge Diffusion Modelmentioning

confidence: 99%

The spatial resolution of silicon-based electron detectors in β-autoradiography

Cabello¹,

Wells²

2010

Phys. Med. Biol.

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Abstract. Thin tissue autoradiography is an imaging modality where ex-vivo tissue sections are placed in direct contact with autoradiographic film. These tissue sections contain a radiolabelled ligand bound to a specific biomolecule under study. This radioligand emits β-or β+ particles ionising silver halide crystals in the film. High spatial resolution autoradiograms are obtained using low energy radioisotopes, such as 3 H where an intrinsic 0.1-1 µm spatial resolution can be achieved. Several digital alternatives have been presented over the past years to replace conventional film but their spatial resolution has yet to equal film, although silicon-based imaging technologies have demonstrated higher sensitivity compared to conventional film. It will be shown in this work how pixel size is a critical parameter for achieving high spatial resolution for low energy uncollimated beta imaging. In this work we also examine the confounding factors impeding silicon-based technologies with respect to spatial resolution. The study considers charge diffusion in silicon and detector noise, and this is applied to a range of radioisotopes typically used in autoradiography. Finally an optimal detector geometry to obtain the best possible spatial resolution for a specific technology and a specific radioisotope is suggested.

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Synchrotron calibration and response modelling of back-illuminated XMM-RGS CCDs

Cited by 13 publications

References 6 publications

The Reflection Grating Spectrometer on board XMM-Newton

The Reflection Grating Spectrometer on board XMM-Newton

The Noise Performance of Electron-Multiplying Charge-Coupled Devices at Soft X-Ray Energy Values

The spatial resolution of silicon-based electron detectors in β-autoradiography

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