Scintillating microfibers as a high-resolution tracking detector for hybrid-emulsion experiment

A. Ichikawa, S. Aoki, K. Imai, M. Kaneko, Y. Kondo, K. Nakazawa, H. Tanaka, K. Yamamoto, T. Yoshida

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We have developed a very thin and high precision tracking detector using a coherent bundle of plastic scintillating microfibers for an emulsion-counter hybrid experiment to search for double-strangeness nuclei. The purpose of this detector is to measure the position and angle of short-lived particles, such as low-momentum Ξ- particles produced in (K-, K+) reactions. The dependence of the light yield and attenuation length of fibers on the density of the wavelength shifter and the fiber diameter have been studied. A test experiment with a prototype fiber detector and emulsion has been carried out using 0.5 GeV/c protons. The tracks tagged by the fiber detector were identified in the emulsion. By comparing the position and the angle of tracks predicted by the detector with the measurements of the tagged tracks in the emulsion, positions were determined with an r.m.s precision of 113 μm and angles were determined with an r.m.s precision of 25 mrad with a very thin detector of about 4 mm thickness.

Original languageEnglish
Pages (from-to)220-229
Number of pages10
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume417
Issue number2-3
DOIs
Publication statusPublished - 1998 Nov 11
Externally publishedYes

Keywords

  • Fiber plastics
  • KEK PS
  • Nuclear emulsion
  • Scintillation counter
  • Track data analysis
  • Track sensitive

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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