Undoped CsI calorimeter for the K0L → π0vv̄ experiment at KEK-PS

M. Doroshenko; K. Abe; J. K. Ahn; Y. Akune; V. Baranov; Y. Fujioka; Y. B. Hsiung; T. Ikei; T. Inagaki; S. Ishibashi; H. Ishii; T. Iwata; S. Kobayashi; S. Komatsu; T. K. Komatsubara; A. Kurilin; E. Kuzmin; A. Lednev; H. S. Lee; S. Y. Lee; G. Y. Lim; T. Matsumura; T. Mizuhashi; A. Moisseenko; T. Morimoto; T. Nakano; N. Nishi; J. Nix; T. Nomura; T. Oba; H. Okuno; K. Omata; G. N. Perdue; S. Perov; S. Podolsky; S. Porokhovoy; K. Sakashita; N. Sasao; H. Sato; T. Sato; M. Sekimoto; T. Shinkawa; Y. Sugaya; A. Sugiyama; T. Sumida; Y. Tajima; Z. Tsamalaidze; T. Tsukamoto; Y. Wah; H. Watanabe; M. Yamaga; T. Yamanaka; H. Y. Yoshida; Y. Yoshimura

doi:10.1016/j.nima.2005.02.007

Undoped CsI calorimeter for the K⁰_L → π⁰vv̄ experiment at KEK-PS

M. Doroshenko, K. Abe, J. K. Ahn, Y. Akune, V. Baranov, Y. Fujioka, Y. B. Hsiung, T. Ikei, T. Inagaki, S. Ishibashi, H. Ishii, T. Iwata, S. Kobayashi, S. Komatsu, T. K. Komatsubara, A. Kurilin, E. Kuzmin, A. Lednev, H. S. Lee, S. Y. LeeG. Y. Lim, T. Matsumura, T. Mizuhashi, A. Moisseenko, T. Morimoto, T. Nakano, N. Nishi, J. Nix, T. Nomura, T. Oba, H. Okuno, K. Omata, G. N. Perdue, S. Perov, S. Podolsky, S. Porokhovoy, K. Sakashita, N. Sasao, H. Sato, T. Sato, M. Sekimoto, T. Shinkawa, Y. Sugaya, A. Sugiyama, T. Sumida, Y. Tajima, Z. Tsamalaidze, T. Tsukamoto, Y. Wah, H. Watanabe, M. Yamaga, T. Yamanaka, H. Y. Yoshida, Y. Yoshimura

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

24 Citations (Scopus)

Abstract

An electromagnetic calorimeter consisting of 576 undoped CsI crystals has been used to search for the KL0→π0νν̄ decay at the KEK 12-GeV proton synchrotron (E391a). The calorimeter is placed in a vacuum of lower than 10^-1 Pa. Special energy and timing calibrations have been performed. The energy calibration started from a check of the linearity for nine sample crystals using an electron beam. Then, after mounting all crystals in the E391a detector, we made an in situ calibration of the energy by using cosmic ray and punch-through muons. The gain constants obtained from both muons agree with each other with an accuracy of 2% (σ). They were further refined by using γγ samples from π⁰'s produced off an aluminum plate (5-mm thick) hit by neutral beam particles. Using the final gain constants, we obtained a KL0 mass resolution of 4.3 MeV/c² (σ) for the KL0→π0π0π0 decay. Also, using the timing constants measured for cosmic rays, we obtained a resolution of 0.51 ns (σ) for the timing difference among six γ's in the KL0→π0π0π0 decay.

Original language	English
Pages (from-to)	278-295
Number of pages	18
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	545
Issue number	1-2
DOIs	https://doi.org/10.1016/j.nima.2005.02.007
Publication status	Published - 2005 Jun 11
Externally published	Yes

Bibliographical note

Funding Information:
The authors express their sincere thanks to the operating staff of the 12-GeV KEK proton synchrotron and the beam channel group for providing us a good quality neutral beam to the E391a detector. This work has been partly supported by a Grant-in-Aid from the Ministry of Education, Culture, Sports, Science and Technology in Japan and by the Japan Society for the Promotion of Science (JSPS). One of us (M.D.) acknowledges the receipt of the Japanese Government Scholarship (Monbukagakusho; MEXT) during this work.

Keywords

CsI calorimeter
Energy calibration
K decay
Timing calibration

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

Access to Document

10.1016/j.nima.2005.02.007

Cite this

Doroshenko, M., Abe, K., Ahn, J. K., Akune, Y., Baranov, V., Fujioka, Y., Hsiung, Y. B., Ikei, T., Inagaki, T., Ishibashi, S., Ishii, H., Iwata, T., Kobayashi, S., Komatsu, S., Komatsubara, T. K., Kurilin, A., Kuzmin, E., Lednev, A., Lee, H. S., ... Yoshimura, Y. (2005). Undoped CsI calorimeter for the K⁰_L → π⁰vv̄ experiment at KEK-PS. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 545(1-2), 278-295. https://doi.org/10.1016/j.nima.2005.02.007

Doroshenko, M, Abe, K, Ahn, JK, Akune, Y, Baranov, V, Fujioka, Y, Hsiung, YB, Ikei, T, Inagaki, T, Ishibashi, S, Ishii, H, Iwata, T, Kobayashi, S, Komatsu, S, Komatsubara, TK, Kurilin, A, Kuzmin, E, Lednev, A, Lee, HS, Lee, SY, Lim, GY, Matsumura, T, Mizuhashi, T, Moisseenko, A, Morimoto, T, Nakano, T, Nishi, N, Nix, J, Nomura, T, Oba, T, Okuno, H, Omata, K, Perdue, GN, Perov, S, Podolsky, S, Porokhovoy, S, Sakashita, K, Sasao, N, Sato, H, Sato, T, Sekimoto, M, Shinkawa, T, Sugaya, Y, Sugiyama, A, Sumida, T, Tajima, Y, Tsamalaidze, Z, Tsukamoto, T, Wah, Y, Watanabe, H, Yamaga, M, Yamanaka, T, Yoshida, HY & Yoshimura, Y 2005, 'Undoped CsI calorimeter for the K⁰_L → π⁰vv̄ experiment at KEK-PS', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 545, no. 1-2, pp. 278-295. https://doi.org/10.1016/j.nima.2005.02.007

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title = "Undoped CsI calorimeter for the K0L → π0v{\=v} experiment at KEK-PS",

abstract = "An electromagnetic calorimeter consisting of 576 undoped CsI crystals has been used to search for the KL0→π0ν{\=ν} decay at the KEK 12-GeV proton synchrotron (E391a). The calorimeter is placed in a vacuum of lower than 10-1 Pa. Special energy and timing calibrations have been performed. The energy calibration started from a check of the linearity for nine sample crystals using an electron beam. Then, after mounting all crystals in the E391a detector, we made an in situ calibration of the energy by using cosmic ray and punch-through muons. The gain constants obtained from both muons agree with each other with an accuracy of 2% (σ). They were further refined by using γγ samples from π0's produced off an aluminum plate (5-mm thick) hit by neutral beam particles. Using the final gain constants, we obtained a KL0 mass resolution of 4.3 MeV/c2 (σ) for the KL0→π0π0π0 decay. Also, using the timing constants measured for cosmic rays, we obtained a resolution of 0.51 ns (σ) for the timing difference among six γ's in the KL0→π0π0π0 decay.",

keywords = "CsI calorimeter, Energy calibration, K decay, Timing calibration",

author = "M. Doroshenko and K. Abe and Ahn, {J. K.} and Y. Akune and V. Baranov and Y. Fujioka and Hsiung, {Y. B.} and T. Ikei and T. Inagaki and S. Ishibashi and H. Ishii and T. Iwata and S. Kobayashi and S. Komatsu and Komatsubara, {T. K.} and A. Kurilin and E. Kuzmin and A. Lednev and Lee, {H. S.} and Lee, {S. Y.} and Lim, {G. Y.} and T. Matsumura and T. Mizuhashi and A. Moisseenko and T. Morimoto and T. Nakano and N. Nishi and J. Nix and T. Nomura and T. Oba and H. Okuno and K. Omata and Perdue, {G. N.} and S. Perov and S. Podolsky and S. Porokhovoy and K. Sakashita and N. Sasao and H. Sato and T. Sato and M. Sekimoto and T. Shinkawa and Y. Sugaya and A. Sugiyama and T. Sumida and Y. Tajima and Z. Tsamalaidze and T. Tsukamoto and Y. Wah and H. Watanabe and M. Yamaga and T. Yamanaka and Yoshida, {H. Y.} and Y. Yoshimura",

note = "Funding Information: The authors express their sincere thanks to the operating staff of the 12-GeV KEK proton synchrotron and the beam channel group for providing us a good quality neutral beam to the E391a detector. This work has been partly supported by a Grant-in-Aid from the Ministry of Education, Culture, Sports, Science and Technology in Japan and by the Japan Society for the Promotion of Science (JSPS). One of us (M.D.) acknowledges the receipt of the Japanese Government Scholarship (Monbukagakusho; MEXT) during this work.",

year = "2005",

month = jun,

day = "11",

doi = "10.1016/j.nima.2005.02.007",

language = "English",

volume = "545",

pages = "278--295",

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

issn = "0168-9002",

publisher = "Elsevier B.V.",

number = "1-2",

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TY - JOUR

T1 - Undoped CsI calorimeter for the K0L → π0vv̄ experiment at KEK-PS

AU - Doroshenko, M.

AU - Abe, K.

AU - Ahn, J. K.

AU - Akune, Y.

AU - Baranov, V.

AU - Fujioka, Y.

AU - Hsiung, Y. B.

AU - Ikei, T.

AU - Inagaki, T.

AU - Ishibashi, S.

AU - Ishii, H.

AU - Iwata, T.

AU - Kobayashi, S.

AU - Komatsu, S.

AU - Komatsubara, T. K.

AU - Kurilin, A.

AU - Kuzmin, E.

AU - Lednev, A.

AU - Lee, H. S.

AU - Lee, S. Y.

AU - Lim, G. Y.

AU - Matsumura, T.

AU - Mizuhashi, T.

AU - Moisseenko, A.

AU - Morimoto, T.

AU - Nakano, T.

AU - Nishi, N.

AU - Nix, J.

AU - Nomura, T.

AU - Oba, T.

AU - Okuno, H.

AU - Omata, K.

AU - Perdue, G. N.

AU - Perov, S.

AU - Podolsky, S.

AU - Porokhovoy, S.

AU - Sakashita, K.

AU - Sasao, N.

AU - Sato, H.

AU - Sato, T.

AU - Sekimoto, M.

AU - Shinkawa, T.

AU - Sugaya, Y.

AU - Sugiyama, A.

AU - Sumida, T.

AU - Tajima, Y.

AU - Tsamalaidze, Z.

AU - Tsukamoto, T.

AU - Wah, Y.

AU - Watanabe, H.

AU - Yamaga, M.

AU - Yamanaka, T.

AU - Yoshida, H. Y.

AU - Yoshimura, Y.

N1 - Funding Information: The authors express their sincere thanks to the operating staff of the 12-GeV KEK proton synchrotron and the beam channel group for providing us a good quality neutral beam to the E391a detector. This work has been partly supported by a Grant-in-Aid from the Ministry of Education, Culture, Sports, Science and Technology in Japan and by the Japan Society for the Promotion of Science (JSPS). One of us (M.D.) acknowledges the receipt of the Japanese Government Scholarship (Monbukagakusho; MEXT) during this work.

PY - 2005/6/11

Y1 - 2005/6/11

N2 - An electromagnetic calorimeter consisting of 576 undoped CsI crystals has been used to search for the KL0→π0νν̄ decay at the KEK 12-GeV proton synchrotron (E391a). The calorimeter is placed in a vacuum of lower than 10-1 Pa. Special energy and timing calibrations have been performed. The energy calibration started from a check of the linearity for nine sample crystals using an electron beam. Then, after mounting all crystals in the E391a detector, we made an in situ calibration of the energy by using cosmic ray and punch-through muons. The gain constants obtained from both muons agree with each other with an accuracy of 2% (σ). They were further refined by using γγ samples from π0's produced off an aluminum plate (5-mm thick) hit by neutral beam particles. Using the final gain constants, we obtained a KL0 mass resolution of 4.3 MeV/c2 (σ) for the KL0→π0π0π0 decay. Also, using the timing constants measured for cosmic rays, we obtained a resolution of 0.51 ns (σ) for the timing difference among six γ's in the KL0→π0π0π0 decay.

AB - An electromagnetic calorimeter consisting of 576 undoped CsI crystals has been used to search for the KL0→π0νν̄ decay at the KEK 12-GeV proton synchrotron (E391a). The calorimeter is placed in a vacuum of lower than 10-1 Pa. Special energy and timing calibrations have been performed. The energy calibration started from a check of the linearity for nine sample crystals using an electron beam. Then, after mounting all crystals in the E391a detector, we made an in situ calibration of the energy by using cosmic ray and punch-through muons. The gain constants obtained from both muons agree with each other with an accuracy of 2% (σ). They were further refined by using γγ samples from π0's produced off an aluminum plate (5-mm thick) hit by neutral beam particles. Using the final gain constants, we obtained a KL0 mass resolution of 4.3 MeV/c2 (σ) for the KL0→π0π0π0 decay. Also, using the timing constants measured for cosmic rays, we obtained a resolution of 0.51 ns (σ) for the timing difference among six γ's in the KL0→π0π0π0 decay.

KW - CsI calorimeter

KW - Energy calibration

KW - K decay

KW - Timing calibration

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DO - 10.1016/j.nima.2005.02.007

M3 - Article

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EP - 295

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

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