Calculating the 3D magnetic field of ITER for European TBM studies

Simppa Äkäslompolo; Otto Asunta; Thijs Bergmans; Mario Gagliardi; Jose Galabert; Eero Hirvijoki; Taina Kurki-Suonio; Seppo Sipilä; Antti Snicker; Konsta Särkimäki

doi:10.1016/j.fusengdes.2015.05.038

Calculating the 3D magnetic field of ITER for European TBM studies

Simppa Äkäslompolo (Corresponding Author), Otto Asunta, Thijs Bergmans, Mario Gagliardi, Jose Galabert, Eero Hirvijoki, Taina Kurki-Suonio, Seppo Sipilä, Antti Snicker, Konsta Särkimäki

Not published at VTT

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

11 Citations (Scopus)

Abstract

The magnetic perturbation due to the ferromagnetic test blanket modules (TBMs) may deteriorate fast ion confinement in ITER. This effect must be quantified by numerical studies in 3D. We have implemented a combined finite element method (FEM) - Biot-Savart law integrator method (BSLIM) to calculate the ITER 3D magnetic field and vector potential in detail. Unavoidable geometry simplifications changed the mass of the TBMs and ferritic inserts (FIs) up to 26%. This has been compensated for by modifying the nonlinear ferromagnetic material properties accordingly. Despite the simplifications, the computation geometry and the calculated fields are highly detailed. The combination of careful FEM mesh design and using BSLIM enables the use of the fields unsmoothed for particle orbit-following simulations. The magnetic field was found to agree with earlier calculations and revealed finer details. The vector potential is intended to serve as input for plasma shielding calculations.

Original language	English
Pages (from-to)	1039-1043
Number of pages	5
Journal	Fusion Engineering and Design
Volume	98-99
DOIs	https://doi.org/10.1016/j.fusengdes.2015.05.038
Publication status	Published - 1 Oct 2015
MoE publication type	A1 Journal article-refereed

Keywords

Ferritic insert
ITER
Magnetization
Test Blanket Module

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.fusengdes.2015.05.038

Cite this

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title = "Calculating the 3D magnetic field of ITER for European TBM studies",

abstract = "The magnetic perturbation due to the ferromagnetic test blanket modules (TBMs) may deteriorate fast ion confinement in ITER. This effect must be quantified by numerical studies in 3D. We have implemented a combined finite element method (FEM) - Biot-Savart law integrator method (BSLIM) to calculate the ITER 3D magnetic field and vector potential in detail. Unavoidable geometry simplifications changed the mass of the TBMs and ferritic inserts (FIs) up to 26%. This has been compensated for by modifying the nonlinear ferromagnetic material properties accordingly. Despite the simplifications, the computation geometry and the calculated fields are highly detailed. The combination of careful FEM mesh design and using BSLIM enables the use of the fields unsmoothed for particle orbit-following simulations. The magnetic field was found to agree with earlier calculations and revealed finer details. The vector potential is intended to serve as input for plasma shielding calculations.",

keywords = "Ferritic insert, ITER, Magnetization, Test Blanket Module",

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AU - Äkäslompolo, Simppa

AU - Asunta, Otto

AU - Bergmans, Thijs

AU - Gagliardi, Mario

AU - Galabert, Jose

AU - Hirvijoki, Eero

AU - Kurki-Suonio, Taina

AU - Sipilä, Seppo

AU - Snicker, Antti

AU - Särkimäki, Konsta

PY - 2015/10/1

Y1 - 2015/10/1

N2 - The magnetic perturbation due to the ferromagnetic test blanket modules (TBMs) may deteriorate fast ion confinement in ITER. This effect must be quantified by numerical studies in 3D. We have implemented a combined finite element method (FEM) - Biot-Savart law integrator method (BSLIM) to calculate the ITER 3D magnetic field and vector potential in detail. Unavoidable geometry simplifications changed the mass of the TBMs and ferritic inserts (FIs) up to 26%. This has been compensated for by modifying the nonlinear ferromagnetic material properties accordingly. Despite the simplifications, the computation geometry and the calculated fields are highly detailed. The combination of careful FEM mesh design and using BSLIM enables the use of the fields unsmoothed for particle orbit-following simulations. The magnetic field was found to agree with earlier calculations and revealed finer details. The vector potential is intended to serve as input for plasma shielding calculations.

AB - The magnetic perturbation due to the ferromagnetic test blanket modules (TBMs) may deteriorate fast ion confinement in ITER. This effect must be quantified by numerical studies in 3D. We have implemented a combined finite element method (FEM) - Biot-Savart law integrator method (BSLIM) to calculate the ITER 3D magnetic field and vector potential in detail. Unavoidable geometry simplifications changed the mass of the TBMs and ferritic inserts (FIs) up to 26%. This has been compensated for by modifying the nonlinear ferromagnetic material properties accordingly. Despite the simplifications, the computation geometry and the calculated fields are highly detailed. The combination of careful FEM mesh design and using BSLIM enables the use of the fields unsmoothed for particle orbit-following simulations. The magnetic field was found to agree with earlier calculations and revealed finer details. The vector potential is intended to serve as input for plasma shielding calculations.

KW - Ferritic insert

KW - ITER

KW - Magnetization

KW - Test Blanket Module

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SN - 0920-3796

VL - 98-99

SP - 1039

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JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Calculating the 3D magnetic field of ITER for European TBM studies

Abstract

Keywords

UN SDGs

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