This title appears in the Scientific Report :
2014
Compact Neutron Imaging System for Radiocative-waste Analysis (NISRA)
Compact Neutron Imaging System for Radiocative-waste Analysis (NISRA)
IntroductionRadioactive waste has to underdo a process of quality checking in order to check its conformance with national regulations prior to its transport, intermediate storage and final disposal. Within the quality checking of radioactive waste packages non-destructive assays are required to cha...
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Personal Name(s): | Kettler, John (Corresponding Author) |
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Engels, Ralf / Frank, Martin / Furletova, Julia / Havenith, Andreas / Kemmerling, Günter / Mauerhofer, Eric / Schitthelm, Oliver / Schumann, Manuel / Vasques, Richard / Voß, Dirk | |
Contributing Institute: |
Nukleare Entsorgung; IEK-6 |
Published in: | 2014 |
Imprint: |
2014
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Conference: | 10th World Conference on Neutron Radiography, Grindelwald (Schweiz), 2014-10-05 - 2014-10-10 |
Document Type: |
Abstract |
Research Program: |
Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) Safety Research for Nuclear Waste Disposal |
Publikationsportal JuSER |
IntroductionRadioactive waste has to underdo a process of quality checking in order to check its conformance with national regulations prior to its transport, intermediate storage and final disposal. Within the quality checking of radioactive waste packages non-destructive assays are required to characterize their radiotoxic and chemotxic contents.The NISRA project, financed by BMBF, was launched in May 2012 and it is currently on the second stage of its threeyear schedule. The goal of this project - undertaken in cooperation by RWTH Aachen University, Forschungszentrum Jülich and SIEMENS AG - is to study the feasibility of a compact neutron imaging system for radioactive waste inspection. The system is based an a 14 MeV neutron source and an advanced detector system. There are two different concepts for the readout detector: 1. Commercial aSi-flat-panel-detector, 2. In-house developed photomultiplier based detector with crossed WLSF. Detailed simulations of the neutron and photon transport in the system are performed in order to determine the best approaches to minimize the noise and optimize the conversion of neutrons into photons. Furthermore, a novel image reconstruction algorithm that fits the demands of the compact system (specifically the reconstruction of a divergent neutron beam) was developed. Since the middle of 2012 several experimental studies with the hands-on-test-facility were performed. The concept, important results as well as the actual status of the NISRA project is presented. |