Beam test of a dual radiator Cherenkov detector with aerogel and wavelength-shifting acrylic plastic

M. Carl, J. Reinhold, Y. Fujii, J. Haggblad, O. Hashimoto, M. Iijima, A. Matsumura, S. N. Nakamura, H. Nomura, Y. Okayasu, A. Ohtani, M. Oyamada, Y. Sato, L. Tang

Research output: Contribution to journalArticlepeer-review

Abstract

The response of a wavelength shifting acrylic plastic has been determined for particles passing through the plastic and for Cherenkov light incident on the plastic from an external silica-aerogel radiator. The results have been obtained during a beam test at the KEK PS facility. The photoelectron yield for internally created Cherenkov light has been determined as a function of particle velocity. A comparison with an empirical parameterization gives rough estimates for the photon collection efficiency of 39% and 92% for internal Cherenkov emission below and above the critical angle for total internal reflection, respectively. A comparatively low efficiency of ≈13% for external light is likely due to losses in the external aerogel radiator.

Original languageEnglish
Pages (from-to)301-307
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume527
Issue number3
DOIs
Publication statusPublished - 2004 Jul 21

Keywords

  • Aerogel
  • Cherenkov
  • Wavelength shifter

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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