Latest Developments in Nuclear Emulsion Technology
Latest Developments in Nuclear Emulsion Technology
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核乳化技术最新进展
DOI：
10.1016/j.phpro.2015.11.082
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Kunihiro Morishima
中科院分区：
文献类型：
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作者：
Kunihiro Morishima
核乳胶是用于探测带电粒子三维运动轨迹的高灵敏度照相胶片。这些轨迹被记录为由许多银颗粒组成的轨迹。银颗粒的尺寸约为1 μm，使核乳胶具有亚微米的三维空间分辨率，这使我们获得了几mrad的三维角分辨率。重要的技术进展是用光学显微镜系统建立的核乳胶读出技术的加速。我们成功地开发了一个高速三维读出系统命名为超级超跟踪光栅（S-UTS）的工作读出速度约为50厘米2/小时。目前，我们在名古屋大学引进乳胶生产设备，自主开发核乳胶。此外，我们正在开发核乳胶生产技术（凝胶生产，多孔和批量生产）。本文介绍了OPERA实验中核乳胶技术的发展、应用及目前的发展状况。
Nuclear emulsion is high sensitive photographic film used for detection of three-dimensional trajectory of charged particles. These trajectories are recorded as tracks consist of a lot of silver grains. The size of silver grain is about 1 μm, so that nuclear emulsion has submicron three-dimensional spatial resolution, which gives us a few mrad three-dimensional angular resolution. The important technical progress was speed-up of the read-out technique of nuclear emulsions built with optical microscope system. We succeeded in developing a high-speed three-dimensional read-out system named Super Ultra Track Selector (S-UTS) with the operating read-out speed of approximately 50 cm2/h. Nowadays we are developing the nuclear emulsion gel independently in Nagoya University by introducing emulsion gel production machine. Moreover, we are developing nuclear emulsion production technologies (gel production, poring and mass production). In this paper, development of nuclear emulsion technologies for the OPERA experiment, applications by the technologies and current development are described.