Neutron and X-Ray Tomography
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Three Dimensional Polarimetric Neutron Tomography of Magnetic
www.nature.com/scientificreports OPEN Three Dimensional Polarimetric Neutron Tomography of Magnetic Fields Received: 25 April 2017 Morten Sales 1, Markus Strobl 2,3, Takenao Shinohara4, Anton Tremsin5, Luise Theil Kuhn 6, Accepted: 18 January 2018 William R. B. Lionheart7, Naeem M. Desai 7, Anders Bjorholm Dahl8 & Søren Schmidt 1 Published: xx xx xxxx Through the use of Time-of-Flight Three Dimensional Polarimetric Neutron Tomography (ToF 3DPNT) we have for the frst time successfully demonstrated a technique capable of measuring and reconstructing three dimensional magnetic feld strengths and directions unobtrusively and non- destructively with the potential to probe the interior of bulk samples which is not amenable otherwise. Using a pioneering polarimetric set-up for ToF neutron instrumentation in combination with a newly developed tailored reconstruction algorithm, the magnetic feld generated by a current carrying solenoid has been measured and reconstructed, thereby providing the proof-of-principle of a technique able to reveal hitherto unobtainable information on the magnetic felds in the bulk of materials and devices, due to a high degree of penetration into many materials, including metals, and the sensitivity of neutron polarisation to magnetic felds. The technique puts the potential of the ToF time structure of pulsed neutron sources to full use in order to optimise the recorded information quality and reduce measurement time. Te spin of a neutron passing through a magnetic feld will undergo an amount of precession proportional to the strength of the magnetic feld and the time spent by the neutron in the magnetic feld. Te time is proportional to the neutron wavelength, λ, and the path length through the magnetic feld, L. -
ICANS XXI Dawn of High Power Neutron Sources and Science Applications
Book of Abstracts ICANS XXI Dawn of high power neutron sources and science applications 29 Sep - 3 Oct 2014, JAPAN Ibaraki Prefectural Culture Center Update : 12 Oct. 2014 Best photography in 7th Oarai Town Photo Contest. WELCOME TO ICANS XXI ICANS (International Collaboration on Advanced Neutron Sources) is a network for scientists who are involved in developing pulsed neutron sources and accelerator based spallation neutron sources. Since 1st ICANS meetings was held in 1977 at Argonne National Laboratory in the day of dawn of spallation neutron technique, ICANS has been continuously held already 20 times somewhere in the world. Now we are extremely happy to announce that the ICANS, the 21st meeting, will be held at Mito hosted by J-PARC this autumn. We have a large number of topics to be discussed, there are twelve topics, such as futuristic idea of neutron source, rapid progress in facilities, integration issues in target-moderator-development, etc. The details can be found in the agenda. The meeting has a two layered structure, one is plenary session and another is workshop. Two of them are complementary and tightly cooperate each other. In the meeting we would like to enhance "workshop style", which is an original and traditional way of ICANS. Actually 2/3 of topics will be discussed in the workshop sessions. It also will be essentially organized/ lead by the workshop chairs. Plenary session shows overall issues in a relevant workshop, whose details should be talked/discussed in the workshop. The venue for the meeting is Mito city, where the 2nd Shogun Family lived for a long period of time during Edo era from 17th to 19th century, when the Tokugawa shogunate ruled the country. -
Application of 3D Neutron Imaging and Tomography in Cultural Heritage Research
F1-RC-1219.1 LIMITED DISTRIBUTION International Atomic Energy Agency Coordinated Research Project on Application of 3D Neutron Imaging and Tomography in Cultural Heritage Research Report of the first Research Co-ordination Meeting Vienna, Austria 07 - 11 May 2012 Reproduced by the IAEA Vienna, Austria, 2012 NOTE The material reproduced here has been supplied by the authors and has not been edited by the IAEA. The views expressed remain the responsibility of the named authors and do not necessarily reflect those of the government(s) of the designating Member State(s). In particular, neither the IAEA nor any other organization or body sponsoring the meeting can be held responsible for this material CONTENTS 1. FOREWORD .................................................................................................................... 1 2. EXECUTIVE SUMMARY ............................................................................................... 2 3. INTRODUCTION ............................................................................................................. 3 4. CRP OBJECTIVES ........................................................................................................... 4 4.1. Objectives of the CRP ............................................................................................ 4 4.2. Objectives of 1st RCM meeting ............................................................................. 4 4.3 Working groups: .................................................................................................... -
A Novel Energy Resolved Neutron Imaging Detector Based On
A novel energy resolved neutron imaging detector based on TPX3Cam for the CSNS Jianqing Yang1,2,3, Jianrong Zhou2,3,4*, Xingfen Jiang2,3,4, Jinhao Tan2,3,5, Lianjun Zhang2,3,5, Jianjin Zhou2,3, Xiaojuan Zhou2,3,Wenqin Yang2,3,4,Yuanguang Xia2,3, Jie Chen2,3, XinLi Sun1, Quanhu Zhang1**, Zhijia Sun2,3,4***, Yuanbo Chen2,3,4 1. Xi’an Research Institute of Hi-Tech, 710025, Xian,China. 2. Spallation Neutron Source Science Center, Dongguan, 523803, Guangdong, China; 3. State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; 4. University of Chinese Academy of Sciences, Beijing 100049, China 5. Harbin Engineering University, Harbin, Heilongjiang, China, 150000 Abstract: The China Spallation Neutron Source (CSNS) operates in pulsed mode and has a high neutron flux. This provides opportunities for energy resolved neutron imaging by using the TOF (Time Of Flight) approach. An Energy resolved neutron imaging instrument (ERNI) is being built at the CSNS but significant challenges for the detector persist because it simultaneously requires a spatial resolution of less than 100 μm, as well as a microsecond-scale timing resolution. This study constructs a prototype of an energy resolved neutron imaging detector based on the fast optical camera, TPX3Cam coupled with an image intensifier. To evaluate its performance, a series of proof of principle experiments were performed in the BL20 at the CSNS to measure the spatial resolution and the neutron wavelength spectrum, and perform neutron imaging with sliced wavelengths and Bragg edge imaging of the steel sample. -
Conceptual Design Report Jülich High
General Allgemeines ual Design Report ual Design Report Concept Jülich High Brilliance Neutron Source Source Jülich High Brilliance Neutron 8 Conceptual Design Report Jülich High Brilliance Neutron Source (HBS) T. Brückel, T. Gutberlet (Eds.) J. Baggemann, S. Böhm, P. Doege, J. Fenske, M. Feygenson, A. Glavic, O. Holderer, S. Jaksch, M. Jentschel, S. Kleefisch, H. Kleines, J. Li, K. Lieutenant,P . Mastinu, E. Mauerhofer, O. Meusel, S. Pasini, H. Podlech, M. Rimmler, U. Rücker, T. Schrader, W. Schweika, M. Strobl, E. Vezhlev, J. Voigt, P. Zakalek, O. Zimmer Allgemeines / General Allgemeines / General Band / Volume 8 Band / Volume 8 ISBN 978-3-95806-501-7 ISBN 978-3-95806-501-7 T. Brückel, T. Gutberlet (Eds.) Gutberlet T. Brückel, T. Jülich High Brilliance Neutron Source (HBS) 1 100 mA proton ion source 2 70 MeV linear accelerator 5 3 Proton beam multiplexer system 5 4 Individual neutron target stations 4 5 Various instruments in the experimental halls 3 5 4 2 1 5 5 5 5 4 3 5 4 5 5 Schriften des Forschungszentrums Jülich Reihe Allgemeines / General Band / Volume 8 CONTENT I. Executive summary 7 II. Foreword 11 III. Rationale 13 1. Neutron provision 13 1.1 Reactor based fission neutron sources 14 1.2 Spallation neutron sources 15 1.3 Accelerator driven neutron sources 15 2. Neutron landscape 16 3. Baseline design 18 3.1 Comparison to existing sources 19 IV. Science case 21 1. Chemistry 24 2. Geoscience 25 3. Environment 26 4. Engineering 27 5. Information and quantum technologies 28 6. Nanotechnology 29 7. Energy technology 30 8. -
Small Angle Scattering in Neutron Imaging—A Review
Journal of Imaging Review Small Angle Scattering in Neutron Imaging—A Review Markus Strobl 1,2,*,†, Ralph P. Harti 1,†, Christian Grünzweig 1,†, Robin Woracek 3,† and Jeroen Plomp 4,† 1 Paul Scherrer Institut, PSI Aarebrücke, 5232 Villigen, Switzerland; [email protected] (R.P.H.); [email protected] (C.G.) 2 Niels Bohr Institute, University of Copenhagen, Copenhagen 1165, Denmark 3 European Spallation Source ERIC, 225 92 Lund, Sweden; [email protected] 4 Department of Radiation Science and Technology, Technical University Delft, 2628 Delft, The Netherlands; [email protected] * Correspondence: [email protected]; Tel.: +41-56-310-5941 † These authors contributed equally to this work. Received: 6 November 2017; Accepted: 8 December 2017; Published: 13 December 2017 Abstract: Conventional neutron imaging utilizes the beam attenuation caused by scattering and absorption through the materials constituting an object in order to investigate its macroscopic inner structure. Small angle scattering has basically no impact on such images under the geometrical conditions applied. Nevertheless, in recent years different experimental methods have been developed in neutron imaging, which enable to not only generate contrast based on neutrons scattered to very small angles, but to map and quantify small angle scattering with the spatial resolution of neutron imaging. This enables neutron imaging to access length scales which are not directly resolved in real space and to investigate bulk structures and processes spanning multiple length scales from centimeters to tens of nanometers. Keywords: neutron imaging; neutron scattering; small angle scattering; dark-field imaging 1. Introduction The largest and maybe also broadest length scales that are probed with neutrons are the domains of small angle neutron scattering (SANS) and imaging. -
Use of Neutron Beams for Low and Medium Flux Research Reactors: Radiography and Materials Characterization
IAEA-TECDOC-837 Use of neutron beams for low and medium flux research reactors: radiography and materials characterization Report Technicala of Committee meeting held in Vienna, 4-7 May 1993 INTERNATIONAL ATOMIC ENERGY AGENCY The originating Sectio f thino s publicatio IAEe th An i was: Physics Section International Atomic Energy Agency Wagramerstrasse 5 0 10 x P.OBo . A-1400 Vienna, Austria USE OF NEUTRON BEAMS FOR LOW AND MEDIUM FLUX RESEARCH REACTORS: RADIOGRAPH MATERIALD YAN S CHARACTERIZATION IAEA, VIENNA, 1995 IAEA-TECDOC-837 ISSN 1011-4289 ©IAEA, 1995 Printe IAEe th AustriAn i y d b a October 1995 FOREWORD Research reactors have been playing an important role in the development of scientific and technological infrastructure and in training of manpower for the introduction of nuclear power in many countries. Currently, there are 284 operational research reactors in the world, includindevelopin9 3 n i 8 g8 g countries numbee th ; f reactoro r developinn si g countries si increasin s morga e countries embar programmen ko nuclean i s r scienc technologyd ean . However, full utilization of these facilities for fundamental and applied research has seldom been achieved. In particular, the utilization of beam ports has been quite low. Neutron beam based researce mosth f t o s regardeimportani he on s a d t research programme carriee sb than dca t out, eve mediud nan witw mhlo flux reactors range Th .f eo activities possibl n thii e s wido s fiel s e i d s generall i tha t i t y feasibl o defint D e R& e programmes suite specifio dt c need conditionsd san therefors i t I . -
Neutron Imaging- a Nondestructive Diagnostic Tool for Material Science
Presents: Muhammad Abir, Ph.D. Imaging Specialist Phoenix, LLC Neutron Imaging- A Nondestructive Diagnostic Tool for Material Science Abstract: Neutron imaging is a powerful non-invasive technique in various applications for probing the internal structure of much thicker objects as well as for imaging of low Z materials. Particularly in situations, where penetration through x-rays is difficult, neutron imaging plays an important role. Manufacturers of complex parts through additive manufacturing processes or large high-density items that may not be well suited to x-rays finds the benefits of neutron imaging intriguing. Manufacturers of composite materials, turbine blade manufacturers, and manufacturers utilizing investment casting techniques are also interested to see how neutron radiography can find residual ceramic core material leftover from chemical leaching and dissolving processes. Neutrons are generated either from a neutron generating isotope (e.g. UW Madison nuclear reactor) in a reactor facility or from a deuterium-deuterium or deuterium- tritium neutron generator (e.g. Phoenix) or proton accelerator (e.g. SNS at ORNL). Depending on neutron energies, different neutron imaging systems can be developed. Usually the high- resolution (less than 10 µm) neutron imaging systems are developed with cold neutrons while the medium-resolution (usually 10 µm- 200 µm) neutron imaging systems can be developed with thermal neutrons. For dense samples that are not easily penetrable, mm-range resolution neutron imaging systems can be developed using fast neutrons. With the combination of X-ray and neutron imaging, the fusion between X-ray and neutron imaging can provide more insight about the materials. This talk will discuss Dr. -
Comparative Study of Ancient and Modern Japanese Swords Using
Neutron Radiography - WCNR-11 Materials Research Forum LLC Materials Research Proceedings 15 (2020) 221-226 https://doi.org/10.21741/9781644900574-34 Comparative Study of Ancient and Modern Japanese Swords using Neutron Tomography Yoshihiro Matsumoto1, a *, Kenichi Watanabe2,b , Kazuma Ohmae2,c , Akira Uritani2,d , Yoshiaki Kiyanagi2,e , Hirotaka Sato3,f , Masato Ohnuma3,g , Anh Hoang Pham4,h , Shigekazu Morito4,i , Takuya Ohba4,j , Kenichi Oikawa5,k, Takenao Shinohara5,l, Tetsuya Kai5,m Stefanus Harjo5,n and Masakazu Ito6,o 1Comprehensive Research Organization for Science and Society, Ibaraki 319-1106, Japan 2Graduate School of Engineering, Nagoya University, Aichi, 464-8603, Japan 3Faculty of Engineering, Hokkaido University, Hokkaido 060-8628, Japan 4Interdisciplinary Faculty of Science and Engineering, Shimane University, Shimane 690-8504, Japan 5J-PARC Center, Japan Atomic Energy Agency, Ibaraki, 319-1195, Japan 6WAKOU MUSEUM, Shimane 692-0011, Japan [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected] u.ac.jp, [email protected], [email protected], [email protected], [email protected], [email protected], [email protected] Keywords: Japanese Sword, Neutron Tomography, RADEN Abstract. We have performed neutron tomography using two ancient Japanese swords (designated Morikage and Sukemasa) and one modern Japanese sword (Masamitsu) at RADEN in the J-PARC Materials and Life Science Experimental Facility. -
Neutron Imaging at LANL – History and Recent Developments
Overview of Imaging at LANSCE and LANL Ron Nelson P-27, LANL LANSCE User Group Meeting Santa Fe, NM November 2, 2015 UNCLASSIFIED LA-UR-15-28542 Operated by Los Alamos National Security, LLC for the U.S. Department of Energy's NNSA Coauthors . LANL – James Hunter, Michelle Espy, Tim Ickes, Bill Ward (AET-6) – Richard Schirato (ISR-1) – Alicia Swift (XCP-3) – Sven Vogel (MST-8) – Sanna Sevanto, Turin Dickman, Michael Malone (EES-14) . University of California at Berkeley – Anton Tremsin, AdrianUNCLASSIFIED Losko Operated by Los Alamos National Security, LLC for the U.S. Department of Energy's NNSA Slide 2 Introduction – Neutron Imaging Advances at Los Alamos . Many types of imaging are in use at LANL – Photon (Microtron – to 15 MeV, DARHT) – Proton (800 MeV) short pulse, dynamic imaging, primary beam – Neutron (thermal-epithermal, high-energy), secondary beams – Muon – using natural cosmic ray background . Goal is to observe properties of objects and phenomena that can’t be seen with other probes – non-destructive evaluation (NDE) . Photons (x-rays) scattering depends on atomic number . Protons are sensitive to material density . Neutrons have a scattering dependence that varies widely with energy and element/isotope . All of these probes are complementary, combined “multi-probe” imaging can be a very powerfulUNCLASSIFIED technique Operated by Los Alamos National Security, LLC for the U.S. Department of Energy's NNSA Slide 3 Imaging comparison . X-Ray – good for small higher-Z objects in lower-Z materials e.g. bones or metal in the human body . Thermal neutrons – good for hydrogenous materials in heavier materials e.g. -
Neutron Tomography Developments and Applications
UC Davis Recent Work Title Neutron tomography developments and applications Permalink https://escholarship.org/uc/item/20n6769j Authors Richards, Wade J Gibbons, M. R Shields, K. C Publication Date 2003-08-01 eScholarship.org Powered by the California Digital Library University of California Neutron tomography developments and applications W.J. Richardsa, M.R. Gibbonsb, K.C. Shieldsc a University of California, Davis McClellan Nuclear Radiation Center b McClellan Nuclear Radiation Center, McClellan, California c Science Applications International Corporation, McClellan, California Abstract Neutron radiography has been in use as a nondestructive testing technique for the past fifty years. The neutrons’ unique ability to image certain elements and isotopes that are either completely undetectable or poorly detected by other NDI methods makes neutron radiography an important tool for the NDI community. Neutron radiography like other imaging techniques takes a number of different forms (i.e., film, radioscopic, transfer methods, tomography, etc.) This paper will describe the neutron tomography system developed at the University of California, Davis McClellan Nuclear Radiation Center (UC Davis/MNRC), and the applications for both research and commercial uses. The neutron radiography system at the UC Davis/MNRC has been under development for four years. The initial system was developed to find very low concentrations of hydrogen (i.e., < 200 ppm). In order to achieve these low detection levels, it was necessary to perform both pre- and post-processing of the tomographs. The pre-processing steps include corrections for spatial resolution and random noise effects. Images are corrected for systematic noise errors and beam hardening. From these data the attenuation coefficient is calculated. -
Tensorial Neutron Tomography of Three-Dimensional Magnetic Vector Fields
ARTICLE DOI: 10.1038/s41467-018-06593-4 OPEN Tensorial neutron tomography of three- dimensional magnetic vector fields in bulk materials A. Hilger1,2, I. Manke1, N. Kardjilov1, M. Osenberg2, H. Markötter1 & J. Banhart1,2 Knowing the distribution of a magnetic field in bulk materials is important for understanding basic phenomena and developing functional magnetic materials. Microscopic imaging tech- 1234567890():,; niques employing X-rays, light, electrons, or scanning probe methods have been used to quantify magnetic fields within planar thin magnetic films in 2D or magnetic vector fields within comparable thin volumes in 3D. Some years ago, neutron imaging has been demon- strated to be a unique tool to detect magnetic fields and magnetic domain structures within bulk materials. Here, we show how arbitrary magnetic vector fields within bulk materials can be visualized and quantified in 3D using a set of nine spin-polarized neutron imaging mea- surements and a novel tensorial multiplicative algebraic reconstruction technique (TMART). We first verify the method by measuring the known magnetic field of an electric coil and then investigate the unknown trapped magnetic flux within the type-I superconductor lead. 1 Helmholtz Centre Berlin for Materials and Energy (HZB), Institute of Applied Materials, Hahn-Meitner-Platz 1, 14109 Berlin, Germany. 2 Department of Materials Science and Technology, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany. Correspondence and requests for materials should be addressed to I.M. (email: [email protected]) NATURE COMMUNICATIONS | (2018) 9:4023 | DOI: 10.1038/s41467-018-06593-4 | www.nature.com/naturecommunications 1 ARTICLE NATURE COMMUNICATIONS | DOI: 10.1038/s41467-018-06593-4 urveying magnetic fields inside solid matter is a difficult down |↓〉 so that only spin up |↑〉 neutrons can pass.