title: Analysis system of submicron particle tracks in the fine-grained nuclear emulsion by a combination of hard x-ray and optical microscopy.
abstract: Analyses of nuclear emulsion detectors that can detect and identify charged particles or radiation as tracks have typically utilized optical microscope systems because the targets have lengths from several μm to more than 1000 μm. For recent new nuclear emulsion detectors that can detect tracks of submicron length or less, the current readout systems are insufficient due to their poor resolution. In this study, we developed a new system and method using an optical microscope system for rough candidate selection and the hard X-ray microscope system at SPring-8 for high-precision analysis with a resolution of better than 70 nm resolution. Furthermore, we demonstrated the analysis of submicron-length tracks with a matching efficiency of more than 99% and position accuracy of better than 5 μm. This system is now running semi-automatically.
authors.affiliation: Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Aichi 464-8602, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Naka
authors.affiliation: Department of Physics, Graduated School of Science, Nagoya University, Nagoya 464-8602, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Asada
authors.affiliation: Department of Physics, Graduated School of Science, Nagoya University, Nagoya 464-8602, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yoshimoto
authors.affiliation: Department of Physics, Graduated School of Science, Nagoya University, Nagoya 464-8602, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Katsuragawa
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Hyogo 679-5198, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Suzuki
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Hyogo 679-5198, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Terada
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Hyogo 679-5198, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Takeuchi
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Hyogo 679-5198, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Uesugi
authors.affiliation: Department of Physics, Graduated School of Science, Nagoya University, Nagoya 464-8602, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Tawara
authors.affiliation: Department of Physics, Graduated School of Science, Nagoya University, Nagoya 464-8602, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Umemoto
authors.affiliation: Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Aichi 464-8602, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kimura