Measurement of K L 0 flux at the J-PARC neutral-kaon beam line

K. Shiomi; K. Y. Baek; J. Comfort; E. Iwai; N. Kawasaki; J. W. Ko; T. K. Komatsubara; J. W. Lee; G. Y. Lim; Y. Maeda; T. Masuda; D. Naito; Y. Nakaya; H. Nanjo; T. Nomura; M. Sasaki; N. Sasao; K. Sato; T. Shimogawa; Y. Sugiyama; Y. Tajima; G. Takahashi; M. Togawa; H. Watanabe; T. Yamanaka; Y. Yanagida; H. Y. Yoshida

doi:10.1016/j.nima.2011.11.010

Measurement of K _L ⁰ flux at the J-PARC neutral-kaon beam line

K. Shiomi, K. Y. Baek, J. Comfort, E. Iwai, N. Kawasaki, J. W. Ko, T. K. Komatsubara, J. W. Lee, G. Y. Lim, Y. Maeda, T. Masuda, D. Naito, Y. Nakaya, H. Nanjo, T. Nomura, M. Sasaki, N. Sasao, K. Sato, T. Shimogawa, Y. SugiyamaY. Tajima, G. Takahashi, M. Togawa, H. Watanabe, T. Yamanaka, Y. Yanagida, H. Y. Yoshida

Research Institute for Interdisciplinary Science

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

13 Citations (Scopus)

Abstract

We describe the KL0 flux measurements performed at the J-PARC neutral-kaon beam line. This beam line was constructed for an experiment aiming to observe the CP-violating rare decay KL0→ ^π0νν̄. The primary proton energy was 30 GeV and the KL0 production angle was 16°. Prior to the physics run, the KL0 flux and spectrum were measured by counting KL0→ ^ππ-π0 decays with a simple setup, which was composed of an electromagnetic calorimeter and a hodoscope system. Results from these measurements are presented and compared with various hadron-interaction simulations.

Original language	English
Pages (from-to)	264-271
Number of pages	8
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	664
Issue number	1
DOIs	https://doi.org/10.1016/j.nima.2011.11.010
Publication status	Published - Feb 1 2012

Keywords

J-PARC
K production

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

Access to Document

10.1016/j.nima.2011.11.010

Cite this

Shiomi, K., Baek, K. Y., Comfort, J., Iwai, E., Kawasaki, N., Ko, J. W., Komatsubara, T. K., Lee, J. W., Lim, G. Y., Maeda, Y., Masuda, T., Naito, D., Nakaya, Y., Nanjo, H., Nomura, T., Sasaki, M., Sasao, N., Sato, K., Shimogawa, T., ... Yoshida, H. Y. (2012). Measurement of K _L ⁰ flux at the J-PARC neutral-kaon beam line. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 664(1), 264-271. https://doi.org/10.1016/j.nima.2011.11.010

Shiomi, K, Baek, KY, Comfort, J, Iwai, E, Kawasaki, N, Ko, JW, Komatsubara, TK, Lee, JW, Lim, GY, Maeda, Y, Masuda, T, Naito, D, Nakaya, Y, Nanjo, H, Nomura, T, Sasaki, M, Sasao, N, Sato, K, Shimogawa, T, Sugiyama, Y, Tajima, Y, Takahashi, G, Togawa, M, Watanabe, H, Yamanaka, T, Yanagida, Y & Yoshida, HY 2012, 'Measurement of K _L ⁰ flux at the J-PARC neutral-kaon beam line', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 664, no. 1, pp. 264-271. https://doi.org/10.1016/j.nima.2011.11.010

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title = "Measurement of K L 0 flux at the J-PARC neutral-kaon beam line",

abstract = "We describe the KL0 flux measurements performed at the J-PARC neutral-kaon beam line. This beam line was constructed for an experiment aiming to observe the CP-violating rare decay KL0→ π0ν{\=ν}. The primary proton energy was 30 GeV and the KL0 production angle was 16°. Prior to the physics run, the KL0 flux and spectrum were measured by counting KL0→ ππ-π0 decays with a simple setup, which was composed of an electromagnetic calorimeter and a hodoscope system. Results from these measurements are presented and compared with various hadron-interaction simulations.",

keywords = "J-PARC, K production",

author = "K. Shiomi and Baek, {K. Y.} and J. Comfort and E. Iwai and N. Kawasaki and Ko, {J. W.} and Komatsubara, {T. K.} and Lee, {J. W.} and Lim, {G. Y.} and Y. Maeda and T. Masuda and D. Naito and Y. Nakaya and H. Nanjo and T. Nomura and M. Sasaki and N. Sasao and K. Sato and T. Shimogawa and Y. Sugiyama and Y. Tajima and G. Takahashi and M. Togawa and H. Watanabe and T. Yamanaka and Y. Yanagida and Yoshida, {H. Y.}",

note = "Funding Information: We would like to express our gratitude to all members of the J-PARC accelerator and Hadron Beam groups for their support. This research was partially supported by Grant-in-Aid for Scientific Research on Priority Areas from the Ministry of Education, Culture, Sports, Science and Technology in Japan . Some of the authors were supported by Grant-in-Aid for JSPS Fellows from the Japan Society for the Promotion of Science or by a U.S. Department of Energy Grant DE-SC0002644 .",

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doi = "10.1016/j.nima.2011.11.010",

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T1 - Measurement of K L 0 flux at the J-PARC neutral-kaon beam line

AU - Shiomi, K.

AU - Baek, K. Y.

AU - Comfort, J.

AU - Iwai, E.

AU - Kawasaki, N.

AU - Ko, J. W.

AU - Komatsubara, T. K.

AU - Lee, J. W.

AU - Lim, G. Y.

AU - Maeda, Y.

AU - Masuda, T.

AU - Naito, D.

AU - Nakaya, Y.

AU - Nanjo, H.

AU - Nomura, T.

AU - Sasaki, M.

AU - Sasao, N.

AU - Sato, K.

AU - Shimogawa, T.

AU - Sugiyama, Y.

AU - Tajima, Y.

AU - Takahashi, G.

AU - Togawa, M.

AU - Watanabe, H.

AU - Yamanaka, T.

AU - Yanagida, Y.

AU - Yoshida, H. Y.

N1 - Funding Information: We would like to express our gratitude to all members of the J-PARC accelerator and Hadron Beam groups for their support. This research was partially supported by Grant-in-Aid for Scientific Research on Priority Areas from the Ministry of Education, Culture, Sports, Science and Technology in Japan . Some of the authors were supported by Grant-in-Aid for JSPS Fellows from the Japan Society for the Promotion of Science or by a U.S. Department of Energy Grant DE-SC0002644 .

PY - 2012/2/1

Y1 - 2012/2/1

N2 - We describe the KL0 flux measurements performed at the J-PARC neutral-kaon beam line. This beam line was constructed for an experiment aiming to observe the CP-violating rare decay KL0→ π0νν̄. The primary proton energy was 30 GeV and the KL0 production angle was 16°. Prior to the physics run, the KL0 flux and spectrum were measured by counting KL0→ ππ-π0 decays with a simple setup, which was composed of an electromagnetic calorimeter and a hodoscope system. Results from these measurements are presented and compared with various hadron-interaction simulations.

AB - We describe the KL0 flux measurements performed at the J-PARC neutral-kaon beam line. This beam line was constructed for an experiment aiming to observe the CP-violating rare decay KL0→ π0νν̄. The primary proton energy was 30 GeV and the KL0 production angle was 16°. Prior to the physics run, the KL0 flux and spectrum were measured by counting KL0→ ππ-π0 decays with a simple setup, which was composed of an electromagnetic calorimeter and a hodoscope system. Results from these measurements are presented and compared with various hadron-interaction simulations.

KW - J-PARC

KW - K production

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