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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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Georg Gademann,1 Ymkje Huismans,1 Arjan Gijsbertsen,1 Julia Jungmann,1 Jan Visschers,2 and Marc J. J. Vrakking1
1FOM-Institute for Atomic and Molecular Physics (AMOLF), Science Park 113, 1098 XG Amsterdam, The Netherlands
2National Institute for Sub-Atomic Physics (Nikhef), Science Park 105, 1098 XG Amsterdam, The Netherlands

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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KEYWORDS and PACS

Keywords
PACS
  • 29.40.Gx
    Tracking and position-sensitive detectors
  • 29.40.Wk
    Solid-state radiation detectors
  • 07.50.-e
    Electrical and electronic instruments and components
  • 84.30.-r
    Electronic circuits
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0034-6748 (print)   1089-7623 (online)
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