China
Africa
Explore chapters and articles related to this topic
Fusion
Published in William J. Nuttall, Nuclear Renaissance, 2022
In June 2018, it was reported that: At an ion temperature of about 40 million degrees and a density of 0.8 × 1020 particles per cubic metre Wendelstein 7-X has attained a fusion product affording a good 6 × 1026 degrees × second per cubic metre, the world’s stellarator record [53].
Structural Analysis of Wendelstein 7-X Nonplanar Coil Type 1 in Self-Field Test Conditions
Published in Fusion Science and Technology, 2018
Shanwen Zhang, Yuntao Song, Zhongwei Wang, Xuebing Peng, Jianfeng Zhang, Yongfa Qin, Linlin Tang, Qiang He
The Wendelstein 7-X (W7-X), the largest modular stellarator in the world, is in operation at Max Planck Institute for Plasma Physics in Greifswald, Germany.1–4 The W7-X aims to provide a mature option for the fusion reactor.5 The stellarator has a complex five-fold symmetric magnet system that includes 50 nonplanar and 20 planar superconducting coils, which are supported by a massive central support structure.1,6,7 All superconducting coils have been subjected to gravity and electromagnetic force due to the interaction between the self-field and coil current in the test conditions in Saclay, France. Each coil is equipped with a few mechanical sensors.8 Some of the sensors have indicated considerable deviation from the numerical prediction. The nonplanar coil (NPC) Type 1 (NPC1) is an example of such deviations.
Wendelstein 7-X Near Real-Time Image Diagnostic System for Plasma-Facing Components Protection
Published in Fusion Science and Technology, 2018
A. Puig Sitjes, M. Jakubowski, A. Ali, P. Drewelow, V. Moncada, F. Pisano, T. T. Ngo, B. Cannas, J. M. Travere, G. Kocsis, T. Szepesi, T. Szabolics
Wendelstein 7-X (W7-X) is a drift optimized nuclear fusion device of stellarator type built in Greifswald by the Max-Planck-Institut für Plasmaphysik1 (IPP). Its main goal is to prove that the stellarator design is suitable for a future fusion power plant with steady-state operation. With plasmas of up to 30 min and with a steady-state heating power of 10 MW, a continuous real-time data acquisition, analysis, and control system is necessary in order to protect the plasma-facing components (PFCs) from overheating.