Superconducting magnet system in a fusion reactor

Okuno, K.; Shikov, A.K.; Koizumi, N.

doi:10.1016/j.jnucmat.2004.04.151

Cited by 16 publications

(6 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nb 3 Sn superconductor technologies have advanced significantly as a result of significant development at ITER, including the production of model coils [27]. Deuterons are kept from escaping the source cell by Nb 3 Sn magnets, ensuring that the nuclear process uses all of the deuterium fuel used in the fusion reaction.…”

Section: Methodsmentioning

confidence: 99%

Influence of uranium dioxide and reflector surface on neutron yields of the nuclear hybrid fusion-fission reaction using MCUNED code

Reda¹,

Khalil²,

Anwar³

et al. 2022

Phys. Scr.

View full text Add to dashboard Cite

The goal of the present work is to demonstrate the effects of adding uranium dioxide (UO2) to deuterium fuel in the fusion-fission hybrid reactions. The effectiveness of applying a reflector surface on the neutron yield in D-D and D-UO2 reactions has been investigated. The neutrons yielded from the fusion reactions were considered as a neutron source for fission reactions. For this purpose, MCNPX and its extension, the MCUNED code, for D-D fusion processes and UO2 fission reactions were used to calculate the neutron yield and the generated power. Using externally evaluated nuclear data libraries, MCUNED is capable of light ion transport. The D (d, n) 3He reaction with 0.25 gm of deuterium and the fission reactions with 0.25 and 1.0 gm of UO2 were utilized. The results showed that the calculated neutron flux from the D-D fusion reaction increased by a considerable amount when applying the reflector surface. Adding 1.0 gm of UO2 to deuterium fuel enhanced neutron flux by 4.95 times on average, outside the source with the reflector surface. The calculated power increased by about 3-folds when 1.0 gm of UO2 was added. Despite the narrow cross section of the D-D reactions used in this study, it was found that utilizing the reflector surface and UO2 or depleted uranium with restrictive high masses may be able to multiply the generated neutrons and the resulting power.

show abstract

Section: Methodsmentioning

confidence: 99%

Influence of uranium dioxide and reflector surface on neutron yields of the nuclear hybrid fusion-fission reaction using MCUNED code

Reda¹,

Khalil²,

Anwar³

et al. 2022

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…With the development in the properties of high temperature superconducting (HTS) conductors, the HTS magnet could be considered as potential Tokamak magnet components with the advantages of higher operation temperature and critical current density [1][2][3]. At present, the application of HTS in fusion devices mainly focuses on the design and fabrication of high temperature superconducting high current conductor [4][5][6][7][8], the design and fabrication of high temperature superconducting current lead [9,10], and the concept design and small model fabrication of HTS magnet [11,12].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of a No-Insulation BSCCO Toroidal Magnet Applied in Magnetic Confinement Fusion

Zhang

Tang

et al. 2018

Science and Technology of Nuclear Installations

View full text Add to dashboard Cite

At present, the Tokamak has become a mainstream form of the magnetic confinement fusion device. The toroidal field (TF) magnet in the Tokamak system is required to generate a high-steady field to confine and shape the high temperature plasma. To secure high current density and high thermal stability, the no-insulation (NI) winding technique is used in the fabrication of the TF magnet. During plasma operation, heat is generated in the TF magnet caused by the interaction with central solenoid (CS) coils, poloidal field (PF) coils, and the plasma current. The heat generated in NI coils is complex owing to the existence of current flow between adjacent turns. Thus, it is necessary to calculate the thermal problems. Taking into consideration the effect of turn-to-turn contact resistance, this paper presents the thermal behavior of a NI toroidal magnet under different operating conditions. The NI toroidal magnet is composed of 10 double-pancake (DP) coils wound with BSCCO tapes. The analysis procedure combines the finite element method (FEM) with an equivalent circuit model. This analysis has applicability and practical directive to the design of cryogenic cooling system for NI toroidal magnet.

show abstract

“…Nb 3 Al, due to its excellent superconducting properties, has drawn comprehensive attention since 1980s [1,2]. A15 structure materials are famous for their superconductivities and Nb 3 Al has the higher critical temperature among all the A15 structure materials [3,4]. Furthermore, high value of critical current density (J c ) under high applied field makes it a promising substitution material for the fabrication of high-field magnet.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Nb3Al superconductor by powder metallurgy and effect of mechanical alloying on the phase formation

Liu

Chen

et al. 2014

J. Mod. Transport.

View full text Add to dashboard Cite

Adoption of powder-in-tube method to fabricate superconducting wire can realize a large application of Nb 3 Al prepared by powder metallurgy. Powder metallurgy was used to synthesize Nb 3 Al under various heat-treatment conditions, annealing temperature was varied from 700 to 1,000°C and heating time was varied from 10 to 50 h. X-ray diffraction patterns reveal that a reaction between Nb and Al took place and formed NbAl 3 phase. Under current heat-treatment conditions (annealing temperature was varied from 700 to 1,000°C and heating time was varied from 10 to 50 h), NbAl 3 was so stable that it did not further react with the unreacted Nb and was not sensitive to the heat-treatment condition. By mechanical alloying, adoption of high-energy ball milling significantly decreases particle size and enhances surface free energy, which promotes the formation of Nb 3 Al phase. X-ray diffraction patterns indicate that relatively pure Nb 3 Al phase was obtained under the same heat-treatment condition. Energy-dispersive X-ray analysis measurement demonstrates that the obtained samples were close to the right stoichiometry of A15 structure Nb 3 Al.

show abstract

Superconducting magnet system in a fusion reactor

Cited by 16 publications

References 19 publications

Influence of uranium dioxide and reflector surface on neutron yields of the nuclear hybrid fusion-fission reaction using MCUNED code

Influence of uranium dioxide and reflector surface on neutron yields of the nuclear hybrid fusion-fission reaction using MCUNED code

Numerical Simulation of a No-Insulation BSCCO Toroidal Magnet Applied in Magnetic Confinement Fusion

Preparation of Nb3Al superconductor by powder metallurgy and effect of mechanical alloying on the phase formation

Contact Info

Product

Resources

About