Velocity map imaging using an in-vacuum pixel detector
Rev. Sci. Instrum. 80, 103105 (2009); doi:10.1063/1.3246811
Published 22 October 2009
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The use of a new type in-vacuum pixel detector in velocity map imaging (VMI) is introduced. The Medipix2 and Timepix semiconductor pixel detectors (256×256 square pixels, 55×55 µm2) are well suited for charged particle detection. They offer high resolution, low noise, and high quantum efficiency. The Medipix2 chip allows double energy discrimination by offering a low and a high energy threshold. The Timepix detector allows to record the incidence time of a particle with a temporal resolution of 10 ns and a dynamic range of 160 µs. Results of the first time application of the Medipix2 detector to VMI are presented, investigating the quantum efficiency as well as the possibility to operate at increased background pressure in the vacuum chamber.
©2009 American Institute of Physics
| History: | Received 7 July 2009; accepted 19 September 2009; published 22 October 2009 |
| Permalink: |
http://link.aip.org/link/?RSINAK/80/103105/1 |
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0034-6748 (print)
1089-7623 (online)
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