NDLI: Cabling Technology of <formula formulatype=inline><tex Notation=TeX>$hbox{Nb}_{3}hbox{Sn}$</tex> </formula> Conductor for ITER Central Solenoid

Content Provider	IEEE Xplore Digital Library
Author	Takahashi, Y. Nabara, Y. Ozeki, H. Hemmi, T. Nunoya, Y. Isono, T. Matsui, K. Kawano, K. Oshikiri, M. Uno, Y. Tsutsumi, F. Shibutani, K. Kawasaki, T. Okuno, K. Murakami, Y. Tani, M. Sato, G. Nakata, Y. Sugimoto, M.
Copyright Year	2002
Abstract	Under the International Thermonuclear Experimental Reactor (ITER) project, the Japan Atomic Energy Agency (JAEA) is procuring all of the Nb₃Sn conductors for the Central Solenoid (CS). The CS consists of six vertically stacked modules. The height and outer diameter of the CS are approximately 13 m and 4 m, respectively. The CS has a circular five stage cable. All of approximately 43 km of Nb₃Sn CS cables will be manufactured in Japan. Before mass-production start, the jacketed cable conductors should be tested in the SULTAN facility in Switzerland to confirm their superconducting performance. The original cabling design had relatively long twist pitches and is referred to as the normal twist pitch (NTP) conductor. The NTP conductor test results revealed decreasing the current sharing temperature (Tcs) with increasing number of electro-magnetic (EM) load cycles. Therefore, a short twist pitch (STP) design was proposed and the STP conductors were also tested. The STP conductor results showed that the Tcs is stable during EM cyclic load tests. Because the conductors with STP have a smaller void fraction in the cable area than those with NTP, a higher compaction ratio during cabling is required and the possibility of damage on strands increases. The STP cable technology was developed in collaboration among Japanese cabling suppliers and JAEA. Several key technologies will be described in this paper.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1
Ending Page	4
Page Count	4
File Size	739809
File Format	PDF
ISSN	10518223
Volume Number	24
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Conductors Superconducting cables Niobium-tin Cable shielding Solenoids Degradation Temperature measurement twist pitch Cable cable-in-conduit conductor (CICC) central solenoid ITER $\hbox{Nb}_{3}\hbox{Sn}$
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Design of a $hbox{Nb}_{3}hbox{Sn}$ Cable-in-Conduit Conductor to Withstand the 60 000 Electromagnetic Cycles of the ITER Central Solenoid

Cable Twist Pitch Variation in $hbox{Nb}_{3}hbox{Sn}$ Conductors for ITER Toroidal Field Coils in Japan

Analysis of Internal-Tin $hbox{Nb}_{3}hbox{Sn}$ Conductors for ITER Central Solenoid

Manufacturing and Preliminary Performance Expectations of $hbox{Nb}_{3}hbox{Sn}$ Based Conductors Allocated for the First ITER TF Coil With CICC From Korea

Overview of Conductor Production for ITER Toroidal Field Magnet in Korea

Preliminary Performance Test Results of First CICC From Korea Destined for an ITER TF Magnet

Recent Tests of the ITER Conductors and Highlights in $ hbox{Nb}_{3}hbox{Sn}$ Conductors Behavior

Prototype $hbox{Nb}_{3}hbox{Sn}$ Superconducting Strand for ITER CS Coil Conductor Produced in Korea Using the Internal-Tin Route

Impact of Cable Twist Pitch on $T_{cs}$ -Degradation and AC Loss in $hbox{Nb}_{3}hbox{Sn}$ Conductors for ITER Central Solenoids

Cabling Technology of $hbox{Nb}_{3}hbox{Sn}$ Conductor for ITER Central Solenoid

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