NDLI: Wendelstein 7-X–Commissioning of the Superconducting Magnet System

Content Provider	IEEE Xplore Digital Library
Author	Risse, K. Birus, D. Bosch, S. Bykov, V. Carls, A. Dhard, C.P. Fellinger, J. Monnich, T. Nagel, M. Otte, M. Rummel, T. Schneider, M.
Copyright Year	2002
Description	The Wendelstein 7-X stellarator (W7-X), one of the largest stellarator fusion experiments, is presently being taken into operation at the Max Planck Institute for Plasma Physics in Greifswald. The main objective of the experiment is to prove the reactor relevance of the optimized stellarator concept. The W7-X experiment has a superconducting magnet system with 50 nonplanar and 20 planar coils grouped in five equal modules, which are electrically connected in 7 circuits with 10 coils of each type. The connections between the coils are made by superconducting the bus bars using the same NbTi Cable-in-Conduit Conductor as used for the superconducting coils. Particularly developed high-temperature superconducting current leads feed the current into the cryostat by bridging the temperature gradient from room temperature down to the 4-K level. Seven power supplies provide individual currents in the seven circuits. The quench detection system permanently checks the superconducting system regarding the occurrence of a quench. In case of a quench, the magnet safety system has to be activated, and a set of switches lead the current into the dump resistors. The commissioning of the magnet system was successfully performed until July 2015 with tests of the complete magnet system functionality needed for plasma operation at a magnetic field of 2.5 T.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1
Ending Page	4
Page Count	4
File Size	838365
File Format	PDF
ISSN	10518223
Volume Number	26
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Superconducting magnets Magnetic circuits Superconducting coils Discharges (electric) Safety High-temperature superconductors Wendelstein 7-X Commissioning Stellarator Superconducting Magnets
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Development of a Displacement Measurement System for Wendelstein 7-X Superconducting Magnet System

Comparative analysis of design options for current leads for Wendelstein 7-X magnet system

The Superconducting Magnet System of the Stellarator Wendelstein 7-X

High Temperature Superconductor Current Leads for WENDELSTEIN 7-X and JT-60SA

The Trim Coils for the Wendelstein 7-X Magnet System

Current Leads for the Wendelstein 7-X Superconducting Magnet System

Experiences From the Assembly of the Magnet System for Wendelstein 7-X

Thermohydraulic behavior of the WENDELSTEIN 7-X magnet system

Design and Prototype of the High Voltage In-Service-Tests on the Superconducting Magnet System of Wendelstein 7-X

Wendelstein 7-X–Commissioning of the Superconducting Magnet System

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High Temperature Superconductor Current Leads for WENDELSTEIN 7-X and JT-60SA

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Current Leads for the Wendelstein 7-X Superconducting Magnet System

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