First demonstration of an emulsion multi-stage shifter for accelerator neutrino experiments in J-PARC T60
First demonstration of an emulsion multi-stage shifter for accelerator neutrino experiments in J-PARC T60
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J-PARC T60 中首次演示用于加速器中微子实验的乳液多级移位器
DOI：
10.1093/ptep/ptx083
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发表时间：
2017
影响因子：
3.5
通讯作者：
Hiroshi Shibuya et al. (NINJA)
中科院分区：
文献类型：
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作者：
Kyohei Yamada;Shoji Mikado;Yusuke Morimoto;Satoru Ogawa;Hiroshi Oshima;Hiroshi Shibuya et al. (NINJA)
我们描述了有史以来第一次实施的时钟为基础的，多级乳液移位器在加速器中微子实验。该系统安装在日本质子加速器研究中心的中微子监测大楼，作为测试实验T60的一部分，稳定运行了126.6天。通过将时间信息应用于乳胶膜，得到了各种结果。时间分辨率为5.3-14.7 s，在手术时间为46.9天的情况下进行了评价（产生的分割数为1.4-3.8）。通过使用时间和空间信息，重建符合事件组成的高多重性和顶点包含的事件，包括中微子事件，进行。乳胶事件与T2 K实验的轴上近探测器之一INGRID观测到的事件进行了匹配，具有较高的可靠性（98.5%），并通过多级移位器建立了乳胶和INGRID事件的混合分析。结果表明，多级移相器在中微子实验中的应用是可行的。
We describe the first ever implementation of a clock-based, multi-stage emulsion shifter in an accelerator neutrino experiment. The system was installed in the neutrino monitoring building at the Japan Proton Accelerator Research Complex as part of a test experiment, T60, and stable operation was maintained for a total of 126.6 days. By applying time information to emulsion films, various results were obtained. Time resolutions of 5.3–14.7 s were evaluated in an operation spanning 46.9 days (yielding division numbers of 1.4–3.8). By using timing and spatial information, reconstruction of coincident events consisting of high-multiplicity and vertex-contained events, including neutrino events, was performed. Emulsion events were matched to events observed by INGRID, one of the on-axis near detectors of the T2K experiment, with high reliability (98.5%), and hybrid analysis of the emulsion and INGRID events was established by means of the multi-stage shifter. The results demonstrate that the multi-stage shifter can feasibly be used in neutrino experiments.