Design and Applications of a Climatic Chamber for in-situ Neutron Imaging Experiments
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): David Mannes, Florian Schmid, Timon Wehmann, Eberhard Lehmann Due to the high sensitivity for hydrogen, the detection and quantification of moisture and moisture transport processes are some of the key topics in neutron imaging. Especially when dealing with hygroscopic material, such as wood and other porous media, it is crucial for quantitative analyses to know and control the ambient conditions of the sample precisely. In this work, a neutron transparent climatic chamber is presented, which was designed and built for the imaging facilities at the ...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Quadruple Axis Neutron Computed Tomography
We describe a new multiple-axis setup using four independent miniaturized rotation tables. (Source: Physics Procedia)
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Design Feasibility Study for a Demultiplexer Miniaturized for Microtomographic Imaging
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): Udo Lang, Pavel Trtik, Manuela Notter, Jan Hovind, Eberhard H. Lehmann In this paper a design feasibility study of a miniaturized demultiplexer that allows for simultaneous tomographic imaging on three independent rotational axes. While the general concept has been proven on a larger scale for three centimeter sized samples, the downscaling of this concept is presented herein. The main requirements are firstly, positioning of the samples parallel to the detector screen for stable imaging and secondly, the use of backlash free gears to avoid any ang...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Wolter Mirrors for Neutron Imaging
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): Huarui Wu, Boris Khaykovich, Xuewu Wang, Daniel S. Hussey Conventional radiography based on attenuation of a well-collimated beam remains the mainstay of neutron imaging. The spatial resolution attained with this pinhole-camera method depends on the beam collimation; therefore, achieving the spatial resolution of a few microns is practically difficult, since collimating the neutron beam results in a low flux. The use of focusing devices allows maintaining sufficient spatial resolution without collimating the beam. Therefore, axisymmetric grazing-inc...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Thermal Neutron Radiography using a High-flux Compact Neutron Generator
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): Michael Taylor, Evan Sengbusch, Chris Seyfert, Eli Moll, Ross Radel A novel neutron imaging system has been designed and constructed by Phoenix Nuclear Labs to investigate specimens when conventional X-ray imaging will not suffice. A first-generation electronic neutron generator is actively being used by the United States Army and is coupled with activation films for neutron radiography to inspect munitions and other critical defence and aerospace components. A second-generation system has been designed to increase the total neutron output from an ...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Status of the Imaging Facility INUS at INR
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): Marin Dinca, C. Iorgulis, D. Barbos, L.D. Mitrea An imaging facility (INUS) with thermal neutrons and γ radiations is in use at the tangential channel of the TRIGA Annular Core Pulsing Reactor (ACPR) from the Institute for Nuclear Research (INR). ACPR is a nuclear research reactor operated in steady state with a maximum power of 500kW and in pulsing mode with a peak power of 20000 MW. ACPR was used for neutron imaging only by operation in steady state mode at a power of 100kW. There are presented actual parameters of the facility after some beam po...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Recent Progress of Radiography and Tomography at the Energy-resolved Neutron Imaging System RADEN
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): Y. Matsumoto, M. Segawa, T. Kai, T. Shinohara, T. Nakatani, K. Oikawa, K. Hiroi, Y.H. Su, H. Hayashida, J.D. Parker, S.Y. Zhang, Y. Kiyanagi We have performed neutron radiography and tomography using a CCD camera-type detector for some test samples at RADEN. The current spatial resolution for neutron radiography is estimated to about 350μm in the largest field-of-view of 300 × 300 mm2 and 100μm in the field-of-view of 60 × 60 mm2. It is thought that the latter spatial resolution is strongly affected by the image blur in the scintillator ...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Neutron Imaging Development at China Academy of Engineering Physics (CAEP)
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): Hang Li, Sheng Wang, Chao Cao, Heyong Huo, Bin Tang Based the China Mianyang Research Reactor (CMRR) and D-T accelerator neutron source, thermal neutron, cold neutron and fast neutron imaging facilities are all installed at China Academy of Engineering Physics (CAEP). Various samples have been imaged by different energy neutrons and shown the neutron imaging application in industry, aerospace and so on. The facilities parameters and recent neutron imaging development will be shown in this paper. (Source: Physics Procedia)
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
The Thermal Neutron Beam Option for NECTAR at MLZ
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): M.J. Mühlbauer, T. Bücherl, C. Genreith, M. Knapp, M. Schulz, S. Söllradl, F.M. Wagner, H. Ehrenberg The beam port SR10 at the neutron source FRM II of Heinz Maier-Leibnitz Zentrum (MLZ) is equipped with a moveable assembly of two uranium plates, which can be placed in front of the entrance window of the beam tube via remote control. With these plates placed in their operating position the thermal neutron spectrum produced by the neutron source FRM II is converted to fission neutrons with 1.9 MeV of mean energy. This fission neutron spectrum ...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Status and Perspectives of Neutron Imaging Facilities
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): E. Lehmann, P. Trtik, D. Ridikas The methodology and the application range of neutron imaging techniques have been significantly improved at numerous facilities worldwide in the last decades. This progress has been achieved by new detector systems, the setup of dedicated, optimized and flexible beam lines and the much better understanding of the complete imaging process thanks to complementary simulations. Furthermore, new applications and research topics were found and implemented. However, since the quality and the number of neutron imaging facilit...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Gemmological Investigations on Pearls and Emeralds using Neutron Imaging
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): D. Mannes, C. Hanser, M. Krzemnicki, R.P. Harti, I. Jerjen, E. Lehmann Gemmology deals with the characterization of coloured stones, diamonds and pearls used in the jewellery sector. As the investigated objects are in general rather valuable, a large variety of non-destructive testing methods (e.g. X-ray luminescence, X-ray tomography, UV/VIS spectroscopy, etc.) is routinely used for their inspection and characterisation. In a joint project of Paul Scherrer Institut (PSI), Swiss Gemmological Institute (SSEF) and the University Freiburg, potential ...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Crystallographic Analysis of a Japanese Sword by using Bragg Edge Transmission Spectroscopy
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): Yoshinori Shiota, Hiroyuki Hasemi, Yoshiaki Kiyanagi Neutron imaging using a pulsed neutron source can give crystallographic information over wide area of a sample by analysing position dependent transmission spectra. With the use of a Bragg edge imaging method we non-destructively obtained crystallographic information of a Japanese sword, signed by Bishu Osafune Norimitsu, in order to know position dependent crystallographic characteristics and to check usefulness of the method for the Japanese sword investigation. Strong texture appeared on the bac...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
The Early Stage of Neutron Tomography for Cultural Heritage Study in Thailand
This study showed that the sample stage should be replaced. Even though the NT is a lengthy process and involves large data processing, it offers an opportunity to better understand features of an object in more details than with neutron radiography. The digital NT also allows us to separate inner features that appear superpositioned in radiography by cross-sectioning the 3D data set of an object without destruction. As a result, NT is a significant tool for revealing hidden information included in the inner structure of cultural heritage objects, providing great benefits in archaeological study, conservation process and a...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Archaeometric Investigations on Manufacturing Processes in Ancient Cultures with the Neutron Imaging Station DINGO at ANSTO
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): Filomena Salvemini, Vladimir Luzin, Francesco Grazzi, Scott Olsen, Kenneth Sheedy, Sue Gatenby, Min-Jung Kim, Ulf Garbe This paper focuses on recent archaeometric investigations conducted with the neutron imaging station DINGO at ANSTO. The synergic application of non-invasive scientific analytical methods is becoming a common practice in archaeometry and conservation science. Neutron tomography is playing a significant role in expanding the technical limits and investigation capabilities of traditional analytical methods. We discuss advantages ...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
Exploring Hominin and Non-hominin Primate Dental Fossil Remains with Neutron Microtomography
Publication date: 2017 Source:Physics Procedia, Volume 88 Author(s): Clément Zanolli, Burkhard Schillinger, Amélie Beaudet, Ottmar Kullmer, Roberto Macchiarelli, Lucia Mancini, Friedemann Schrenk, Claudio Tuniz, Vladimira Vodopivec Fossil dental remains are an archive of unique information for paleobiological studies. Computed microtomography based on X-ray microfocus sources (X-μCT) and Synchrotron Radiation (SR-μCT) allow subtle quantification at the micron and sub-micron scale of the meso- and microstructural signature imprinted in the mineralized tissues, such as enamel and dentine, through high-resoluti...
Source: Physics Procedia - June 24, 2017 Category: Physics Source Type: research
