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Koji Ishidoshiro

Section

Research Center for Neutrino Science

Job title

Associate Professor

Degree

博士 (理学) (The University of Tokyo)

researchmap

https://researchmap.jp/7000002208

J-GLOBAL ID

201201005181180035

Research History 3

2020/01 - Present

Tohoku University　Research Center for Neutrino Science
2012/04 - 2019/12

Tohoku University　Research Center for Neutrino Science
2010/04 - 2012/03

高エネルギー加速器研究機構　研究員

Education 2

The University of Tokyo　Graduate School, Division of Science

2004/04 - 2010/03
University of Tsukuba　First Cluster of College　自然学類

2000/04 - 2004/03

Committee Memberships 8

部局内委員会　ニュートリノ科学研究センター運営委員

2020/04 - Present
日本物理学会　(宇宙線宇宙物理領域)領域運営委員

2016/10 - 2017/09
宇宙線研究者会議　実行委員

2024/04 - 2025/03
宇宙線研究者会議　実行委員

2022/04 - 2023/03
宇宙線研究者会議　総務

2019/04 - 2020/03
宇宙線研究者会議　書記

2018/04 - 2019/03
宇宙線宇宙物理領域　領域委員

2016/10 - 2018/09
日本物理学会　(宇宙線宇宙物理領域)領域運営委員

2016/10 - 2017/09

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Professional Memberships 2

日本天文学会
日本物理学会

Research Interests 4

超伝導検出器
暗黒物質
素粒子物理学
ニュートリノ

Research Areas 1

Natural sciences / Particle, nuclear, cosmic-ray, and astrophysics - experiment /

Awards 1

日本物理学会若手奨励賞

2012/03　日本物理学会

Papers 86

Search for the Majorana Nature of Neutrinos in the Inverted Mass Ordering Region with KamLAND-Zen Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, D. Chernyak, A. Kozlov, K. Z. Nakamura, S. Yoshida, Y. Takemoto, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, J. Smolsky, Z. Fu, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell’Oro, T. O’Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, A. Li, H. Song

Physical Review Letters　130　(5)　2023/01/30
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevlett.130.051801 　

ISSN： 0031-9007

eISSN： 1079-7114
Theoretical Prediction of Presupernova Neutrinos and Their Detection Peer-reviewed

C. Kato, K. Ishidoshiro, T. Yoshida

Annual Review of Nuclear and Particle Science　70　(1)　121-145　2020/10/19
Publisher: Annual Reviews
DOI： 10.1146/annurev-nucl-040620-021320 　

ISSN： 0163-8998

eISSN： 1545-4134

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More than 30 years have passed since the successful detection of supernova (SN) neutrinos from SN 1987A. In the last few decades, remarkable progress has been made in neutrino detection techniques, through which it may be possible to detect neutrinos from a new source, presupernova (pre-SN) neutrinos. They are emitted from a massive star prior to core bounce. Because neutrinos escape from the core freely, they carry information about the stellar physics directly. Pre-SN neutrinos may play an important role in verifying our understanding of stellar evolution for massive stars. Observation of pre-SN neutrinos, moreover, may serve as an alarm regarding an SN explosion a few days in advance if the progenitor is located in our vicinity, enabling us to observe the next galactic SN. In this review, we summarize the current status of pre-SN neutrino studies from both the theoretical and observational points of view.
KamLAND SENSITIVITY TO NEUTRINOS FROM PRE-SUPERNOVA STARS Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, A. Piepke, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, J. G. Learned, J. Maricic, S. Matsuno, M. Sakai, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

ASTROPHYSICAL JOURNAL　818　(1)　91　2016/02

DOI： 10.3847/0004-637X/818/1/91 　

ISSN： 0004-637X

eISSN： 1538-4357
Performance Evaluation of Kinetic Inductance Detector on Yttria-Stabilized Zirconia Substrates with Tuned Yttria Concentrations

Yuto Kamei, Ryota Ito, Tohru Taino, Koji Ishidoshiro, Satoru Mima, Yuto Nakajo, Taiga Omae, Chiko Otani

IEEE Transactions on Applied Superconductivity　1-5　2026
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI： 10.1109/tasc.2026.3667893 　

ISSN： 1051-8223

eISSN： 1558-2515 2378-7074
Limits on the Low-energy Electron Antineutrino Flux from the Brightest Gamma-Ray Burst of All Time Peer-reviewed

S. Abe, T. Araki, S. Chauhan, K. Chiba, T. Eda, M. Eizuka, Y. Funahashi, A. Furuto, A. Gando, Y. Gando, S. Goto, T. Hachiya, K. Hata, K. Ichimura, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, A. Marthe, Y. Matsumoto, T. Mitsui, H. Miyake, D. Morita, R. Nakajima, K. Nakamura, R. Nakamura, R. Nakamura, J. Nakane, T. Ono, H. Ozaki, K. Saito, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, K. Tachibana, K. Tamae, H. Watanabe, K. Watanabe, S. Kurosawa, Y. Urano, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, Z. Fu, S. Ghosh, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell’Oro, T. O’Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, K. M. Weerman, C. Grant, Ö. Penek, H. Song, A. Li, S. N. Axani, M. Garcia, M. Sarfraz

The Astrophysical Journal　981　(2)　192-192　2025/03/07
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ad9c36 　

ISSN： 0004-637X

eISSN： 1538-4357

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Abstract The electron antineutrino flux limits are presented for the brightest gamma-ray burst (GRB) of all time, GRB221009A, over a range of 1.8–200 MeV using the Kamioka Liquid Scintillator Antineutrino Detector. Using multiple time windows ranging from minutes to days surrounding the event to search for electron antineutrinos coincident with the GRB, we set an upper limit on the flux under the assumption of several power-law neutrino source spectra, with power-law indices ranging from 1.5 to 3 in steps of 0.5. No excess was observed in any time windows ranging from seconds to days around the event trigger time T ₀. For a power-law index of 2 and a time window of T ₀ ± 500 s, a flux upper limit of 2.34 × 10⁹ cm⁻² was calculated. The limits are compared to the results presented by IceCube.
Combined Pre-supernova Alert System with KamLAND and Super-Kamiokande Peer-reviewed

S. Abe, M. Eizuka, S. Futagi, A. Gando, Y. Gando, S. Goto, T. Hachiya, K. Hata, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, D. Morita, T. Nakahata, R. Nakajima, K. Nakamura, R. Nakamura, R. Nakamura, J. Nakane, H. Ozaki, K. Saito, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, R. Shoji, A. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, K. Watanabe, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell’Oro, T. O’Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, K. M. Weerman, C. Grant, H. Song, A. Li, S. N. Axani, M. Garcia, K. Abe, S. Abe, C. Bronner, Y. Hayato, K. Hiraide, K. Hosokawa, K. Ieki, M. Ikeda, J. Kameda, Y. Kanemura, R. Kaneshima, Y. Kashiwagi, Y. Kataoka, S. Miki, S. Mine, M. Miura, S. Moriyama, M. Nakahata, Y. Nakano, S. Nakayama, Y. Noguchi, K. Sato, H. Sekiya, H. Shiba, K. Shimizu, M. Shiozawa, Y. Sonoda, Y. Suzuki, A. Takeda, Y. Takemoto, H. Tanaka, T. Yano, S. Han, T. Kajita, K. Okumura, T. Tashiro, T. Tomiya, X. Wang, S. Yoshida, P. Fernandez, L. Labarga, N. Ospina, B. Zaldivar, B. W. Pointon, E. Kearns, J. L. Raaf, L. Wan, T. Wester, J. Bian, N. J. Griskevich, M. B. Smy, H. W. Sobel, V. Takhistov, A. Yankelevich, J. Hill, M. C. Jang, S. H. Lee, D. H. Moon, R. G. Park, B. Bodur, K. Scholberg, C. W. Walter, A. Beauchêne, O. Drapier, A. Giampaolo, Th. A. Mueller, A. D. Santos, P. Paganini, B. Quilain, R. Rogly, T. Nakamura, J. S. Jang, L. N. Machado, J. G. Learned, K. Choi, N. Iovine, S. Cao, L. H. V. Anthony, D. Martin, N. W. Prouse, M. Scott, Y. Uchida, V. Berardi, N. F. Calabria, M. G. Catanesi, E. Radicioni, A. Langella, G. De Rosa, G. Collazuol, M. Feltre, F. Iacob, M. Mattiazzi, L. Ludovici, M. Gonin, L. Périssé, G. Pronost, C. Fujisawa, S. Horiuchi, M. Kobayashi, Y. M. Liu, Y. Maekawa, Y. Nishimura, R. Okazaki, R. Akutsu, M. Friend, T. Hasegawa, T. Ishida, T. Kobayashi, M. Jakkapu, T. Matsubara, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. Portocarrero Yrey, N. Bhuiyan, G. T. Burton, F. Di Lodovico, J. Gao, A. Goldsack, T. Katori, J. Migenda, R. M. Ramsden, Z. Xie, S. Zsoldos, A. T. Suzuki, Y. Takagi, Y. Takeuchi, H. Zhong, J. Feng, L. Feng, J. R. Hu, Z. Hu, M. Kawaue, T. Kikawa, M. Mori, T. Nakaya, R. A. Wendell, K. Yasutome, S. J. Jenkins, N. McCauley, P. Mehta, A. Tarrant, M. J. Wilking, Y. Fukuda, Y. Itow, H. Menjo, K. Ninomiya, Y. Yoshioka, J. Lagoda, M. Mandal, P. Mijakowski, Y. S. Prabhu, J. Zalipska, M. Jia, J. Jiang, W. Shi, C. Yanagisawa, M. Harada, Y. Hino, H. Ishino, Y. Koshio, F. Nakanishi, S. Sakai, T. Tada, T. Tano, T. Ishizuka, G. Barr, D. Barrow, L. Cook, S. Samani, D. Wark, A. Holin, F. Nova, S. Jung, B. S. Yang, J. Y. Yang, J. Yoo, J. E. P. Fannon, L. Kneale, M. Malek, J. M. McElwee, M. D. Thiesse, L. F. Thompson, S. T. Wilson, H. Okazawa, S. M. Lakshmi, S. B. Kim, E. Kwon, J. W. Seo, I. Yu, A. K. Ichikawa, K. D. Nakamura, S. Tairafune, K. Nishijima, A. Eguchi, K. Nakagiri, Y. Nakajima, S. Shima, N. Taniuchi, E. Watanabe, M. Yokoyama, P. de Perio, S. Fujita, C. Jesús-Valls, K. Martens, K. M. Tsui, M. R. Vagins, J. Xia, S. Izumiyama, M. Kuze, R. Matsumoto, K. Terada, R. Asaka, M. Ishitsuka, H. Ito, Y. Ommura, N. Shigeta, M. Shinoki, K. Yamauchi, T. Yoshida, R. Gaur, V. Gousy-Leblanc, M. Hartz, A. Konaka, X. Li, S. Chen, B. D. Xu, A. Q. Zhang, B. Zhang, M. Posiadala-Zezula, S. B. Boyd, R. Edwards, D. Hadley, M. Nicholson, M. O’Flaherty, B. Richards, A. Ali, B. Jamieson, S. Amanai, Ll. Marti, A. Minamino, R. Shibayama, S. Suzuki

The Astrophysical Journal　973　(2)　140-140　2024/09/26
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ad5fee 　

ISSN： 0004-637X

eISSN： 1538-4357

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Abstract Preceding a core-collapse supernova (CCSN), various processes produce an increasing amount of neutrinos of all flavors characterized by mounting energies from the interior of massive stars. Among them, the electron antineutrinos are potentially detectable by terrestrial neutrino experiments such as KamLAND and Super-Kamiokande (SK) via inverse beta decay interactions. Once these pre-supernova (pre-SN) neutrinos are observed, an early warning of the upcoming CCSN can be provided. In light of this, KamLAND and SK, both located in the Kamioka mine in Japan, have been monitoring pre-SN neutrinos since 2015 and 2021, respectively. Recently, we performed a joint study between KamLAND and SK on pre-SN neutrino detection. A pre-SN alert system combining the KamLAND detector and the SK detector was developed and put into operation, which can provide a supernova alert to the astrophysics community. Fully leveraging the complementary properties of these two detectors, the combined alert is expected to resolve a pre-SN neutrino signal from a 15 M _⊙ star within 510 pc of the Earth at a significance level corresponding to a false alarm rate of no more than 1 per century. For a Betelgeuse-like model with optimistic parameters, it can provide early warnings up to 12 hr in advance.
Development of Kinetic Inductance Detector on ZrO$$_2$$ Substrate for Double-Beta Decay Search

Yuto Kamei, Koji Ishidoshiro, Ryota Ito, Tatsuya Kobayashi, Satoru Mima, Yuto Nakajo, Chiko Otani, Tohru Taino

Journal of Low Temperature Physics　2024/09/13
Publisher: Springer Science and Business Media LLC
DOI： 10.1007/s10909-024-03218-7 　

ISSN： 0022-2291

eISSN： 1573-7357
Search for charged excited states of dark matter with KamLAND-Zen Peer-reviewed

S. Abe, M. Eizuka, S. Futagi, A. Gando, Y. Gando, S. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, D. Morita, T. Nakahata, R. Nakajima, K. Nakamura, R. Nakamura, J. Nakane, H. Ozaki, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, R. Shoji, A. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, K. Watanabe, S. Obara, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, A. Ichikawa, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell'Oro, T. O'Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, K. M. Weerman, C. Grant, A. Li, H. Song

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics　855　2024/08

DOI： 10.1016/j.physletb.2024.138846 　

ISSN： 0370-2693
RFSoC-based front-end electronics for pulse detection Peer-reviewed

S.N. Axani, S. Futagi, M. Garcia, C. Grant, K. Hosokawa, S. Ieki, K. Inoue, K. Ishidoshiro, N. Kawada, Y. Matsumoto, T. Nakahata, K. Nakamura, R. Shouji, H. Song, L.A. Winslow

Journal of Instrumentation　19　(03)　P03013-P03013　2024/03/01
Publisher: IOP Publishing
DOI： 10.1088/1748-0221/19/03/p03013 　

eISSN： 1748-0221

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Abstract Radiation measurement relies on pulse detection, which can be performed using various configurations of high-speed analog-to-digital converters (ADCs) and field-programmable gate arrays (FPGAs). For optimal power consumption, design simplicity, system flexibility, and the availability of DSP slices, we consider the Radio Frequency System-on-Chip (RFSoC) to be a more suitable option than traditional setups. To this end, we have developed custom RFSoC-based electronics and verified its feasibility. The ADCs on RFSoC exhibit a flat frequency response of 1–125 MHz. The root-mean-square (RMS) noise level is 2.1 ADC without any digital signal processing. The digital signal processing improves the RMS noise level to 0.8 ADC (input equivalent 40 μV_rms). Baseline correction via digital signal processing can effectively prevent photomultiplier overshoot after a large pulse. Crosstalk between all channels is less than -55 dB. The measured data transfer speed can support up to 32 kHz trigger rates (corresponding to 750 Mbps). Overall, our RFSoC-based electronics are highly suitable for pulse detection, and after some modifications, they will be employed in the Kamioka Liquid Scintillator Anti-Neutrino Detector (KamLAND).
Application of gamma Transition-Edge-Sensor (TES) to 112Sn two-neutrino double electron capture search

Koichi Ichimura, Koji Ishidoshiro, Azusa Gando, Kaori Hattori, Takahiro Kikuchi, Hirotake Yamamori, Shinya Yamada, Tadafumi Kishimoto

Proceedings of XVIII International Conference on Topics in Astroparticle and Underground Physics — PoS(TAUP2023)　2024/01/15
Publisher: Sissa Medialab
DOI： 10.22323/1.441.0267 　
Kinetic inductance detectors on calcium fluoride substrate for astroparticle physics Peer-reviewed

K. Ishidoshiro, T. Kobayashi, K. Hosokawa, Y. Kawamura, Y. Kamei, S. Mima, C. Otani, A. A. Suzuki, M. Zulfakri, T. Taino

Progress of Theoretical and Experimental Physics　2023　(10)　2023/10/01

DOI： 10.1093/ptep/ptad124 　

eISSN： 2050-3911
Measurement of cosmic-ray muon spallation products in a xenon-loaded liquid scintillator with KamLAND Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Dell'Oro, T. O'Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, K. M. Weerman, C. Grant, A. Li, H. Song

Physical Review C　107　(5)　2023/05/22
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevc.107.054612 　

ISSN： 2469-9985

eISSN： 2469-9993
First measurement of the strange axial coupling constant using neutral-current quasielastic interactions of atmospheric neutrinos at KamLAND Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, A. Li, H. Song, S. Dell’Oro, T. O’Donnell

Physical Review D　107　(7)　2023/04/19
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevd.107.072006 　

ISSN： 2470-0010

eISSN： 2470-0029
A study of self-vetoing balloon vessel for liquid-scintillator detectors

S. Obara, Y. Gando, S. Ieki, H. Ikeda, K. Ishidoshiro, R. Nakamura

Journal of Physics: Conference Series　2374　(1)　012111-012111　2022/11/01
Publisher: IOP Publishing
DOI： 10.1088/1742-6596/2374/1/012111 　

ISSN： 1742-6588

eISSN： 1742-6596

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KamLAND-Zen searches for neutrinoless double-beta decay with an ultra-pure liquid-scintillator (LS) filled with a custom-made clean nylon balloon. The primary backgrounds are radioactive impurities such as uranium and thorium series. To reduce them, we studied a self-vetoing balloon-shaped vessel for a future upgrade program, “KamLAND2-Zen”. We selected Polyethylene-Naphthalate (PEN) film which emit fluorescent light and performed the feasibility studies. Owing to its scintillation properties, ²¹⁴Bi background could be identified in the KamLAND2-Zen. Moreover, thanks to the different waveforms between the LS and the PEN, we can apply the pulse-shape-discrimination for ²¹²Bi-Po pileup background. We evaluated its background rejection efficiency as more than 90%. Resulting from these studies, it is possible to remove restrictions on fiducial volume in KamLAND2-Zen.
Progress of Kinetic Inductance Detectors on Calcium Fluoride for Astroparticle physics

Zulfakri Mohamad, Koji Ishidoshiro, Yasuhiro Kishimoto, Satoru Mima, Tohru Taino, Keishi Hosokawa, Kosuke Nakamura, Minori Eizuka, Ryota Ito, Hiroki Kawamura

Journal of Physics: Conference Series　2374　(1)　012026-012026　2022/11/01
Publisher: IOP Publishing
DOI： 10.1088/1742-6596/2374/1/012026 　

ISSN： 1742-6588

eISSN： 1742-6596

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Kinetic Inductance Detector (KID) is an exciting device that promises high sensitivity to photons from submillimeter waves to gamma-rays with large format arrays. The KID consists of a superconductor thin film microwave resonator combined with a transmission line. When energy accumulates, Cooper pairs in the superconductor films are broken. Then quasiparticles are produced. This change increases the kinetic inductance in the resonant circuits and can be monitored by the transmission line. We propose that Lumped Element KID (LEKID) is implemented on Calcium Fluoride (CaF2) substrate for next-generation astroparticle experiments. 48Ca is one of the double-beta decay nuclei, and 19F is sensitive to spin-dependent elastic scattering with dark matter. The LEKID on CaF₂ can be cooled to 15mK using a dilution refrigerator. At this stage, the quality factors of the LEKID are about 500×10³, and measurement for particle detection using 241Am particle irradiation is also demonstrated at this low temperature.
Concept of KamLAND2 DAQ system

S. Ieki, S. Asami, S. Axani, S. Futagi, K. Hosokawa, K. Ishidoshiro, T. Nakahata, K. Nakamura

Journal of Physics: Conference Series　2374　(1)　012104-012104　2022/11/01
Publisher: IOP Publishing
DOI： 10.1088/1742-6596/2374/1/012104 　

ISSN： 1742-6588

eISSN： 1742-6596

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The KamLAND-Zen experiment is searching for neutrinoless double-beta decay of ¹³⁶Xe. We are preparing for the upgrade of the KamLAND detector, KamLAND2. It is designed to improve the discrimination power of two-neutrino double-beta decay and cosmic-ray muon spallation backgrounds. Data acquisition of all neutrino events from nearby supernova is also an important issue of the KamLAND2 experiment and the data rate is a key factor to design a new DAQ system. High speed sampling will be realized with RFSoC on the front-end electronics. Data is read out from FEE to DAQ computers via 10 GbE, and FairMQ is one of the candidates for KamLAND2 DAQ software. In the KamLAND DAQ, the whole trigger system is implemented in hardware, while the KamLAND2 DAQ adopts hardware trigger for photon detection and software trigger to extract physics events. A simulation study of the software trigger is proceeding in order to detect low energy events using timing and charge information.
KamLAND’s search for correlated low-energy electron antineutrinos with astrophysical neutrinos from IceCube Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A.K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B.E. Berger, B.K. Fujikawa, J.G. Learned, J. Maricic, S.N. Axani, J. Smolsky, J. Lertprasertpong, L.A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H.J. Karwowski, D.M. Markoff, W. Tornow, A. Li, J.A. Detwiler, S. Enomoto, M.P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

Astroparticle Physics　143　102758-102758　2022/10
Publisher: Elsevier BV
DOI： 10.1016/j.astropartphys.2022.102758 　

ISSN： 0927-6505
Abundances of Uranium and Thorium Elements in Earth Estimated by Geoneutrino Spectroscopy Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, Y. Shirahata, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

Geophysical Research Letters　49　(16)　2022/08/28
Publisher: American Geophysical Union (AGU)
DOI： 10.1029/2022gl099566 　

ISSN： 0094-8276

eISSN： 1944-8007
Search for Supernova Neutrinos and Constraint on the Galactic Star Formation Rate with the KamLAND Data Peer-reviewed

S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, N. Maemura, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Smolsky, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　934　(1)　85-85　2022/07/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ac7a3f 　

ISSN： 0004-637X

eISSN： 1538-4357
A Search for Correlated Low-energy Electron Antineutrinos in KamLAND with Gamma-Ray Bursts Peer-reviewed

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, M. Eizuka, M. Kurasawa, T. Nakahata, S. Futagi, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, J. Smolsky, C. Laber-Smith, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, H. Song, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　927　(1)　69-69　2022/03/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ac4e7e 　

ISSN： 0004-637X

eISSN： 1538-4357
Limits on Astrophysical Antineutrinos with the KamLAND Experiment Peer-reviewed

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, Y. Shirahata, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, A. Kozlov, D. Chernyak, Y. Takemoto, S. Yoshida, S. Umehara, K. Fushimi, S. Hirata, K. Z. Nakamura, M. Yoshida, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　925　(1)　14-14　2022/01/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ac32c1 　

ISSN： 0004-637X

eISSN： 1538-4357
Search for Solar Flare Neutrinos with the KamLAND Detector Peer-reviewed

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, A. Kozlov, D. Chernyak, Y. Takemoto, S. Yoshida, S. Umehara, K. Fushimi, K. Z. Nakamura, M. Yoshida, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　924　(2)　103-103　2022/01/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ac35d1 　

ISSN： 0004-637X

eISSN： 1538-4357
Supernova Neutrino Burst Search at KamLAND

M Eizuka, K Ishidoshiro, S Obara

Journal of Physics: Conference Series　2156　(1)　012195-012195　2021/12/01
Publisher: IOP Publishing
DOI： 10.1088/1742-6596/2156/1/012195 　

ISSN： 1742-6588

eISSN： 1742-6596

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<title>Abstract</title> We report a result of supernova neutrino burst search at KamLAND in a neutrino energy range of 1.8–111 MeV via the inverse-beta decay (IBD). The search was performed using data from 2002 March 9th to 2020 July 17th, and the corresponding livetime is 5001.21 days. We searched for two or more sequential IBD events within 10 s as a supernova neutrino burst candidate. The dominant background is the accidental cluster of 2 or more IBD events caused by neutrinos from other sources, though, which are estimated to be almost negligible. We evaluated detectable ranges for some emitted supernova neutrino burst models. The conservative detectable ranges are 38kpc for core-collapse supernova (ccSN) and 42kpc for failed ccSN. We found no significant supernova neutrino burst events and set a 90% upper limit on the supernova neutrino detection rate in KamLAND as 0.178 burst/yr.
Search for Supernova Relic Neutrinos at KamLAND

S Obara, S Ieki, K Ishidoshiro, T Mitsui, H Watanabe, M P Decowski

Journal of Physics: Conference Series　2156　(1)　012138-012138　2021/12/01
Publisher: IOP Publishing
DOI： 10.1088/1742-6596/2156/1/012138 　

ISSN： 1742-6588

eISSN： 1742-6596

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<title>Abstract</title> We report a search for electron antineutrinos at KamLAND with an 8.3−30.8 MeV energy range via the inverse beta decay. In 6.72 kton-yr of KamLAND data, we found 18 neutrino candidates and no significant excess over estimated backgrounds. From data interpretation, with the assumption of some supernova relic neutrino spectrum predictions, we give upper flux limits of 60−110 cm⁻² s⁻¹ (90% CL) in the analysis range and present a model-independent flux. These upper limits are the most stringent for 8−13 MeV region. We also improve on the upper probability limit of ⁸B solar neutrinos converting into antineutrinos via the Resonant Spin Flavor Precession with the neutrino magnetic moment. Besides, we could set limits on the annihilation cross-section for light dark matter pairs to neutrino pairs.
The nylon balloon for xenon loaded liquid scintillator in KamLAND-Zen 800 neutrinoless double-beta decay search experiment Peer-reviewed

Y. Gando, A. Gando, T. Hachiya, S. Hayashida, K. Hosokawa, H. Ikeda, T. Mitsui, T. Nakada, S. Obara, H. Ozaki, J. Shirai, K. Ueshima, H. Watanabe, S. Abe, K. Hata, A. Hayashi, Y. Honda, S. Ieki, K. Inoue, K. Ishidoshiro, S. Ishikawa, Y. Kamei, K. Kamizawa, Y. Karino, N. Kawada, T. Kinoshita, M. Koga, S. Matsuda, H. Miyake, K. Nakamura, K. Nemoto, A. Ono, N. Ota, S. Otsuka, Y. Shibukawa, I. Shimizu, Y. Shirahata, K. Soma, A. Suzuki, A.A. Suzuki, T. Takai, A. Takeuchi, K. Tamae, Y. Teraoka, Y. Wada, D. Chernyak, A. Kozlov, S. Yoshida, S. Umehara, Y. Takemoto, K. Fushimi, S. Hirata, C. Grant, A. Li, J.G. Learned, J. Maricic, B.E. Berger, B.K. Fujikawa, S. Fraker, A. Herman, E. Krupczak, G.L. Pease, L.A. Winslow, Y. Efremenko, H.J. Karwowski, D.M. Markoff, W. Tornow, T. O'Donnell, S. Dell'Oro, J.A. Detwiler, S. Enomoto, M.P. Decowski

Journal of Instrumentation　16　(08)　P08023-P08023　2021/08/01
Publisher: IOP Publishing
DOI： 10.1088/1748-0221/16/08/p08023 　

eISSN： 1748-0221
Low-energy astrophysics with KamLAND Peer-reviewed

Nanami Kawada, Shuhei Obara, Koji Ishidoshiro, Seisho Abe, Sachihiro Asami, Azusa Gando, Yoshihito Gando, Tomomi Gima, Anna Goto, Takahiko Hachiya, Kazumi Hata, Shingo Hayashida, Keishi Hosokawa, Koichi Ichimura, Sei Ieki, Haruo Ikeda, Kunio Inoue, Yuto Kamei, Yasuhiro Kishimoto, Tatsuya Kinoshita, Masayuki Koga, Naoya Maemura, Tadao Mitsui, Haruhiko Miyake, Kengo Nakamura, Kosuke Nakamura, Rikuo Nakamura, Hideyoshi Ozaki, Taichi Sakai, Hiroto Sambonsugi, Itaru Shimizu, Junpei Shirai, Kensuke Shiraishi, Atsuto SUZUKI, Yuya Suzuki, Atsuto Takeuchi, Kyoko Tamae, Kota Ueshima, Yoshiki Wada, Hiroko Watanabe, Yuki Yoshida, Atsuko Ichikawa, Alexandre Kozlov, Dmitry CHERNYAK, Yasuhiro Takemoto, Sei Yoshida, Saori Umehara, Ken-Ichi Fushimi, Kazuhiro Nakamura, Masashi Yoshida, Bruce Edmond Berger, Brian Kurt Fujikawa, John Gregory Learned, Jelena Maricic, Spencer N. Axani, Lindley Anne Winslow, Zhenghao Fu, Jonathan Ouellet, Yuri Efremenko, Hugon J. Karwowski, Dian M. Markoff, Werner Tornow, Aobo Li, Jason A. Detwiler, Sanshiro Enomoto, Patric Decowski, Chistopher Grant, Thomas O'Donnell, Stefano Dell'Oro

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)　2021/07/29
Publisher: Sissa Medialab
DOI： 10.22323/1.395.1163 　
SNEWS 2.0: a next-generation supernova early warning system for multi-messenger astronomy Peer-reviewed

S Al Kharusi, S Y BenZvi, J S Bobowski, W Bonivento, V Brdar, T Brunner, E Caden, M Clark, A Coleiro, M Colomer-Molla, J I Crespo-Anadón, A Depoian, D Dornic, V Fischer, D Franco, W Fulgione, A Gallo Rosso, M Geske, S Griswold, M Gromov, D Haggard, A Habig, O Halim, A Higuera, R Hill, S Horiuchi, K Ishidoshiro, C Kato, E Katsavounidis, D Khaitan, J P Kneller, A Kopec, V Kulikovskiy, M Lai, M Lamoureux, R F Lang, H L Li, M Lincetto, C Lunardini, J Migenda, D Milisavljevic, M E McCarthy, E O Connor, E O Sullivan, G Pagliaroli, D Patel, R Peres, B W Pointon, J Qin, N Raj, A Renshaw, A Roeth, J Rumleskie, K Scholberg, A Sheshukov, T Sonley, M Strait, V Takhistov, I Tamborra, J Tseng, C D Tunnell, J Vasel, C F Vigorito, B Viren, C J Virtue, J S Wang, L J Wen, L Winslow, F L H Wolfs, X J Xu, Y Xu

New Journal of Physics　23　(3)　031201-031201　2021/03/01
Publisher: IOP Publishing
DOI： 10.1088/1367-2630/abde33 　

eISSN： 1367-2630
Search for Low-energy Electron Antineutrinos in KamLAND Associated with Gravitational Wave Events Peer-reviewed

S. Abe, S. Asami, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, S. Hayashida, K. Hosokawa, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, T. Kinoshita, M. Koga, N. Maemura, T. Mitsui, H. Miyake, K. Nakamura, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, H. Sambonsugi, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, Y. Yoshida, S. Obara, A. Kozlov, D. Chernyak, Y. Takemoto, S. Yoshida, S. Umehara, K. Fushimi, A. K. Ichikawa, K. Z. Nakamura, M. Yoshida, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, L. A. Winslow, Z. Fu, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, A. Li, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, T. O’Donnell, S. Dell’Oro

The Astrophysical Journal　909　(2)　116-116　2021/03/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/abd5bc 　

ISSN： 0004-637X

eISSN： 1538-4357

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Abstract We present the results of a search for MeV-scale electron antineutrino events in KamLAND coincident with the 60 gravitational wave events/candidates reported by the LIGO/Virgo collaboration during their second and third observing runs. We find no significant coincident signals within a ±500 s timing window from each gravitational wave and present 90% C.L. upper limits on the electron antineutrino fluence between 10⁸ and 10¹³ cm⁻² for neutrino energies in the energy range of 1.8–111 MeV.
Supernova-scope for the direct search of Supernova axions Peer-reviewed

Shao-Feng Ge, Koichi Hamaguchi, Koichi Ichimura, Koji Ishidoshiro, Yoshiki Kanazawa, Yasuhiro Kishimoto, Natsumi Nagata, Jiaming Zheng

Journal of Cosmology and Astroparticle Physics　2020　(11)　059-059　2020/11/27
Publisher: IOP Publishing
DOI： 10.1088/1475-7516/2020/11/059 　

eISSN： 1475-7516
Pre-supernova neutrino emission from massive stars and their detection

Chinami Kato, Hiroki Nagakura, Shun Furusawa, Koh Takahashi, Hideyuki Umeda, Takashi Yoshida, Koji Ishidoshiro, Shoichi Yamada

Journal of Physics: Conference Series　1468　(1)　2020/03/20

DOI： 10.1088/1742-6596/1468/1/012173 　

ISSN： 1742-6588

eISSN： 1742-6596
Pulsational Pair-instability Supernovae. II. Neutrino Signals from Pulsations and Their Detection by Terrestrial Neutrino Detectors Peer-reviewed

Shing-Chi Leung, Sergei Blinnikov, Koji Ishidoshiro, Alexandre Kozlov, Ken’ichi Nomoto

The Astrophysical Journal　889　(2)　75-75　2020/02/01
Publisher: American Astronomical Society
DOI： 10.3847/1538-4357/ab6211 　

eISSN： 1538-4357
Scintillation balloon for liquid scintillator base Neutrinoless double beta decay search experiments Peer-reviewed

S.Obara, Y.Gando, K.Ishidoshiro

Journal of Physics: Conference Series　1468　012136-012136　2020/02
Publisher: IOP Publishing
DOI： 10.1088/1742-6596/1468/1/012136 　

ISSN： 1742-6588

eISSN： 1742-6596
Detectability of Collective Neutrino Oscillation Signatures in the Supernova Explosion of a 8.8 $M_\odot$ star Peer-reviewed

Koji Ishidoshiro

Physical Review D　101　(6)　2019/07/01
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevd.101.063027 　

ISSN： 2470-0010

eISSN： 2470-0029

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In order to investigate the impact of collective neutrino oscillations (CNO) on the neutrino signal from a nearby supernova, we perform 3-flavor neutrino oscillation simulations employing the multiangle effect. The background hydrodynamic model is based on the neutrino hydrodynamic simulation of a 8.8 \Msun progenitor star. We find that CNO commences after some 200 ms post bounce. Before this, CNO is suppressed by matter-induced decoherence. In the inverted mass hierarchy, the spectrum of $\bar{\nu}_e$ becomes softer after the onset of CNO. To evaluate the detectability of this modification, we define a hardness ratio between the number of high energy neutrino events and low energy neutrino events. We show that Hyper-Kamiokande (HK) can distinguish the effect of CNO for supernova distances out to $\sim 10$ kpc. On the other hand, for the normal mass hierarchy, the spectrum of $\nu_e$ becomes softer after the onset of CNO, and we show that DUNE can distinguish this feature for supernova distances out to $\sim 10$ kpc. F urthermore, we show that if the spectrum of $\bar{\nu}_e$ in HK becomes softer due to CNO, the spectrum of $\nu_e$ in DUNE becomes harder, and vice versa. This synergistic observations in $\bar{\nu}_e$ and $\nu_e$, by HK and DUNE respectively, will be an intriguing opportunity to test the occurrence of CNO.
Scintillation balloon for neutrinoless double-beta decay search with liquid scintillator detectors Peer-reviewed

Koji Ishidoshiro

Progress of Theoretical and Experimental Physics　(7)　2019/07/01

DOI： 10.1093/ptep/ptz064 　

ISSN： 2050-3911
Precision Analysis of the Xe 136 Two-Neutrino ββ Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements Peer-reviewed

A. Gando, Y. Gando, T. Hachiya, M. Ha Minh, S. Hayashida, Y. Honda, K. Hosokawa, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, K. Kamizawa, T. Kinoshita, M. Koga, S. Matsuda, T. Mitsui, K. Nakamura, A. Ono, N. Ota, S. Otsuka, H. Ozaki, Y. Shibukawa, I. Shimizu, Y. Shirahata, J. Shirai, T. Sato, K. Soma, A. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, H. Watanabe, D. Chernyak, A. Kozlov, S. Obara, S. Yoshida, Y. Takemoto, S. Umehara, K. Fushimi, S. Hirata, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, T. O'Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski, J. Menéndez, R. Dvornický, F. Šimkovic

Physical Review Letters　122　(19)　2019/05/13

DOI： 10.1103/PhysRevLett.122.192501 　

ISSN： 0031-9007

eISSN： 1079-7114
Neutrinos from Presupernova Stars

Takashi Yoshida, Koh Takahashi, Hideyuki Umeda, Koji Ishidoshiro

Springer Proceedings in Physics　219　157-161　2019
Publisher: Springer Science and Business Media, LLC
DOI： 10.1007/978-3-030-13876-9_26 　

ISSN： 1867-4941 0930-8989
Dark Matter Search with Superconducting Detector Peer-reviewed

Keishi Hosokawa, Koji Ishidoshiro, Atsushi Suzuki, Satoru Mima, Yasuhiro Kishimoto

Proceedings of International Conference on Technology and Instrumentation in Particle Physics 2017　97-100　2018/08
Kamland-zen

S. Abe, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, K. Hosokawa, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, T. Kinoshita, M. Koga, T. Mitsui, H. Miyake, K. Nakamura, S. Obara, A. Ohno, N. Ohta, S. Ohtsuka, H. Ozaki, T. Sato, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, A. Takeuchi, K. Tamae, K. Ueshima, Y. Wada, H. Watanabe, A. Kozlov, D. Chernyak, Y. Takemoto, S. Umehara, S. Yoshida, K. Fushimi, S. Hirata, B. E. Berger, B. K. Fujikawa, L. A. Winslow, J. Ouellet, E. Krupczak, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, T. O’Donnell, J. A. Detwiler, S. Enomoto, M. P. Decowski

Neutrino 2018 - 28th International Conference on Neutrino Physics and Astrophysics, Conference Proceedings　2018
A Search for Electron Antineutrinos Associated with Gravitational-wave Events GW150914 and GW151226 Using KamLAND (vol 829, L34, 2016) Peer-reviewed

A. Gando, Y. Gando, T. Hachiya, A. Hayashi, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Karino, M. Koga, S. Matsuda, T. Mitsui, K. Nakamura, S. Obara, T. Oura, H. Ozaki, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, T. Takai, K. Tamae, Y. Teraoka, K. Ueshima, H. Watanabe, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, A. Piepke, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, J. G. Learned, J. Maricic, M. Sakai, L. A. Winslow, E. Krupczak, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

ASTROPHYSICAL JOURNAL LETTERS　851　(1)　2017/12

DOI： 10.3847/2041-8213/aa9a32 　

ISSN： 2041-8205

eISSN： 2041-8213
Neutrino Emissions in All Flavors up to the Pre-bounce of Massive Stars and the Possibility of Their Detections Peer-reviewed

Chinami Kato, Hiroki Nagakura, Shun Furusawa, Koh Takahashi, Hideyuki Umeda, Takashi Yoshida, Koji Ishidoshiro, Shoichi Yamada

ASTROPHYSICAL JOURNAL　848　(1)　48　2017/10

DOI： 10.3847/1538-4357/aa8b72 　

ISSN： 0004-637X

eISSN： 1538-4357
Observations of presupernova neutrinos relating to the nal evolution of massive stars Peer-reviewed

T. Yoshida, K. Takahashi, H. Umeda, K. Ishidoshiro

Journal of Physics: Conference Series　888　(1)　2017/09/20
Publisher: Institute of Physics Publishing
DOI： 10.1088/1742-6596/888/1/012259 　

ISSN： 1742-6596 1742-6588
Pre-SN neutrino emissions from ONe cores in the progenitors of CCSNe Peer-reviewed

Kato Chinami, Yamada S, Nagakura H, Furusawa S, Takahashi K, Umeda H, Yoshida T, Ishidoshiro K

LIVES AND DEATH-THROES OF MASSIVE STARS　12　(S329)　411　2017

DOI： 10.1017/S1743921317002502 　

ISSN： 1743-9213
A SEARCH FOR ELECTRON ANTINEUTRINOS ASSOCIATED WITH GRAVITATIONAL-WAVE EVENTS GW150914 AND GW151226 USING KAMLAND Peer-reviewed

A. Gando, Y. Gando, T. Hachiya, A. Hayashi, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Karino, M. Koga, S. Matsuda, T. Mitsui, K. Nakamura, S. Obara, T. Oura, H. Ozaki, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, T. Takai, K. Tamae, Y. Teraoka, K. Ueshima, H. Watanabe, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, A. Piepke, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, J. G. Learned, J. Maricic, M. Sakai, L. A. Winslow, E. Krupczak, J. Ouellet, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

ASTROPHYSICAL JOURNAL LETTERS　829　(2)　L34　2016/10

DOI： 10.3847/2041-8205/829/2/L34 　

ISSN： 2041-8205

eISSN： 2041-8213
Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen Peer-reviewed

A. Gando, Y. Gando, T. Hachiya, A. Hayashi, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Karino, M. Koga, S. Matsuda, T. Mitsui, K. Nakamura, S. Obara, T. Oura, H. Ozaki, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, T. Takai, K. Tamae, Y. Teraoka, K. Ueshima, H. Watanabe, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

PHYSICAL REVIEW LETTERS　117　(8)　082503　2016/08

DOI： 10.1103/PhysRevLett.117.082503 　

ISSN： 0031-9007

eISSN： 1079-7114
Presupernova neutrino events relating to the final evolution of massive stars Peer-reviewed

Takashi Yoshida, Koh Takahashi, Hideyuki Umeda, Koji Ishidoshiro

PHYSICAL REVIEW D　93　(12)　123012　2016/06

DOI： 10.1103/PhysRevD.93.123012 　

ISSN： 2470-0010

eISSN： 2470-0029
Search for double-beta decay of Xe-136 to excited states of Ba-136 with the KamLAND-Zen experiment Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, M. Otani, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

NUCLEAR PHYSICS A　946　171-181　2016/02

DOI： 10.1016/j.nuclphysa.2015.11.011 　

ISSN： 0375-9474

eISSN： 1873-1554
Be-7 solar neutrino measurement with KamLAND Peer-reviewed

A. Gando, Y. Gando, H. Hanakago, H. Ikeda, K. Inoue, K. Ishidoshiro, H. Ishikawa, Y. Kishimoto, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakajima, K. Nakamura, A. Obata, A. Oki, Y. Oki, M. Otani, I. Shimizu, J. Shirai, A. Suzuki, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, C. Grant, G. Keefer, D. W. McKee, A. Piepke, T. I. Banks, T. Bloxham, S. J. Freedman, B. K. Fujikawa, K. Han, L. Hsu, K. Ichimura, H. Murayama, T. O'Donnell, H. M. Steiner, L. A. Winslow, D. Dwyer, C. Mauger, R. D. McKeown, C. Zhang, B. E. Berger, C. E. Lane, J. Maricic, T. Miletic, J. G. Learned, M. Sakai, G. A. Horton-Smith, A. Tang, K. E. Downum, K. Tolich, Y. Efremenko, Y. Kamyshkov, O. Perevozchikov, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, K. Heeger, M. P. Decowski

PHYSICAL REVIEW C　92　(5)　055808　2015/11

DOI： 10.1103/PhysRevC.92.055808 　

ISSN： 0556-2813

eISSN： 1089-490X
Search for the proton decay mode p → ν ¯ K+ with KamLAND SEARCH for the PROTON DECAY MODE ⋯ K. ASAKURA et al

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, C. Grant, A. Piepke, T. I. Banks, B. E. Berger, S. J. Freedman, B. K. Fujikawa, T. O'Donnell, J. G. Learned, J. Maricic, M. Sakai, S. Dazeley, R. Svoboda, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

Physical Review D - Particles, Fields, Gravitation and Cosmology　92　(5)　2015/09/23
Publisher: American Physical Society
DOI： 10.1103/PhysRevD.92.052006 　

ISSN： 1550-2368 1550-7998
Search for the proton decay mode p -> (v)over-barK(+) with KamLAND Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, C. Grant, A. Piepke, T. I. Banks, B. E. Berger, S. J. Freedman, B. K. Fujikawa, T. O'Donnell, J. G. Learned, J. Maricic, M. Sakai, S. Dazeley, R. Svoboda, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

PHYSICAL REVIEW D　92　(5)　052006　2015/09

DOI： 10.1103/PhysRevD.92.052006 　

ISSN： 2470-0010

eISSN： 2470-0029
PRE-SUPERNOVA NEUTRINO EMISSIONS FROM ONe. CORES IN THE PROGENITORS OF CORE-COLLAPSE SUPERNOVAE: ARE THEY DISTINGUISHABLE FROM THOSE OF Fe CORES? Peer-reviewed

Chinami Kato, Milad Delfan Azari, Shoichi Yamada, Koh Takahashi, Hideyuki Umeda, Takashi Yoshida, Koji Ishidoshiro

ASTROPHYSICAL JOURNAL　808　(2)　168　2015/08

DOI： 10.1088/0004-637X/808/2/168 　

ISSN： 0004-637X

eISSN： 1538-4357
Results from KamLAND-Zen Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, M. Otani, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, T. I. Banks, S. J. Freedman, B. K. Fujikawa, T. O'donnell, L. A. Winslow, B. E. Berger, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

AIP Conference Proceedings　1666　(170003)　1-8　2015/07/15
Publisher: American Institute of Physics Inc.
DOI： 10.1063/1.4915593 　

ISSN： 1551-7616 0094-243X
STUDY OF ELECTRON ANTI-NEUTRINOS ASSOCIATED WITH GAMMA-RAY BURSTS USING KamLAND Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, A. Piepke, T. I. Banks, B. E. Berger, B. K. Fujikawa, T. O'Donnell, J. G. Learned, J. Maricic, M. Sakai, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

ASTROPHYSICAL JOURNAL　806　(1)　87　2015/06

DOI： 10.1088/0004-637X/806/1/87 　

ISSN： 0004-637X

eISSN： 1538-4357
23pDM-13 Supernova ObservatioN NETwork based on the list of Supernova Progenitor IN our Galaxy

Ohishi N., Tanaka M., Ishidoshiro K., Koshio Y., Tagoshi H., Kanda N.

Meeting Abstracts of the Physical Society of Japan　70　484-484　2015
Publisher: The Physical Society of Japan (JPS)
DOI： 10.11316/jpsgaiyo.70.1.0_484 　

ISSN： 2189-079X
23pDM-7 Neutrino emission from the progenitor of CCSNe and detection possibility

K. Chinami, Yamada S., Takahashi K., Ishidoshiro K.

Meeting Abstracts of the Physical Society of Japan　70　479-479　2015
Publisher: The Physical Society of Japan (JPS)
DOI： 10.11316/jpsgaiyo.70.1.0_479 　

ISSN： 2189-079X
Results from KamLAND-Zen Peer-reviewed

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, M. Otani, T. Oura, I. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, T. I. Banks, S. J. Freedman, B. K. Fujikawa, T. O'Donnell, L. A. Winslow, B. E. Berger, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

XXVI INTERNATIONAL CONFERENCE ON NEUTRINO PHYSICS AND ASTROPHYSICS (NEUTRINO 2014)　1666　2015

DOI： 10.1063/14915593 　

ISSN： 0094-243X
Mission Design of LiteBIRD Peer-reviewed

T. Matsumura, Y. Akiba, J. Borrill, Y. Chinone, M. Dobbs, H. Fuke, A. Ghribi, M. Hasegawa, K. Hattori, M. Hattori, M. Hazumi, W. Holzapfel, Y. Inoue, K. Ishidoshiro, H. Ishino, H. Ishitsuka, K. Karatsu, N. Katayama, I. Kawano, A. Kibayashi, Y. Kibe, K. Kimura, N. Kimura, K. Koga, M. Kozu, E. Komatsu, A. Lee, H. Matsuhara, S. Mima, K. Mitsuda, K. Mizukami, H. Morii, T. Morishima, S. Murayama, M. Nagai, R. Nagata, S. Nakamura, M. Naruse, K. Natsume, T. Nishibori, H. Nishino, A. Noda, T. Noguchi, H. Ogawa, S. Oguri, I. Ohta, C. Otani, P. Richards, S. Sakai, N. Sato, Y. Sato, Y. Sekimoto, A. Shimizu, K. Shinozaki, H. Sugita, T. Suzuki, A. Suzuki, O. Tajima, S. Takada, S. Takakura, Y. Takei, T. Tomaru, Y. Uzawa, T. Wada, H. Watanabe, M. Yoshida, N. Yamasaki, T. Yoshida, K. Yotsumoto

JOURNAL OF LOW TEMPERATURE PHYSICS　176　(5-6)　733-740　2014/09

DOI： 10.1007/s10909-013-0996-1 　

ISSN： 0022-2291

eISSN： 1573-7357
Progress and challenges in advanced ground-based gravitational-wave detectors Peer-reviewed

M. Adier, F. Aguilar, T. Akutsu, M. A. Arain, M. Ando, L. Anghinolfi, P. Antonini, Y. Aso, B. W. Barr, L. Barsotti, M. G. Beker, A. S. Bell, L. Bellon, A. Bertolini, C. Blair, M. R. Blom, C. Bogan, C. Bond, F. S. Bortoli, D. Brown, B. C. Buchler, H. J. Bulten, G. Cagnoli, M. Canepa, L. Carbone, E. Cesarini, B. Champagnon, D. Chen, A. Chincarini, A. Chtanov, S. S. Y. Chua, G. Ciani, E. Coccia, A. Conte, M. Cortese, M. Daloisio, M. Damjanic, R. A. Day, D. De Ligny, J. Degallaix, M. Doets, V. Dolique, K. Dooley, S. Dwyer, M. Evans, M. Factourovich, V. Fafone, S. Farinon, D. Feldbaum, R. Flaminio, D. Forest, C. Frajuca, M. Frede, A. Freise, T. Fricke, D. Friedrich, P. Fritschel, V. V. Frolov, P. Fulda, M. Geitner, G. Gemme, J. Gleason, S. Gossler, N. Gordon, C. Graef, M. Granata, S. Gras, M. Gross, H. Grote, R. Gustafson, M. Hanke, M. Heintze, E. Hennes, S. Hild, S. H. Huttner, K. Ishidoshiro, K. Izumi, K. Kawabe, S. Kawamura, F. Kawazoe, M. Kasprzack, A. Khalaidovski, N. Kimura, S. Koike, T. Kume, A. Kumeta, K. Kuroda, P. Kwee, B. Lagrange, P. K. Lam, M. Landry, S. Leavey, M. Leonardi, T. Li, Z. Liu, M. Lorenzini, G. Losurdo, D. Lumaca, J. Macarthur, N. S. Magalhaes, E. Majorana, V. Malvezzi, V. Mangano, G. Mansell, J. Marque, R. Martin, D. Martynov, N. Mavalvala, D. E. McClelland, G. D. Meadors, T. Meier, A. Mermet, C. Michel, Y. Minenkov, C. M. Mow-Lowry, L. Mudadu, C. L. Mueller, G. Mueller, F. Mul, D. Nanda Kumar, I. Nardecchia, L. Naticchioni, M. Neri, Y. Niwa, M. Ohashi, K. Okada, P. Oppermann, L. Pinard, J. Poeld, M. Prato, G. A. Prodi, O. Puncken, P. Puppo, V. Quetschke, D. H. Reitze, P. Risson, A. Rocchi, N. Saito, Y. Saito, Y. Sakakibara, B. Sassolas, A. Schimmel, R. Schnabel, R. M. S. Schofield, E. Schreiber, V. Sequino, E. Serra, D. A. Shaddock, A. Shoda, D. H. Shoemaker, K. Shibata, D. Sigg, N. Smith-Lefebvre, K. Somiya, B. Sorazu, M. S. Stefszky, K. A. Strain, N. Straniero, T. Suzuki, R. Takahashi, D. B. Tanner, G. Tellez, T. Theeg, C. Tokoku, K. Tsubono, T. Uchiyama, S. Ueda, H. Vahlbruch, G. Vajente, C. Vorvick, J. F. J. van den Brand, A. Wade, R. Ward, P. Wessels, L. Williams, B. Willke, L. Winkelmann, K. Yamamoto, J. -P. Zendri

GENERAL RELATIVITY AND GRAVITATION　46　(8)　2014/08

DOI： 10.1007/s10714-014-1749-4 　

ISSN： 0001-7701

eISSN： 1572-9532
LiteBIRD: Mission overview and design tradeoffs Peer-reviewed

T. Matsumura, Y. Akiba, J. Borrill, Y. Chinone, M. Dobbs, H. Fuke, M. Hasegawa, K. Hattori, M. Hattori, M. Hazumi, W. Holzapfel, Y. Hori, J. Inatani, M. Inoue, Y. Inoue, K. Ishidoshiro, H. Ishino, H. Ishitsuka, K. Karatsu, S. Kashima, N. Katayama, I. Kawano, A. Kibayashi, Y. Kibe, K. Kimura, N. Kimura, E. Komatsu, M. Kozu, K. Koga, A. Lee, H. Matsuhara, S. Mima, K. Mitsuda, K. Mizukami, H. Morii, T. Morishima, M. Nagai, R. Nagata, S. Nakamura, M. Naruse, T. Namikawa, K. Natsume, T. Nishibori, K. Nishijo, H. Nishino, A. Noda, T. Noguchi, H. Ogawa, S. Oguri, I. S. Ohta, N. Okada, C. Otani, P. Richards, S. Sakai, N. Sato, Y. Sato, Y. Segawa, Y. Sekimoto, K. Shinozaki, H. Sugita, A. Suzuki, T. Suzuki, O. Tajima, S. Takada, S. Takakura, Y. Takei, T. Tomaru, Y. Uzawa, T. Wada, H. Watanabe, Y. Yamada, H. Yamaguchi, N. Yamasaki, M. Yoshida, T. Yoshida, K. Yotsumoto

SPACE TELESCOPES AND INSTRUMENTATION 2014: OPTICAL, INFRARED, AND MILLIMETER WAVE　9143　2014

DOI： 10.1117/12.2055794 　

ISSN： 0277-786X
Search for a stochastic gravitational-wave background using a pair of torsion-bar antennas Peer-reviewed

Ayaka Shoda, Masaki Ando, Koji Ishidoshiro, Kenshi Okada, Wataru Kokuyama, Yoichi Aso, Kimio Tsubono

PHYSICAL REVIEW D　89　(2)　027101　2014/01

DOI： 10.1103/PhysRevD.89.027101 　

ISSN： 1550-7998

eISSN： 1550-2368
CeLAND: search for a 4th light neutrino state with a 3 PBq 144Ce-144Pr electron antineutrino generator in KamLAND

A. Gando, Y. Gando, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, H. Ishikawa, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, Y. Oki, M. Otani, I. Shimizu, J. Shirai, F. Suekane, A. Suzuki, Y. Takemoto, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, Y. Yamauchi, H. Yoshida, M. Cribier, M. Durero, V. Fischer, J. Gaffiot, N. Jonqueres, A. Kouchner, T. Lasserre, D. Leterme, A. Letourneau, D. Lhuillier, G. Mention, G. Rampal, L. Scola, Ch. Veyssiere, M. Vivier, P. Yala, B. E. Berger, A. Kozlov, T. Banks, D. Dwyer, B. K. Fujikawa, K. Han, Yu. G. Kolomensky, Y. Mei, T. O'Donnell, P. Decowski, D. M. Markoff, S. Yoshida, V. N. Kornoukhov, T. V, M. Gelis, G. V. Tikhomirov, J. G. Learned, J. Maricic, S. Matsuno, R. Milincic, H. J. Karwowski, Y. Efremenko, A. Detwiler, S. Enomoto

2013/12/04

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The reactor neutrino and gallium anomalies can be tested with a 3-4 PBq (75-100 kCi scale) 144Ce-144Pr antineutrino beta-source deployed at the center or next to a large low-background liquid scintillator detector. The antineutrino generator will be produced by the Russian reprocessing plant PA Mayak as early as 2014, transported to Japan, and deployed in the Kamioka Liquid Scintillator Anti-Neutrino Detector (KamLAND) as early as 2015. KamLAND's 13 m diameter target volume provides a suitable environment to measure the energy and position dependence of the detected neutrino flux. A characteristic oscillation pattern would be visible for a baseline of about 10 m or less, providing a very clean signal of neutrino disappearance into a yet-unknown, sterile neutrino state. This will provide a comprehensive test of the electron dissaperance neutrino anomalies and could lead to the discovery of a 4th neutrino state for Delta_m^2 > 0.1 eV^2 and sin^2(2theta) > 0.05.
White paper: CeLAND - Investigation of the reactor antineutrino anomaly with an intense 144Ce-144Pr antineutrino source in KamLAND

A. Gando, Y. Gando, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, H. Ishikawa, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, Y. Oki, M. Otani, I. Shimizu, J. Shirai, F. Suekane, A. Suzuki, Y. Takemoto, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, Y. Yamauchi, H. Yoshida, T. Banks, B. E. Berger, M. Cribier, P. Decowski, J. A. Detwiler, M. Durero, D. Dwyer, Y. Efremenko, S. Enomoto, V. Fischer, B. K. Fujikawa, J. Gaffiot, V. M. Gelis, H. J. Karwowski, Yu. G. Kolomensky, A. Kozlov, V. N. Kornoukhov, T. Lasserre, J. G. Learned, A. Letourneau, D. Lhuillier, J. Maricic, D. M. Markoff, S. Matsuno, G. Mention, R. Milincic, T. ODonnell, I. S. Saldikov, L. Scola, G. V. Tikhomirov, Ch. Veyssiere, M. Vivier, S. Yoshida

2013/09/26

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We propose to test for short baseline neutrino oscillations, implied by the recent reevaluation of the reactor antineutrino flux and by anomalous results from the gallium solar neutrino detectors. The test will consist of producing a 75 kCi 144Ce - 144Pr antineutrino source to be deployed in the Kamioka Liquid Scintillator Anti-Neutrino Detector (KamLAND). KamLAND's 13m diameter target volume provides a suitable environment to measure energy and position dependence of the detected neutrino flux. A characteristic oscillation pattern would be visible for a baseline of about 10 m or less, providing a very clean signal of neutrino disappearance into a yet-unknown, "sterile" state. Such a measurement will be free of any reactor-related uncertainties. After 1.5 years of data taking the Reactor Antineutrino Anomaly parameter space will be tested at > 95% C.L.
Reactor on-off antineutrino measurement with KamLAND Peer-reviewed

A. Gando, Y. Gando, H. Hanakago, H. Ikeda, K. Inoue, K. Ishidoshiro, H. Ishikawa, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, A. Obata, A. Oki, Y. Oki, M. Otani, I. Shimizu, J. Shirai, A. Suzuki, Y. Takemoto, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, Y. Yamauchi, H. Yoshida, A. Kozlov, S. Yoshida, A. Piepke, T. I. Banks, B. K. Fujikawa, K. Han, T. O'Donnell, B. E. Berger, J. G. Learned, S. Matsuno, M. Sakai, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

Physical Review D - Particles, Fields, Gravitation and Cosmology　88　(3)　033001　2013/08/02

DOI： 10.1103/PhysRevD.88.033001 　

ISSN： 1550-7998 1550-2368
THE Q/U IMAGING EXPERIMENT INSTRUMENT Peer-reviewed

C. Bischoff, A. Brizius, I. Buder, Y. Chinone, K. Cleary, R. N. Dumoulin, A. Kusaka, R. Monsalve, S. K. Naess, L. B. Newburgh, G. Nixon, R. Reeves, K. M. Smith, K. Vanderlinde, I. K. Wehus, M. Bogdan, R. Bustos, S. E. Church, R. Davis, C. Dickinson, H. K. Eriksen, T. Gaier, J. O. Gundersen, M. Hasegawa, M. Hazumi, C. Holler, K. M. Huffenberger, W. A. Imbriale, K. Ishidoshiro, M. E. Jones, P. Kangaslahti, D. J. Kapner, C. R. Lawrence, E. M. Leitch, M. Limon, J. J. McMahon, A. D. Miller, M. Nagai, H. Nguyen, T. J. Pearson, L. Piccirillo, S. J. E. Radford, A. C. S. Readhead, J. L. Richards, D. Samtleben, M. Seiffert, M. C. Shepherd, S. T. Staggs, O. Tajima, K. L. Thompson, R. Williamson, B. Winstein, E. J. Wollack, J. T. L. Zwart

ASTROPHYSICAL JOURNAL　768　(1)　9　2013/05

DOI： 10.1088/0004-637X/768/1/9 　

ISSN： 0004-637X
The QUIET Instrument Peer-reviewed

QUIET Collaboration, C. Bischoff, A. Brizius, I. Buder, Y. Chinone, K. Cleary, R. N. Dumoulin, A. Kusaka, R. Monsalve, S. K. Naess, L. B. Newburgh, G. Nixon, R. Reeves, K. M. Smith, K. Vanderlinde, I. K. Wehus, M. Bogdan, R. Bustos, S. E. Church, R. Davis, C. Dickinson, H. K. Eriksen, T. Gaier, J. O. Gundersen, M. Hasegawa, M. Hazumi, C. Holler, K. M. Huffenberger, W. A. Imbriale, K. Ishidoshiro, M. E. Jones, P. Kangaslahti, D. J. Kapner, C. R. Lawrence, E. M. Leitch, M. Limon, J. J. McMahon, A. D. Miller, M. Nagai, H. Nguyen, T. J. Pearson, L. Piccirillo, S. J. E. Radford, A. C, S. Readhead, J. L. Richards, D. Samtleben, M. Seiffert, M. C. Shepherd, S. T. Staggs, O. Tajima, K. L. Thompson, R. Williamson, B. Winstein, E. J. Wollack, J. T. L. Zwart

The Astrophysical Journal, Volume 768, Number 1　2013/04

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The Q/U Imaging ExperimenT (QUIET) is designed to measure polarization in the Cosmic Microwave Background, targeting the imprint of inflationary gravitational waves at large angular scales (~ 1 degree). Between 2008 October and 2010 December, two independent receiver arrays were deployed sequentially on a 1.4 m side-fed Dragonian telescope. The polarimeters which form the focal planes use a highly compact design based on High Electron Mobility Transistors (HEMTs) that provides simultaneous measurements of the Stokes parameters Q, U, and I in a single module. The 17-element Q-band polarimeter array, with a central frequency of 43.1 GHz, has the best sensitivity (69 uK sqrt(s)) and the lowest instrumental systematic errors ever achieved in this band, contributing to the tensor-to-scalar ratio at r < 0.1. The 84-element W-band polarimeter array has a sensitivity of 87 uK sqrt(s) at a central frequency of 94.5 GHz. It has the lowest systematic errors to date, contributing at r < 0.01. The two arrays together cover multipoles in the range l= 25-975. These are the largest HEMT-based arrays deployed to date. This article describes the design, calibration, performance of, and sources of systematic error for the instrument.
Limit on neutrinoless ββ decay of Xe136 from the first phase of KamLAND-Zen and comparison with the positive claim in Ge76 Peer-reviewed

A. Gando, Y. Gando, H. Hanakago, H. Ikeda, K. Inoue, K. Ishidoshiro, R. Kato, M. Koga, S. Matsuda, T. Mitsui, D. Motoki, T. Nakada, K. Nakamura, A. Obata, A. Oki, Y. Ono, M. Otani, I. Shimizu, J. Shirai, A. Suzuki, Y. Takemoto, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, S. Yamada, H. Yoshida, A. Kozlov, S. Yoshida, T. I. Banks, S. J. Freedman, B. K. Fujikawa, K. Han, T. O'Donnell, B. E. Berger, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

Physical Review Letters　110　(6)　062502　2013/02/07

DOI： 10.1103/PhysRevLett.110.062502 　

ISSN： 0031-9007 1079-7114
SECOND SEASON QUIET OBSERVATIONS: MEASUREMENTS OF THE COSMIC MICROWAVE BACKGROUND POLARIZATION POWER SPECTRUM AT 95 GHz Peer-reviewed

D. Araujo, C. Bischoff, A. Brizius, I. Buder, Y. Chinone, K. Cleary, R. N. Dumoulin, A. Kusaka, R. Monsalve, S. Kaess, L. B. Newburgh, R. Reeves, I. K. Wehus, J. T. L. Zwart, L. Bronfman, R. Bustos, S. E. Church, C. Dickinson, H. K. Eriksen, T. Gaier, J. O. Gundersen, M. Hasegawa, M. Hazumi, K. M. Huffenberger, K. Ishidoshiro, M. E. Jones, P. Kangaslahti, D. J. Kapner, D. Kubik, C. R. Lawrence, M. Limon, J. J. McMahon, A. D. Miller, M. Nagai, H. Nguyen, G. Nixon, T. J. Pearson, L. Piccirillo, S. J. E. Radford, A. C. S. Readhead, J. L. Richards, D. Samtleben, M. Seiffert, M. C. Shepherd, K. M. Smith, S. T. Staggs, O. Tajima, K. L. Thompson, K. Vanderlinde, R. Williamson

ASTROPHYSICAL JOURNAL　760　(2)　145　2012/12

DOI： 10.1088/0004-637X/760/2/145 　

ISSN： 0004-637X
Readout System With On-Board Demodulation for CMB Polarization Experiments Using Coherent Polarimeter Arrays Peer-reviewed

Koji Ishidoshiro, Makoto Nagai, Takeo Higuchi, Masaya Hasegawa, Masashi Hazumi, Masahiro Ikeno, Osamu Tajima, Manobu Tanaka, Tomohisa Uchida

IEEE TRANSACTIONS ON NUCLEAR SCIENCE　59　(3)　647-655　2012/06

DOI： 10.1109/TNS.2012.2195029 　

ISSN： 0018-9499

eISSN： 1558-1578
Ethernet-Based DAQ System for QUIET-II Detectors

M. Nagai, K. Ishidoshiro, T. Higuchi, M. Ikeno, M. Hasegawa, M. Hazumi, O. Tajima, M. Tanaka, T. Uchida

JOURNAL OF LOW TEMPERATURE PHYSICS　167　(5-6)　689-694　2012/06

DOI： 10.1007/s10909-012-0561-3 　

ISSN： 0022-2291
Laboratory Calibration System for CMB Polarization Detectors

M. Hasegawa, O. Tajima, Y. Chinone, M. Hazumi, K. Ishidoshiro, M. Nagai

JOURNAL OF LOW TEMPERATURE PHYSICS　167　(5-6)　892-897　2012/06

DOI： 10.1007/s10909-012-0508-8 　

ISSN： 0022-2291
Note: Innovative demodulation scheme for coherent detectors in cosmic microwave background experiments Peer-reviewed

K. Ishidoshiro, Y. Chinone, M. Hasegawa, M. Hazumi, M. Nagai, O. Tajima

REVIEW OF SCIENTIFIC INSTRUMENTS　83　(5)　056104　2012/05

DOI： 10.1063/1.4719922 　

ISSN： 0034-6748

eISSN： 1089-7623
Laboratory characterization of CMB polarimeters using novel calibration system with cryogenically cooled loads

Makoto Nagai, Koji Ishidoshiro, Masaya Hasegawa, Masashi Hazumi, Osamu Tajima

MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VI　8452　2012

DOI： 10.1117/12.925626 　

ISSN： 0277-786X
LiteBIRD: A small satellite for the studies of B-mode polarization and inflation from cosmic background radiation detection Peer-reviewed

M. Hazumi, J. Borrill, Y. Chinone, M. A. Dobbs, H. Fuke, A. Ghribi, M. Hasegawa, K. Hattori, M. Hattori, W. L. Holzapfel, Y. Inoue, K. Ishidoshiro, H. Ishino, K. Karatsu, N. Katayama, I. Kawano, A. Kibayashi, Y. Kibe, N. Kimura, K. Koga, E. Komatsu, A. T. Lee, H. Matsuhara, T. Matsumura, S. Mima, K. Mitsuda, H. Morii, S. Murayama, M. Nagai, R. Nagata, S. Nakamura, K. Natsume, H. Nishino, A. Noda, T. Noguchi, I. Ohta, C. Otani, P. L. Richards, S. Sakai, N. Sato, Y. Sato, Y. Sekimoto, A. Shimizu, K. Shinozaki, H. Sugita, A. Suzuki, T. Suzuki, O. Tajima, S. Takada, Y. Takagi, Y. Takei, T. Tomaru, Y. Uzawa, H. Watanabe, N. Yamasaki, M. Yoshida, T. Yoshida, K. Yotsumoto

SPACE TELESCOPES AND INSTRUMENTATION 2012: OPTICAL, INFRARED, AND MILLIMETER WAVE　8442　2012

DOI： 10.1117/12.926743 　

ISSN： 0277-786X
Search for a Stochastic Gravitational-wave Background with Torsion-bar Antennas Peer-reviewed

Ayaka Shoda, Masaki Ando, Kenshi Okada, Koji Ishidoshiro, Wataru Kokuyama, Yoichi Aso, Kimio Tsubono

9TH EDOARDO AMALDI CONFERENCE ON GRAVITATIONAL WAVES (AMALDI 9) AND THE 2011 NUMERICAL RELATIVITY - DATA ANALYSIS MEETING (NRDA 2011)　363　2012

DOI： 10.1088/1742-6596/363/1/012017 　

ISSN： 1742-6588
Calibration system with cryogenically-cooled loads for cosmic microwave background polarization detectors Peer-reviewed

M. Hasegawa, O. Tajima, Y. Chinone, M. Hazumi, K. Ishidoshiro, M. Nagai

REVIEW OF SCIENTIFIC INSTRUMENTS　82　(5)　054501　2011/05

DOI： 10.1063/1.3590931 　

ISSN： 0034-6748

eISSN： 1089-7623
The Japanese space gravitational wave antenna: DECIGO Peer-reviewed

Seiji Kawamura, Masaki Ando, Naoki Seto, Shuichi Sato, Takashi Nakamura, Kimio Tsubono, Nobuyuki Kanda, Takahiro Tanaka, Jun'ichi Yokoyama, Ikkoh Funaki, Kenji Numata, Kunihito Ioka, Takeshi Takashima, Kazuhiro Agatsuma, Tomotada Akutsu, Koh-suke Aoyanagi, Koji Arai, Akito Araya, Hideki Asada, Yoichi Aso, Dan Chen, Takeshi Chiba, Toshikazu Ebisuzaki, Yumiko Ejiri, Motohiro Enoki, Yoshiharu Eriguchi, Masa-Katsu Fujimoto, Ryuichi Fujita, Mitsuhiro Fukushima, Toshifumi Futamase, Tomohiro Harada, Tatsuaki Hashimoto, Kazuhiro Hayama, Wataru Hikida, Yoshiaki Himemoto, Hisashi Hirabayashi, Takashi Hiramatsu, Feng-Lei Hong, Hideyuki Horisawa, Mizuhiko Hosokawa, Kiyotomo Ichiki, Takeshi Ikegami, Kaiki T. Inoue, Koji Ishidoshiro, Hideki Ishihara, Takehiko Ishikawa, Hideharu Ishizaki, Hiroyuki Ito, Yousuke Itoh, Kiwamu Izumi, Isao Kawano, Nobuki Kawashima, Fumiko Kawazoe, Naoko Kishimoto, Kenta Kiuchi, Shiho Kobayashi, Kazunori Kohri, Hiroyuki Koizumi, Yasufumi Kojima, Keiko Kokeyama, Wataru Kokuyama, Kei Kotake, Yoshihide Kozai, Hiroo Kunimori, Hitoshi Kuninaka, Kazuaki Kuroda, Sachiko Kuroyanagi, Kei-ichi Maeda, Hideo Matsuhara, Nobuyuki Matsumoto, Yuta Michimura, Osamu Miyakawa, Umpei Miyamoto, Shinji Miyoki, Mutsuko Y. Morimoto, Toshiyuki Morisawa, Shigenori Moriwaki, Shinji Mukohyama, Mitsuru Musha, Shigeo Nagano, Isao Naito, Kouji Nakamura, Hiroyuki Nakano, Kenichi Nakao, Shinichi Nakasuka, Yoshinori Nakayama, Kazuhiro Nakazawa, Erina Nishida, Kazutaka Nishiyama, Atsushi Nishizawa, Yoshito Niwa, Taiga Noumi, Yoshiyuki Obuchi, Masatake Ohashi, Naoko Ohishi, Masashi Ohkawa, Kenshi Okada, Norio Okada, Kenichi Oohara, Norichika Sago, Motoyuki Saijo, Ryo Saito, Masaaki Sakagami, Shin-ichiro Sakai, Shihori Sakata, Misao Sasaki, Takashi Sato, Masaru Shibata, Hisaaki Shinkai, Ayaka Shoda, Kentaro Somiya, Hajime Sotani, Naoshi Sugiyama, Yudai Suwa, Rieko Suzuki, Hideyuki Tagoshi, Fuminobu Takahashi, Kakeru Takahashi, Keitaro Takahashi, Ryutaro Takahashi, Ryuichi Takahashi, Tadayuki Takahashi, Hirotaka Takahashi, Takamori Akiteru, Tadashi Takano, Nobuyuki Tanaka, Keisuke Taniguchi, Atsushi Taruya, Hiroyuki Tashiro, Yasuo Torii, Morio Toyoshima, Shinji Tsujikawa, Yoshiki Tsunesada, Akitoshi Ueda, Ken-ichi Ueda, Masayoshi Utashima, Yaka Wakabayashi, Kent Yagi, Hiroshi Yamakawa, Kazuhiro Yamamoto, Toshitaka Yamazaki, Chul-Moon Yoo, Shijun Yoshida, Taizoh Yoshino, Ke-Xun Sun

CLASSICAL AND QUANTUM GRAVITY　28　(9)　094011　2011/05

DOI： 10.1088/0264-9381/28/9/094011 　

ISSN： 0264-9381

eISSN： 1361-6382
Upper Limit on Gravitational Wave Backgrounds at 0.2 Hz with a Torsion-Bar Antenna Peer-reviewed

Koji Ishidoshiro, Masaki Ando, Akiteru Takamori, Hirotaka Takahashi, Kenshi Okada, Nobuyuki Matsumoto, Wataru Kokuyama, Nobuyuki Kanda, Yoichi Aso, Kimio Tsubono

PHYSICAL REVIEW LETTERS　106　(16)　161101　2011/04

DOI： 10.1103/PhysRevLett.106.161101 　

ISSN： 0031-9007
Readout system with on-board demodulation for CMB polarization experiments using coherent polarimeter array Peer-reviewed

Koji Ishidoshiro, Makoto Nagai, Takeo Higuchi, Masaya Hasegawa, Masashi Hazumi, Masahiro Ikeno, Osamu Tajima, Manobu Tanaka, Tomohisa Uchida

2011 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC)　1244-1251　2011

ISSN： 1082-3654
Gravitational-wave detector realized by a superconductor Peer-reviewed

K. Ishidoshiro, M. Ando, A. Takamori, K. Okada, K. Tsubono

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS　470　(20)　1841-1844　2010/11

DOI： 10.1016/j.physc.2010.05.219 　

ISSN： 0921-4534
Torsion-Bar Antenna for Low-Frequency Gravitational-Wave Observations Peer-reviewed

Masaki Ando, Koji Ishidoshiro, Kazuhiro Yamamoto, Kent Yagi, Wataru Kokuyama, Kimio Tsubono, Akiteru Takamori

PHYSICAL REVIEW LETTERS　105　(16)　161101　2010/10

DOI： 10.1103/PhysRevLett.105.161101 　

ISSN： 0031-9007

eISSN： 1079-7114
DECIGO and DECIGO pathfinder Peer-reviewed

Masaki Ando, Seiji Kawamura, Naoki Seto, Shuichi Sato, Takashi Nakamura, Kimio Tsubono, Takeshi Takashima, Ikkoh Funaki, Kenji Numata, Nobuyuki Kanda, Takahiro Tanaka, Kunihito Ioka, Kazuhiro Agatsuma, Koh-suke Aoyanagi, Koji Arai, Akito Araya, Hideki Asada, Yoichi Aso, Takeshi Chiba, Toshikazu Ebisuzaki, Yumiko Ejiri, Motohiro Enoki, Yoshiharu Eriguchi, Masa-Katsu Fujimoto, Ryuichi Fujita, Mitsuhiro Fukushima, Toshifumi Futamase, Tomohiro Harada, Tatsuaki Hashimoto, Kazuhiro Hayama, Wataru Hikida, Yoshiaki Himemoto, Hisashi Hirabayashi, Takashi Hiramatsu, Feng-Lei Hong, Hideyuki Horisawa, Mizuhiko Hosokawa, Kiyotomo Ichiki, Takeshi Ikegami, Kaiki T. Inoue, Koji Ishidoshiro, Hideki Ishihara, Takehiko Ishikawa, Hideharu Ishizaki, Hiroyuki Ito, Yousuke Itoh, Kiwamu Izumi, Isao Kawano, Nobuki Kawashima, Fumiko Kawazoe, Naoko Kishimoto, Kenta Kiuchi, Shiho Kobayashi, Kazunori Kohri, Hiroyuki Koizumi, Yasufumi Kojima, Keiko Kokeyama, Wataru Kokuyama, Kei Kotake, Yoshihide Kozai, Hiroo Kunimori, Hitoshi Kuninaka, Kazuaki Kuroda, Kei-ichi Maeda, Hideo Matsuhara, Yasushi Mino, Osamu Miyakawa, Umpei Miyamoto, Shinji Miyoki, Mutsuko Y. Morimoto, Toshiyuki Morisawa, Shigenori Moriwaki, Shinji Mukohyama, Mitsuru Musha, Shigeo Nagano, Isao Naito, Kouji Nakamura, Masahiro Nakamura, Hiroyuki Nakano, Kenichi Nakao, Shinichi Nakasuka, Yoshinori Nakayama, Kazuhiro Nakazawa, Erina Nishida, Kazutaka Nishiyama, Atsushi Nishizawa, Yoshito Niwa, Taiga Noumi, Yoshiyuki Obuchi, Masatake Ohashi, Naoko Ohishi, Masashi Ohkawa, Kenshi Okada, Norio Okada, Kenichi Oohara, Norichika Sago, Motoyuki Saijo, Ryo Saito, Masaaki Sakagami, Shin-ichiro Sakai, Shihori Sakata, Misao Sasaki, Takashi Sato, Masaru Shibata, Hisaaki Shinkai, Kentaro Somiya, Hajime Sotani, Naoshi Sugiyama, Yudai Suwa, Rieko Suzuki, Hideyuki Tagoshi, Fuminobu Takahashi, Kakeru Takahashi, Keitaro Takahashi, Ryutaro Takahashi, Ryuichi Takahashi, Tadayuki Takahashi, Hirotaka Takahashi, Takamori Akiteru, Tadashi Takano, Keisuke Taniguchi, Atsushi Taruya, Hiroyuki Tashiro, Yasuo Torii, Morio Toyoshima, Shinji Tsujikawa, Yoshiki Tsunesada, Akitoshi Ueda, Ken-ichi Ueda, Masayoshi Utashima, Yaka Wakabayashi, Kent Yagi, Hiroshi Yamakawa, Kazuhiro Yamamoto, Toshitaka Yamazaki, Jun'ichi Yokoyama, Chul-Moon Yoo, Shijun Yoshida, Taizoh Yoshino, Ken-Xun Sun

CLASSICAL AND QUANTUM GRAVITY　27　(8)　084010　2010/04

DOI： 10.1088/0264-9381/27/8/084010 　

ISSN： 0264-9381

eISSN： 1361-6382
DECIGO pathfinder Peer-reviewed

Masaki Ando, Seiji Kawamura, Shuichi Sato, Takashi Nakamura, Kimio Tsubono, Akito Araya, Ikkoh Funaki, Kunihito Ioka, Nobuyuki Kanda, Shigenori Moriwaki, Mitsuru Musha, Kazuhiro Nakazawa, Kenji Numata, Shin-ichiro Sakai, Naoki Seto, Takeshi Takashima, Takahiro Tanaka, Kazuhiro Agatsuma, Koh-suke Aoyanagi, Koji Arai, Hideki Asada, Yoichi Aso, Takeshi Chiba, Toshikazu Ebisuzaki, Yumiko Ejiri, Motohiro Enoki, Yoshiharu Eriguchi, Masa-Katsu Fujimoto, Ryuichi Fujita, Mitsuhiro Fukushima, Toshifumi Futamase, Katsuhiko Ganzu, Tomohiro Harada, Tatsuaki Hashimoto, Kazuhiro Hayama, Wataru Hikida, Yoshiaki Himemoto, Hisashi Hirabayashi, Takashi Hiramatsu, Feng-Lei Hong, Hideyuki Horisawa, Mizuhiko Hosokawa, Kiyotomo Ichiki, Takeshi Ikegami, Kaiki T. Inoue, Koji Ishidoshiro, Hideki Ishihara, Takehiko Ishikawa, Hideharu Ishizaki, Hiroyuki Ito, Yousuke Itoh, Nobuki Kawashima, Fumiko Kawazoe, Naoko Kishimoto, Kenta Kiuchi, Shiho Kobayashi, Kazunori Kohri, Hiroyuki Koizumi, Yasufumi Kojima, Keiko Kokeyama, Wataru Kokuyama, Kei Kotake, Yoshihide Kozai, Hideaki Kudoh, Hiroo Kunimori, Hitoshi Kuninaka, Kazuaki Kuroda, Kei-ichi Maeda, Hideo Matsuhara, Yasushi Mino, Osamu Miyakawa, Shinji Miyoki, Mutsuko Y. Morimoto, Tomoko Morioka, Toshiyuki Morisawa, Shinji Mukohyama, Shigeo Nagano, Isao Naito, Kouji Nakamura, Hiroyuki Nakano, Kenichi Nakao, Shinichi Nakasuka, Yoshinori Nakayama, Erina Nishida, Kazutaka Nishiyama, Atsushi Nishizawa, Yoshito Niwa, Taiga Noumi, Yoshiyuki Obuchi, Masatake Ohashi, Naoko Ohishi, Masashi Ohkawa, Norio Okada, Kouji Onozato, Kenichi Oohara, Norichika Sago, Motoyuki Saijo, Masaaki Sakagami, Shihori Sakata, Misao Sasaki, Takashi Sato, Masaru Shibata, Hisaaki Shinkai, Kentaro Somiya, Hajime Sotani, Naoshi Sugiyama, Yudai Suwa, Rieko Suzuki, Hideyuki Tagoshi, Fuminobu Takahashi, Kakeru Takahashi, Keitaro Takahashi, Ryutaro Takahashi, Ryuichi Takahashi, Tadayuki Takahashi, Hirotaka Takahashi, Takamori Akiteru, Tadashi Takano, Keisuke Taniguchi, Atsushi Taruya, Hiroyuki Tashiro, Yasuo Torii, Morio Toyoshima, Shinji Tsujikawa, Yoshiki Tsunesada, Akitoshi Ueda, Ken-ichi Ueda, Masayoshi Utashima, Yaka Wakabayashi, Hiroshi Yamakawa, Kazuhiro Yamamoto, Toshitaka Yamazaki, Jun'ichi Yokoyama, Chul-Moon Yoo, Shijun Yoshida, Taizoh Yoshino

CLASSICAL AND QUANTUM GRAVITY　26　(9)　2009/05

DOI： 10.1088/0264-9381/26/9/094019 　

ISSN： 0264-9381

eISSN： 1361-6382
Research and Development Status of a New Rotational Seismometer Based on the Flux Pinning Effect of a Superconductor Peer-reviewed

Akiteru Takamori, Akito Araya, Yuji Otake, Koji Ishidoshiro, Masaki Ando

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA　99　(2B)　1174-1180　2009/05

DOI： 10.1785/0120080087 　

ISSN： 0037-1106

eISSN： 1943-3573
The Japanese space gravitational wave antenna; DECIGO Peer-reviewed

S Kawamura, M Ando, T Nakamura, K Tsubono, T Tanaka, I Funaki, N Seto, K Numata, S Sato, K Ioka, N Kanda, T Takashima, K Agatsuma, T Akutsu, T Akutsu, K-s Aoyanagi, K Arai, Y Arase, A Araya, H Asada, Y Aso, T Chiba, T Ebisuzaki, M Enoki, Y Eriguchi, M-K Fujimoto, R Fujita, M Fukushima, T Futamase, K Ganzu, T Harada, T Hashimoto, K Hayama, W Hikida, Y Himemoto, H Hirabayashi, T Hiramatsu, F-L Hong, H Horisawa, M Hosokawa, K Ichiki, T Ikegami, K T Inoue, K Ishidoshiro, H Ishihara, T Ishikawa, H Ishizaki, H Ito, Y Itoh, S Kamagasako, N Kawashima, F Kawazoe, H Kirihara, N Kishimoto, K Kiuchi, S Kobayashi, K Kohri, H Koizumi, Y Kojima, K Kokeyama, W Kokuyama, K Kotake, Y Kozai, H Kudoh, H Kunimori, H Kuninaka, K Kuroda, K-i Maeda, H Matsuhara, Y Mino, O Miyakawa, S Miyoki, M Y Morimoto, T Morioka, T Morisawa, S Moriwaki, S Mukohyama, M Musha, S Nagano, I Naito, N Nakagawa, K Nakamura, H Nakano, K Nakao, S Nakasuka, Y Nakayama, E Nishida, K Nishiyama, A Nishizawa, Y Niwa, M Ohashi, N Ohishi, M Ohkawa, A Okutomi, K Onozato, K Oohara, N Sago, M Saijo, M Sakagami, S-i Sakai, S Sakata, M Sasaki, T Sato, M Shibata, H Shinkai, K Somiya, H Sotani, N Sugiyama, Y Suwa, H Tagoshi, K Takahashi, K Takahashi, T Takahashi, H Takahashi, R Takahashi, R Takahashi, A Takamori, T Takano, K Taniguchi, A Taruya, H Tashiro, M Tokuda, M Tokunari, M Toyoshima, S Tsujikawa, Y Tsunesada, K-i Ueda, M Utashima, H Yamakawa, K Yamamoto, T Yamazaki, J Yokoyama, C-M Yoo, S Yoshida, T Yoshino

Journal of Physics: Conference Series　120　(3)　032004-032004　2008/07/01

DOI： 10.1088/1742-6596/120/3/032004 　

ISSN： 1742-6588

eISSN： 1742-6596
A systematical veto by all monitor signals in a gravitational-wave detector Peer-reviewed

Koji Ishidoshiro, Masaki Ando, Kimio Tsubono, Nobuyuki Kanda, Hirotaka Takahashi

CLASSICAL AND QUANTUM GRAVITY　24　(19)　S405-S413　2007/10

DOI： 10.1088/0264-9381/24/19/S04 　

ISSN： 0264-9381

eISSN： 1361-6382
The Japanese space gravitational wave antenna - DECIGO Peer-reviewed

Seiji Kawamura, Takashi Nakamura, Masaki Ando, Naoki Seto, Kimio Tsubono, Kenji Numata, Ryuichi Takahashi, Shigeo Nagano, Takehiko Ishikawa, Mitsuru Musha, Ken-ichi Ueda, Takashi Sato, Mizuhiko Hosokawa, Kazuhiro Agatsuma, Tomotada Akutsu, Koh-suke Aoyanagi, Koji Arai, Akito Araya, Hideki Asada, Yoichi Aso, Takeshi Chiba, Toshikazu Ebisuzaki, Yoshiharu Eriguchi, Masa-Katsu Fujimoto, Mitsuhiro Fukushima, Toshifumi Futamase, Katsuhiko Ganzu, Tomohiro Harada, Tatsuaki Hashimoto, Kazuhiro Hayama, Wataru Hikida, Yoshiaki Himemoto, Hisashi Hirabayashi, Takashi Hiramatsu, Kiyotomo Ichiki, Takeshi Ikegami, Kaiki T. Inoue, Kunihito Ioka, Koji Ishidoshiro, Yousuke Itoh, Shogo Kamagasako, Nobuyuki Kanda, Nobuki Kawashima, Hiroyuki Kirihara, Kenta Kiuchi, Shiho Kobayashi, Kazunori Kohri, Yasufumi Kojima, Keiko Kokeyama, Yoshihide Kozai, Hideaki Kudoh, Hiroo Kunimori, Kazuaki Kuroda, Kei-ichi Maeda, Hideo Matsuhara, Yasushi Mino, Osamu Miyakawa, Shinji Miyoki, Hiromi Mizusawa, Toshiyuki Morisawa, Shinji Mukohyama, Isao Naito, Noriyasu Nakagawa, Kouji Nakamura, Hiroyuki Nakano, Atsushi Nishizawa, Yoshito Niwa, Choetsu Nozawa, Masatake Ohashi, Naoko Ohishi, Masashi Ohkawa, Akira Okutomi, Kenichi Oohara, Norichika Sago, Motoyuki Saijo, Masaaki Sakagami, Shihori Sakata, Misao Sasaki, Shuichi Sato, Masaru Shibata, Hisaaki Shinkai, Kentaro Somiya, Hajime Sotani, Naoshi Sugiyama, Hideyuki Tagoshi, Tadayuki Takahashi, Hirotaka Takahashi, Ryutaro Takahashi, Tadashi Takano, Takahiro Tanaka, Keisuke Taniguchi, Atsushi Taruya, Hiroyuki Tashiro, Masao Tokunari, Shinji Tsujikawa, Yoshiki Tsunesada, Kazuhiro Yamamoto, Toshitaka Yamazaki, Jun'ichi Yokoyama, Chul-Moon Yoo, Shijun Yoshida, Taizoh Yoshino

CLASSICAL AND QUANTUM GRAVITY　23　(8)　S125-S131　2006/04

DOI： 10.1088/0264-9381/23/8/S17 　

ISSN： 0264-9381

eISSN： 1361-6382
Systematic survey for monitor signals to reduce fake burst events in a gravitational-wave detector Peer-reviewed

Koji Ishidoshiro, Masaki Ando, Kimio Tsubono

Journal of Physics: Conference Series　32　(1)　23-28　2006/03/02
Publisher: Institute of Physics Publishing
DOI： 10.1088/1742-6596/32/1/005 　

ISSN： 1742-6596 1742-6588

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Misc. 2

ニュートリノは神の粒子か? − 神岡地下1000 mで進む0νββ発見への挑戦 −

飯田崇史, 尾﨑秀義, 石徹白晃治

高エネルギーニュース　39　(3)　99-109　2020/10/30
液体シンチレータ型検出器によるニュートリノ天文学・地球科学

石徹白晃治, 渡辺寛子, 竹本康浩

天文月報　113　(10)　610-619　2020/09

Presentations 55

Gamma-ray TES Applications for Rare Event Searches Invited

Koji Ishidoshiro

Merging High-Resolution X-ray Spectroscopy and Laboratory Astrophysics: Advancing Next-Generation Observational Technologies　2025/10/28
KamLAND-Zen Invited

石徹白晃治

Flavor Physics Workshop2025　2025/09/27
大型液体シンチレータ検出器で探る物質粒子の起源 Invited

石徹白晃治

学術変革「地下稀事象」領域研究会　2024/07/05
超伝導センサーによる180mTaの稀崩壊探

石徹白晃治

「量子で探る極稀事象・基礎物理」研究会　2025/07/10
二重β崩壊探索実験 Invited

石徹白晃治

学術変革(A) 「精密数値計算が切り拓く宇宙の量子物質科学」キックオフ研究会　2025/06/23
極稀現象探索による宇宙素粒子研究 Invited

石徹白晃治

TBN2025　2025/06/20
KamLANDとKERNELの現状 Invited

石徹白晃治

第10回「極低放射能技術」研究会　2025/03/07
KamiokaCryolab I: Overview and on-site preparation

日本物理学会 2024年春季大会プログラム　2024/03/21
Low temperature facitiles Invited

NEXT-Zen Spain-Japan workshop, Canfranc, Spain　2023/09/06
神岡での軽い暗黒物質探索

石徹白晃治

SMART2022　2022/12/17
New dark matter search at Kamioka Invited

Koji Ishidoshiro

Kashiwa Dark Matter symposium 2022　2022/12/01
神岡低放射能冷凍機 Invited

石徹白晃治

第８回極低放射能技術研究会　2022/11/25
超伝導センサーを用いた暗黒物質探索 Invited

石徹白晃治

超伝導エレクトロニクス(SCE)研究会　2022/11/15
Kinetic inductance detectors evaporated on CaF2 for astroparticle physics

Koji Ishidoshiro

IEEE NSS/MIC 2022　2022/11/08
KamLANDで探る地球、太陽と宇宙 Invited

石徹白晃治

宇宙線で繋ぐ文明・地球環境・太陽系・銀河,　2022/10/16
KamLANDによる前兆ニュートリノを用いた超新星アラームシステムの現状と展望

石徹白晃治

日本天文学会2022年秋季年会　2022/09/13
KamLAND2へ向けたRFSoCベースのフロントエンド電子回路開発 Invited

石徹白晃治

RCNP研究会「原子核実験の次世代データ収集システム基盤開発にむけて」　2022/05/16
低放射能希釈冷凍機と超伝導検出器 Invited

石徹白晃治

新学術「地下宇宙」2021年領域研究会　2021/05/19
Kinetic inductance detectors on fluoride crystal for spin-dependent dark matter search International-presentation

石徹白晃治

TAUP2019　2019/09/10
Kinetic inductance detectors on CaF2 for spin-dependent dark matter search International-presentation

ISHIDOSHIRO Koji

2019/07/25
panel 1 International-presentation Invited

石徹白晃治

SNEWS2.0　2019/06/16
Presupernova neutrino monitor at KamLAND International-presentation Invited

ISHIDOSHIRO Koji

2019/06/15
Nearby SNe with KamLAND International-presentation Invited

ISHIDOSHIRO Koji

Revealing the history of the universe with underground particle and nuclear research 2019　2019/03/09
Lumped element kinetic inductance detectors on CaF2 for neutrino-less double-beta decay and spin-dependent dark matter search International-presentation

ISHIDOSHIRO Koji

2019/02/21
KamLAND -近傍超新星爆発と電子回路-

石徹白晃治

第五回超新星ニュートリノ研究会　2019/01/07
Development of new front-end electronics for KamLAND2-Zen International-presentation

ISHIDOSHIRO Koji

2018/10/21
液体シンチレータとニュートリノ物理 Invited

石徹白晃治

SMART2018　2018/05/18
ニュートリノで探る宇宙・素粒子の謎

石徹白晃治

熊本工業高等専門学校出前授業　2018/02/09
KamLAND

石徹白晃治

第四回超新星ニュートリノ研究会　2018/01/09
0νββやダークマター探索に生かしたい！ Invited

石徹白晃治

TIAかけはし事業「簡単・便利な超伝導計測」研究会　2018/01/04
ニュートリノで予報する超新星爆発

石徹白晃治

仙台市天文台×東北大学大学院理学研究科公開サイエンス講座第4回「ニュートリノからさぐる宇宙の謎」　2017/12/10
無機結晶を基材とした超伝導検出器の開発 Invited

石徹白晃治

SMART2017　2017/11/12
無ニュートリノ２重ベータ崩壊及び軽い暗黒物質探索を目指した超伝導放射線検出器の開発

石徹白晃治

超伝導エレクトロニクス研究会　2017/10/04
ニュートリノによる宇宙素粒子物理学

石徹白晃治

広島大学宇宙科学センターセミナー　2017/07/18
超伝導ボロメータによる0νββ及び軽いDMの探索 Invited

石徹白晃治

2017年度CRC将来計画タウンミーティング　2017/06/24
ニュートリノによる宇宙素粒子物理学

石徹白晃治

国立天文台談話会 (第982回)　2017/06/23
超新星前兆ニュートリノ研究 Invited

石徹白晃治

新学術「地下素核研究」2017年領域研究会　2017/05/22
KamLAND International-presentation Invited

International workshop on ‘Supernova at Hyper-Kamiokande’　2017/02/13
pre-supernova neutrino and supernova alarm before collapse International-presentation

Symposium on "New development in astrophysics through multimessenger observations of gravitational wave sources"　2016/12/26
大型液体シンチレータ検出器による超新星ニュートリノ研究の可能性

天文学会 (2016年春季年会)　2016/03/14
Revealing the history of the universe with underground particle and nuclear research Invited

新学術領域研究「ニュートリノフロンティア」研究会2015　2015/12/01
Future Supernova neutrino experiments International-presentation

10th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region　2015/11/16
超新星ニュートリノの振動現象とフーリエ解析 Invited

SKE f2f meeting　2015/10/17
天体活動と超新星ニュートリノ Invited

重力波天体・地下素核研究・中性子星核物質, 新学術３領域合同シンポジウム「多面的アプローチで解きあかす宇宙と天体」　2015/07/24
Low-energy Neutrino Astrophysics in KamLAND

KEK physics seminar　2015/06/30
天体活動と重元素生成の解明へ向けた超新星ニュートリノ観測システムの高度化

「宇宙の歴史をひもとく地下素粒子原子核研究」第二回研究会　2015/05/15
液シン型検出器による超新星ニュートリノ研究の現状と展望

第一回超新星ニュートリノ研究会　2015/03/15
KamLAND-Zen International-presentation Invited

International Workshop on Double Beta Decay and Underground Science (DBD2014)　2014/10/05
超新星（前兆）ニュートリノ

「宇宙の歴史をひもとく地下素粒子原子核研究」第一回研究会　2014/08/23
Nearby supernovae with KamLAND International-presentation

2nd Symposium on 'Gravitational Wave Astronomy'　2014/01/13
KamLAND International-presentation Invited

14th International Workshop on Next generation Nucleon Decay and Neutrino Detectors　2013/11/11
Geo-neutrino measurements with KamLAND International-presentation

Goldschmidt2013　2013/08/26
Image capturing at KamLAND International-presentation

Muon and Neutrino Radiography 2013　2013/07/25
Cosmic Microwave Background Polarization Results from the QUIET Experiment International-presentation

12th Asia Pacific Physics Conference　2013/07/14
KamLANDによる超新星ニュートリノの研究

日本物理学会第68回年次大会　2013/03/26

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Research Projects 17

極稀事象で探る宇宙物質の起源と進化：新たな宇宙物質観創生のフロンティア

岸本康宏, 中竜大, 梅原さおり, 石徹白晃治, 佐藤亮介, 諏訪雄大, 風間慎吾, 竹内康雄, 関谷洋之

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 学術変革領域研究(A)

Institution: 東北大学

2024/04/01 - 2029/03/31
大型液体シンチレータ検出器で探る物質粒子の起源

石徹白晃治

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 学術変革領域研究(A)

Institution: 東北大学

2024/04/01 - 2029/03/31
神岡地下での軽い暗黒物質探索実験

石徹白晃治

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(A)

Institution: 東北大学

2024/04/01 - 2027/03/31
3次元超伝導検出器が切り拓く究極の宇宙素粒子実験

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Pioneering)

Category: Grant-in-Aid for Challenging Research (Pioneering)

Institution: Saitama University

2021/07 - 2025/03
超伝導ナノワイヤーで切り開く極軽量暗黒物質探索の新展開

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)

Category: Grant-in-Aid for Challenging Research (Exploratory)

Institution: Tohoku University

2022/06 - 2024/03
極低温技術による宇宙素粒子研究の高感度化 Competitive

吉田斉

System: 科学研究費助成事業

2019/06 - 2024/03
軽い暗黒物質探索を目指した超伝導検出器の開発 Competitive

石徹白晃治

System: 科学研究費助成事業

2019/04 - 2021/03
フッ化物結晶を用いた軽い暗黒物質の探索 Competitive

石徹白晃治

System: 科学研究費助成事業

2019/04 - 2020/03
Networking international underground laboratories for revealing the history of the universe

Inoue Kunio, Kishimoto Tadafumi, Ishidoshiro Koji, Takeuchi Yasuo, Yanagida Tsutomu

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Institution: Tohoku University

2015/11/06 - 2019/03/31

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International collaboration among world underground laboratories has been developed aiming at the large synergies of sharing the common technologies. Concerning the search for dark matter in which international unification is occurring, Japanese team decided to join the foreign project bringing the technologies developed in this innovative area. Concerning the directional measurement of dark matter, Kamioka underground laboratory serves as a world-wide hub of its developmental efforts. As for the future innovative technology of scintillating bolometers, scintillation crystal technology in our area and bolometer technology in Korea can be combined and cooperative development has been started. These cooperative work on the basis of common technologies will secure the continuous leadership in the field of underground particle and nuclear research.
Revealing the history of the universe with underground particle and nuclear research

Inoue Kunio, Yoshida Sei, Suzuki Yoichiro, Nakahata Masayuki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Institution: Tohoku University

2014/07/10 - 2019/03/31

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In this activity, the experimental projects located at Kamioka underground have cooperated on the common basis of ultra-low radioactivity techniques and science among them has been bridged by particle cosmology theories aiming at revealing the history of the universe. We have successfully promoted varieties of close collaborations through the frequent operational/executive meetings. At the same time, the newly defined our science area, originally spread in diverse fields, has organized common technologies and interests. Consequently, mobility and career path of young researchers have been increased. We have held many domestic/international conferences with new events such as tutorial and panel discussion and we developed many collaborations and interdisciplinary researches within/beyond our innovative area.
近傍天体ニュートリノ包括的観測体制の構築と天体活動の研究 Competitive

石徹白晃治

System: 科学研究費助成事業

2014/07 - 2019/03
超伝導ボロメータ技術を用いた高感度マヨラナニュートリノ探索 Competitive

石徹白晃治

System: 科学研究費助成事業

2016/04 - 2018/03
超伝導検出器を用いた軽い暗黒物質探索 Competitive

石徹白晃治

System: 科学研究費助成事業

2016/04 - 2018/03
超高感度マヨナラニュートリノ探索 Competitive

石徹白晃治

System: 科学研究費助成事業

2013/04 - 2016/03
KamLANDによる近傍超新星爆発の観測 Competitive

石徹白晃治

System: 科学研究費助成事業

2013/04 - 2015/03
重力波実験技術を応用した新しいニュートリノ質量測定方法の開拓 Competitive

石徹白晃治

System: 科学研究費助成事業

2013/04 - 2015/03
磁気浮上を利用した低周波重力波検出実験

石徹白晃治

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 特別研究員奨励費

Institution: 東京大学

2008 - 2009

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本年度は、前半に超伝導磁気浮上型ねじれアンテナのロトタイプを開発し、その有効性-実現可能性などを実験的に検証した。その結果、試験質量を回転方向に対して非常に自由(ダンピング定数で1.2±0.7×10^<-8>Nms/rad,バネ定数3.6±2.1×10^<-7>Nm/radで)に支持することに成功した。また、0.2Hzで2×10^<-9>1/rHzという重力波振幅等価雑音の実現にも成功した。この雑音レベルは、他の周波数帯域と比べると必ずしも良くないが、0.1-1Hz帯域では世界成功レベルである。さらに、年度後半に簡易観測運転を行い、観測データを用いて電波パルサーPSR J2144-3933起源の連続重力波と初期宇宙に起源を持つ原始重力波に対する上限値を評価した。特に、このパルサーは、最長の周期8.51秒を持ち、標準のパルサー理論を超える性質を持っている。このようなパルサー起源の重力波探索は、異常パルサーの研究の面からも興味深い。上限値評価の結果、パルサー起源の連続重力波の振幅に対して2.8×10^<-8>の頻度主義的上限値と8.4×10^<-10>のベイズ的な上限値を信頼度95%で得た。原始重力波に対しては、宇宙の臨界密度で規格化された重力波のエネルギ-密度Ωと規格化されたハッブル定数hに対してΩh<8.1x10^<17>の制限を信頼度95%で得た。これらの上限値は他の周波数帯域で既に得られた値と比較して、数桁大きい値であるが、0.1-1Hz帯域の制限は初めてのものであり、既存の上限値と相補的な情報を我々に与えてくれるものである。

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