Performance study of a prototype pure CsI calorimeter for the KOTO experiment

E. Iwai; J. W. Lee; T. Masuda; D. McFarland; Y. Nakaya; Y. D. Ri; K. Sato; K. Shiomi; Y. Sugiyama; Y. Tajima; M. Tecchio; M. Togawa; Y. C. Tung; T. Yamanaka

doi:10.1016/j.nima.2015.02.046

Performance study of a prototype pure CsI calorimeter for the KOTO experiment

E. Iwai
, J. W. Lee
, T. Masuda
, D. McFarland
, Y. Nakaya
, Y. D. Ri
, K. Sato
, K. Shiomi
, Y. Sugiyama
, Y. Tajima
, M. Tecchio
, M. Togawa
, Y. C. Tung
, T. Yamanaka

Research Institute for Interdisciplinary Science

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

8 Citations (Scopus)

Abstract

The performance of the CsI electromagnetic calorimeter to be used for the J-PARC E14 KOTO experiment for a rare decay K_L → π⁰ν ν ¯ was studied by using a positron beam from an accelerator. The energy, timing, and position resolutions for energies up to 800 MeV were measured. We also developed a new method to reconstruct the incident angle of photons based on the shower shape recorded with the calorimeter, and evaluated the method to suppress possible backgrounds for K_L → π⁰ν ν ¯ decay signals.

Original language	English
Pages (from-to)	135-141
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	786
DOIs	https://doi.org/10.1016/j.nima.2015.02.046
Publication status	Published - Jun 21 2015

Keywords

Electromagnetic calorimeter
K → πν ν ¯
KOTO experiment
Pure CsI

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2015.02.046

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Iwai, E., Lee, J. W., Masuda, T., McFarland, D., Nakaya, Y., Ri, Y. D., Sato, K., Shiomi, K., Sugiyama, Y., Tajima, Y., Tecchio, M., Togawa, M., Tung, Y. C., & Yamanaka, T. (2015). Performance study of a prototype pure CsI calorimeter for the KOTO experiment. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 786, 135-141. https://doi.org/10.1016/j.nima.2015.02.046

Iwai, E, Lee, JW, Masuda, T, McFarland, D, Nakaya, Y, Ri, YD, Sato, K, Shiomi, K, Sugiyama, Y, Tajima, Y, Tecchio, M, Togawa, M, Tung, YC & Yamanaka, T 2015, 'Performance study of a prototype pure CsI calorimeter for the KOTO experiment', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 786, pp. 135-141. https://doi.org/10.1016/j.nima.2015.02.046

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title = "Performance study of a prototype pure CsI calorimeter for the KOTO experiment",

abstract = "The performance of the CsI electromagnetic calorimeter to be used for the J-PARC E14 KOTO experiment for a rare decay KL → π0ν ν ¯ was studied by using a positron beam from an accelerator. The energy, timing, and position resolutions for energies up to 800 MeV were measured. We also developed a new method to reconstruct the incident angle of photons based on the shower shape recorded with the calorimeter, and evaluated the method to suppress possible backgrounds for KL → π0ν ν ¯ decay signals.",

keywords = "Electromagnetic calorimeter, K → πν ν ¯, KOTO experiment, Pure CsI",

author = "E. Iwai and Lee, \{J. W.\} and T. Masuda and D. McFarland and Y. Nakaya and Ri, \{Y. D.\} and K. Sato and K. Shiomi and Y. Sugiyama and Y. Tajima and M. Tecchio and M. Togawa and Tung, \{Y. C.\} and T. Yamanaka",

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doi = "10.1016/j.nima.2015.02.046",

language = "English",

volume = "786",

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T1 - Performance study of a prototype pure CsI calorimeter for the KOTO experiment

AU - Iwai, E.

AU - Lee, J. W.

AU - Masuda, T.

AU - McFarland, D.

AU - Nakaya, Y.

AU - Ri, Y. D.

AU - Sato, K.

AU - Shiomi, K.

AU - Sugiyama, Y.

AU - Tajima, Y.

AU - Tecchio, M.

AU - Togawa, M.

AU - Tung, Y. C.

AU - Yamanaka, T.

PY - 2015/6/21

Y1 - 2015/6/21

N2 - The performance of the CsI electromagnetic calorimeter to be used for the J-PARC E14 KOTO experiment for a rare decay KL → π0ν ν ¯ was studied by using a positron beam from an accelerator. The energy, timing, and position resolutions for energies up to 800 MeV were measured. We also developed a new method to reconstruct the incident angle of photons based on the shower shape recorded with the calorimeter, and evaluated the method to suppress possible backgrounds for KL → π0ν ν ¯ decay signals.

AB - The performance of the CsI electromagnetic calorimeter to be used for the J-PARC E14 KOTO experiment for a rare decay KL → π0ν ν ¯ was studied by using a positron beam from an accelerator. The energy, timing, and position resolutions for energies up to 800 MeV were measured. We also developed a new method to reconstruct the incident angle of photons based on the shower shape recorded with the calorimeter, and evaluated the method to suppress possible backgrounds for KL → π0ν ν ¯ decay signals.

KW - Electromagnetic calorimeter

KW - K → πν ν ¯

KW - KOTO experiment

KW - Pure CsI

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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

ER -

Performance study of a prototype pure CsI calorimeter for the KOTO experiment

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Keywords

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