SEARCH FOR THE QUALITY OF NEW FILMS COATED BY A MACHINE WITH THE EXCLUSIVE APPARATUS

用专用设备寻找机器涂覆的新薄膜的质量

• 批准号: 13640275
• 负责人: HOSHINO Kaoru
• 金额: $ 2.3万
• 依托单位: NAGOYA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13640275/
• 关键词: nuclear emulsion; minimum ionizing; cross sectional images; quality check; proton; πmesons; Opera films; Full automated Analyzing system; 電離損失; 荷電粒子識別; パイ中間子; ミュー粒子; CCD; GD; FD

The quality of nuclear emulsion is judged by the number of silver grains, which produced by minimum ionizing particles, per 100 μm, and the number of fogs per 1,000μm^3. Using a high magnification objective lens each grains are imaged in neighbor pixels of a CCD, assuming highest signals pixel position to be that of grains. Changing the focus depth a set of cross sectional images can be got. From those recorded data the number of grains per 100 μm of minimum ionizing tracks, which penetrated almost parallel to the plate. But if they are penetrated vertically to the plats it is rather difficult to discriminate each others, and so it is almost impossible to make quality check counting grain numbers.Looking a set of images penetrated track is move linearly to the depth. The shift values per unit depth are dx/dz and dy/dz respectively. The super imposed image shifting some values shows a peak signal pixel with the existence of corresponding angle track. Picking up signals greater than some … More threshold signal level tracks, Fully Automated Analyzing System were build at Nagoya University. In 2002 test beams of KEKPS were irradiated to ECC made by lead plates and Opera films, which produced by the collaboration with Fuji and Nagoya. The beam is set to plus charge and momentum to 1.2GeV/c. This beam is including protons and πmesons about fifty-fifty. The pulse height of tracks is measured in one plate, but the distribution is broad shape. In ECC a total of 29 films is consisted, and the mean value distribution of each tracks pulse height shows clear two peaks. Full automated Analyzing system was used for this analysis, but in principle it is possible to analyze with the machine made by this project. To detect grains of one or less micrometer size, it is essential to use a high magnification objective lens. And to get good quality images it is also essential to use good illumination system. The first target of this project is to make portable emulsion scanning system. It can be move by human power, but it is still heavy to move any places. It is necessary to build a compact and high quality illuminations. Less

核乳剂的质量以每100μm最小电离粒子产生的银粒数和每1000μm^3的雾粒数来判断。使用高放大倍率物镜，每个颗​​粒在 CCD 的相邻像素中成像，假设最高信号像素位置是颗粒的位置。改变焦深可以获得一组横截面图像。根据这些记录的数据，每 100 μm 最小电离轨迹的颗粒数量，几乎平行于板穿透。但如果它们垂直穿透到平板上，则很难区分彼此，因此几乎不可能进行计数颗粒数的质量检查。观察一组图像穿透轨迹线性移动到深度。每单位深度的偏移值分别为 dx/dz 和 dy/dz。偏移一些值的叠加图像显示了峰值信号像素，并且存在相应的角度轨迹。名古屋大学建造了全自动分析系统，可以拾取大于某些阈值信号电平轨迹的信号。 2002年，KEKPS的测试光束照射到由铅板和Opera胶片制成的ECC上，该ECC是与富士和名古屋合作生产的。光束设置为正电荷和动量至 1.2GeV/c。该束流包含约五五十个质子和π介子。磁道的脉冲高度是在一块板上测量的，但分布是宽形状的。 ECC总共由29片组成，每条轨道脉冲高度的平均值分布显示出明显的两个峰值。该分析使用了全自动分析系统，但原则上可以使用该项目制造的机器进行分析。为了检测一微米或更小的颗粒，必须使用高倍物镜。为了获得高质量的图像，使用良好的照明系统也很重要。该项目的第一个目标是制造便携式乳剂扫描系统。可以人力移动，但是移动任何地方还是很重。有必要构建紧凑且高质量的照明。较少的