Development of a gamma-ray tracking detector and its performance test

ORAL

Abstract

The gamma-ray tracking detector is a germanium detector realizing both high efficiency and Compton background suppression by reconstructing the scattering process of the incident gamma-rays from the positions and energy deposits of the gamma-rays at each interaction points in the detector. Its high position resolution is also beneficial for accurate Doppler correction. In the tracking detector, the interaction positions are determined three-dimensionally with high position resolution by analyzing the signal waveform from the segmented electrodes. We have measured waveforms for different interaction points of gamma-rays using a GRETINA Quad Detector. The experiment was performed using a gamma-ray beam from the GACKO beam line at the NewSUBARU electron storage ring facility. The three dimensional position of the interaction in points are selected first by collimating the incident gamma-rays and then by measuring the gamma-rays scatted at 90 degree in the detector by using a narrow slit. Obtained waveforms were compared with the simulated waveform.


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Presenters

  • Asahi Kohda

    RCNP, Osaka Univ., RCNP, Osaka Uni., Japan

Authors

  • Asahi Kohda

    RCNP, Osaka Univ., RCNP, Osaka Uni., Japan

  • Nori Aoi

    RCNP, Osaka Univ., RCNP, Osaka University, Research Center for Nuclear Physics, Osaka University, RCNP Osaka University, RCNP, Osaka Uni., Japan

  • Yasutaka Yamamoto

    RCNP, Osaka Univ., RCNP, Osaka University, Research Center for Nuclear Physics, Osaka University

  • Eiji Ideguchi

    RCNP, Osaka Univ., RCNP, Osaka University, Research Center for Nuclear Physics, Osaka University

  • Kumar Raju Mukhi

    RCNP, Osaka Univ., Research Center for Nuclear Physics, Osaka University

  • Thi Ha Hoang

    RCNP, Osaka Univ., RCNP, Osaka University, Research Center for Nuclear Physics, Osaka University

  • Tung Thanh Pham

    RCNP, Osaka Univ.

  • Tatsushi Shima

    RCNP, Osaka Univ., RCNP, Osaka University

  • Viljamaa Topi Benjamin

    Univ. of Jyväskylä, Finland

  • Shuji Miyamoto

    Univ. of Hyogo

  • Toshiyuki Shizuma

    QST

  • Nobu Imai

    Center for Nuclear Study, the University of Tokyo, CNS, Univ. of Tokyo, Center for Nuclear Study, University of Tokyo, CNS, the University of Tokyo

  • Kathrin Wimmer

    The University of Tokyo, Univ. of Tokyo, Department of Physics, The University of Tokyo, the University of Tokyo, University of Tokyo

  • Pieter Doornenbal

    RIKEN Nishina Center

  • Rudrajyoti Palit

    TIFR, India