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Hyperfine Interactions

, Volume 229, Issue 1–3, pp 169–174 | Cite as

Investigations into beam monitors at the AE\(\bar {g}\)IS experiment

  • A. Sosa
  • E. Bravin
  • J. Harasimowicz
  • A. Jeff
  • C. P. Welsch
  • The AEḡIS collaboration
Article

Abstract

Detailed diagnostic of antiproton beams at low energies is required for essentially all experiments at the Antiproton Decelerator (AD), but will be particularly important for the future Extra Low ENergy Antiproton ring (ELENA) and its keV beam lines to the different experiments. Many monitors have been successfully developed and operated at the AD, but in particular beam profile monitoring remains a challenge. A dedicated beam instrumentation and detector test stand has recently been setup at the AE\(\bar {g}\)IS experiment (Antimatter Experiment: Gravity, Interferometry, Spectroscopy). Located behind the actual experiment, it allows for parasitic use of the antiproton beam at different energies for testing and calibration. With the aim to explore and validate different candidate technologies for future low energy beam lines, as well as the downstream antihydrogen detector in AE\(\bar {g}\)IS, measurements have been carried out using Silicon strip and pixel detectors, a purpose-built secondary emission monitor and emulsions. Here, results from measurements and characterization of the different detector types with regard to their future use at the AD complex are presented.

Keywords

Beam diagnostics Beam monitors Antiprotons Secondary electron emission 

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Copyright information

© European Union 2014

Authors and Affiliations

  • A. Sosa
    • 1
    • 2
  • E. Bravin
    • 1
  • J. Harasimowicz
    • 1
  • A. Jeff
    • 2
  • C. P. Welsch
    • 2
  • The AEḡIS collaboration
  1. 1.CERN - European Organization for Nuclear ResearchCH-1211 Geneva 23Switzerland
  2. 2.University of Liverpool and the Cockcroft InstituteLiverpoolUK

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