Application of inter-linked superconducting coils for central solenoid and advanced divertor configuration of DEMO

Hiroyasu Utoh; Nobuyuki Asakura; Kenji Tobita; Yoshiteru Sakamoto; Youji Someya; Kazuo Hoshino; Makoto Nakamura

doi:10.1016/j.fusengdes.2014.03.011

Application of inter-linked superconducting coils for central solenoid and advanced divertor configuration of DEMO

Hiroyasu Utoh, Nobuyuki Asakura, Kenji Tobita, Yoshiteru Sakamoto, Youji Someya, Kazuo Hoshino, Makoto Nakamura

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

To determine the engineering feasibility of an "inter-linked" (IL) superconducting central solenoid (CS) and poloidal field (PF) coil, we studied the basic engineering design of the IL-CS and PF coil. We were able to use IL superconducting coils in a tokamak fusion demonstration power plant (DEMO) reactor to achieve a sufficient amount of the CS magnetic flux swing for the current ramp-up while maintaining plasma size and also achieving an advanced divertor concepts of "super-X divertor (SXD)" by locating near the plasma. A basic idea of the IL superconducting CS and PF coil concept is to wind a CS (PF coil) such that it is linked in a set of toroidal field (TF) coils. In this study, we considered the conductor and feeder design of the IL-CS and PF coil including the superconducting strand type, cooling, and winding and assembly methods, and determined that react and wind Nb₃Al is a candidate for use in an IL coil and feeder in this specification. This paper presents the preliminary engineering design results of the IL superconducting CS and PF coil for creating a SXD equilibrium configuration.

Original language	English
Pages (from-to)	2456-2460
Number of pages	5
Journal	Fusion Engineering and Design
Volume	89
Issue number	9-10
DOIs	https://doi.org/10.1016/j.fusengdes.2014.03.011
Publication status	Published - 2014 Oct
Externally published	Yes

Keywords

Central solenoid
Fusion reactor design
Inter-linked
Magnetic flux swing
Super-X divertor
Superconducting magnet

ASJC Scopus subject areas

Civil and Structural Engineering
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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10.1016/j.fusengdes.2014.03.011

Cite this

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abstract = "To determine the engineering feasibility of an {"}inter-linked{"} (IL) superconducting central solenoid (CS) and poloidal field (PF) coil, we studied the basic engineering design of the IL-CS and PF coil. We were able to use IL superconducting coils in a tokamak fusion demonstration power plant (DEMO) reactor to achieve a sufficient amount of the CS magnetic flux swing for the current ramp-up while maintaining plasma size and also achieving an advanced divertor concepts of {"}super-X divertor (SXD){"} by locating near the plasma. A basic idea of the IL superconducting CS and PF coil concept is to wind a CS (PF coil) such that it is linked in a set of toroidal field (TF) coils. In this study, we considered the conductor and feeder design of the IL-CS and PF coil including the superconducting strand type, cooling, and winding and assembly methods, and determined that react and wind Nb3Al is a candidate for use in an IL coil and feeder in this specification. This paper presents the preliminary engineering design results of the IL superconducting CS and PF coil for creating a SXD equilibrium configuration.",

keywords = "Central solenoid, Fusion reactor design, Inter-linked, Magnetic flux swing, Super-X divertor, Superconducting magnet",

author = "Hiroyasu Utoh and Nobuyuki Asakura and Kenji Tobita and Yoshiteru Sakamoto and Youji Someya and Kazuo Hoshino and Makoto Nakamura",

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AU - Utoh, Hiroyasu

AU - Asakura, Nobuyuki

AU - Tobita, Kenji

AU - Sakamoto, Yoshiteru

AU - Someya, Youji

AU - Hoshino, Kazuo

AU - Nakamura, Makoto

PY - 2014/10

Y1 - 2014/10

N2 - To determine the engineering feasibility of an "inter-linked" (IL) superconducting central solenoid (CS) and poloidal field (PF) coil, we studied the basic engineering design of the IL-CS and PF coil. We were able to use IL superconducting coils in a tokamak fusion demonstration power plant (DEMO) reactor to achieve a sufficient amount of the CS magnetic flux swing for the current ramp-up while maintaining plasma size and also achieving an advanced divertor concepts of "super-X divertor (SXD)" by locating near the plasma. A basic idea of the IL superconducting CS and PF coil concept is to wind a CS (PF coil) such that it is linked in a set of toroidal field (TF) coils. In this study, we considered the conductor and feeder design of the IL-CS and PF coil including the superconducting strand type, cooling, and winding and assembly methods, and determined that react and wind Nb3Al is a candidate for use in an IL coil and feeder in this specification. This paper presents the preliminary engineering design results of the IL superconducting CS and PF coil for creating a SXD equilibrium configuration.

AB - To determine the engineering feasibility of an "inter-linked" (IL) superconducting central solenoid (CS) and poloidal field (PF) coil, we studied the basic engineering design of the IL-CS and PF coil. We were able to use IL superconducting coils in a tokamak fusion demonstration power plant (DEMO) reactor to achieve a sufficient amount of the CS magnetic flux swing for the current ramp-up while maintaining plasma size and also achieving an advanced divertor concepts of "super-X divertor (SXD)" by locating near the plasma. A basic idea of the IL superconducting CS and PF coil concept is to wind a CS (PF coil) such that it is linked in a set of toroidal field (TF) coils. In this study, we considered the conductor and feeder design of the IL-CS and PF coil including the superconducting strand type, cooling, and winding and assembly methods, and determined that react and wind Nb3Al is a candidate for use in an IL coil and feeder in this specification. This paper presents the preliminary engineering design results of the IL superconducting CS and PF coil for creating a SXD equilibrium configuration.

KW - Central solenoid

KW - Fusion reactor design

KW - Inter-linked

KW - Magnetic flux swing

KW - Super-X divertor

KW - Superconducting magnet

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Application of inter-linked superconducting coils for central solenoid and advanced divertor configuration of DEMO

Abstract

Keywords

ASJC Scopus subject areas

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