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Foussat A.,ITER Organization | Wu W.,CAS Hefei Institutes of Physical Science | Li H.,China International Nuclear Fusion Energy Program Execution | Dolgetta N.,ITER Organization | And 2 more authors.
IEEE Transactions on Applied Superconductivity | Year: 2012

The ITER Magnet system consists of four main coils sub-systems: 18 Toroidal Field Coils (TF-coil), a Central Solenoid (CS), 6 Poloidal Field Coils (PF-coil) and 18 Correction Coils (EFCC). The main contract of the EFCCs supply is awarded to the Institute of Plasma Physics Chinese Academy of Sciences (ASIPP) by the Chinese Domestic Agency (CNDA). According to the pre-qualification program, ASIPP is implementing the procurement phase to qualify and validate key technologies and manufacturing methods. The Correction coils qualification activities are conducted within the framework of the procurement arrangement set up between the ITER Organization and CNDA. The paper describes the CC development including first results of the coils winding qualification trials and, qualification of a S-Glass fiber-polyimide based insulation system The CC casing assembly process and the first results of the welding trials are reported. The weld qualification, according to ASTM for 316LN austenitic steel is reported in terms of fracture toughness, fatigue crack growth, and tensile property at 4 K. The Vacuum Pressure Impregnation of CC short mock-up, with low viscosity bisphenol-F (DGEBF) epoxy resin, aims to optimization of the curing and insulation mechanical properties. © 2011 IEEE. Source

Li H.,China International Nuclear Fusion Energy Program Execution | Yan G.,Shanghai JiaoTong University | Gao P.,Shanghai JiaoTong University
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science | Year: 2010

The method of wireless power transmission is an important method in powering wireless medical devices in vivo, but the efficiency is still low, especially when the devices move freely in random positions and orientations. Aiming at powering an endoscopic capsule, a method for improving efficiency of wireless power transmission is proposed, which is based on electromagnetic localization and synthesis of magnetic field vector. By analysing the model and experimenting in vitro, the proposed method is verified, which can improve the efficiency of the wireless power transmission because of accurate localization of the capsule and synthesis of magnetic field vector. © 2010 Authors. Source

Qin J.,CAS Hefei Institutes of Physical Science | Weiss K.-P.,Karlsruhe Institute of Technology | Wu Y.,CAS Hefei Institutes of Physical Science | Wu Z.,CAS Technical Institute of Physics and Chemistry | And 2 more authors.
Cryogenics | Year: 2012

This paper focuses on fatigue tests on the ITER Poloidal Field (PF) jacket made of 316L stainless steel material. During manufacture, the conductor will be compacted and spooled after cable insertion. Therefore, sample jackets were prepared under compaction, bending and straightening in order to simulate the status of PF conductor during manufacturing and winding. The fatigue properties of materials were measured at T < 7 K, including S-N and fatigue crack growth rate (FCGR). The testing results show that the present Chinese PF jacket has good fatigue properties, which conclude that the results are accordant with the requirements of ITER. © 2012 Elsevier Ltd. All rights reserved. Source

Li X.,CAS Hefei Institutes of Physical Science | Li X.,China International Nuclear Fusion Energy Program Execution | Shi Y.,CAS Hefei Institutes of Physical Science
Plasma Science and Technology | Year: 2015

With the technical requirement of the International Thermonuclear Experimental Reactor (ITER) project, the manufacture and assembly technology of the mid Edge Localized Modes (ELM) coil was developed by the Institute of Plasma Physics, Chinese Academy of Science (ASIPP). As the gap between the bracket and the Stainless Steel jacketed and Mineral Insulated Conductor (SSMIC) can be larger than 0.5 mm instead of 0.01 mm to 0.1 mm as in normal industrial cases, the process of mid ELM coil bracket brazing to the SSMICT becomes quiet challenging, from a technical viewpoint. This paper described the preliminary design of ELM coil bracket brazing to the SSMIC process, the optimal bracket brazing curve and the thermal simulation of the bracket furnace brazing method developed by ANSYS. BAg-6 foil (Bag50Cu34Zn16) plus BAg-1a paste (Bag45CuZnCd) solders were chosen as the brazing filler. By testing an SSMICT prototype, it is shown that the average gap between the bracket and the SSMIC could be controlled to 0.2-0.3 mm, and that there were few voids in the brazing surface. The results also verified that the preliminary design had a favorable heat conducting performance in the bracket. © 2015, IOP. All rights reserved. Source

Han X.,Huazhong University of Science and Technology | Cao Q.,Huazhong University of Science and Technology | Wang M.,China International Nuclear Fusion Energy Program Execution
Conference Record - IEEE Instrumentation and Measurement Technology Conference | Year: 2011

In this work, a linear position sensor based on a Hall Effect element with electromagnetic coils for measuring long displacement is presented. This paper proposes a novel stationary system using one pair of Helmholtz coils and one pair of Maxwell coils. The Maxwell coil pair is chose to generate uniform gradient magnetic flux intensity. The Helmholtz coil pair is used to increase the magnetic field without sacrificing linearity for reducing the measurement error near the center. Then, a computation of the quasi-static electromagnetic field of the sensor using the finite element method has been performed. Secondary model has been created on the basis of finite element results. Then this model has been optimized with respect to two criteria: linearity and sensitivity. The designed electromagnetic coils pair combining with a Hall sensor has the advantage of displacement measurement with wider range, lower cost and simple structure. © 2011 IEEE. Source

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