Characterization of a 2D soft x-ray tomography camera with discrimination in energy bands

A. Romano, D. Pacella, D. Mazon, F. Murtas, P. Malard, L. Gabellieri, B. Tilia, V. Piergotti, G. Corradi

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Abstract

A gas detector with a 2D pixel readout is proposed for a future soft x-ray (SXR) tomography with discrimination in energy bands separately per pixel. The detector has three gas electron multiplier foils for the electron amplification and it offers the advantage, compared with the single stage, to be less sensitive to neutrons and gammas. The energy resolution and the detection efficiency of the detector have been accurately studied in the laboratory with continuous SXR spectra produced by an electronic tube and line emissions produced by fluorescence (K, Fe, and Mo) in the range of 3-17 keV. The front-end electronics, working in photon counting mode with a selectable threshold for pulse discrimination, is optimized for high rates. The distribution of the pulse amplitude has been indirectly derived by means of scans of the threshold. Scans in detector gain have also been performed to assess the capability of selecting different energy ranges. © 2010 American Institute of Physics.
Original languageEnglish
Article number10E523
Pages (from-to)-
JournalReview of Scientific Instruments
Volume81
Issue number10
DOIs
Publication statusPublished - Oct 2010
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Romano, A., Pacella, D., Mazon, D., Murtas, F., Malard, P., Gabellieri, L., ... Corradi, G. (2010). Characterization of a 2D soft x-ray tomography camera with discrimination in energy bands. Review of Scientific Instruments, 81(10), -. [10E523]. https://doi.org/10.1063/1.3494382