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Characterisation of an epitaxial GaAs/Medipix2 detctor using fluorescence photons
CERN.
CERN.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (STC)ORCID iD: 0000-0002-8325-5177
Helsinku University of Technology.
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2008 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, Vol. 591, no 1, 42-45 p.Article in journal (Refereed) Published
Abstract [en]

A high-purity GaAs sensor of 110 μm thickness has been bump bonded to a Medipix2 readout chip. The room temperature spectroscopic response of this device to fluorescence photons in the energy range from 8 to 28 keV is presented and compared to the response of a 300 μm thick Si sensor, also bonded to a Medipix2 chip. The measured photopeak responses are used to calibrate both detectors. The depth of depletion of the GaAs sensor is estimated to be 50 μm at 140 V sensor bias voltage from measurements made using the 8 keV Kα line of a Cu target X-ray tube.

Place, publisher, year, edition, pages
Elsevier , 2008. Vol. 591, no 1, 42-45 p.
Keyword [en]
GaAs; Medipix2; X-ray imaging
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-7708DOI: 10.1016/j.nima.2008.03.020ISI: 000257529300010Scopus ID: 2-s2.0-44649123539OAI: oai:DiVA.org:miun-7708DiVA: diva2:128040
Conference
9th International Workshop on Radiation Imaging Detectors, Jul 22-26, 2007, Nuremberg, Germany
Note
9th International Workshop on Radiation Imaging Detectors, JUL 22-26, 2007, Nuremberg, GERMANYAvailable from: 2008-12-11 Created: 2008-12-11 Last updated: 2011-07-21Bibliographically approved

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Fröjdh, Christer
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf