Micrometer-resolution imaging using MÖNCH towards G2-less grating interferometry

Micrometer-resolution imaging using MÖNCH : towards G2-less grating interferometry

MÖNCH is a 25 µm-pitch charge-integrating detector aimed at exploring the limits of current hybrid silicon detector technology. The small pixel size makes it ideal for high-resolution imaging. With an electronic noise of about 110 eV r.m.s., it opens new perspectives for many synchrotron application...

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Veröffentlicht in:Journal of synchrotron radiation. - 1994. - 23(2016), Pt 6 vom: 01. Nov., Seite 1462-1473
1. Verfasser: Cartier, Sebastian (VerfasserIn)
Weitere Verfasser: Kagias, Matias, Bergamaschi, Anna, Wang, Zhentian, Dinapoli, Roberto, Mozzanica, Aldo, Ramilli, Marco, Schmitt, Bernd, Brückner, Martin, Fröjdh, Erik, Greiffenberg, Dominic, Mayilyan, Davit, Mezza, Davide, Redford, Sophie, Ruder, Christian, Schädler, Lukas, Shi, Xintian, Thattil, Dhanya, Tinti, Gemma, Zhang, Jiaguo, Stampanoni, Marco
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Journal of synchrotron radiation
Schlagworte:Journal Article Research Support, Non-U.S. Gov't grating interferometry hybrid detectors interpolation silicon detectors
Beschreibung
Zusammenfassung:MÖNCH is a 25 µm-pitch charge-integrating detector aimed at exploring the limits of current hybrid silicon detector technology. The small pixel size makes it ideal for high-resolution imaging. With an electronic noise of about 110 eV r.m.s., it opens new perspectives for many synchrotron applications where currently the detector is the limiting factor, e.g. inelastic X-ray scattering, Laue diffraction and soft X-ray or high-resolution color imaging. Due to the small pixel pitch, the charge cloud generated by absorbed X-rays is shared between neighboring pixels for most of the photons. Therefore, at low photon fluxes, interpolation algorithms can be applied to determine the absorption position of each photon with a resolution of the order of 1 µm. In this work, the characterization results of one of the MÖNCH prototypes are presented under low-flux conditions. A custom interpolation algorithm is described and applied to the data to obtain high-resolution images. Images obtained in grating interferometry experiments without the use of the absorption grating G2 are shown and discussed. Perspectives for the future developments of the MÖNCH detector are also presented
Beschreibung:Date Completed 21.08.2018
Date Revised 11.11.2023
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1600-5775