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Applied Physics A

, Volume 74, Supplement 1, pp s1604–s1606 | Cite as

High-position-resolution scintillation neutron-imaging detector by crossed-fiber readout with novel centroid-finding method

  • M. Katagiri
  • K. Toh
  • K. Sakasai
  • M. Matsubayashi
  • A. Birumachi
  • H. Takahashi
  • M. Nakazawa

Abstract.

Aiming at high-position-resolution and high-counting-rate neutron imaging, a novel centroid-finding method is proposed for a scintillation neutron-imaging detector with crossed-fiber readout. Crossed wavelength-shifting fibers are arranged on and under the scintillator. Luminescences generated in the scintillator are emitted and detected by a few fibers surrounding the incident point of a neutron. In the novel method, X and Y positions of the incident neutron are decided by coincidence of a central signal and neighboring signals, respectively. By fundamental experiments using a ZnS:Ag/6LiF scintillator of 0.5-mm thickness and crossed wavelength-shifting fibers with a size of 0.5×0.5 mm2, it was confirmed that the position resolution is about 0.5 mm and the limitation of the neutron-counting rate is 320 kcps.

PACS: 29.40.Mc; 42.79.Pw 

Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • M. Katagiri
    • 1
  • K. Toh
    • 1
  • K. Sakasai
    • 1
  • M. Matsubayashi
    • 1
  • A. Birumachi
    • 1
  • H. Takahashi
    • 2
  • M. Nakazawa
    • 2
  1. 1.Advanced Science Research Center, JAERI, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, JapanJP
  2. 2.Department of Quantum Engineering and Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, JapanJP

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