Development of an automated multisample scanning system for nuclear track etched detectors

H. Tawara*, K. Eda, K. Takahashi, T. Doke, Nobuyuki Hasebe, S. Kodaira, S. Ota, M. Kurano, N. Yasuda

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)


    We have developed an automated scanning system for handling a large number of nuclear track etched detectors (NTEDs). The system consists of a magazine station for sample storage, a robotic sample loader, a high-speed wide-area digital imaging microscope device (modified HSP-1000) and PitFit software for analyzing etch pits. We investigated the performance of the system using CR-39 plastic NTED samples exposed to high-energy heavy ions and fast neutrons. When applying the system to fast neutron dosimetry, the typical scanning speed was about 100 samples/day with a scan area of 4 cm2/sample. The neutron doses obtained from a fully automatic measurement agreed closely with those from a semi-automatic measurement. These results indicate the feasibility of fully automatic scanning of CR-39 personal neutron dosimeters. The system is also expected to be applicable to future large-scale experiments using CR-39 plastic and BP-1 glass NTEDs for observing ultraheavy galactic cosmic rays with high mass resolution.

    Original languageEnglish
    Pages (from-to)475-480
    Number of pages6
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Issue number3
    Publication statusPublished - 2008 Aug 11


    • CR-39
    • Etch pit
    • Neutron dosimetry
    • Nuclear track etched detector
    • Robotic sample loader
    • Scanning system

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics


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