Automatic analysis of the emulsion chamber using the image scanner applied to the Tibet hybrid experiment
Automatic analysis of the emulsion chamber using the image scanner applied to the Tibet hybrid experiment
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DOI：
10.1016/j.nima.2003.12.019
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发表时间：
2004-05
影响因子：
1.4
通讯作者：
S. Ozawa;M. Shibata;Y. Katayose;I. Ohta;N. Hotta;T. Saito;X. Wang;T. Ouchi;J. Huang;H. Tsuchiya;J. Ren;S. L. Lu;N. Zhang;J. Li;Xueyao Zhang
中科院分区：
文献类型：
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作者：
S. Ozawa;M. Shibata;Y. Katayose;I. Ohta;N. Hotta;T. Saito;X. Wang;T. Ouchi;J. Huang;H. Tsuchiya;J. Ren;S. L. Lu;N. Zhang;J. Li;Xueyao Zhang
本文提出了一种利用图像扫描仪进行乳胶室分析的新方法，以处理西藏混合实验PeV区初级质子能谱观测所用的大量X射线胶片。该方法的实验过程包括对X射线胶片图像的多个处理步骤，即高能γ射线引起的级联簇射的探测、噪声的消除、γ族的空间重构和能量的确定。通过新方法获得的结果的质量进行比较，通过当前的手动方法或Monte Carlo模拟。它表明，足够高的质量的乳胶室分析实现了自动方法在能量和几何分辨率。
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.