2017 Fiscal Year Annual Research Report
Development of a dedicated real-time analysis system for the new Solar neutron telescope
Project/Area Number |
26400297
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Research Institution | Chubu University |
Principal Investigator |
柴田 祥一 中部大学, 工学部, 教授 (20267909)
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Project Period (FY) |
2014-04-01 – 2018-03-31
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Keywords | 太陽中性子 / 太陽フレア / 宇宙線 / 粒子加速 / 太陽中性子望遠鏡 / 宇宙天気予報 / 多方向ミューオン望遠鏡 / メキシコ |
Outline of Annual Research Achievements |
本研究の最終目的は,宇宙線の加速のメカニズムを解明することである。そのために,地球に一番近い恒星である太陽表面において起きる,磁場エネルギーの解放である太陽フレアに伴う粒子加速現象を,太陽地球間の磁場に邪魔されることなく直進してくる中性子によって捕らえようというものである。 この目的のために,メキシコのシェラネグラ山(4,600 m)山頂に設置された新型太陽中性子望遠鏡(SciCRT)は,本来は,加速器のニュートリノ振動検出実験に使用されていたものであるが,一旦解体されて移設され,現在では,中心の8層の中性子検出部のうち3層と,それらの上下2層のミューオン検出兼荷電粒子Veto部が,太陽中性子の連続観測装置として稼働している。 本装置は,もともと,ニュートリノ現象という頻度の比較的低い現象を捕らえるために設計されたもので,高山という環境での,高頻度の宇宙線観測では,多くのバックグラウンドの現象に邪魔され,不感時間の割合が多くなってしまう。そこで,本研究では,SciCRTのデータの実時間解析システムを実現するために,まず,「不感時間の減少」という根本的な問題の克服を目指して,データ取得回路の高速化を進め,昨年度までに,Open-Itプロジェクトの枠組みで,KEK測定器開発室と協力しながら,SiTCPを用いた,データの分散読み出しが可能な高速データ収集用バックエンドボード(BEB)のバージョン1.0とバージョン2.0を開発し,中性子部の1層とミューオン検出兼荷電粒子Veto部に実装し,20倍の読み出し速度を実現した。また,中性子部の3層目に新トリガー回路を導入した。 これまでの取得データと計算機シミュレーションにより,太陽中性子の生成時のエネルギースペクトルの巾は±1の精度で決定できることや,85%のバックグラウンド中性子を残し,ガンマ線の96%を除去できることがわかった。
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Research Products
(33 results)
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[Journal Article] Diffusion of cosmic rays in heliosphere, observations from GRAPES-32017
Author(s)
K.P. Arunbabu, S.R. Dugad, S.K. Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, S. Kawakami, H. Kojima, P.K. Mohanty, S.D. Morris, P.K. Nayak, A. Oshima, B.S. Rao, S. Shibata, P. Subramanian
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:011
Pages: ID:011 1-4
Open Access / Int'l Joint Research
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[Journal Article] Current status of SciCRT experiment and its expected future performance2017
Author(s)
M.Anzorena, J.F.Valdes-Galicia, R.Garcia, Y.Matsubara, Y.Sasai, T.Kawabata, E.Ortiz, L.X.Gonzalez, O.Musalem, A.Hurtado, M.Barrantes, R.Taylor, Y.Itow, T.Sako, A.Tsuchiya, K.Munakata, C.Kato, Y.Nakamura, T.Oshima, T.Koike, S.Shibata, A.Oshima, H.Takamaru, H.Kojima, H.Tsuchiya, K.Watanabe, M.Kozai, T.Koi
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:051
Pages: ID:051 1-4
Open Access / Int'l Joint Research
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[Journal Article] Development of a pattern recognition algorithm for particle identification on the SciCRT in the Sierra Negra Volcano Summit2017
Author(s)
R.Garcia, J.F.Valdes-Galicia, M.Anzorena, E.Ortiz, L.X.Gonzalez, O.Musalem, A.Hurtado, M.Barrantes, R.Taylor, Y.Matsubara, Y.Sasai, Y.Itow, T.Sako, T.Kawabata, A.Tsuchiya, K.Munakata, C.Kato, Y.Nakamura, T.Oshima, T.Koike, S.Shibata, A.Oshima, H.Takamaru, H.Kojima, H.Tsuchiya, K.Watanabe, M.Kozai, T.Koi
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:052
Pages: ID:052 1-4
Open Access / Int'l Joint Research
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[Journal Article] Development of faster front end electronics for the SciCRT detector at Sierra Negra, Mexico2017
Author(s)
M.Anzorena, J.F.Valdes-Galicia, R.Garcia, Y.Matsubara, Y.Sasai, T.Kawabata, E.Ortiz, L.X.Gonzalez, O.Musalem, A.Hurtado, M.Barrantes, R.Taylor, Y.Itow, T.Sako, A.Tsuchiya, K.Munakata, C.Kato, Y.Nakamura, T.Oshima, T.Koike, S.Shibata, A.Oshima, H.Takamaru, H.Kojima, H.Tsuchiya, K.Watanabe, M.Kozai, T.Koi
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:053
Pages: ID:053 1-4
Open Access / Int'l Joint Research
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[Journal Article] Transient weakening of geomagnetic shield probed by GRAPES-3 experiment2017
Author(s)
P.K. Mohanty, K.P. Arunbabu, S.R. Dugad, S.K. Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, S. Kawakami, H. Kojima, S.D. Morris, A. Oshima, B.S. Rao, S. Shibata, P. Subramanian
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:092
Pages: ID:092 1-4
Open Access / Int'l Joint Research
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[Journal Article] Sensitivity of the SciBar Cosmic Ray Telescope (SciCRT) to solar neutrons2017
Author(s)
Y.Sasai, Y.Matsubara, Y.Itow, T.Sako, T.Kawabata, A.Tsuchiya, K.Munakata, C.Kato, Y.Nakamura, T.Oshima, T.Koike, S.Shibata, A.Oshima, H.Takamaru, H.Kojima, H.Tsuchiya, K.Watanabe, M.Kozai, T.Koi, J.F.Valdes-Galicia, E.Ortiz, O.Musalem, A.Hurtado, R.Garcia, M.Anzorena, M.Barrantes, R.Taylor, L.X.Gonzalez
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:101
Pages: ID:101 1-4
Open Access / Int'l Joint Research
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[Journal Article] Proton Acceleration by Very Impulsive Flare on June 3, 20122017
Author(s)
K. Kamiya, K. Koga, S. Masuda, H. Matsumoto, Y. Muraki, T. Obara, O. Okudaira, Y. Tanaka, S. Shibata, T. Goka
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:115
Pages: ID:115 1-4
Open Access
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[Journal Article] Analysis of Solar Gamma Rays and Solae Neutrons detected on March 7th and September 25th of 2011 by Ground Level Neutron Telescopes,SEDA-FIB and FERMI-LAT2017
Author(s)
Y. Muraki, J.F. Valdes-Galicia, L.X. Gonzalez, K. Kamiya, Y. Katayose, K. Koga, H. Matsumoto, S. Masuda, Y. Matsubara, Y. Nagai, M. Ohnishi, S. Ozawa, T. Sako, S. Shibata, M. Takita, Y. Tanaka, H. Tsuchiya, K. Watanabe, J. L. Zhang
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:136
Pages: ID:136 1-4
Open Access / Int'l Joint Research
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[Journal Article] Dependence of the GRAPES-3 EAS particle density and trigger rate on atmospheric pressure and temperature2017
Author(s)
M. Zuberi, S. Ahmad, K.P. Arunbabu, A. Chandra, S.R. Dugad, S.K. Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, V.B. Jhansi, S. Kawakami, H. Kojima, P.K. Mohanty, S.D. Morris, P.K. Nayak, A. Oshima, B.S. Rao, L.V. Reddy, S. Shibata
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:302
Pages: ID:302 1-4
Open Access / Int'l Joint Research
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[Journal Article] Atmospheric temperature dependence of muon intensity measured by the GRAPES-3 experiment2017
Author(s)
K. P. Arunbabu, S. Ahmad, A. Chandra, S.R. Dugad, S.K. Gupta B. Hariharan Y. Hayashi, P. Jagadeesan, A. Jain, V.B. Jhansi, S. Kawakami, H. Kojima, P.K. Mohanty , S.D. Morris, P.K. Nayak, A. Oshima, B.S. Rao, L.V. Reddy, S. Shibata, K. Tanaka, M. Zuberi
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:304
Pages: ID:304 1-4
Open Access / Int'l Joint Research
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[Journal Article] Precision measurement of arrival times in an EAS by GRAPES-3 experiment2017
Author(s)
V.B. Jhansi, S. Ahmad, K.P. Arunbabu, A. Chandra, S.R. Dugad, S.K. Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, S. Kawakami, H. Kojima, P.K. Mohanty, S.D. Morris, P.K.Nayak, A. Oshima, B.S. Rao, L.V. Reddy, S. Shibata, M.Zuberi
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:354
Pages: ID:354 1-4
Open Access / Int'l Joint Research
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[Journal Article] Measuring the hourly gain of the scintillator detectors from EAS data2017
Author(s)
V.B. Jhansi, S. Ahmad, K.P. Arunbabu, A. Chandra, S.R. Dugad, S.K. Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, S. Kawakami, H. Kojima, P.K. Mohanty, S.D. Morris, P.K.Nayak, A. Oshima, B.S. Rao, L.V. Reddy, S. Shibata, M.Zuberi
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:356
Pages: ID:356 1-4
Open Access / Int'l Joint Research
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[Journal Article] Long-term correction of GRAPES-3 muon telescope efficiency2017
Author(s)
P.K. Mohanty, S. Ahmad, K.P. Arunbabu, A. Chandra, S.R. Dugad, S.K. Gupta, B. Hariharan, Y. Hayashi, P. Jagadeesan, A. Jain, V.B. Jhansi, S. Kawakami, H. Kojima, S.D. Morris, P.K. Nayak, A. Oshima, B.S. Rao, L.V. Reddy, S. Shibata, P. Subramanian, M. Zuberi
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:357
Pages: ID:357 1-4
Open Access / Int'l Joint Research
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[Journal Article] ALPAQUITA Array in the ALPACA Project2017
Author(s)
T.Asaba, K.Hibino, N.Hotta, M.Kataoka, Y.Katayose, C.Kato, K.Kawata, H.Kojima, K.Munakata, Y.Nakamura, M.Nishizawa, S.Ogio, M.Ohnishi, A.Oshima, T.Saito, T.K.Sako, T.Sasaki, S.Shibata, A.Shiomi, M.Subieta, M.Suzuki, N.Tajima, M.Takita, Y.Tameda, K.Tanaka, H.Tsuchiya, Y.Tsunesada, S.Udo, M.Wakamatsu et al.
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:437
Pages: ID:437 1-4
Open Access / Int'l Joint Research
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[Journal Article] Extending the range of particle densities observed by GRAPES-32017
Author(s)
A. Chandra, S. Ahmad, K.P. Arunbabu, S.R. Dugad, S.K. Gupta, B. HariHaran, Y. Hayashi, P. Jagadeesan, A. Jain, V.B. Jhansi, S. Kawakami, H. Kojima, P.K. Mohanty, S.D. Morris, P.K. Nayak, A. Oshima, B.S. Rao, L.V. Reddy, S. Shibata, M. Zuberi
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:479
Pages: ID:479 1-4
Open Access / Int'l Joint Research
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[Journal Article] The overview of the ALPACA Experiment2017
Author(s)
T.Asaba, K.Hibino, N.Hotta, M.Kataoka, Y.Katayose, C.Kato, K.Kawata, H.Kojima, K.Munakata, Y.Nakamura, M.Nishizawa, S.Ogio, M.Ohnishi, A.Oshima, T.Saito, T.K.Sako, T.Sasaki, S.Shibata, A.Shiomi, M.Subieta, M.Suzuki, N.Tajima, M.Takita, Y.Tameda, K.Tanaka, H.Tsuchiya, Y.Tsunesada, S.Udo, M.Wakamatsu et al.
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Journal Title
Proc. 35th Int. Cosmic Ray Conf.
Volume: ID:827
Pages: ID:827 1-4
Open Access / Int'l Joint Research
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