Automatic analysis of the emulsion chamber using the image scanner applied to the Tibet hybrid experiment

Shunsuke Ozawa; M. Shibata; Y. Katayose; I. Ohta; N. Hotta; T. Saito; X. Wang; T. Ouchi; J. Huang; H. Tsuchiya; J. R. Ren; S. L. Lu; N. J. Zhang; J. Y. Li; X. Y. Zhang

doi:10.1016/j.nima.2003.12.019

Automatic analysis of the emulsion chamber using the image scanner applied to the Tibet hybrid experiment

Shunsuke Ozawa^*, M. Shibata, Y. Katayose, I. Ohta, N. Hotta, T. Saito, X. Wang, T. Ouchi, J. Huang, H. Tsuchiya, J. R. Ren, S. L. Lu, N. J. Zhang, J. Y. Li, X. Y. Zhang

^*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

A new method of emulsion chamber analysis by using an image scanner is developed in order to process a large number of X-ray films used in the Tibet hybrid experiment which is carried out to observe primary proton spectrum in the PeV region. The experimental procedure in this method consists of multiple steps of processing the image of the X-ray films, i.e. the detection of cascade showers induced by high-energy γ-rays, the noise reduction, the spatial reconstruction of γ-families and their energy determination. The quality of the results obtained by the new method is compared with that obtained by the current manual method or Monte Carlo simulations. It is shown that sufficiently high quality of the emulsion chamber analysis is realized by the automatic method both in energy and geometrical resolution.

Original language	English
Pages (from-to)	193-205
Number of pages	13
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	523
Issue number	1-2
DOIs	https://doi.org/10.1016/j.nima.2003.12.019
Publication status	Published - 2004 May 1
Externally published	Yes

Keywords

Automatic analysis
Chemical composition of primary cosmic rays
Cosmic rays
Emulsion chambers

ASJC Scopus subject areas

Instrumentation
Nuclear and High Energy Physics

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10.1016/j.nima.2003.12.019

Cite this

Ozawa, S., Shibata, M., Katayose, Y., Ohta, I., Hotta, N., Saito, T., Wang, X., Ouchi, T., Huang, J., Tsuchiya, H., Ren, J. R., Lu, S. L., Zhang, N. J., Li, J. Y., & Zhang, X. Y. (2004). Automatic analysis of the emulsion chamber using the image scanner applied to the Tibet hybrid experiment. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 523(1-2), 193-205. https://doi.org/10.1016/j.nima.2003.12.019

Automatic analysis of the emulsion chamber using the image scanner applied to the Tibet hybrid experiment. / Ozawa, Shunsuke; Shibata, M.; Katayose, Y. et al.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 523, No. 1-2, 01.05.2004, p. 193-205.

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

Ozawa, S, Shibata, M, Katayose, Y, Ohta, I, Hotta, N, Saito, T, Wang, X, Ouchi, T, Huang, J, Tsuchiya, H, Ren, JR, Lu, SL, Zhang, NJ, Li, JY & Zhang, XY 2004, 'Automatic analysis of the emulsion chamber using the image scanner applied to the Tibet hybrid experiment', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 523, no. 1-2, pp. 193-205. https://doi.org/10.1016/j.nima.2003.12.019

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abstract = "A new method of emulsion chamber analysis by using an image scanner is developed in order to process a large number of X-ray films used in the Tibet hybrid experiment which is carried out to observe primary proton spectrum in the PeV region. The experimental procedure in this method consists of multiple steps of processing the image of the X-ray films, i.e. the detection of cascade showers induced by high-energy γ-rays, the noise reduction, the spatial reconstruction of γ-families and their energy determination. The quality of the results obtained by the new method is compared with that obtained by the current manual method or Monte Carlo simulations. It is shown that sufficiently high quality of the emulsion chamber analysis is realized by the automatic method both in energy and geometrical resolution.",

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author = "Shunsuke Ozawa and M. Shibata and Y. Katayose and I. Ohta and N. Hotta and T. Saito and X. Wang and T. Ouchi and J. Huang and H. Tsuchiya and Ren, {J. R.} and Lu, {S. L.} and Zhang, {N. J.} and Li, {J. Y.} and Zhang, {X. Y.}",

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AU - Ozawa, Shunsuke

AU - Shibata, M.

AU - Katayose, Y.

AU - Ohta, I.

AU - Hotta, N.

AU - Saito, T.

AU - Wang, X.

AU - Ouchi, T.

AU - Huang, J.

AU - Tsuchiya, H.

AU - Ren, J. R.

AU - Lu, S. L.

AU - Zhang, N. J.

AU - Li, J. Y.

AU - Zhang, X. Y.

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AB - A new method of emulsion chamber analysis by using an image scanner is developed in order to process a large number of X-ray films used in the Tibet hybrid experiment which is carried out to observe primary proton spectrum in the PeV region. The experimental procedure in this method consists of multiple steps of processing the image of the X-ray films, i.e. the detection of cascade showers induced by high-energy γ-rays, the noise reduction, the spatial reconstruction of γ-families and their energy determination. The quality of the results obtained by the new method is compared with that obtained by the current manual method or Monte Carlo simulations. It is shown that sufficiently high quality of the emulsion chamber analysis is realized by the automatic method both in energy and geometrical resolution.

KW - Automatic analysis

KW - Chemical composition of primary cosmic rays

KW - Cosmic rays

KW - Emulsion chambers

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Automatic analysis of the emulsion chamber using the image scanner applied to the Tibet hybrid experiment

Abstract

Keywords

ASJC Scopus subject areas

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