Small pixel hybrid CMOS x-ray detectors (Erratum)

Hull, Samuel V.; Falcone, A.; Burrows, D. N.; Wages, Mitchell; McQuaide, Maria

doi:10.1117/12.2312121

Cited by 10 publications

(7 citation statements)

References 5 publications

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“…Newer test devices have been fabricated and tested with lower noise (∼5.5 e − RMS), small pixels (12.5 μm pitch), and on-chip correlated double sampling. 9 Pixel-to-pixel calibration has also been successfully demonstrated and the test devices have shown energy resolution of 78 eV (FWHM) at 0.5 keV and ∼150 eV (FWHM) at 5.9 keV. 10 The devices have also been operated at substrate bias voltages ranging all the way up to 150 V, which enables the optimization of charge splitting between pixels in order to prioritize less charge splitting for better energy resolution or some slight degree of increased charge splitting in order to obtain improved spatial resolution of the x-ray photon landing location.…”

Section: X-ray Hybrid Cmos Detectorsmentioning

confidence: 99%

Overview of the high-definition x-ray imager instrument on the Lynx x-ray surveyor

Falcone¹,

Kraft

Bautz

et al. 2019

J. Astron. Telesc. Instrum. Syst.

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Four NASA Science and Technology Definition Teams have been convened in order to develop and study four mission concepts to be evaluated by the upcoming 2020 Decadal Survey. The Lynx x-ray surveyor mission is one of these four large missions. Lynx will couple fine angular resolution (<0.5 arcsec HPD) x-ray optics with large effective area (∼2 m 2 at 1 keV), thus enabling exploration within a unique scientific parameter space. One of the primary soft x-ray imaging instruments being baselined for this mission concept is the highdefinition x-ray imager, HDXI. This instrument would use a finely pixelated silicon sensor array to achieve fine angular resolution imaging over a wide field of view (∼22 × 22 arcmin). Silicon sensors enable large-format/ small-pixel devices, radiation tolerant designs, and high quantum efficiency across the entire soft x-ray bandpass. To fully exploit the large collecting area of Lynx (∼30× Chandra), with negligible or minimal x-ray event pile-up, the HDXI will be capable of much faster frame rates than current x-ray imagers. We summarize the planned requirements, capabilities, and development status of the HDXI instrument, and associated papers in this special edition will provide further details on some specific detector options. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: X-ray Hybrid Cmos Detectorsmentioning

confidence: 99%

Overview of the high-definition x-ray imager instrument on the Lynx x-ray surveyor

Falcone¹,

Kraft

Bautz

et al. 2019

J. Astron. Telesc. Instrum. Syst.

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“…The small-pixel HCDs are a prototype x-ray HCD designed specifically to meet the needs of future high-throughput x-ray missions with fine angular resolution. 24 The main goal of the smallpixel HCD design was to scale down x-ray HCD technology to smaller pixel sizes while improving read noise and spectral resolution. Our small-pixel HCD test devices are 128 × 128 pixel prototypes with 12.5-μm pixel pitch, and a depletion depth of 100-μm.…”

Section: Small-pixel Hcdsmentioning

confidence: 99%

Hybrid CMOS detectors for the Lynx x-ray surveyor high definition x-ray imager

Hull

Falcone

Bray

et al. 2019

J. Astron. Telesc. Instrum. Syst.

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X-ray hybrid CMOS detectors (HCDs) are a promising candidate for future x-ray missions requiring high throughput and fine angular resolution along with large field-of-view, such as the high-definition x-ray imager (HDXI) instrument on the Lynx x-ray surveyor mission concept. These devices offer fast readout capability, low power consumption, and radiation hardness while maintaining high detection efficiency from 0.2 to 10 keV. In addition, x-ray hybrid CMOS sensors may be fabricated with small pixel sizes to accommodate high-resolution optics and have shown great improvements in recent years in noise and spectral resolution performance. In particular, 12.5-μm pitch prototype devices that include in-pixel correlated double sampling capability and crosstalk eliminating capacitive transimpedance amplifiers, have been fabricated and tested. These detectors have achieved read noise as low as 5.4 e − , and we measure the best energy resolution to be 148 eV (2.5%) at 5.9 keV and 78 eV (14.9%) at 0.53 keV. We will describe the characterization of these prototype small-pixel x-ray HCDs, and we will discuss their applicability to the HDXI instrument on Lynx. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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“…OCO-2), but these devices have moderate noise levels and large pixels. Newer test devices have been fabricated and tested with lower noise (~5.5 e-RMS), small pixels (12.5 micron pitch), and on-chip correlated double sampling (Hull et al 2018). Some of these devices are also capable of event driven readout and digitization on-chip.…”

Section: X-ray Hybrid Cmos Detectorsmentioning

confidence: 99%

The high definition x-ray imager (HDXI) instrument on the Lynx X-ray Surveyor

Falcone

Kraft

Bautz

et al. 2018

Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray

Self Cite

View full text Add to dashboard Cite

The Lynx X-ray Surveyor Mission is one of 4 large missions being studied by NASA Science and Technology Definition Teams as mission concepts to be evaluated by the upcoming 2020 Decadal Survey. By utilizing optics that couple fine angular resolution (<0.5 arcsec HPD) with large effective area (~2 m 2 at 1 keV), Lynx would enable exploration within a unique scientific parameter space. One of the primary soft X-ray imaging instruments being baselined for this mission concept is the High Definition X-ray Imager, HDXI. This instrument would achieve fine angular resolution imaging over a wide field of view (~ 22 × 22 arcmin, or larger) by using a finely-pixelated silicon sensor array. Silicon sensors enable large-format/small-pixel devices, radiation tolerant designs, and high quantum efficiency across the entire soft X-ray bandpass. To fully exploit the large collecting area of Lynx (~30x Chandra), without X-ray event pile-up, the HDXI will be capable of much faster frame rates than current X-ray imagers. The planned requirements, capabilities, and development status of the HDXI will be described.

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Small pixel hybrid CMOS x-ray detectors (Erratum)

Cited by 10 publications

References 5 publications

Overview of the high-definition x-ray imager instrument on the Lynx x-ray surveyor

Overview of the high-definition x-ray imager instrument on the Lynx x-ray surveyor

Hybrid CMOS detectors for the Lynx x-ray surveyor high definition x-ray imager

The high definition x-ray imager (HDXI) instrument on the Lynx X-ray Surveyor

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