A Development of Time-Resolved Emulsion Detector by Multi-Stage Shifter

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  • 多段シフターによる時間軸をもつ原子核乾板検出器の開発
  • 実験技術 多段シフターによる時間軸をもつ原子核乾板検出器の開発
  • ジッケン ギジュツ タダン シフター ニ ヨル ジカンジク オ モツ ゲンシカク カンパン ケンシュツキ ノ カイハツ

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Abstract

<p>Nuclear emulsion is a powerful tracking device that can record the three-dimensional trajectory of charged particles within 1 μm spatial resolution. We are promoting GRAINE project which is 10 MeV–100 GeV cosmic γ-ray observations with a precise (0.08° at 1–2 GeV) and polarization-sensitive large-aperture-area (～10 m2) emulsion telescope by repeating long duration balloon flights. We are developing multi-stage shifter which allows us to give a timing information to emulsion tracks with ～seconds or below. The multi-stage shifter opened feasibilities of precise cosmic γ-ray observations, GRAINE, as well as precise measurements of ν –N interactions, J-PARC T60. ～Millisecond time resolution in a balloon-borne experiment, ～second time resolution for 126.7 days in an accelerator ν experiment and ～106 time-resolved numbers are being achieved. New model of multi-stage shifter is also being developed for future experiments.</p>

Journal

  • Butsuri

    Butsuri 72 (10), 734-742, 2017-10-05

    The Physical Society of Japan

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