Article
Thermodynamics
Jan Syblik, Slavomir Entler, Ladislav Vesely, Jan Stepanek, Vaclav Dostal
Summary: Nuclear fusion is a promising low-carbon and low-emission energy source, and the European Union's demonstration fusion power plant DEMO is one of them. The pulse operation of the fusion reactor is a key attribute in the design of DEMO, and power fluctuations from the power source have a significant impact on the power plant technology. This article proposes a power conversion system based on supercritical CO2 that can operate at two nominal power levels.
Article
Materials Science, Multidisciplinary
Sen Liu, Branden B. Kappes, Behnam Amin-ahmadi, Othmane Benafan, Xiaoli Zhang, Aaron P. Stebner
Summary: Machine learning is applied to predict new alloys and performance, combining elemental and heat treatment features to improve model performance using physics-based methods, validating predictive design capabilities.
APPLIED MATERIALS TODAY
(2021)
Article
Physics, Fluids & Plasmas
Takashi Nozawa, Hiroyasu Tanigawa, Takaki Kojima, Takamoto Itoh, Noritake Hiyoshi, Mitsuru Ohata, Taichiro Kato, Masami Ando, Motoki Nakajima, Takanori Hirose, Jordan D. Reed, Xiang Chen, Josina W. Geringer, Yutai Katoh
Summary: This paper summarizes the current status of the material properties handbook for structural design using Japanese reduced-activation ferritic/martensitic steel F82H, focusing on key structural parameters and tensile data. Additionally, it discusses structural design approaches introduced to address issues unique to the DEMO reactor, such as multi-axial loading conditions and coolant compatibility.
Article
Nuclear Science & Technology
Triestino Minniti, Frank Schoofs, Llion Marc Evans, Winfried Kockelmann, Jeong-Ha You, Heather Lewtas
Summary: Emission control systems help reduce tailpipe emissions from vehicles, protecting the environment and improving fuel efficiency.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Nuclear Science & Technology
R. Kembleton, J. Morris, M. Siccinio, F. Maviglia
Summary: This paper summarizes the work carried out to identify the EU-DEMO baseline operating point and the underlying assumptions about technology and physics performance. The major design choices are described and the principle drivers for the direction of conceptual development, resulting in the operating space for EU-DEMO, are identified. The final output of the systems code forms the basis for more detailed engineering and physics evaluation and design work.
FUSION ENGINEERING AND DESIGN
(2022)
Article
Engineering, Environmental
Thomas Claes, Tom Van Gerven, M. E. Leblebici
Summary: Translucent photocatalytic reactor structures have an impact on absorption efficiency and mass transfer limitations, with smaller base elements leading to increased surface area for potential catalyst load but also higher energy loss due to more light scattering boundaries. Different base structure sizes influence energy absorption and catalytic activity, with varying results for 1 mm, 2 mm, and 3 mm diameter spheres in the study. The study proposes a design strategy for cross-current illuminated photocatalytic packed bed reactors based on the model and principles discussed.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nuclear Science & Technology
M. Gorley, G. Aiello, J. Henry, T. Nozawa, G. Pintsuk, M. Rieth, H. Tanigawa
Summary: This paper provides an overview of the recent progress, associated risks, and development plans of structural materials for in-vessel components in DEMO plants, focusing on Reduced Activation Ferritic Martensitic Steels. The status of RAFM steels development for use in DEMO plants is highlighted, along with the limitations and pragmatic procedures ongoing in their validation for operation in DEMO IVCs. Advanced modifications to F82H and EUROFER are also discussed, with minor improvements opening up a wider operational design space for DEMO reactors.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Materials Science, Multidisciplinary
M. Richardson, M. Gorley, Y. Wang, G. Aiello, G. Pintsuk, E. Gaganidze, M. Richou, J. Henry, R. Vila, M. Rieth
Summary: A dedicated procedure was developed to categorize the technology readiness of materials for specific DEMO in-vessel fusion reactor applications. The study highlights the challenges facing DEMO materials development and the introduction of a biennial review to facilitate more effective planning and targeted materials development within WPMAT.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Automation & Control Systems
Chuntan Gao, Baoping Cai, Chaoyang Sheng, Yonghong Liu, Keyang Liu, Javed Akbar Khan, Mingwei Shi, Zengkai Liu, Renjie Ji
Summary: This article proposes a life cycle structural integrity design method that integrates operational reliability, risk controllability, and maintenance economy. By considering the interactions between system, subsystem, and components, component degradation is predicted using existing theoretical methods or experimental studies, and the advanced first-order second moment method is applied to calculate structural reliability. Risk assessment and maintenance are based on the results of the reliability analysis. The proposed method is applied to the design of a surface-controlled subsurface safety valve in an oilfield in the South China Sea.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Nuclear Science & Technology
G. Federici, J. Holden, C. Baylard, A. Beaumont
Summary: This paper provides an overview of the methodology adopted within the EUROfusion framework during the Pre-Concept Design Phase, focusing on advancing technical design basis and urgent R&D. The integrated design approach based on systems engineering addresses key design integration issues by assessing critical systems interdependencies and uncertainties. The programme benefits from ITER's experience and maintains a strong link with the ITER schedule in future design phases.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Physics, Fluids & Plasmas
J. A. Alonso, I Calvo, D. Carralero, J. L. Velasco, J. M. Garcia-Regana, I Palermo, D. Rapisarda
Summary: This work explores the impact of high-field three-dimensional electromagnets on the physics design point of a stellarator fusion reactor. It is found that the chosen field strength has little effect on the device size, and similar optimization is required for the magnetic configuration. Additionally, it is discovered that the family of reactor design points shares an invariant operation map of fusion power output.
Article
Chemistry, Multidisciplinary
Guangming Zhou, Joerg Rey, Francisco A. Hernandez, Ali Abou-Sena, Martin Lux, Frederik Arbeiter, Georg Schlindwein, Florian Schwab
Summary: This article reports the engineering design of the first-ever breeder zone mockup of the HCPB breeding blanket for the EU DEMO program, which will be tested in the HELOKA facility to validate heat transfer correlations, CFD software, and thermal hydraulics systems codes. The design description, rationale and test matrix, and corresponding analyses are discussed and presented.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Pietro Arena, Alessandro Del Nevo, Fabio Moro, Simone Noce, Rocco Mozzillo, Vito Imbriani, Fabio Giannetti, Francesco Edemetti, Antonio Froio, Laura Savoldi, Simone Siriano, Alessandro Tassone, Fernando Roca Urgorri, Pietro Alessandro Di Maio, Ilenia Catanzaro, Gaetano Bongiovi
Summary: The Water-Cooled Lead-Lithium Breeding Blanket (WCLL BB) is a candidate for the driver blanket of the EU-DEMO reactor, designed with a holistic approach that considers various factors such as neutronics, thermal-hydraulics, thermo-mechanics, and magneto-hydro-dynamics. The layout of WCLL BB is able to meet different requirements, including integration, tritium self-sufficiency, and thermal and mechanical needs. The design choices and characteristics of WCLL BB for EU-DEMO are discussed, along with achievements and remaining issues to be investigated further in the upcoming design phase.
APPLIED SCIENCES-BASEL
(2021)
Article
Nuclear Science & Technology
Lingfeng Wei, Chunhui Dong, Zuowei Wen, Jingdi Xu, Guoliang Yuan
Summary: The research on controlled nuclear fusion is complex, and the completion of ITER marks the beginning of a new phase in building a fusion reactor. The electronics used in fusion reactors need to withstand harsh environments and minimize the risk of irradiation. A Radiation Resistant Pre-amplifier (RRP) has been designed and tested for performance under radiation, showing improved radiation hardness compared to an Ordinary Pre-amplifier (OP). The study also discusses optimization of shielding in the context of ITER port cell area.
FUSION ENGINEERING AND DESIGN
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiande Zhang, Xin He, Shan Yin, Wenlong Cai, Qian Wang, Hao Wu, Kaipeng Wu, Yun Zhang
Summary: The unique heterostructure composed of MnO and MnS confined in carbon microspheres showed improved lithium storage performance due to the abundance of electrochemically active sites, alleviated volumetric variation, enhanced conductive network, and enhanced lithium-ion diffusion kinetics. The heterostructure also promoted the transfer of electrons and accelerated the migration of lithium ions, resulting in remarkable rate capability and exceptional cycling stability.
INORGANIC CHEMISTRY
(2022)
Article
Nuclear Science & Technology
Frank Schoofs, Mike Gorley
FUSION ENGINEERING AND DESIGN
(2019)
Article
Nuclear Science & Technology
Gerald Pintsuk, Eberhard Diegele, Sergei L. Dudarev, Michael Gorley, Jean Henry, Jens Reiser, Michael Rieth
FUSION ENGINEERING AND DESIGN
(2019)
Article
Nuclear Science & Technology
Y. Q. Wang, M. Gorley, S. Kabra, E. Surrey
FUSION ENGINEERING AND DESIGN
(2019)
Article
Nuclear Science & Technology
Kuo Zhang, Ermile Gaganidze, Michael Gorley
FUSION ENGINEERING AND DESIGN
(2019)
Article
Nuclear Science & Technology
Michael Gorley, Eberhard Diegele, Ermile Gaganidze, Ferenc Gillemot, Gerald Pintsuk, Frank Schoofs, Ildiko Szenthe
FUSION ENGINEERING AND DESIGN
(2020)
Article
Nuclear Science & Technology
Allan Harte, Huw Dawson, David Bowden, Rory Spencer, Simon Kirk, Michael Gorley
FUSION ENGINEERING AND DESIGN
(2020)
Article
Nuclear Science & Technology
M. Gorley, G. Aiello, J. Henry, T. Nozawa, G. Pintsuk, M. Rieth, H. Tanigawa
Summary: This paper provides an overview of the recent progress, associated risks, and development plans of structural materials for in-vessel components in DEMO plants, focusing on Reduced Activation Ferritic Martensitic Steels. The status of RAFM steels development for use in DEMO plants is highlighted, along with the limitations and pragmatic procedures ongoing in their validation for operation in DEMO IVCs. Advanced modifications to F82H and EUROFER are also discussed, with minor improvements opening up a wider operational design space for DEMO reactors.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Multidisciplinary Sciences
Bin Zhu, Yiqiang Wang, Jiri Dluhos, Andy J. London, Michael Gorley, Mark J. Whiting, Tan Sui
Summary: This study uses PFIB-DIC and nanoindentation techniques to reveal the mechanistic connection between residual stress, microstructure, and microhardness in laser-welded Eurofer97. The results show the presence of nonequilibrium microscale residual stress and tensile residual stress softening in the heat-affected zone. These findings provide insights for maintaining structural integrity in this critical engineering challenge.
