Preliminary study of a topological trigger device for cosmic-ray detectors

A. Gorine, K. Kasahara, M. Kobayashi, K. Kuroda, T. Maki, I. Manuilov, H. Murakami, K. Okada, A. Riazantsev, F. Takeutchi, T. Tamura, Shoji Torii*, T. Yamagami, Y. Yoshimura

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In view of implementing a topological trigger criterion in cosmic-ray detectors for efficient selection of required events a preliminary test has been done with a scintillating-fibre hodoscope using a position-sensitive photomultiplier. A space resolution of ∼ 0.6 mm in σ with a detection efficiency > 97% has been obtained for charged particles of 5 GeV/c passing through 2 x 2 mm squared fibres. A custom-made discriminator, suppressing the cross-talk between adjacent fibres, allowed a better definition of track position even at high incident angles compared to the simple threshold discriminators. Simplicity as well as reliability of the prototype allow us to foresee a topological trigger device incorporated in different type of detectors, such as cosmic gamma or electron telescopes, solar neutron detectors and so on.

Original languageEnglish
Pages (from-to)60-68
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-2
Publication statusPublished - 1999 Jan 21
Externally publishedYes

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics


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