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

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

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999nimpa.421...60g&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 421, Issue 1-2, p. 60-68.

Physics

Scientific paper

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 ~0.6mm in σ with a detection efficiency >97% has been obtained for charged particles of 5GeV/c passing through 2×2mm 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.

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