The magnetic diagnostic set for ITER

Testa, A.; Chavan,; Guterl,; Lister,; Moret,; Perez, Josep M.; Sánchez,; Schaller,; Tonetti,; Toussaint,; Chitarin, G.; Delogu, R.; Gallo, Valentina; Marconato, N.; Peruzzo, Alberto; Encheva,; Vayakis,; Walker, Trent; Carfantan,; Fournier,; Maeder, Thomas; Hodgson,; Romero,; Vila, R.; Le-Luyer,; Moreau,; Brichard,; Vermeeren,

doi:10.1109/fusion.2009.5226525

Cited by 5 publications

(7 citation statements)

References 11 publications

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“…Relative permittivity Dielectric strength [kV/mm] G10 4.5 [1] 16 [3] GFRP 5.5 [2] 15.4 [3] Epoxy resin 3 [2] 19.7 [3] Alumina 9.6 [1] 13-14 [3] Vacuum 1 [1] -Talcum 4.7 [3] 25 [3] Polyimide 3.4 [4] 154 [4] [ If there are voids on the interface between metal structural parts and insulating structural parts, the analysis results indicate the peak electrical eld strength is 20.4 kV/mm, which can lead to partial discharge and breakdown. Therefore, it is necessary to reduce the void content in glass ber reinforced epoxy resin composite by using manufacturing process under vacuum, and the void content can be controlled under 1% [11].…”

Section: Methodsmentioning

confidence: 99%

“…Different from the existing commercial products, the 19 kV class SD to connect HV instrumentation wires and cable will be used under high vacuum, cryogenic temperature, strong magnetic eld and radiation environ-ment, in addition, the SDs will be assembled on-site, so the material selection and structural design is a huge challenge [1][2][3]. To manufacture easily and assemble conveniently, the modular structure is used to develop the 19 kV class SD.…”

Section: Introductionmentioning

confidence: 99%

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R&D of 19 kV class splicing device to connect high-voltage instrumentation wires and cable

Wei

Zhu

Laurenti

et al. 2022

Preprint

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As transition connection in ITER machine, a large number of splicing devices (SDs) will be developed to connect the high voltage (HV) signal wires from different types of sensors installed in the superconducting magnet system to the HV cables connected with the feedthroughs installed in the cryostat wall. The structural design of 19 kV class SD aims at avoiding the electromagnetic interference and obtaining enough dielectric strength under high vacuum and cryogenic temperature environment. To avoid Paschen discharge under low vacuum, much attention is paid on the helium tightness of 19 kV class SD. To investigate the influence of the void in epoxy resin on the insulating performance of SD, the electric field analysis based on finite element technology is performed, the results indicate the peak electric field is much higher than the finite element model without void, which indicates that the void can lead to charge accumulation near metal electrode and electrical breakdown of insulating materials. Further tests indicate the insulating rod manufactured by using glass fiber wet winding under vacuum environment can reduce void in epoxy resin less than 2%, and the cryogenic electrical insulating performance of 19 kV class SD satisfy the technical specifications.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

R&D of 19 kV class splicing device to connect high-voltage instrumentation wires and cable

Wei

Zhu

Laurenti

et al. 2022

Preprint

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“…In order to obtain the flux, this voltage has to be integrated over time ( ∝ V sensor · dt). The flux and its derivative are then used by different algorithms to compute a large variety of plasma parameters, such as the plasma current, shape and position and the properties of different magnetohydrodynamics instabilities [5].…”

Section: Contextmentioning

confidence: 99%

Conceptual architecture of the plant system controller for the magnetics diagnostic of the ITER tokamak

Neto

Arshad

Sartori

et al. 2015

Fusion Engineering and Design

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“…and diverter[10,24,28,36,125,[144][145][146][147][148][149][150] of ITER reactor[10,16,17,24,25,85,129,136,145,147,[151][152][153][154][155][156][157][158][159][160][161][162][163][164][165] and experimental DEMO[3, 4,9,13,19,31,32,36,122,123,133,163,[166][167][168][169][170]…”

mentioning

confidence: 99%

Plasma Facing Material by Self-Interstitial Solid Solution Strengthening – Problem, Proposition, and a Solution

Rafique¹

2020

Preprint

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Bubble (point defect) – a precursor of fuzz or under dense nanostructure formation is crystal lattice defect. Suitable selection of crystal lattice which inhibit Frenkel pair generation and intrinsically promotes selfinterstitial solid solution strengthening contributes effectively towards making plasma facing material. For this, interstitial sites, their size, amount / fraction, positions, tendency of occupation and diffusion parameters (e.g. activation energies (Q), activation volumes) are determined. Fcc iron carbon alloys (austenitic stainless steels AISI / SAE 321, fcc structure, Pearson code cF4, space group Fm3̅m) are proposed as suitable candidates. Along with their room temperature fcc structure having 12 interstitial positions (4 octahedral, 6 coordination sites and 8 tetrahedral, 4 coordination sites / unit cell) to allow insertion of self (iron) atoms, they have excellent corrosion resistance, thermal conductivity, and nonmagnetic properties. After their melting, casting, and machining to required dimensions and geometry, stabilizing heat treatment is applied to precipitate all carbon as TiC and prevent formation of Cr23C6 (sensitization). This resist heat and surface degradation and yield excellent architecture which not only inhibit Frankel pair generation but will also allow bulk assimilation or surface annihilation (loop punching) of this lattice point defect. A superior thermal, fluid, and structural design augment above

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The magnetic diagnostic set for ITER

Abstract: Abstract-This paper presents the multiple set of requirements for the ITER magnetic diagnostic systems and the current status of the various R&D activities performed by the EU partners.Index Terms-ITER, magnetic diagnostic system.

Cited by 5 publications

References 11 publications

R&D of 19 kV class splicing device to connect high-voltage instrumentation wires and cable

R&D of 19 kV class splicing device to connect high-voltage instrumentation wires and cable

Conceptual architecture of the plant system controller for the magnetics diagnostic of the ITER tokamak

Plasma Facing Material by Self-Interstitial Solid Solution Strengthening – Problem, Proposition, and a Solution

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The magnetic diagnostic set for ITER

Abstract: Abstract-This paper presents the multiple set of requirements for the ITER magnetic diagnostic systems and the current status of the various R&D activities performed by the EU partners.Index Terms-ITER, magnetic diagnostic system.

Cited by 5 publications

References 11 publications

R&amp;D of 19 kV class splicing device to connect high-voltage instrumentation wires and cable

R&amp;D of 19 kV class splicing device to connect high-voltage instrumentation wires and cable

Conceptual architecture of the plant system controller for the magnetics diagnostic of the ITER tokamak

Plasma Facing Material by Self-Interstitial Solid Solution Strengthening – Problem, Proposition, and a Solution

Contact Info

Product

Resources

About

R&D of 19 kV class splicing device to connect high-voltage instrumentation wires and cable

R&D of 19 kV class splicing device to connect high-voltage instrumentation wires and cable