Pulse shape discrimination of photons and neutrons in the energy range of 0.1 – 2 GeV with the KOTO un-doped CsI calorimeter

Y. Sugiyama; J. K. Ahn; S. Banno; B. Beckford; M. Campbell; S. H. Chen; J. Comfort; Y. T. Duh; T. Hineno; Y. B. Hsiung; M. Hutcheson; E. Iwai; I. Kamiji; N. Kawasaki; E. J. Kim; J. L. Kim; Y. J. Kim; J. W. Ko; T. K. Komatsubara; A. S. Kurilin; J. W. Lee; S. K. Lee; G. Y. Lim; C. Lin; Q. Lin; Y. Luo; J. Ma; Y. Maeda; T. Masuda; T. Matsumura; D. Mcfarland; R. Murayama; D. Naito; K. Nakagiri; Y. Nakaya; H. Nanjo; T. Nomura; Y. Odani; J. C. Redeker; Y. D. Ri; N. Sasao; K. Sato; S. Seki; T. Shimogawa; T. Shinkawa; S. Shinohara; K. Shiomi; S. Su; S. Suzuki; Y. Tajima; G. Takahashi; Y. Takashima; M. Tecchio; M. Togawa; Y. C. Tung; Y. W. Wah; H. Watanabe; N. Whallon; J. K. Woo; J. Xu; T. Yamanaka; Y. Yanagida; H. Y. Yoshida; H. Yoshimoto

doi:10.1016/j.nima.2020.164825

Pulse shape discrimination of photons and neutrons in the energy range of 0.1 – 2 GeV with the KOTO un-doped CsI calorimeter

Y. Sugiyama^*
, J. K. Ahn
, S. Banno
, B. Beckford
, M. Campbell
, S. H. Chen
, J. Comfort
, Y. T. Duh
, T. Hineno
, Y. B. Hsiung
, M. Hutcheson
, E. Iwai
, I. Kamiji
, N. Kawasaki
, E. J. Kim
, J. L. Kim
, Y. J. Kim
, J. W. Ko
, T. K. Komatsubara
, A. S. Kurilin

J. W. Lee, S. K. Lee, G. Y. Lim, C. Lin, Q. Lin, Y. Luo, J. Ma, Y. Maeda, T. Masuda, T. Matsumura, D. Mcfarland, R. Murayama, D. Naito, K. Nakagiri, Y. Nakaya, H. Nanjo, T. Nomura, Y. Odani, J. C. Redeker, Y. D. Ri, N. Sasao, K. Sato, S. Seki, T. Shimogawa, T. Shinkawa, S. Shinohara, K. Shiomi, S. Su, S. Suzuki, Y. Tajima, G. Takahashi, Y. Takashima, M. Tecchio, M. Togawa, Y. C. Tung, Y. W. Wah, H. Watanabe, N. Whallon, J. K. Woo, J. Xu, T. Yamanaka, Y. Yanagida, H. Y. Yoshida, H. Yoshimoto

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A pulse shape difference between photons and neutrons was observed in the output signals of scintillation light from the un-doped CsI calorimeter of the KOTO experiment for the K_L→π⁰νν̄ decay. We developed a discrimination method to reject neutrons and to accept photons in the deposited energy range from 0.1 to 2 GeV. The method rejects 67% of neutron-induced single hadronic clusters and 86% of neutron-induced two-cluster events while keeping more than 90% of photon-induced single electromagnetic clusters and two-photon events.

Original language	English
Article number	164825
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	987
DOIs	https://doi.org/10.1016/j.nima.2020.164825
Publication status	Published - 2021 Jan 21

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Calorimeter
CsI crystal
Pulse shape discrimination
Rare kaon decay
Waveform analysis

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2020.164825

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Sugiyama, Y., Ahn, J. K., Banno, S., Beckford, B., Campbell, M., Chen, S. H., Comfort, J., Duh, Y. T., Hineno, T., Hsiung, Y. B., Hutcheson, M., Iwai, E., Kamiji, I., Kawasaki, N., Kim, E. J., Kim, J. L., Kim, Y. J., Ko, J. W., Komatsubara, T. K., ... Yoshimoto, H. (2021). Pulse shape discrimination of photons and neutrons in the energy range of 0.1 – 2 GeV with the KOTO un-doped CsI calorimeter. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 987, Article 164825. https://doi.org/10.1016/j.nima.2020.164825

Pulse shape discrimination of photons and neutrons in the energy range of 0.1 – 2 GeV with the KOTO un-doped CsI calorimeter. / Sugiyama, Y.; Ahn, J. K.; Banno, S. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 987, 164825, 21.01.2021.

Research output: Contribution to journal › Article › peer-review

Sugiyama, Y, Ahn, JK, Banno, S, Beckford, B, Campbell, M, Chen, SH, Comfort, J, Duh, YT, Hineno, T, Hsiung, YB, Hutcheson, M, Iwai, E, Kamiji, I, Kawasaki, N, Kim, EJ, Kim, JL, Kim, YJ, Ko, JW, Komatsubara, TK, Kurilin, AS, Lee, JW, Lee, SK, Lim, GY, Lin, C, Lin, Q, Luo, Y, Ma, J, Maeda, Y, Masuda, T, Matsumura, T, Mcfarland, D, Murayama, R, Naito, D, Nakagiri, K, Nakaya, Y, Nanjo, H, Nomura, T, Odani, Y, Redeker, JC, Ri, YD, Sasao, N, Sato, K, Seki, S, Shimogawa, T, Shinkawa, T, Shinohara, S, Shiomi, K, Su, S, Suzuki, S, Tajima, Y, Takahashi, G, Takashima, Y, Tecchio, M, Togawa, M, Tung, YC, Wah, YW, Watanabe, H, Whallon, N, Woo, JK, Xu, J, Yamanaka, T, Yanagida, Y, Yoshida, HY & Yoshimoto, H 2021, 'Pulse shape discrimination of photons and neutrons in the energy range of 0.1 – 2 GeV with the KOTO un-doped CsI calorimeter', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 987, 164825. https://doi.org/10.1016/j.nima.2020.164825

Sugiyama Y, Ahn JK, Banno S, Beckford B, Campbell M, Chen SH et al. Pulse shape discrimination of photons and neutrons in the energy range of 0.1 – 2 GeV with the KOTO un-doped CsI calorimeter. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2021 Jan 21;987:164825. doi: 10.1016/j.nima.2020.164825

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title = "Pulse shape discrimination of photons and neutrons in the energy range of 0.1 – 2 GeV with the KOTO un-doped CsI calorimeter",

abstract = "A pulse shape difference between photons and neutrons was observed in the output signals of scintillation light from the un-doped CsI calorimeter of the KOTO experiment for the KL→π0ν{\=ν} decay. We developed a discrimination method to reject neutrons and to accept photons in the deposited energy range from 0.1 to 2 GeV. The method rejects 67\% of neutron-induced single hadronic clusters and 86\% of neutron-induced two-cluster events while keeping more than 90\% of photon-induced single electromagnetic clusters and two-photon events.",

keywords = "Calorimeter, CsI crystal, Pulse shape discrimination, Rare kaon decay, Waveform analysis",

author = "Y. Sugiyama and Ahn, \{J. K.\} and S. Banno and B. Beckford and M. Campbell and Chen, \{S. H.\} and J. Comfort and Duh, \{Y. T.\} and T. Hineno and Hsiung, \{Y. B.\} and M. Hutcheson and E. Iwai and I. Kamiji and N. Kawasaki and Kim, \{E. J.\} and Kim, \{J. L.\} and Kim, \{Y. J.\} and Ko, \{J. W.\} and Komatsubara, \{T. K.\} and Kurilin, \{A. S.\} and Lee, \{J. W.\} and Lee, \{S. K.\} and Lim, \{G. Y.\} and C. Lin and Q. Lin and Y. Luo and J. Ma and Y. Maeda and T. Masuda and T. Matsumura and D. Mcfarland and R. Murayama and D. Naito and K. Nakagiri and Y. Nakaya and H. Nanjo and T. Nomura and Y. Odani and Redeker, \{J. C.\} and Ri, \{Y. D.\} and N. Sasao and K. Sato and S. Seki and T. Shimogawa and T. Shinkawa and S. Shinohara and K. Shiomi and S. Su and S. Suzuki and Y. Tajima and G. Takahashi and Y. Takashima and M. Tecchio and M. Togawa and Tung, \{Y. C.\} and Wah, \{Y. W.\} and H. Watanabe and N. Whallon and Woo, \{J. K.\} and J. Xu and T. Yamanaka and Y. Yanagida and Yoshida, \{H. Y.\} and H. Yoshimoto",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2021",

month = jan,

day = "21",

doi = "10.1016/j.nima.2020.164825",

language = "English",

volume = "987",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Pulse shape discrimination of photons and neutrons in the energy range of 0.1 – 2 GeV with the KOTO un-doped CsI calorimeter

AU - Sugiyama, Y.

AU - Ahn, J. K.

AU - Banno, S.

AU - Beckford, B.

AU - Campbell, M.

AU - Chen, S. H.

AU - Comfort, J.

AU - Duh, Y. T.

AU - Hineno, T.

AU - Hsiung, Y. B.

AU - Hutcheson, M.

AU - Iwai, E.

AU - Kamiji, I.

AU - Kawasaki, N.

AU - Kim, E. J.

AU - Kim, J. L.

AU - Kim, Y. J.

AU - Ko, J. W.

AU - Komatsubara, T. K.

AU - Kurilin, A. S.

AU - Lee, J. W.

AU - Lee, S. K.

AU - Lim, G. Y.

AU - Lin, C.

AU - Lin, Q.

AU - Luo, Y.

AU - Ma, J.

AU - Maeda, Y.

AU - Masuda, T.

AU - Matsumura, T.

AU - Mcfarland, D.

AU - Murayama, R.

AU - Naito, D.

AU - Nakagiri, K.

AU - Nakaya, Y.

AU - Nanjo, H.

AU - Nomura, T.

AU - Odani, Y.

AU - Redeker, J. C.

AU - Ri, Y. D.

AU - Sasao, N.

AU - Sato, K.

AU - Seki, S.

AU - Shimogawa, T.

AU - Shinkawa, T.

AU - Shinohara, S.

AU - Shiomi, K.

AU - Su, S.

AU - Suzuki, S.

AU - Tajima, Y.

AU - Takahashi, G.

AU - Takashima, Y.

AU - Tecchio, M.

AU - Togawa, M.

AU - Tung, Y. C.

AU - Wah, Y. W.

AU - Watanabe, H.

AU - Whallon, N.

AU - Woo, J. K.

AU - Xu, J.

AU - Yamanaka, T.

AU - Yanagida, Y.

AU - Yoshida, H. Y.

AU - Yoshimoto, H.

PY - 2021/1/21

Y1 - 2021/1/21

N2 - A pulse shape difference between photons and neutrons was observed in the output signals of scintillation light from the un-doped CsI calorimeter of the KOTO experiment for the KL→π0νν̄ decay. We developed a discrimination method to reject neutrons and to accept photons in the deposited energy range from 0.1 to 2 GeV. The method rejects 67% of neutron-induced single hadronic clusters and 86% of neutron-induced two-cluster events while keeping more than 90% of photon-induced single electromagnetic clusters and two-photon events.

AB - A pulse shape difference between photons and neutrons was observed in the output signals of scintillation light from the un-doped CsI calorimeter of the KOTO experiment for the KL→π0νν̄ decay. We developed a discrimination method to reject neutrons and to accept photons in the deposited energy range from 0.1 to 2 GeV. The method rejects 67% of neutron-induced single hadronic clusters and 86% of neutron-induced two-cluster events while keeping more than 90% of photon-induced single electromagnetic clusters and two-photon events.

KW - Calorimeter

KW - CsI crystal

KW - Pulse shape discrimination

KW - Rare kaon decay

KW - Waveform analysis

UR - https://www.scopus.com/pages/publications/85096177904

U2 - 10.1016/j.nima.2020.164825

DO - 10.1016/j.nima.2020.164825

M3 - Article

AN - SCOPUS:85096177904

SN - 0168-9002

VL - 987

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

M1 - 164825

ER -

Pulse shape discrimination of photons and neutrons in the energy range of 0.1 – 2 GeV with the KOTO un-doped CsI calorimeter

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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