H. van der Graaf
- Gas pixel detector for x-ray observation
- EAS Publications Series
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
- Institute for High Energy Physics (IHEF)
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.
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- Proceedings title: Astrophysics Detector Workshop 2008: Nice, France, 17-20 November 2008
Publisher: European Astronomical Society (EAS)
Place of publication: Versoix
Editors: P. Kern
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