MLSD-OSEM reconstruction algorithm for cosmic ray muon radiography

2008 ◽  
Author(s):  
Yuanyuan Liu ◽  
Ziran Zhao ◽  
Zhiqiang Chen ◽  
Li Zhang ◽  
Yuxiang Xing
Keyword(s):  
Cosmic Ray ◽  
Reconstruction Algorithm ◽  
Muon Radiography

scholarly journals Bedrock sculpting under an active alpine glacier revealed from cosmic-ray muon radiography

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
R. Nishiyama ◽  
A. Ariga ◽  
T. Ariga ◽  
A. Lechmann ◽  
D. Mair ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Alpine Glacier ◽  
Muon Radiography

scholarly journals Muon radiography to visualise individual fuel rods in sealed casks

2021 ◽  
Vol 7 ◽  
pp. 12
Author(s):  
Thomas Braunroth ◽  
Nadine Berner ◽  
Florian Rowold ◽  
Marc Péridis ◽  
Maik Stuke
Keyword(s):  
Spent Nuclear Fuel ◽  
Cosmic Ray ◽  
Scattering Data ◽  
Pressurized Water Reactor ◽  
Test Statistic ◽  
Pressurized Water ◽  
Fuel Rods ◽  
Acceptance Criterion ◽  
Muon Radiography ◽  
Kolmogorov Smirnov

Cosmic-ray muons can be used for the non-destructive imaging of spent nuclear fuel in sealed dry storage casks. The scattering data of the muons after traversing provides information on the thereby penetrated materials. Based on these properties, we investigate and discuss the theoretical feasibility of detecting single missing fuel rods in a sealed cask for the first time. We perform simulations of a vertically standing generic cask model loaded with fuel assemblies from a pressurized water reactor and muon detectors placed above and below the cask. By analysing the scattering angles and applying a significance ratio based on the Kolmogorov-Smirnov test statistic we conclude that missing rods can be reliably identified in a reasonable measuring time period depending on their position in the assembly and cask, and on the angular acceptance criterion of the primary, incoming muons.

scholarly journals Volcanoes in Italy and the role of muon radiography

2018 ◽  
Vol 377 (2137) ◽  
pp. 20180050 ◽  
Author(s):  
Raffaello D'Alessandro ◽  
F. Ambrosino ◽  
G. Baccani ◽  
L. Bonechi ◽  
M. Bongi ◽  
...  
Keyword(s):  
Imaging Technique ◽  
Cosmic Ray ◽  
Final Phase ◽  
Rock Density ◽  
Magma Supply ◽  
Muon Radiography ◽  
Seismic Measurement ◽  
Measurement Campaigns ◽  
Better Than

Cosmic-ray muon radiography (muography), an imaging technique that can provide measurements of rock densities within the top few 100 m of a volcanic cone, has now achieved a spatial resolution of the order of 10 m in optimal detection conditions. Muography provides images of the top region of a volcano edifice with a resolution that is considerably better than that typically achieved with other conventional methods (i.e. gravimetric). We expect such precise measurements, to provide us with information on anomalies in the rock density distribution, which can be affected by dense lava conduits, low-density magma supply paths or the compression with the depth of the overlying soil. The MUon RAdiography of VESuvius (MURAVES) project is now in its final phase of construction and deployment. Up to four muon hodoscopes, each with a surface of roughly 1 m 2 , will be installed on the slope of Vesuvius and take data for at least 12 months. We will use the muographic profiles, combined with data from gravimetric and seismic measurement campaigns, to determine the stratigraphy of the lava plug at the bottom of the Vesuvius crater, in order to infer potential eruption pathways. While the MURAVES project unfolds, others are using emulsion detectors on Stromboli to study the lava conduits at the top of the volcano. These measurements are ongoing: they have completed two measurement campaigns and are now performing the first data analysis. This article is part of the Theo Murphy meeting issue ‘Cosmic-ray muography’.

Application of Emulsion Cloud Chamber to cosmic-ray muon radiography

2015 ◽  
Vol 83 ◽  
pp. 56-58 ◽  
Author(s):  
Ryuichi Nishiyama ◽  
Seigo Miyamoto ◽  
Naotaka Naganawa
Keyword(s):  
Cosmic Ray ◽  
Cloud Chamber ◽  
Muon Radiography

scholarly journals Correction to “Three-dimensional computational axial tomography scan of a volcano with cosmic ray muon radiography”

2011 ◽  
Vol 116 (B3) ◽  
Author(s):  
Hiroyuki K. M. Tanaka ◽  
Hideaki Taira ◽  
Tomihisa Uchida ◽  
Manobu Tanaka ◽  
Minoru Takeo ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Cosmic Ray ◽  
Axial Tomography ◽  
Muon Radiography ◽  
Tomography Scan

scholarly journals Optimizing geophysical muon radiography using information theory

2019 ◽  
Vol 220 (2) ◽  
pp. 1078-1094
Author(s):  
C J Benton ◽  
C N Mitchell ◽  
M Coleman ◽  
S M Paling ◽  
D L Lincoln ◽  
...  
Keyword(s):  
Bulk Density ◽  
Carbon Capture ◽  
Cosmic Ray ◽  
Muon Flux ◽  
Physical Parameters ◽  
Expectation Values ◽  
Low Contrast ◽  
Information Theoretic ◽  
Monte Carlo Techniques ◽  
Muon Radiography

SUMMARY Cosmic ray muons are highly penetrating, with some reaching several kilometres into solid rock. Consequently, muon detectors have been used to probe the interiors of large geological structures, by observing how the muon flux varies with direction of arrival. There is an increasing need to discriminate between materials differing only slightly in bulk density. A particularly demanding application is in monitoring underground reservoirs used for CO2 capture and storage, where bulk density changes of approximately 1 per cent are anticipated. Muon arrival is a random process, and it is the underlying expectation values, not the actual muon counts, which provide information on the physical parameters of the system. It is therefore necessary to distinguish between differences in muon counts due to real geological features, and those arising from random error. This is crucial in the low-contrast case, where the method can reach the information theoretic limit of what a data source can reveal, even in principle. To this end, methods to analyse information availability in low-contrast muon radiography have been developed, as have means to optimally interpret the available data, both for radiography and for tomography. This includes a method for calculating expectation values of muon flux for a given geological model directly, complementing existing Monte Carlo techniques. A case study, using a model of carbon capture is presented. It is shown that the new data analysis techniques have the potential to approximately double the effective sensitivity of the detectors.

scholarly journals Muon radiography for exploration of Mars geology

2012 ◽  
Vol 2 (2) ◽  
pp. 829-853
Author(s):  
S. Kedar ◽  
H. K. M. Tanaka ◽  
C. J. Naudet ◽  
C. E. Jones ◽  
J. P. Plaut ◽  
...  
Keyword(s):  
Low Power ◽  
Large Scale ◽  
Cosmic Ray ◽  
Passive Imaging ◽  
Geological Structures ◽  
Minimal Impact ◽  
Naturally Occurring ◽  
Muon Radiography ◽  
Recent Developments ◽  
Muon Production

Abstract. Muon radiography is a technique that uses naturally occurring showers of muons (penetrating particles generated by cosmic rays) to image the interior of large scale geological structures in much the same way as standard X-ray radiography is used to image the interior of smaller objects. Recent developments and application of the technique to terrestrial volcanoes have demonstrated that a low-power, passive muon detector can peer deep into geological structures up to several kilometers in size, and provide crisp density profile images of their interior at ten meter scale resolution. Preliminary estimates of muon production on Mars indicate that the near horizontal Martian muon flux, which could be used for muon radiography, is as strong or stronger than that on Earth, making the technique suitable for exploration of numerous high priority geological targets on Mars. The high spatial resolution of muon radiography also makes the technique particularly suited for the discovery and delineation of Martian caverns, the most likely planetary environment for biological activity. As a passive imaging technique, muon radiography uses the perpetually present background cosmic ray radiation as the energy source for probing the interior of structures from the surface of the planet. The passive nature of the measurements provides an opportunity for a low power and low data rate instrument for planetary exploration that could operate as a scientifically valuable primary or secondary instrument in a variety of settings, with minimal impact on the mission's other instruments and operation.

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