Dr. David R. Smith Profile

Dr. David R. Smith

Lecturer at Brunel Univ

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Publications (15)

Proceedings Article | 1 August 2016 Paper

Electro-optic and radiation damage performance of the CIS115, an imaging sensor for the JANUS optical camera on-board JUICE

M. Soman, E. A. H. Allanwood, A. Holland, K. Stefanov, J. Pratlong, M. Leese, J. P. Gow, D. Smith

Proceedings Volume 9915, 991515 (2016) https://doi.org/10.1117/12.2234290

KEYWORDS: Jupiter, Cameras, Electro optics, Optical sensors, Onboard cameras, Sensors, X-rays, Transistors, Space operations, Electrons

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The Jupiter Icy Moon Explorer (JUICE) has been officially adopted as the next Large class mission by the European Space Agency, with a launch date of 2022. The science payload includes an optical camera, JANUS, which will perform imaging and mapping observations of Jupiter, its moons and icy rings. A 13 slot filter wheel will be used to provide spectral information in order for the JANUS experiment to study the geology and physical properties of Ganymede, Europa and Io, and to investigate processes and structures in the atmosphere of Jupiter. The sensor selected for JANUS is the back-thinned CIS115, a 3 MPixel CMOS Image Sensor from e2v technologies. The CIS115 has a 4-Transistor pixel design with a pinned photodiode to improve signal to noise performance by reducing dark current and allowing for reset level subtraction. The JUICE mission will consist of an 8 year cruise phase followed by a 3 year science phase in the Jovian system. Models of the radiation environment throughout the JUICE mission predict that the End of Life (EOL) non-ionising damage will be equivalent to 1010 protons cm-2 (10 MeV) and the EOL ionising dose will be 100 krad(Si), once the shielding from the spacecraft and instrument design is taken into account. An extensive radiation campaign is therefore being carried out to qualify and characterise the CIS115 for JANUS, as well as other space and terrestrial applications. Radiation testing to take the CIS115 to twice the ionising dose and displacement damage levels was completed in 2015 and the change in sensor performance has been characterised. Good sensor performance has been observed following irradiation and a summary of the key results from the campaign using gamma irradiation (ionising dose) will be presented here, including its soft X-ray detection capabilities, flat-band voltage shift and readout noise. In 2016, further radiation campaigns on flight-representative CIS115s will be undertaken and their results will be disseminated in future publications.

Proceedings Article | 25 September 2012 Paper

The effects of radiation damage on the spectral resolution of the Chandrayaan-1 x-ray spectrometer over the full mission duration

T. Walker, D. Smith

Proceedings Volume 8453, 845332 (2012) https://doi.org/10.1117/12.926983

KEYWORDS: Sensors, Calibration, X-rays, Radiation effects, X-ray detectors, Spectral resolution, Data conversion, Spectroscopy, Single crystal X-ray diffraction, Aerospace engineering

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Proceedings Article | 25 September 2012 Paper

Development of a laboratory based XRF facility for measuring elemental abundance ratios in planetary analogue powder samples

T. Walker, D. Smith

Proceedings Volume 8453, 845319 (2012) https://doi.org/10.1117/12.926978

KEYWORDS: Data modeling, X-rays, Sensors, X-ray detectors, Single crystal X-ray diffraction, Silicon, Statistical analysis, Aluminum, Calibration, Algorithm development

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Proceedings Article | 17 July 2010 Paper

The effects of radiation damage on the spectral resolution of the Chandrayaan-1 x-ray spectrometer

T. Walker, D. Smith, C. Howe, B. Kellett, P. Sreekumar, M. Grande

Proceedings Volume 7742, 774215 (2010) https://doi.org/10.1117/12.858648

KEYWORDS: Calibration, Sensors, X-rays, Radiation effects, Data conversion, Spectral resolution, X-ray detectors, Spectroscopy, Single crystal X-ray diffraction, Solar radiation

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Proceedings Article | 22 July 2008 Paper

Imaging and spectroscopy using a scintillator-coupled EMCCD

David Hall, Andrew Holland, David Smith

Proceedings Volume 7021, 70211Z (2008) https://doi.org/10.1117/12.790965

KEYWORDS: Photons, Scintillators, Charge-coupled devices, X-rays, Interference (communication), Electron multiplying charge coupled devices, Signal to noise ratio, Image processing, Imaging spectroscopy, Signal detection

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Proceedings Article | 22 July 2008 Paper

Radiation study of swept-charge devices for the Chandrayaan-1 X-ray Spectrometer (C1XS) instrument

J. Gow, D. Smith, A. Holland, B. Maddison, C. Howe, M. Grande, P. Sreekumar, J. Huovelin

Proceedings Volume 7021, 70211A (2008) https://doi.org/10.1117/12.791732

KEYWORDS: Single crystal X-ray diffraction, X-rays, Aluminum, Spectroscopy, Silicon, Manganese, Calcium, Target detection, Sensors, Electrons

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Proceedings Article | 18 September 2007 Paper

Characterisation of swept-charge devices for the Chandrayaan-1 x-ray spectrometer (C1XS) instrument

J. Gow, D. Smith, A. Holland, B. Maddison, C. Howe, P. Sreekumar, J. Huovelin, M. Grande

Proceedings Volume 6686, 66860I (2007) https://doi.org/10.1117/12.734062

KEYWORDS: Single crystal X-ray diffraction, X-rays, Aluminum, Spectroscopy, Solar energy, Aerospace engineering, Space operations, Clocks, Radiation effects, Silicon

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Proceedings Article | 15 June 2006 Paper

EMCCDs for space applications

David Smith, David Walton, Richard Ingley, Andrew Holland, Mark Cropper, Peter Pool

Proceedings Volume 6276, 62760K (2006) https://doi.org/10.1117/12.671368

KEYWORDS: Electron multiplying charge coupled devices, Charge-coupled devices, Radiation effects, Silicon, Signal to noise ratio, Space operations, Electrons, Aerospace engineering, Tolerancing, Manufacturing

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Proceedings Article | 25 August 2005 Paper

Gaia astrometric CCDs and focal plane

Alexander Short, Gordon Hopkinson, Anouk Laborie, Pierre Pouny, Cyril Vetel, Tim Eaton, Roy Steward, Andrew Holland, Ian Hutchinson, David Smith, Jos de Bruijne, Philip Gare, Michael Perryman, Giuseppe Sarri, Igor Zayer

Proceedings Volume 5902, 590205 (2005) https://doi.org/10.1117/12.616999

KEYWORDS: Charge-coupled devices, Electrons, Monte Carlo methods, Point spread functions, Calibration, Radiation effects, Data modeling, Telescopes, Modulation transfer functions, Motion models

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Proceedings Article | 25 August 2005 Paper

Application of electron multiplying CCD technology in space instrumentation

P. Pool, D. Morris, D. Burt, R. Bell, A. Holland, D. Smith

Proceedings Volume 5902, 59020A (2005) https://doi.org/10.1117/12.621627

KEYWORDS: Electron multiplying charge coupled devices, Charge-coupled devices, Aerospace engineering, Silicon, Quantum efficiency, Space operations, Interference (communication), Space telescopes, Clocks, Ionizing radiation

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Proceedings Article | 18 August 2005 Paper

MOS CCDs for the wide-field imager on the XEUS spacecraft

A. Holland, C. Castelli, I. Hutchinson, D. Smith, J. Calafell, P. Pool, D. Burt, R. Ambrosi, M. French

Proceedings Volume 5898, 58980Y (2005) https://doi.org/10.1117/12.639708

KEYWORDS: Charge-coupled devices, Sensors, Molybdenum, Electrodes, CCD image sensors, X-rays, Silicon, Imaging systems, Space operations, Field effect transistors

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Proceedings Article | 29 September 2004 Paper

Low-noise charge injection in the CCD22

David Smith, Andrew Holland, Ian Hutchinson, Antony Abbey, Peter Pool, David Burt, David Morris

Proceedings Volume 5501, (2004) https://doi.org/10.1117/12.551393

KEYWORDS: Charge-coupled devices, Electrons, Radiation effects, Molybdenum, Space operations, X-rays, Manufacturing, X-ray telescopes, Calibration, Spectroscopy

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Proceedings Article | 19 February 2004 Paper

CCDs for the rotational velocity spectrometer on GAIA

Andrew Holland, Mark Cropper, David Katz, Ian Hutchinson, Richard Ambrosi, Tim Stevenson, David Smith, Dave Walton, D. Burt, Peter Pool, David Morris, Torgeir Paulsen

Proceedings Volume 5251, (2004) https://doi.org/10.1117/12.517151

KEYWORDS: Charge-coupled devices, Sensors, Spectroscopy, Stars, Telescopes, Space telescopes, Silicon, Photometry, Point spread functions, Optical alignment

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Proceedings Article | 12 January 2004 Paper

Development of the CCDs for the ESA GAIA cornerstone mission

Andrew Holland, Michael Perryman, Cyril Vetel, Roy Steward, Ian Hutchinson, Richard Ambrosi, David Smith, Steve Bowring, David Burt, Tim Eaton, David Morris, Peter Poole, Robert Davancens, Anouk Laborie, Pierre Pouny, Frederic Safa, Igor Zayer, Alexander Short

Proceedings Volume 5167, (2004) https://doi.org/10.1117/12.515401

KEYWORDS: Charge-coupled devices, Sensors, Telescopes, Atrial fibrillation, Space telescopes, Staring arrays, Stars, Space operations, Optical benches, Radiation effects

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Proceedings Article | 11 March 2003 Paper

Proton-induced leakage current in CCDs

David Smith, Andrew Holland, Mark Robbins, Richard Ambrosi, Ian Hutchinson

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461331

KEYWORDS: Charge-coupled devices, Electrons, Photodiodes, Ionization, Aluminum, Copper, Signal generators, Silicon, Radiation effects, Classification systems

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Showing 5 of 15 publications

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