Neutron imaging detector based on the μpIC micro-pixel chamber

J. D. Parker, K. Hattori, H. Fujioka, M. Harada, S. Iwaki, S. Kabuki, Y. Kishimoto, H. Kubo, S. Kurosawa, K. Miuchi, T. Nagae, H. Nishimura, T. Oku, T. Sawano, T. Shinohara, J. Suzuki, A. Takada, T. Tanimori, K. Ueno

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


We have developed a prototype time-resolved neutron imaging detector employing the micro-pixel chamber (μPIC), a micro-pattern gaseous detector, coupled with a field programmable gate array-based data acquisition system for applications in neutron radiography at high-intensity neutron sources. The prototype system, with an active area of 10×10 cm 2 and operated at a gas pressure of 2 atm, measures both the energy deposition (via time-over-threshold) and three-dimensional track of each neutron-induced event, allowing the reconstruction of the neutron interaction point with improved accuracy. Using a simple position reconstruction algorithm, a spatial resolution of 349±36μm was achieved, with further improvement expected. The detailed tracking allows strong rejection of background gamma-rays, resulting in an effective gamma sensitivity of 10 -12 or less, coupled with stable, robust neutron identification. The detector also features a time resolution of 0.6μs.

Original languageEnglish
Pages (from-to)23-31
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 2013 Jan 1


  • Gaseous detector
  • Micro-pattern detector
  • Neutron imaging


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