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Medipix3RX: Characterizing the Medipix3 Redesign With Synchrotron Radiation

DOI: 10.1109/TNS.2015.2425227 DOI Help

Authors: Eva Gimenez-navarro (Diamond Light Source) , Rafael Ballabriga (CERN) , Gabriel Blaj (CERN) , Michael Campbell (CERN) , Igor Dolbnya (Diamond Light Source) , Erik Frodjh (CERN) , Ian Horswell (Diamond Light Source) , Xavier Llopart-cudie (CERN) , Julien Marchal (Diamond Light Source) , John Mcgrath (Diamond Light Source) , David Omar (Diamond Light Source) , Richard Plackett (Diamond Light Source) , Kawal Sawhney (Diamond Light Source) , Nicola Tartoni (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Ieee Transactions On Nuclear Science , VOL 62 (3) , PAGES 1413 - 1421

State: Published (Approved)
Published: June 2015

Abstract: The Medipix3RX is the latest version of the Medipix3 photon counting ASICs, which implements two new operational modes, with respect to the Medipix2 ASIC, aimed at eliminating charge shared events (referred to as Charge Summing Mode (CSM)) and at providing spectroscopic information (referred to as Colour Mode (CM)). The Medipix3RX is a redesign of the Medipix3v0 ASIC and corrects for the underperformance of CSM features observed in the previous version. This paper presents the results from synchrotron X-rays tests to evaluate the Medipix3RX ASIC performance. The newly implemented CSM algorithm eliminates the charge sharing effect at the same time as allocating the event to the readout pixel corresponding to the sensor pixel where the X-ray photon impinged. The new pixel trimming circuit led to a reduced dispersion between pixels. Further results of the linearity for all the gain modes, energy resolution and pixel uniformity are also presented.

Journal Keywords: Medipix3 RX; micro focused beam; photon; counting detectors; synchrotron applications; x-ray detectors;

Subject Areas: Physics

Instruments: B16-Test Beamline

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