Results 41 to 50 of about 10,224 (240)

Impurity transport and bulk ion flow in a mixed collisionality stellarator plasma

, 2017
The accumulation of impurities in the core of magnetically confined plasmas, resulting from standard collisional transport mechanisms, is a known threat to their performance as fusion energy sources.
Helander, Per, Mollén, Albert, Newton, Sarah L., Smith, Håkan M.   +3 more
core   +1 more source

Implications of Innovative Nuclear Technologies on Ghana’s Nuclear Future

Science and Technology of Nuclear Installations, Volume 2026, Issue 1, 2026.
Innovations in nuclear technology have the potential to play a transformative role in Ghana’s pursuit of a secure, reliable and low‐carbon energy future. This review examines recent global advances in nuclear reactor technologies, fuel cycle systems, waste management approaches, regulatory practices and digital applications and assesses their relevance
R. G. Abrefah, B. K. A. Baiden, F. Ameyaw, S. A. Zakaria, Doddy Kastanya   +4 more
wiley   +1 more source

An Enhanced Evaluation Method of Sequential Probability Ratio Test

Mathematical Problems in Engineering, Volume 2019, Issue 1, 2019., 2019
Accurate event detection has high priority in many technical applications. Events in acquired data series, their duration, and statistical parameters provide useful information about the observed system and about its current state. This information can be used for condition monitoring, state identification, and many kinds of forecasting as well.
Gabor Gardonyi, Gabor Por, Krisztian Samu, Akhil Garg   +3 more
wiley   +1 more source

Coil optimization methods for a planar coil stellarator

Nuclear Fusion
The planar coil stellarator design is a novel approach to producing the confining magnetic field of a stellarator plasma. The work presented here details the optimization of the two types of planar coils that are used in the planar coil design: the ...
T.G. Kruger, M.F. Martin, D.A. Gates, the Thea Energy Team   +3 more
doaj   +1 more source

Fast and Invertible Simplicial Approximation of Magnetic‐Following Interpolation for Visualizing Fusion Plasma Simulation Data

Computer Graphics Forum, Volume 44, Issue 3, June 2025.
Abstract We introduce a fast and invertible approximation for fusion plasma simulation data represented as 2D planar meshes with connectivities approximating magnetic field lines along the toroidal dimension in deformed 3D toroidal spaces. Scientific variables (e.g., density and temperature) in these fusion data are interpolated following a complex ...
Congrong Ren, Robert Hager, Randy Michael Churchill, Albert Mollén, Seung‐Hoe Ku, Choong‐Seock Chang, Hanqi Guo   +6 more
wiley   +1 more source

Design of transverse magnetic field sweeping solenoids for 140 GHz mega‐watt gyrotrons

The Journal of Engineering, Volume 2018, Issue 14, Page 682-685, 2018., 2018
As the overlarge power density at the collector of mega‐watt (MW) gyrotrons limits the increase in their average output power and pulse width, transverse magnetic field sweeping solenoids (TMFSS) with periodical changing magnetic field have been designed for a 140 GHz MW gyrotron developed and tested at Beijing Vacuum Electronics Research Institute ...
Xu Zeng, Bentian Liu, Jinjun Feng
wiley   +1 more source

Stellarator fusion systems enabled by arrays of planar coils

Nuclear Fusion
We present an overview of a novel electromagnetic coil configuration for stellarators and its application to two near-term fusion systems. The novel coil configuration is the planar coil stellarator, able to implement precisely-quasisymmetric 3D magnetic
D.A. Gates, S. Aslam, B. Berzin, P. Bonofiglo, A. Cote, D.W. Dudt, E. Flom, D. Fort, A. Koen, T.G. Kruger, S.T.A. Kumar, M.F. Martin, A. Ottaviano, S. Pasmann, P.K. Romano, C.P.S. Swanson, L. Tang, E. Winkler, R. Wu   +18 more
doaj   +1 more source

Formation of a Boron‐Oxide Termination for the (100) Diamond Surface

Advanced Materials Interfaces, Volume 11, Issue 33, November 25, 2024.
A boron‐oxide termination for (100) diamond is formed under ultrahigh vacuum conditions. This is the first demonstration of a new method of introducing a boron‐based species to the diamond lattice. This result has potential for enabling new surface‐based pathways to the fabrication of high quality boron‐doped delta layers and boron‐based material ...
Alex K. Schenk, Rebecca Griffin, Anton Tadich, Daniel Roberts, Alastair Stacey   +4 more
wiley   +1 more source

Thermal‐Hydraulic Assessment of W7‐X Plasma Vessel Venting System in Case of 40 mm In‐Vessel LOCA

Science and Technology of Nuclear Installations, Volume 2015, Issue 1, 2015., 2015
This paper presents assessment of the capacity of W7‐X venting system in response to in‐vessel LOCA, rupture of 40 mm diameter pipe during operation mode “baking.” The integral analysis of the coolant release from the cooling system, pressurisation of PV, and response of the venting system is performed using RELAP5 code.
E. Urbonavičius, T. Kaliatka, Massimo Zucchetti   +2 more
wiley   +1 more source

Geometry effects on zonal flow dynamics and turbulent transport in optimized stellarators

Nuclear Fusion
Global gyrokinetic simulations find a strong suppression of ion temperature gradient (ITG) turbulence by zonal flows in stellarators optimized for neoclassical transport.
Haotian Chen, Xishuo Wei, Hongxuan Zhu, Zhihong Lin   +3 more
doaj   +1 more source