Characterisation of a GaAs(Cr) Medipix2 hybrid pixel detector
✍ Scribed by Lukas Tlustos; Georgy Shelkov; Oleg P. Tolbanov
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 959 KB
- Volume
- 633
- Category
- Article
- ISSN
- 0168-9002
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A high-purity GaAs sensor of 110 mm 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 mm thick Si sensor, also bonded to
The charge sharing effect among adjacent pixels of a Medipix2 pixel detector comes from the lateral spread of charges generated from the interaction of an ionizing particle in silicon. The charge sharing follows specific ionizing losses of particle along its track in silicon influenced by several ef