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On the Charge Collection Efficiency of the PERCIVAL Detector
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2016 (English)In: Journal of Instrumentation, E-ISSN 1748-0221, Vol. 11, no 12, article id C12032Article in journal (Refereed) Published
Abstract [en]

The PERCIVAL soft X-ray imager is being developed by DESY, RAL, Elettra, DLS, and PAL to address the challenges at high brilliance Light Sources such as new-generation Synchrotrons and Free Electron Lasers. Typical requirements for detector systems at these sources are high frame rates, large dynamic range, single-photon counting capability with low probability of false positives, high quantum efficiency, and (multi)-mega-pixel arrangements. PERCIVAL is a monolithic active pixel sensor, based on CMOS technology. It is designed for the soft X-ray regime and, therefore, it is post-processed in order to achieve high quantum efficiency in its primary energy range (250 eV to 1 keV) . This work will report on the latest experimental results on charge collection efficiency obtained for multiple back-side-illuminated test sensors during two campaigns, at the P04 beam-line at PETRA III, and the CiPo beam-line at Elettra, spanning most of the primary energy range as well as testing the performance for photon-energies below 250 eV . In addition, XPS surface analysis was used to cross-check the obtained results.

Place, publisher, year, edition, pages
IOP , 2016. Vol. 11, no 12, article id C12032
Keywords [en]
Instrumentation for FEL, Solid state detectors, X-ray detectors
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hig:diva-37244DOI: 10.1088/1748-0221/11/12/C12032OAI: oai:DiVA.org:hig-37244DiVA, id: diva2:1605347
Available from: 2021-10-22 Created: 2021-10-22 Last updated: 2024-07-04Bibliographically approved

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Reza, Salim

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