Overview of the ITER Correction Coils Design

Foussat, A.; Libeyre, P.; Mitchell, N.; Gribov, Y.; Jong, C.; Bessette, D.; Gallix, R.; Bauer, P.; Sahu, A. K.

doi:10.1109/tasc.2010.2041911

Cited by 51 publications

(14 citation statements)

References 3 publications

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“…Those perturbations are similar to the ones related to the correction coils (C-coils) installed at the DIII-D tokamak [5] and those that will be installed at ITER [18].…”

Section: Introductionmentioning

confidence: 56%

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Delineating the magnetic field line escape pattern and stickiness in a poloidally diverted tokamak

2014

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We analyze a Hamiltonian model with five wire loops that delineates the magnetic surfaces of the tokamak ITER, including a similar safety factor profile and the X-point related to the presence of a poloidal divertor. Non-axisymmetric magnetic perturbations are added by external coils, similar to the correction coils installed at the tokamak DIII-D and those that will be installed at ITER. To show the influence of magnetic perturbations on the field line escape, we integrate numerically the field line differential equations and obtain the footprints and deposition patterns on the divertor plate.Moreover, we show that the homoclinic tangle describes the deposition patterns in the divertor plate, agreeing with results observed in sophisticated simulation codes. Additionally, we show that while chaotic lines escape to the divertor plates, some of them are trapped, for many toroidal turns, in complex structures around magnetic islands, embedded in the chaotic region, giving rise to the so called stickiness effect characteristic of chaotic Hamiltonian systems. Finally, we introduce a random collisional term to the field line mapping to investigate stickiness alterations due to particle collisions. Within this model, we conclude that, even reduced by collisions, stickiness still influences the field line transport.

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“…Those perturbations are similar to the ones related to the correction coils (C-coils) installed at the DIII-D tokamak [5] and those that will be installed at ITER [18].…”

Section: Introductionmentioning

confidence: 56%

“…The perturbation created by these coils is similar to the correction coils (C-coils) installed at the DIII-D tokamak [5], and those that will be installed at ITER [18]. An illustration of this design can be seen in figure 4, which shows the transversal cross section of the tokamak ITER, and ten pairs of coils arranged around the chamber.…”

Section: Figurementioning

confidence: 99%

Delineating the magnetic field line escape pattern and stickiness in a poloidally diverted tokamak

2014

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“…The chosen material is a modified 316LN SS solution annealed, hot rolled, in 20 mm thick plates. The ITER IO requires that the YS, UTS, EL and the K IC at 4 K shall be over 700 MPa, 1350 MPa, 40% and 180 MPa.m 1/2 , respectively [18,19]. The geometries of samples for Charpy impact, tensile, FT and fatigue test are same to those of samples of the PF conductor jacket.…”

Section: Mechanical Test On the Iter CC Structural Case Conductomentioning

confidence: 99%

Mechanical property tests on structural materials for ITER magnet system at low temperatures in China

Huang¹,

Huang²,

Li³

2014

AIP Conference Proceedings

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Abstract. High field superconducting magnets need strong non-superconducting components for structural reinforcement. For instance, the ITER magnet system (MS) consists of cable-in-conduit conductor, coil case, magnet support, and insulating materials. Investigation of mechanical properties at magnet operation temperature with specimens machined at the final manufacturing stages of the conductor jacket materials, magnet support material, and insulating materials, even the component of the full-size conductor jacket is necessary to establish sound databases for the products. In China, almost all mechanical property tests of structural materials for the ITER MS, including conductor jacket materials of TF coils, PF coils, CCs, case material of CCs, conductor jacket materials of Main Busbars (MB) and Corrector Busbars (CB), material of magnet supports, and insulating materials of CCs have been carried out at the Technical Institute of Physics and Chemistry (TIPC), Chinese Academy of Sciences (CAS). In this paper, the mechanical property test facilities are briefly demonstrated and the mechanical tests on the structural materials for the ITER MS, highlighting test rigs as well as test methods, are presented.

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“…For the latter, also pellet injection will have an important role to increase the ELM frequency, thus reducing the amplitude. As for the active coils, the present design foresees a set of in-vessel coils for ELMs and RWM control and a set of external correction coils to control Error Field Locked Modes instability [28,29].…”

Section: Itermentioning

confidence: 99%