Title :
Synchrotron tests of 3D Medipix2 and TimePix X-ray detectors
Author :
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. ; Llin
Author_Institution :
Dept. of Phys. & Astron., Univ. of Glasgow, Glasgow, UK
fDate :
Oct. 24 2009-Nov. 1 2009
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.
Keywords :
X-ray detection; nuclear electronics; silicon radiation detectors; synchrotron radiation; 3D detectors; MIP beams; Medipx2 chip; TimePix X-ray detectors; central electrode; charge sharing properties; current planar technology; detection efficiencies; micro-focus synchrotron X-ray radiation; pion beams; square pixel maps; Synchrotrons; Testing; X-ray detectors;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5402093
