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Article
Title	The Medipix3RX: A high resolution, zero dead-time pixel detector readout chip allowing spectroscopic imaging
Author(s)	Ballabriga, R (CERN) ; Alozy, J (CERN) ; Blaj, G (CERN) ; Campbell, M (CERN) ; Fiederle, M (Freiburg U.) ; Frojdh, E (CERN) ; Heijne, E H M (CERN ; IEAP CTU, Prague ; NIKHEF, Amsterdam) ; Llopart, X (CERN) ; Pichotka, M (Freiburg U.) ; Procz, S (Freiburg U.) ; Tlustos, L (Freiburg U.) ; Wong, W (CERN)
Publication	2013
Imprint	2013
In:	JINST 8 (2013) C02016
In:	iWoRID 2012 - 14th International Workshop on Radiation Imaging Detectors, Figueira Da Foz, Portugal, 1 - 5 Jul 2012, pp.C02016
DOI	10.1088/1748-0221/8/02/C02016
Subject category	Detectors and Experimental Techniques
Abstract	The Medipix3 chips have been designed to permit spectroscopic imaging in highly segmented hybrid pixel detectors. Spectral degradation due to charge sharing in the sensor has been addressed by means of an architecture in which adjacent pixels communicate in the analog and digital domains on an event-by-event basis to reconstruct the deposited charge in a neighbourhood prior to the assignation of the hit to a single pixel. The Medipix3RX chip architecture is presented. The first results for the characterization of the chip with 300 μm thick Si sensors are given.   72e(−) r.m.s. noise and   40e(−) r.m.s. of threshold dispersion after chip equalization have been measured in Single Pixel Mode of operation. The homogeneity of the image in Charge Summing mode is comparable to the Single Pixel Mode image. This demonstrates both modes are suitable for X-ray imaging applications.

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