arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.11448physics.ins-dethep-ex
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μ子及其诱导的次级粒子成像--一种新技术

Imaging by muons and their induced secondary particles -- a novel technique

G. Galgóczi, D. Mrdja, I. Bikit, K. Bikit, J. Slivka, J. Hansman, L. Oláh, G. Hamar, D. Varga

摘要:

Muography是一种很好的方法,可以在没有任何额外粒子源的情况下获得大型物体(例如火山和大型建筑物)的3D图像,利用宇宙μ子的存在。muography的基本原理是测量单个μ子轨迹并确定它们的吸收或散射。这些过程取决于它们所经过的物质。这种新的方法是基于测量μ子的径迹和相应的粒子,这些粒子是由μ子本身在所研究的目标中产生的。当μ子穿过物质时,它们通过电离、韧致辐射、对产生和核相互作用与物质相互作用。我们的实验装置被设计成既能测量初级μ子又能测量产生的次级μ子(主要是电子和伽马)。μ子的轨道由一种特殊的多丝正比室(MWPC)确定,称为CCC(封闭阴极室)。靶中产生的二次粒子由放置在靶周围的四个塑料测量器测量。CCC室和加速器同时使用,以收集通过靶的μ子的数据。由于所述过程的截面随材料的密度和原子序数而变化,因此该技术可用于研究靶的材料含量。

英文摘要:

Muography is a well estabilished method to obtain 3D images of large objects (e.g. volcanoes and large buildings) without any additional particle source, taking advantage of the presence of cosmic muons. The underlying principle of muography is the measurement of individual muon tracks and the determination of their absorption or scattering. These processes depend on the material that they have travelled through. The novel method discussed is based on the measurement of the muon tracks and of the corresponding particles those were produced by the muons themselves in the investigated target. As muons pass through matter they interact with matter by ionization, bremsstrahlung, pair production and nuclear interactions. Our experimental setup is designed in a way to measure both the primary muons and the created secondaries (mostly electrons and gammas). The tracks of the muons are determined by a special kind of Multi-Wire Proportional Chambers (MWPC) called CCC (Close Cathode Chamber). The secondary particles produced in the target are measured by four plastic scintillators placed around the target. The CCC chambers and the scintillators are used in coincidence in order to gather data about muons those passed through the target. As cross sections of the described processes vary by the density and the atomic number of materials this technique could be used to investigate the material content of the target.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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