Synchrotron tests of 3D Medipix2 and TimePix X-ray detectors

MacRaighne, A. et al. (2010) Synchrotron tests of 3D Medipix2 and TimePix X-ray detectors. In: 2009 IEEE Nuclear Science Symposium Conference Record (NSS/MIC), Orlando, FL, USA, 24 Oct - 01 Nov 2009, pp. 2145-2150. ISBN 9781424439614 (doi:10.1109/NSSMIC.2009.5402093)

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Publisher's URL: http://dx.doi.org/10.1109/NSSMIC.2009.5402093

Abstract

In this article we report on the use micro-focus synchrotron X-ray radiation and pion beams to compare the detection efficiencies and charge sharing properties of novel 3D detectors to that of the current planar technology. Detector substrates are bump-bonded to the Medipx2 and Timepix chips. 55¿m square pixel maps of the detection efficiencies have been produced using X-ray and MIP beams. For X-rays, a drop of 3-4% detection efficiency over the pixel area was found due to the central electrode. The corner electrodes show no degradation in efficiency compared to that of the planar device. For MIPs a drop of 0.5% in efficiency due to the central electrode was observed. Evidence of a considerable reduction in charge sharing in the 3D detectors compared to the planar devices is also shown.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:O'Shea, Professor Val and Maneuski, Dr Dima and Gersabeck, Mr Marco and MacRaighne, Dr Aaron and Ferre Llin, Dr Lourdes and Bates, Dr Richard and Plackett, Dr Richard and Gligorov, Dr Vladmir and Rodrigues, Dr Eduardo and Eklund, Professor Lars and Parkes, Dr Christopher
Authors: MacRaighne, A., Akiba, K.C., Alianelli, L., Artuso, M., Bates, R., Bayer, F., Buytaert, J., Collins, P., Crossley, M., Eklund, L., Fleta, C., Gallas, A., Gandelman, M., Gersabeck, M., Gimenez, E.N., Gligorov, V., Huse, T., John, M., Ferre Llin, L., Lozano, M., Maneuski, D., Marchal, J., Michel, T., Nicol, M., Pellegrini, G., Perira, D.E., Plackett, R., O'Shea, V., Parkes, C., Rodrigues, E., Sawhney, K.J.S., Tartoni, N., and Vazquez, P.
College/School:College of Science and Engineering > School of Physics and Astronomy
ISSN:1082-3654
ISBN:9781424439614

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
503271Waferscale CZT Detector ProcessingValentine O'SheaScience & Technologies Facilities Council (STFC)ST/G004471/1Physics and Astronomy