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Towards hybrid pixel detectors for energy-dispersive or soft X-ray photon science.

ABSTRACT: JUNGFRAU (adJUstiNg Gain detector FoR the Aramis User station) is a two-dimensional hybrid pixel detector for photon science applications at free-electron lasers and synchrotron light sources. The JUNGFRAU?0.4 prototype presented here is specifically geared towards low-noise performance and hence soft X-ray detection. The design, geometry and readout architecture of JUNGFRAU?0.4 correspond to those of other JUNGFRAU pixel detectors, which are charge-integrating detectors with 75?µm × 75?µm pixels. Main characteristics of JUNGFRAU?0.4 are its fixed gain and r.m.s. noise of as low as 27?e(-) electronic noise charge (<100?eV) with no active cooling. The 48 × 48 pixels JUNGFRAU?0.4 prototype can be combined with a charge-sharing suppression mask directly placed on the sensor, which keeps photons from hitting the charge-sharing regions of the pixels. The mask consists of a 150?µm tungsten sheet, in which 28?µm-diameter holes are laser-drilled. The mask is aligned with the pixels. The noise and gain characterization, and single-photon detection as low as 1.2?keV are shown. The performance of JUNGFRAU?0.4 without the mask and also in the charge-sharing suppression configuration (with the mask, with a `software mask' or a `cluster finding' algorithm) is tested, compared and evaluated, in particular with respect to the removal of the charge-sharing contribution in the spectra, the detection efficiency and the photon rate capability. Energy-dispersive and imaging experiments with fluorescence X-ray irradiation from an X-ray tube and a synchrotron light source are successfully demonstrated with an r.m.s. energy resolution of 20% (no mask) and 14% (with the mask) at 1.2?keV and of 5% at 13.3?keV. The performance evaluation of the JUNGFRAU?0.4 prototype suggests that this detection system could be the starting point for a future detector development effort for either applications in the soft X-ray energy regime or for an energy-dispersive detection system.

SUBMITTER: Jungmann-Smith JH

PROVIDER: S-EPMC5297903 | biostudies-other | 2016 Mar

REPOSITORIES: biostudies-other

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Towards hybrid pixel detectors for energy-dispersive or soft X-ray photon science.

Jungmann-Smith J H JH Bergamaschi A A Brückner M M Cartier S S Dinapoli R R Greiffenberg D D Huthwelker T T Maliakal D D Mayilyan D D Medjoubi K K Mezza D D Mozzanica A A Ramilli M M Ruder Ch Ch Schädler L L Schmitt B B Shi X X Tinti G G

Journal of synchrotron radiation 20160210 2

JUNGFRAU (adJUstiNg Gain detector FoR the Aramis User station) is a two-dimensional hybrid pixel detector for photon science applications at free-electron lasers and synchrotron light sources. The JUNGFRAU 0.4 prototype presented here is specifically geared towards low-noise performance and hence soft X-ray detection. The design, geometry and readout architecture of JUNGFRAU 0.4 correspond to those of other JUNGFRAU pixel detectors, which are charge-integrating detectors with 75 µm × 75 µm pixel ...[more]

PMID: 26917124

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Dataset Information

Towards hybrid pixel detectors for energy-dispersive or soft X-ray photon science.

Publications

Towards hybrid pixel detectors for energy-dispersive or soft X-ray photon science.

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