NDLI: The current leads of the Wendelstein 7-X superconducting magnet system

Content Provider	IEEE Xplore Digital Library
Author	Rummel, T. Schauer, F. Moennich, T. Buscher, K.-P. Fietz, W.H. Heller, R.
Copyright Year	2013
Description	Author affiliation: Karlsruhe Inst. of Technol., Karlsruhe, Germany (Fietz, W.H.; Heller, R.) \|\| Euratom Assoc., Max-Planck-Inst. for Plasma Phys., Greifswald, Germany (Rummel, T.; Schauer, F.; Moennich, T.; Buscher, K.-P.)
Abstract	The stellarator fusion experiment Wendelstein 7-X (W7-X) is presently under assembly at the Greifswald branch of the Max Planck Institute for Plasma Physics (IPP), Germany. The W7-X superconducting magnet system basically consists of 50 non planar and 20 planar coils including the interconnecting bus bars, and the support structure. The seven electrical circuits with ten coils each in series, are supplied by 14 current leads (CL) operating between the cryogenic and ambient temperature environments. A special feature of these feed troughs is their upside-down orientation to save space in the vicinity of the machine. Basic electrical CL requirements are maximal steady state currents of 18.2 kA and voltage strengths of 13 kV to ground. A W7-X current lead consists of a copper conductor which also acts as a heat exchanger at the warm end side, in its continuation of a high temperature superconductor part, and at the cold end side of a copper bar with integrated $Nb_{3}Sn$ rods. All components are fully contained within a CL vacuum chamber which is separated from the main W7-X cryostat vacuum. The high voltage electrical insulation is built up of a glass tape epoxy resin system. Mechanical support of the current leads is achieved by a warm and cold glass fiber reinforced plastic flange. There are three He cooling circuits: one for the bus bar and contact cooling, one for the cold end of the CL (both at about 5 K), and one for the CL's heat exchanger (entrance temperature about 50 K). After intensive tests of two prototypes the series production has been established and completed. The current leads were tested at room temperature, and with electrical currents up to the maximum current at cryogenic temperatures.
Starting Page	1
Ending Page	6
File Size	677419
Page Count	6
File Format	PDF
e-ISBN	9781479901715
DOI	10.1109/SOFE.2013.6635344
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Helium High-temperature superconductors Cooling Heating Superconducting magnets Insulation Flanges high temperature superconductor current lead Wendelstein 7-X
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Current Leads for the Wendelstein 7-X Superconducting Magnet System

Test Results of the High Temperature Superconductor Prototype Current Leads for Wendelstein 7-X

Test Arrangement for the W7-X HTS-Current Lead Prototype Testing

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

The superconducting magnet system of the stellarator Wendelstein 7-X

The Superconducting Magnet System of the Stellarator Wendelstein 7-X

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

Current Leads for the Wendelstein 7-X Superconducting Magnet System

Experimental results of a 70 kA high temperature superconductor current lead demonstrator for the ITER magnet system

The current leads of the Wendelstein 7-X superconducting magnet system

Similar Documents

Current Leads for the Wendelstein 7-X Superconducting Magnet System

Test Results of the High Temperature Superconductor Prototype Current Leads for Wendelstein 7-X

Test Arrangement for the W7-X HTS-Current Lead Prototype Testing

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

The superconducting magnet system of the stellarator Wendelstein 7-X

The Superconducting Magnet System of the Stellarator Wendelstein 7-X

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

Current Leads for the Wendelstein 7-X Superconducting Magnet System

Experimental results of a 70 kA high temperature superconductor current lead demonstrator for the ITER magnet system

The current leads of the Wendelstein 7-X superconducting magnet system