Radiation-induced thermoelectric sensitivity in the mineral-insulated cable of magnetic diagnostic coils for ITER

Nishitani, T.; Vayakis, G.; Yamauchi, M.; Sugie, Toshiharu; Kondoh, T.; Shikama, Tatsuo; Ishitsuka, Etsuo; Kawashima, H.

doi:10.1016/j.jnucmat.2004.04.252

Cited by 20 publications

(19 citation statements)

References 7 publications

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“…In agreement with experiments at JMTR [7] and at CIEMAT [4], we found that in Ø1 mm MI cables with copper and stainless steel (SS) cores, a combination of radiation and thermal gradients can generate significant core-to-core voltages [6]. After determination of the pure thermoelectric sensitivity using a scanning oven [6], the combined effect of neutron/gamma radiation and thermal gradients was studied by irradiation in the BR2 reactor.…”

Section: Introductionsupporting

confidence: 74%

Neutron irradiation and temperature effects on induced voltages in various mineral insulated cables and ceramic-coated wires

Vermeeren

2011

Fusion Engineering and Design

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Section: Introductionsupporting

confidence: 74%

Neutron irradiation and temperature effects on induced voltages in various mineral insulated cables and ceramic-coated wires

Vermeeren

2011

Fusion Engineering and Design

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“…RIEMF is one source of such voltages, but early results [4] showed improbably high RIEMF. In-situ reactor tests of Mineral Insulated Cable (MIC) coils in JMTR [5] revealed the importance of coupled effects due to radiation and thermal gradients (TIEMF/ RITES).…”

Section: In-vessel Magnetic Sensorsmentioning

confidence: 99%

Nuclear technology aspects of ITER vessel-mounted diagnostics

Vayakis

Bertalot

Encheva

et al. 2011

Journal of Nuclear Materials

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ITER has diagnostics with machine protection, basic and advanced control, and physics roles. Several are distributed on the inner and outer periphery of the vacuum vessel. They have reduced maintainability compared to diagnostics in ports. They also endure some of the highest nuclear and EM loads of any diagnostic for the longest time. They include:Inductive sensors for time-integrated and raw inductive measurements; Steady-state magnetic sensors to correct drifts of the inductive sensors;Bolometer cameras to provide electromagnetic radiation tomography; Microfission chambers and neutron activation stations to provide fusion power and fluence; MM-wave reflectometry to measure the plasma density profile and the plasma-wall distance and;Wiring to service magnetics, bolometry, and in-vessel instrumentation. This paper summarises the key technological issues these diagnostics arising from the nuclear environment, recent progress and outstanding R&D for each system.

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“…An example of MI cable use for a critical device of particular concern is the equilibrium pick-up diagnostic coils [1]. The coil output signal is fed to an integrator, so any electromagnetic force (EMF) induced by radiation (RIEMF) and/or thermal effects (TIEMF) along the central conductor is added to the real signal, and moreover can rapidly saturate the integrator if too high.…”

Section: Introductionmentioning

confidence: 99%