EAS Publications Series
Volume 37, 2009Astrophysics Detector Workshop 2008
|Page(s)||181 - 188|
|Published online||11 June 2009|
P. Kern (ed)
EAS Publications Series, 37 (2009) 181-188
Gas pixel detector for x-ray observation
CEA, Irfu, SPP, Centre de Saclay, 91191 Gif-sur-Yvette, France;
2 CERN, 1211 Genève 23, Switzerland
3 NIKHEF, Kruislaan 409, Amsterdam 1098 SJ, The Netherlands
Corresponding author: firstname.lastname@example.org
We report on the status of the R&D for a digital Time Projection Chamber based on Micromegas detectors using the CMOS chip TimePix as a direct readout anode protected by highly resistive a-Si:H layer. A small chamber was built as a demonstrator of the 2-D and 3-D imaging capabilities of this technique. We illustrate the new capabilities of this detector for x-ray observation with data taken from radioactive sources. This small TPC is a very useful tool both for studying gas properties thanks to its good efficiency for single electrons, and for reconstructing photoelectron direction for use as a soft x-ray polarimeter.
© EAS, EDP Sciences, 2009
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