NDLI: Development of a Test Conduction-Cooled MgB<sub>2</sub> Coil

Content Provider	IEEE Xplore Digital Library
Author	Hori, C. Nakagawa, R. Imamura, Y. Tanaka, H.
Copyright Year	2002
Description	We are now developing conduction-cooled MgB₂ coils toward the realization of magnets with 1-MJ magnetic energy. We devised a new fabrication method, which is based on the wind and react method. A bobbin in the react process is made of stainless steel. To improve cooling performance, one of the stainless steel flanges of the bobbin is replaced with an oxygen-free copper (OFC) one after the react process. To prevent winding collapse, these flanges consists of several pieces, and these pieces are replaced in sequence. The OFC flange and the coil winding are bonded with epoxy impregnation. To validate this new method, we fabricated a test coil with an inner diameter of 100 mm and a self-inductance of 8.3 mH by using a multistrand MgB₂ wire. We cooled the test coil by a two-stage GM cryocooler and measured its critical current $(I_{c})$ at 25 K. The difference between the temperature of the OFC flange and that of the winding surface was within 2 K. The $I_{c}$ was about 263 A, which had been expected to be 275.8 A in accordance with its load line and short-sample measurements. These results support the validity of our fabrication method.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1
Ending Page	4
Page Count	4
File Size	858417
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	Flanges Wires Windings Integrated circuits Cooling Fabrication Superconducting magnets wind & react (W&R) Superconducting magnet conduction cooling MgB2 react & wind (R&W)
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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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
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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