Search Results 1-20 of 65

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  • Development of pulse shape discrimination for Cherenkov lights in liquid scintillator  [in Japanese]

    FUKADA Yosiyuki , ANZAI Daisuke , KAMEI Yuto , Narengerile , OBATA Akira , MORIYAMA Shigetaka , HIRAIDE Katsuki , OGAWA Izumi , GUNJI Takahiro , HAYAMI Ryohei , TSUKADA Satoru , KUROSAWA Shunsuke

    … With a liquid scintillation used for ZICOS experiment, we measured pulse shapes in case of several radio isotopes, 60Co, 137Cs, 133Ba, and 57Co. Taking FADC timing at 60 nsec for the peak position, FADC spectra from 58.5 nsec to 80 nsec were almost same shape for each RI, however, before 58.5 nsec, we have found that those were different shape. …

    BULLETIN OF MIYAGI UNIVERSITY OF EDUCATION (55), 141-150, 2021-01-29

    IR 

  • High-light-yield calcium iodide (CaI2) scintillator for astroparticle physics

    飯田 崇史 , Takashi IIDA , Kei Kamada , Masao Yoshino , Kyoung Jin Kim , Koichi Ichimura , Akira Yoshikawa

    … We also performed a pulse shape discrimination study using alpha and gamma-ray sources, confirming after a brief analysis that CaI2 has excellent pulse shape discrimination potential. …

    Nuclear Instruments and Methods in Physics Research Section A (958), 162629, 2020-04

    IR 

  • Development of pulse shape discrimination for Cherenkov lights in liquid scintillator

    FUKUDA Yoshiyuki , ANZAI Daisuke , KAMEI Yuto , Narengerile , OBATA Akira , MORIYAMA Shigetaka , HIRAIDE Katsuki , OGAWA Izumi , GUNJI Takahiro , HAYAMI Ryohei , TSUKADA Satoru , KUROSAWA Shunsuke

    宮城教育大学紀要 55, 141-150, 2020

  • Pulse-shape discrimination potential of new scintillator material: La-GPS:Ce

    飯田 崇史 , K. Mizukoshi , Takashi IIDA , I. Ogawa , K. Shimizu , S. Kurosawa , K. Kamada , M. Yoshino , A. Yoshikawa

    … For resource exploration, the particle identification should be completed in a single pulse only. … The pulse-shape discrimination of the scintillator was confirmed. … Using digital filter method (shape indicator), F-measure to evaluate these separation between α and γ particles was obtained to be 0.92 at 0.66 MeVee. …

    Journal of instrumentation 14(06), P06037, 2019-06

    IR 

  • Precise pulse shape measurement of Cherenkov light using sub-MeV electrons from Sr-90/Y-90 beta source

    FUKUDA Yoshiyuki , ANZAI Daisuke , KAMEI Yuto , Narengerile , OBATA Akira , MORIYAMA Shigetaka , HIRAIDE Katsuki , OGAWA Izumi , GUNJI Takahiro , HAYAMI Ryohei , TSUKADA Satoru , KUROSAWA Shunsuke

    … The precise spectral pulse shape from Cherenkov lights was directly measured by using sub-MeV electrons from 90Sr/90Y beta source. … The observed shape was clearly different from the shape of scintillation light. … The pulse rise and fall (decay) time for Cherenkov light were 0.8 ns and 2.5 ns, respectively. …

    宮城教育大学紀要 54, 169-176, 2019

    IR 

  • A measurement of the scintillation decay time constant of nuclear recoils in liquid xenon with the XMASS-I detector

    XMASS Collaboration , Abe K. , Hiraide K. , Ichimura K. , Kishimoto Y. , Kobayashi K. , Kobayashi M. , Moriyama S. , Nakahata M. , Ogawa H. , Sato K. , Sekiya H. , Suzuki T. , Takachio O. , Takeda A. , Tasaka S. , Yamashita M. , Yang B. S. , Kim N. Y. , Kim Y. D. , Itow Y. , Kanzawa K. , Masuda K. , Martens K. , Suzuki Y. , Xu B. D. , Miuchi K. , Oka N. , Takeuchi Y. , Kim Y. H. , Lee K. B. , Lee M. K. , Fukuda Y. , Miyasaka M. , Nishijima K. , Fushimi K. , Kanzaki G. , Nakamura S.

    … We also evaluated the performance of pulse shape discrimination between NR and electron recoil (ER) with the aim of reducing the electromagnetic background in WIMP searches. …

    Journal of Instrumentation (13), 12032, 2018-12

    IR 

  • Discrimination of Cherenkov light in Liquid Scintillator for Neutrinoless Double Beta Decay Experiment  [in Japanese]

    FUKUDA Yoshiyuki , KAMEI Yuto , Narengerile , OBATA Akira , MORIYAMA Shigetaka , OGAWA Izumi , GUNJI Takahiro , HAMAYA Ryohei , TSUKADA Satoru

    … For the discrimination of Cherenkov light, we measured the timing pulse shape of Zr loaded liquid scintillator using FADC digitizer, and we found an inconsistent pulse shape at the rise timing with the template of scintillation. … Also the event with an inconsistent pulse shape seems to have a directionality. …

    宮城教育大学紀要 = Bulletin of Miyagi University of Education (52), 139-147, 2018-01-31

    IR 

  • Development of CANDLES Low Background HPGe Detector and Half-life Measurement of 180Tam

    Chan W.M. , Kishimoto T. , Umehara S. , Matsuoka K. , Suzuki K. , Yoshida S. , Nakajima K. , Iida T. , Fushimi Ken-Ichi , Nomachi M. , Ogawa I. , Tamagawa Y. , Hazama Ryuta , Takemoto Y. , Nakatani N. , Takihira Y. , Tozawa M. , Kakubata H. , Trang V.T.T. , Ohata T. , Tetsuno K. , Maeda T. , Khai B.T. , Li X.L. , Batpurev T.

    … A new pulse shape discrimination (PSD) method was specially created for coaxial Ge detector. …

    AIP Conference Proceedings 1921(1), 030004, 2018-01-03

    IR 

  • Neutron Detection Efficiency of the BC501A Liquid Scintillation Detector  [in Japanese]

    苅谷 航太 , 川畑 貴裕 , 越川 亜美 , 阪上 朱音

    … The background gamma rays were eliminated by the pulse-shape discrimination technique. …

    ELCAS Journal (2), 39-42, 2017-03

    IR 

  • Study of <sup>180m</sup>Ta Decay by Ultra-low Background HPGe Detector  [in Japanese]

    Chan Wei Min , Kishimoto Tadafumi , Umehara Saori , Matsuoka Kenji , Yoshida Sei , others for the CANDLES Collaboration

    … To optimize detection efficiency and achieve ultra-low background level, Monte Carlo simulation and pulse shape discrimination method were also developed for the coaxial Ge detector. …

    Meeting Abstracts of the Physical Society of Japan 72.1(0), 404-404, 2017

    J-STAGE 

  • Improvement of pulse shape discrimination of the organic plastic scintillator NiGIRI  [in Japanese]

    Nagamine Shunsuke , Nishimura Shunji , Phong Vi Ho , Sakurai Hiroyoshi

    <p>高密度下での粒子の崩壊片の放出角度の測定に際して、NiGIRI検出器の開発を行った。この検出器は粒子ごとに減衰時定数の異なる有機シンチレーターを用いており、波形による粒子の特定ができる。この検出器によるγ線と中性子線の弁別能力のエネルギー依存性や電圧依存性を調べ、また、異なる波形解析手法による弁別能力を比較し、解析アルゴリズムの最適化による粒子弁別能力の向上について報告する。&l …

    Meeting Abstracts of the Physical Society of Japan 72.1(0), 408-408, 2017

    J-STAGE 

  • 19pAA-12 Pulse Shape Discrimination for Background Reduction in Underground HPGe Detector

    Chan Wei Min , Kishimoto T. , Umehara S. , Matsuoka K. , Yoshida S.

    Meeting Abstracts of the Physical Society of Japan 71.1(0), 293, 2016

    J-STAGE 

  • 21aCA-3 Study of double beta decay with CANDLES(98) : Pulse Shape Discrimination after updated detector  [in Japanese]

    Ohata T. , the CANDLES Collaboration

    Meeting Abstracts of the Physical Society of Japan 70.1(0), 226, 2015

    J-STAGE 

  • Scintillation properties of composite ceramic YAG and its capability on pulse shape descrimination  [in Japanese]

    YANAGIDA Takayuki , WATANABE Kenichi , FUJIMOTO Yutaka , URITANI Akira , YAGI Hideki , YANAGITANI Takagimi

    … Transparent ceramic composite of non-doped and Ce-doped YAG was prepared by Konoshima Chemical with the vacuum sintering technique and investigated on pulse shape discrimination capability for functional collimator. … Pulse shape discrimination capability of the composite ceramic was evaluated by <sup>137</sup>Cs 662 keV γ-ray irradiation. …

    Journal of the Ceramic Society of Japan 122(1432), 1016-1019, 2014

    J-STAGE 

  • An improvement of generalization ability of respitation rate classification using plethysmogram data  [in Japanese]

    Sakoda Akira , Ohtake Hiroshi , Tanaka Kazuo

    本研究ではシステムの操作制御に用いる生体信号として指先の脈波に注目する.脈波は呼吸の仕方によってわずかに変化することが知られている.様々なパターンの呼吸を行い,その時の脈波の違いをとらえることによって,入力インタフェースとして利用できると考えられる.しかし,脈波データは計測日毎に波形の振幅や形状が異なるため,安定した判別が難しいという問題がある.本研究では,サポート・ベクター・マシン(SVM)を用 …

    Proceedings of the Fuzzy System Symposium 29(0), 124-124, 2013

    J-STAGE 

  • Dependence of the scintillation characteristics on a dopant for LiCaAlF6 scintillator  [in Japanese]

    Kondo Yoshiyuki , Yamazaki Atsushi , Watanabe Kenichi , Uritani Akira , Iguchi Tetsuo , Yanagida Takayuki , Fujimoto Yutaka , Yoshikawa Akira

    新しい中性子検出媒体として中性子吸収断面積の大きい6Liを含むLiCaAlF6(LiCAF)シンチレータの開発が進められている。今回はLiCAFシンチレータの発光特性をより詳細に調べ、添加物の種類・濃度に対する依存性を調べた。 

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan 2012f(0), 87, 2012

    J-STAGE 

  • Neutron/Gamma-ray Discrimination Using LiCaALF6 neutron scintillator  [in Japanese]

    Watanabe Kenichi , Kamada Kei , Fukuda Kentaro , Suyama Toshihisa , Yoshikawa Akira , Kondo Yoshiyuki , Yamazaki Atsushi , Uritani Akira , Iguchi Tetsuo , Yanagida Takayuki , Kawaguchi Noriaki , Fujimoto Yutaka , Yokota Yuui

    新しい中性子検出器媒体として開発が進められている6Li を含むCe: LiCaAlF6(LiCAF)シンチレータについて、ガンマ線および中性子に対する発光特性の違いを利用した波形処理による中性子/ガンマ線弁別法に関する検討を行った。

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan 2011s(0), 84-84, 2011

    J-STAGE 

  • Gamma-ray measurement in high energy neutron field  [in Japanese]

    KAMADA So , TAKADA Masashi

    中性子・ガンマ線混在場において,ガンマ線計測に用いられている有機液体シンチレータよりもエネルギー決定精度が優れているNaI(Tl)シンチレータを用いて,ガンマ線エネルギースペクトル測定を行った.中性子とガンマ線の弁別には飛行時間の差を利用した.

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan 2011s(0), 59-59, 2011

    J-STAGE 

  • Measurement of gamma rays in the high energy neutron field by using pulse shape discrimination  [in Japanese]

    KAMADA So , TAKADA Masashi

    緊急被ばく医療においては、患者の被ばく線量評価が重要である。原子炉での被ばく事故はもとより高エネルギー加速器施設での被ばく事故での線量評価手法の開発が喫緊の課題である。特に、中性子とガンマ線の混在場においてガンマ線の線量評価手法は現在も定まっていない。波形弁別法は、有機液体シンチレータを用いた測定で中性子とガンマ線の弁別に有効であった。有機液体シンチレータではガンマ線のエネルギー決定精度が悪いのが …

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan 2011f(0), 71-71, 2011

    J-STAGE 

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