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

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


Dive into the research topics of 'Preliminary study of a topological trigger device for cosmic-ray detectors'. Together they form a unique fingerprint.

Cite this