A quasi-non-invasive ultra-thin luminophore foil detector system for secondary beam monitoring

F. Berg, D. N. Grigoriev, Z. Hodge, P. R. Kettle, E. A. Kozyrev, A. G. Lemzyakov, A. V. Petrozhitsky, A. Popov

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High-intensity secondary beams play a vital role in today's particle physics and materials science research and require suitable detection techniques to adjust beam characteristics to optimally match experimental conditions. To this end we have developed a quasi-non-invasive, ultra-thin, CsI(Tl) luminophore foil detector system, based on CCD-imaging. We have used this to quantify the beam characteristics of an intensity-frontier surface muon beam used for next-generation charged lepton-flavour violation (cLFV) search experiments at the Paul Scherrer Institut (PSI) and to assess the possible use for a future High-intensity Muon Beam (HiMB-project), currently under study at PSI. An overview of the production and intrinsic characteristics of such foils is given and their application in a high-intensity beam environment.

Original languageEnglish
Article number163298
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 1 Mar 2020


  • Beam diagnostics
  • CsI(Tl)
  • High intensity
  • Luminophore
  • Thin scintillator films


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