Bibliografias temáticas / Paul Scherrer Institut

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Literatura científica selecionada sobre o tema "Paul Scherrer Institut"

Autor: Grafiati
Publicado: 14 de março de 2023

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Artigos de revistas sobre o assunto "Paul Scherrer Institut"

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Wagner, W. "Paul-Scherrer-Institut baut Neutronenquelle". Physik Journal 47, n.º 6 (junho de 1991): 548. http://dx.doi.org/10.1002/phbl.19910470620.

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Böni, Peter. "NOP99 workshop held at Paul Scherrer Institut". Neutron News 11, n.º 2 (janeiro de 2000): 11. http://dx.doi.org/10.1080/10448630008233724.

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IWASE, Kazuyuki. "Short stay for research at Paul Scherrer Institut". Denki Kagaku 89, n.º 4 (5 de dezembro de 2021): 396. http://dx.doi.org/10.5796/denkikagaku.21-ot0046.

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Auzelyte, Vaida. "Extreme ultraviolet interference lithography at the Paul Scherrer Institut". Journal of Micro/Nanolithography, MEMS, and MOEMS 8, n.º 2 (1 de abril de 2009): 021204. http://dx.doi.org/10.1117/1.3116559.

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Ferrari, Eugenio, Rasmus Ischebeck, Martin Bednarzik, Simona Bettoni, Simona Borrelli, Hans-Heinrich Braun, Marco Calvi et al. "The ACHIP experimental chambers at the Paul Scherrer Institut". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 907 (novembro de 2018): 244–47. http://dx.doi.org/10.1016/j.nima.2018.02.112.

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Blau, B., K. N. Clausen, S. Gvasaliya, M. Janoschek, S. Janssen, L. Keller, B. Roessli et al. "The Swiss Spallation Neutron Source SINQ at Paul Scherrer Institut". Neutron News 20, n.º 3 (3 de agosto de 2009): 5–8. http://dx.doi.org/10.1080/10448630903120387.

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Conder, Kazimierz, Albert Furrer e Ekaterina Pomjakushina. "A Retrospective of Materials Synthesis at the Paul Scherrer Institut (PSI)". Condensed Matter 5, n.º 4 (23 de setembro de 2020): 55. http://dx.doi.org/10.3390/condmat5040055.

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Morgano, M., S. Peetermans, E. H. Lehmann, T. Panzner e U. Filges. "Neutron imaging options at the BOA beamline at Paul Scherrer Institut". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 754 (agosto de 2014): 46–56. http://dx.doi.org/10.1016/j.nima.2014.03.055.

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Rosas, Sara, Francesca M. Belosi, Nicola Bizzocchi, Till Böhlen, Stefan Zepter, Petra Morach, Antony J. Lomax, Damien C. Weber e Jan Hrbacek. "Benchmarking a commercial proton therapy solution: The Paul Scherrer Institut experience". British Journal of Radiology 93, n.º 1107 (março de 2020): 20190920. http://dx.doi.org/10.1259/bjr.20190920.

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Objective: For the past 20 years, Paul Scherrer Institut (PSI) has treated more than 1500 patients with deep-seated tumors using PSI-Plan, an in-house developed treatment planning system (TPS) used for proton beam scanning proton therapy, in combination with its home-built gantries. The goal of the present work is to benchmark the performance of a new TPS/Gantry system for proton therapy centers which have established already a baseline standard of care. Methods and materials: A total of 31 cases (=52 plans) distributed around 7 anatomical sites and 12 indications were randomly selected and re-planned using Eclipse™. The resulting plans were compared with plans formerly optimized in PSI-Plan, in terms of target coverage, plan quality, organ-at-risk (OAR) sparing and number of delivered pencil beams. Results: Our results show an improvement on target coverage and homogeneity when using Eclipse™ while PSI-Plan showed superior plan conformity. As for OAR sparing, both TPS achieved the clinical constraints. The number of pencil beams required per plan was on average 3.4 times higher for PSI-Plan. Conclusion: Both systems showed a good capacity to produce satisfactory plans, with Eclipse™ being able to achieve better target coverage and plan homogeneity without compromising OARs. Advances in knowledge: A benchmark between a clinically tested and validated system with a commercial solution is of interest for emerging proton therapy, equipped with commercial systems and no previous experience with proton beam scanning.
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Lass, Jakob, Henrik Jacobsen, Kristine M. L. Krighaar, Dieter Graf, Felix Groitl, Frank Herzog, Masako Yamada et al. "Commissioning of the novel Continuous Angle Multi-energy Analysis spectrometer at the Paul Scherrer Institut". Review of Scientific Instruments 94, n.º 2 (1 de fevereiro de 2023): 023302. http://dx.doi.org/10.1063/5.0128226.

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We report on the commissioning results of the cold neutron multiplexing secondary spectrometer CAMEA (Continuous Angle Multi-Energy Analysis) at the Swiss Spallation Neutron Source at the Paul Scherrer Institut, Switzerland. CAMEA is optimized for efficient data acquisition of scattered neutrons in the horizontal scattering plane, allowing for detailed and rapid mapping of low-energy excitations under extreme sample environment conditions.
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Teses / dissertações sobre o assunto "Paul Scherrer Institut"

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Chapuis, François Stoll Urs. "Strategische Führung von Betriebsimmobilien : am Beispiel des Immobilien-Portfolios des Paul Scherrer Instituts (PSI) /". Norderstedt : Books on Demand, 2008. http://www.gbv.de/dms/zbw/570522773.pdf.

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Erba, Danilo. "Strahlenreaktion der Blase und Rektum mit negativen Pi-Mesonen (Pionen) von Patienten mit Prostatakarzinom am Paul Scherrer Institut /". [S.l : s.n.], 1993. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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CHIAPPINI, MARCO. "The construction and commissioning of the ultra low mass MEG II drift chamber for the search of the mu^+ --> e^+ gamma decay at branching ratios below 10^(−13)". Doctoral thesis, Università di Siena, 2019. http://hdl.handle.net/11365/1086892.

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The thesis work focuses on the design, construction and commissioning activities of the new cylindrical drift chamber (CDCH) of the MEG II experiment at Paul Scherrer Institut (PSI, Switzerland), in search for the lepton flavour violating mu^+ --> e^+ gamma decay. The first data taken with CDCH fully operational and integrated into the MEG II experimental apparatus are also described.
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Flaux, Pierrick. "Measurement of the neutron electric dipole moment at the Paul Scherrer Institute : production of magnetic fields". Thesis, Normandie, 2019. http://www.theses.fr/2019NORMC222/document.

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Le travail réalisé au cours de cette thèse concerne le développement du système de bobines de l'expérience n2EDM à l'Institut Paul Sherrer (PSI). Le but de cette expérience est de mettre en évidence de nouvelles sources de violation CP à travers la mesure du moment dipolaire électrique du neutron. L'actuelle limite supérieure sur la mesure de nEDM, $2.9 \cross 10^{-26}$ e.cm (90\% C.L.) à été obtenue par la collaboration RAL-Sussex-ILL en 2006.L'expérience n2EDM vise à améliorer d'un ordre de grandeur la sensibilité statistique en gardant sous contrôle les effets systématiques. Cela requiert la production d'un champ magnétique très uniforme. Les non-uniformités de ce dernier sont en effet responsable de la dépolarisation des neutrons et impliqués dans plusieurs effets systématiques.Dans le premier chapitre, les motivations physiques sont discutées.Le second chapitre décrit le principe de mesure de l'expérience n2EDM, ainsi que l'importance de l'uniformité du champ magnétique. Le chapitre s'achève par une présentation globale du dispositif expérimental.Le troisième chapitre présente le logiciel COMSOL et discute du design et des performances de la bobine B$_{0}$, en charge de la production du champ magnétique principal.Dans le quatrième chapitre, le système de bobines correctrices chargées de corriger les non-uniformités du champ magnétique et celles devant produire des gradients spécifiques sont présentées.Finalement, le cinquième et dernier chapitre présente l'étude des dipôles magnétiques localisés et de leur influence sur l'expérience
This work presents the design of the coils system developed for the n2EDM experiment at the Paul Sherrer Institute (PSI). The goal of this experiment is to reveal new sources of CP violation through the measurement of the neutron electric dipole moment. The current upper limit of the nEDM measurement, $2.9 \cross 10^{-26}$ e.cm (90\% C.L.) was achieved by the RAL-Sussex-ILL collaboration in 2006.The n2EDM experiment aims at improving by one order of magnitude the statistical sensitivity while keeping under control the systematics effects. It requires to produce a very uniform field, its non-uniformities being responsible of the neutron's depolarization and of severals systematic effects.In the first chapter, the theoretical motivation are discussed.The second chapter describes the measurement principle of the n2EDM experiment, as well as the importance of the magnetic field uniformity. This chapter ends by an overview of the apparatus.The third chapter introduces the COMSOL software and discuss the design and the performances of the B0 coil, in charge of the production of the main magnetic field.In the fourth chapter, the correcting coils used to suppress the non-uniformities of the magnetic field and the ones which produce specific gradients are presented.Finally, the fifth and last chapter talks about the study of localised magnetic dipoles and their influence on the experiment
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Livros sobre o assunto "Paul Scherrer Institut"

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Institut), Gemeinsame Wissenschaftliche Tagung der Schweizerischen Gesellschaft für Strahlenbiologie und Medizinische Physik und der Schweizerischen Gesellschaft für Biomedizinische Technik (1993 Paul Scherrer. Gemeinsame Wissenschaftliche Tagung der Schweizerischen Gesellschaft für Strahlenbiologie und Medizinische Physik (SGSMP) und der Schweizerischen Gesellschaft für Biomedizinische Technik (SGBT): Tagungsberichte = Journée commune scientifique de la Sociéte suisse de la radiobiologie et de physique médicale (SSRPM) et de la Sociéte suisse de génie médicale (SSGM) : compte-rendu : proceedings, PSI, Paul Scherrer Institut, Villigen, 4./5. November 1993. Kerzers: Verlag M. Huber, 1993.

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Agency, OECD Nuclear Energy, e Paul Scherrer Institut, eds. Binding models concerning natural organic substances in performance assessment: Proceedings of an NEA workshop organised in co-operation with the Paul Scherrer Institute : Bad Zurzach, Switzerland, 14-16 September 1994. Paris: Nuclear Energy Agency, Organisation for Economic Co-operation and Development, 1995.

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3

Chapuis, François, e Urs Stoll. Strategische Führung von Betriebsimmobilien: Am Beispiel des Immobilien-Portfolios des Paul Scherrer Instituts. Books On Demand, 2008.

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Capítulos de livros sobre o assunto "Paul Scherrer Institut"

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Schildhauer, Tilman J., e Serge M. A. Biollaz. "FLUIDIZED BED METHANATION FOR SNG PRODUCTION - PROCESS DEVELOPMENT AT THE PAUL-SCHERRER INSTITUT". In Synthetic Natural Gas from Coal, Dry Biomass, and Power-to-Gas Applications, 221–30. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119191339.ch8.

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Lauss, Bernhard. "Startup of the high-intensity ultracold neutron source at the Paul Scherrer Institute". In EXA 2011, 297–301. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4890-3_51.

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WALTER, HANS KRISTIAN. "MUON PHYSICS AT THE PAUL SCHERRER INSTITUT (PSI) AND AT TRIUMF". In High Intensity Muon Sources, 279–90. WORLD SCIENTIFIC, 2000. http://dx.doi.org/10.1142/9789812791849_0026.

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"Paul Scherrer Institute (PSI)". In Artists-in-Labs Networking in the Margins, 113–14. Vienna: Springer Vienna, 2010. http://dx.doi.org/10.1007/978-3-7091-0321-0_17.

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"PSI, Paul Scherrer Institute, Villigen". In Artists-in-Labs: Processes of Inquiry, 62–63. Ambra Verlag, 2017. http://dx.doi.org/10.1515/9783990437186-013.

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Trabalhos de conferências sobre o assunto "Paul Scherrer Institut"

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Grossmann, Martin. "Cancer Therapy with Protons at Paul Scherrer Institut". In 2007 15th IEEE-NPSS Real-Time Conference. IEEE, 2007. http://dx.doi.org/10.1109/rtc.2007.4382765.

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Mikityuk, Konstantin. "FAST Code System: Review of Recent Developments and Near-Future Plans". In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75152.

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The FAST (Fast-spectrum Advanced Systems for power production and resource ManagemenT) project is an activity performed in the Laboratory for Reactor Physics and Systems Behaviour of Paul Scherrer Institut in the area of fast-spectrum reactor behaviour with an emphasis on the comparative analysis of Generation IV systems.
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Fiorina, Carlo, Andreas Pautz e Konstantin Mikityuk. "Creation of an OpenFOAM Fuel Performance Class Based on FRED and Integration Into the GeN-Foam Multi-Physics Code". In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81574.

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The FRED code is an in-house tool developed at the Paul Scherrer Institut for the so-called 1.5-D nuclear fuel performance analysis. In order to extend its field of application, this code has been re-implemented as a class of the OpenFOAM numerical library. A first objective of this re-implementation is to provide this tool with the parallel scalability necessary for full-core analyses. In addition, the use of OpenFOAM as base library allows for a straightforward interface with the standard Open-FOAM CFD solvers, as well as with the several OpenFOAM-based applications developed by the nuclear engineering community. In this paper, the newly developed FRED-based Open-FOAM class has been integrated in the GeN-Foam multi-physics code mainly developed at the École polytechnique fédérale de Lausanne and at the Paul Scherrer Institut. The paper presents the details of both the re-implementation of the FRED code and of its integration in GeN-Foam. The performances and parallel scalability of the tool are preliminary investigated and an example of application is provided by performing a full-core multi-physics analysis of the European Sodium Fast Reactor.
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Jenni, F., R. Kunzi, A. Ludeke e L. Tanner. "Five years of operational experience with digitally controlled power supplies for beam control at the Paul Scherrer Institut (PSI)". In 2005 IEEE 11th European Conference on Power Electronics and Applications. IEEE, 2005. http://dx.doi.org/10.1109/epe.2005.219330.

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Radman, Stefan, Carlo Fiorina, Konstantin Mikityuk e Andreas Pautz. "A Simplified Numerical Benchmark for Pool-Type Sodium Fast Reactors". In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-82260.

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The current work presents a simplified benchmark for a pool-type Sodium Fast Reactor based on a 2D (r-z) geometry for testing tightly-coupled spatial neutron transport, thermal-hydraulics and thermal-mechanics modeling. The new benchmark is motivated by development of the multi-physics OpenFOAM-based GeN-Foam code at the Laboratory for Reactor Physics and Systems Behaviour at the EPFL, Switzerland, and the FAST code system by the Advanced Nuclear Systems group at the Paul Scherrer Institut, Switzerland. Aiming at the improvement of modeling and code-to-code comparison, the benchmark could prove useful for developers of tightly-coupled multi-physics simulation tools for reactor analysis. The benchmark specification and the solutions obtained with GeN-Foam are presented and discussed in the paper.
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Paranjape, Sidharth, Guillaume Mignot e Domenico Paladino. "Effect of Thermal Stratification on Full-Cone Spray Performance in Reactor Containment for a Scaled Scenario". In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30755.

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The results of an experimental study on the nuclear reactor containment spray system are presented. Depending on the initial conditions, the spray nozzle configuration and flow rates, the spray may cause higher hydrogen concentration during depressurization due to steam condensation, or it may erode the hydrogen stratification by enhanced mixing. To investigate these phenomena, the tests are performed using a full-cone spray nozzle in PANDA facility at Paul Scherrer Institut, Switzerland. Temporal evolution and spatial distribution of the fluid temperature and the fluid concentrations are measured using thermocouples and mass spectrometers. Two tests are performed with initial vessel wall temperatures of 105°C and 135°C, which create condensing and non-condensing environments respectively. The different initial conditions lead to different density stratifications. The effect of these different density stratification on the flow patterns and mixing of gases in the vessels due to the action of the spray is revealed by these tests.
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Fiorina, Carlo, Manuele Aufiero, Sandro Pelloni e Konstantin Mikityuk. "A Time-Dependent Solver for Coupled Neutron-Transport Thermal-Mechanics Calculations and Simulation of a Godiva Prompt-Critical Burst". In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30395.

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The present paper describes a first step taken at the Paul Scherrer Institut in the development of a new multi-physics platform for reactor analysis. Such platform is based on the finite-volume software OpenFOAM and aims at a tightly coupled description of neutron transport, thermal mechanics and fluid dynamics. For this purpose, a steady-state 3-D discrete ordinates/thermal-mechanics solver was first developed in collaboration with the Politecnico di Milano. The present work briefly discusses such solver and its preliminary validation, which will be described in detail in parallel publications. It then focuses on its extension to time-dependent simulations. The solver is first tested by simulating different step-wise reactivity insertions in a critical configuration constituted by an infinite slab of highly enriched uranium. Subsequently, a super-prompt-critical power burst in the Godiva reactor has been simulated. Godiva was a spherical assembly of highly enriched uranium built and operated at the Los Alamos National Laboratory (US) during the Fifties. A prompt-critical transient in such system configures as a quick power excursion (up to ∼10 GW), which causes a temperature rise, and a subsequent reactivity reduction via expansion of the sphere. The overall transient lasts for few fractions of a millisecond. Results obtained with the newly developed model have been compared to experimental results, showing a relatively good agreement.
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Kalantari, Alireza, Nicolas Auwaijan e Vincent McDonell. "Boundary Layer Flashback Prediction for Turbulent Premixed Jet Flames: Comparison of Two Models". In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90507.

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Abstract Lean-premixed combustion is commonly used in gas turbines to achieve low pollutant emissions, in particular nitrogen oxides. But use of hydrogen-rich fuels in premixed systems can potentially lead to flashback. Adding significant amounts of hydrogen to fuel mixtures substantially impacts the operating range of the combustor. Hence, to incorporate high hydrogen content fuels into gas turbine power generation systems, flashback limits need to be determined at relevant conditions. The present work compares two boundary layer flashback prediction methods developed for turbulent premixed jet flames. The Damköhler model was developed at University of California Irvine (UCI) and evaluated against flashback data from literature including actual engines. The second model was developed at Paul Scherrer Institut (PSI) using data obtained at gas turbine premixer conditions and is based on turbulent flame speed. Despite different overall approaches used, both models characterize flashback in terms of similar parameters. The Damköhler model takes into account the effect of thermal coupling and predicts flashback limits within a reasonable range. But the turbulent flame speed model provides a good agreement for a cooled burner, but shows less agreement for uncooled burner conditions. The impact of hydrogen addition (0 to 100% by volume) to methane or carbon monoxide is also investigated at different operating conditions and flashback prediction trends are consistent with the existing data at atmospheric pressure.
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Scolaro, Alessandro, Ivor Clifford, Carlo Fiorina e Andreas Pautz. "First Steps Towards the Development of a 3D Nuclear Fuel Behavior Solver With OpenFOAM". In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-82381.

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A new 3D fuel behavior solver is currently under collaborative development at the Laboratory for Reactor Physics and Systems Behaviour of the École Polytechnique Fédérale de Lausanne and at the Paul Scherrer Institut. The long term objective is to enable a more accurate simulation of inherently 3D safety-relevant phenomena which affect the performance of the nuclear fuel. The current implementation is a coupled three-dimensional heat conduction and linear elastic small strain solver, which models the effects of burnup- and temperature dependent material properties, swelling, relocation and gap conductance. The near future developments will include the introduction of a smeared pellet cracking model and of material inleasticities, such as creep and plasticity. After an overview of the theoretical background, equations and models behind the solver, this work focuses on the recent preliminary verification and validation efforts. The radial temperature and stress profiles predicted by the solver for the case of an infinitely long rod are compared against their analytical solution, allowing the verification of the thermo-mechanics equations and of the gap heat transfer model. Then, an axisymmetric model is created for 4 rods belonging to the Halden assembly IFA-432. These models are used to predict the fuel centerline temperature during power ramps recorded at the beginning of life, when the fuel rod performance is still not affected by more complex high burnup effects. Finally, the predictions are compared with the experimental measurements coming from the IFPE database. This first preliminary results allow a careful validation of the temperature-dependent material properties and of the gap conductance models.
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Niffenegger, M., D. F. Mora e H. Kottmann. "Non-Destructive Evaluation of RPV Embrittlement by Means of the Thermoelectric Power Method". In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21446.

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Abstract Nondestructive evaluation (NDE) methods are widely used for inspecting safety relevant components in nuclear reactors. Most of these NDE-methods are optimized and applied for the detection of cracks but there is still no reliable NDE method for measuring the embrittlement of RPV steels. However, since the evaluation of RPV embrittlement of so-called Surveillance specimens with the Charpy test is a destructive approach, NDE methods are highly required. Among the investigated technics are acoustic (Ultrasonic scattering), electric (resistivity, thermoelectric) and magnetic (Barkhausen Noise, Non-Linear Harmonics Analysis, Micromagnetic Multiparameter) methods. However, all the methods under investigation suffer from the fact that fracture toughness of steel depends upon several factors, especially on lattice defects such as vacancies, dissolved atoms, dislocation loops, solute clusters, precipitates and dislocations. A major obstacle to the application of NDE methods for the quantification of material embrittlement is that they may be not only sensitive to these defects but also to other factors, such as magnetic, acoustic and electrical properties, as well as to surface quality and ambient temperature, etc.). In this paper, we present results gained by the optimization and application of the thermoelectric power method (TEPM) at the Paul Scherrer Institut (PSI) in Switzerland. The TEPM uses the change of the Seebeck coefficient (K) as an indicator for the material embrittlement. A clear almost linear correlation between the shift of the Nil-Ductile-Transition-Temperature (NDTT) and the change of the K was found. Beside the TEPM and its optimization with the finite element method, we describe the influencing parameters and the potential of this promising NDE method.
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Relatórios de organizações sobre o assunto "Paul Scherrer Institut"

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Butterweck, Gernot, Alberto Stabilini, Benno Bucher, David Breitenmoser, Ladislaus Rybach, Cristina Poretti, Stéphane Maillard et al. Aeroradiometric measurements in the framework of the Swiss Exercise ARM22. Paul Scherrer Institute, PSI, março de 2023. http://dx.doi.org/10.55402/psi:51194.

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The flights of the civil (ARM22c) and military (ARM22m) parts of the exercise were performed between June 13th and 17th and between September 5th and September 9th, respectively. Both parts of the exercise included the measurement of altitude profiles. Two profiles were measured during ARM22c over Lake Thun and one profile during ARM22m over Lake Neuchâtel with sufficient altitude range to determine the slope of the altitude-dependent cosmic correction. The altitude profile over Lake Neuchâtel showed a clear deviation from the expected profile, suggesting a massive influence of airborne radon progeny on the result. According to the alternating schedule of the annual ARM exercises, the environs of the nuclear power plants Beznau (KKB) and Leibstadt (KKL), the Paul Scherrer Institute (PSI) and the intermediate storage facility (ZWILAG) were surveyed with an extension of the measuring area into German territory, following a request of German authorities. The site of the former Lucens reactor was measured and found unobtrusive in the measured data. Background flights were performed over several Swiss cities, regions and valleys. Besides attenuation effects of water bodies, variations of natural radionuclide content could be observed. Remains of the Chernobyl deposition were detected near the French border and in southern Switzerland.
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